Exam 2 Flashcards

1
Q

What is the mechanism of nausea and vomiting in oncology patients?

A

Cytotoxic chemotherapy damages the epithelial cells in the lining of the GI tract. Enterochromaffin cells that line the GI tract contain large stores of serotonin, which is then released in massive quantities after chemo. (serotonin, dopamine, acetylcholine, and substance P are all neurotransmitters that are targets)

The chemoreceptor trigger zone (CTZ) stimulates the vomiting center (medulla stimulates the emetic response).

  • Nausea: feeling like you have to vomit
  • Wretching: labored movement of abdominal/thoracic muscles before vomiting
  • Vomiting: ejection or forced expulsion of gastric contents through the mouth
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2
Q

What are the 5 types of N/V associated with cancer patients?

A

Anticipatory - learned response due to N/V from prior cycles of chemo

Acute - emetic response w/in 24h of chemotherapy

Delayed - emetic following >24h after completion of chemo, mechanism not fully understood, but may involve substance P binding to neurokinin 1 receptor

Breakthrough - N/V occurring even when patient takes antiemetics

Refractory - N/V that persists despite appropriate antiemetics

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3
Q

Who is at risk for CINV?

A
  • Women > Men
  • Younger > Older
  • Prior history of motion sickness
  • Previous history of morning sickness
  • Previous CINV
  • Anxiety/high pretreatment anticipation of nausea
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4
Q

What is Regimen A for Highly Emetogenic chemotherapies?

A

4 drug regimen given right before chemo:
1. NK-1 antagonist: aprepitant, fosprepitant, polapitant, netupitant, posnetupitant
2. Steroid: dexamethasone
3. 5-HT3 antagonist: dolasetron, granisetron, ondansetron, palonosetron
4. Atypical antipsychotic: olanzapine

*NK-1 antagonist & steroid are both really good for acute AND delayed, 5-HT3 antagonist is better for acute (not as much delayed)
*can add lorazepam or H2RA/PPI if needed (to any regimen or emetogenicity)

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5
Q

What is Regimen B for Highly Emetogenic chemotherapies?

A

3 drug regimen given right before chemo:
1. Atypical antipsychotic: Olanzapine
2. 5-HT3 antagonist: Palonosetron
3. Steroid: Dexamethasone

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6
Q

What is Regimen C for Highly Emetogenic chemotherapies?

A

3 drug regimen given right before chemo:
1. NK-1 antagonist: Aprepitant, fosprepitant, polapitant, netupitant, posnetupitant
2. 5-HT3 antagonist: Dolasetron, granisetron, ondansetron, palonosetron
3. Steroid: Dexamethasone

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7
Q

What is Regimen A for Moderately Emetogenic chemotherapies?

A

2 drug regimen:
1. Steroid: Dexamethasone
2. 5HT3 antagonist: Dolasetron, granisetron, ondansetron, palonosetron

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8
Q

What is Regimen B for Moderately Emetogenic chemotherapies?

A
  1. Atypical antipsychotic: Olanzapine
  2. 5-HT3 antagonist: Palonosetron
  3. Steroid: Dexamethasone
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9
Q

What is Regimen C for Moderately Emetogenic chemotherapies?

A

3 drug regimen given right before chemo:
1. NK-1 antagonist: Aprepitant, fosprepitant, polapitant, netupitant, posnetupitant
2. 5-HT3 antagonist: Dolasetron, granisetron, ondansetron, palonosetron
3. Steroid: Dexamethasone

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10
Q

What is the regimen for Low Emetogenic chemotherapies?

A

Only need 1 drug:
- Dexamethosone
- Metoclopramide
- Prochlorperazine
- 5HT3 antagonist (dolasetron, granisetron, ondansetron)

*can also add lorazepam or H2RA/PPI if needed (just like the other ones)

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11
Q

What can we give for breakthrough nausea and vomiting for CINV?

A

To take home in case they have N/V after they leave the clinic.
*Want to chose something different from what they just had in clinic.

  • Dopamine receptor antagonists (haloperidol, metoclopramide)
  • Phenothiazines (prochlorperazine, promethazine)
  • Antypsychotic (olanzapine)
  • Benzodiazepine (lorazepam)
  • Cannabinoids (dronabinol, nabilone)
  • Serotonin antagonists (dolastreon, ondansetron, granisetron)
  • Steroids (dexamethasone)
  • Anticholinergic (scopolamine)
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12
Q

What can we give for delayed CINV?

A

Typically involves use of one of the following: dexamethasone, NK-1 antagonist, olanzapine

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13
Q

What can we give for anticipatory nausea and vomiting (CINV)?

A
  1. Prevent it (use antiemetic therapy during every cycle of treatment)
  2. Behavioral interventions (hypnosis, exercise, etc.)
  3. Acupuncture
  4. Lorazepam
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14
Q

What are the common toxicities of the agents we use to prevent CINV?

A

5HT3 antagonists - headache, constipation, QTc prolongation

Corticosteroids - anxiety, insomnia, hyperglycemia

Substance P antagonists (NK1 antagonists) - hiccups, drug interactions

Dopamine antagonists - extrapyramidal side effects, diarrhea, sedation

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15
Q

What is the pathophysiology of mucositis and how do you treat/prevent it?

A

Muscositis can range from mild inflammation to bleeding ulcerations. It can be described as initiation, upregulation with generation of messengers, signaling and amplification, ulceration, then healing. It normally progresses in a step wise fashion in parallel with the patient’s nadir (lowest point the pt’s WBC count goes after chemo).

Prevention: avoid rough foods, salty/acidic foods; eat soft or liquid foods; avoid smoking and alcohol

Pain management: Topical anesthetics (lidocaine, diphenhydramine, etc.); oral cryotherapy (ice), oral and parenteral opioid analgesics

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16
Q

How do you prevent and treat neutropenia associated with chemotherapy use?

A

*always check blood counts before chemo (WBC, platelets, RBC)
- low WBC -> infections, low platelets -> bleeding, low RBC -> fatigue
- Generally, nadir occurs 10-14 days after chemo then the counts recover by 3-4 days

Prophylaxis: Use colony stimulating factors (CSFs)! Given after chemo
- filgrastim, pefligrastim (more expensive and longer 1/2 life), biosimilars

Primary Prophylaxis:
- given to pts who have a chemotherapy regimen that is expected to cause ≥20% incidence of febrile neutropenia
- high risk patients that had/have pre-existing neutropenia, extensive prior chemotherapy, or previous irradiation or the pelvis or other areas containing large amounts of bone marrow

Secondary prophylaxis:
- given to patients who have experienced neutropenic episode previously

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17
Q

How do we approach thrombocytopenia and anemia in chemotherapy patients?

A

Thrombocytopenia:
Always looks at platelet count. A lot of times, people can live with low platelets, but if the pt needs platelets, we will give them platelets.

Anemia:
When the Hgb drops under 11, evaluate the causes of anemia. Should transfuse the patient if symptomatic (ex. SOB, heard time moving around). We can use iron and consider use of erythropoietic stimulating agents (ESA - don’t use these much anymore).
- ESAs not recommended if pt is receiving myelosuppressive chemo w/ curative intent, if they are not receiving chemo, if they are receiving non-myelosuppressive chemo.
- Consider ESA use in pts with cancer and CKD, pts undergoing palliative chemotherapy, pts without other identifiable causes.

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18
Q

What are the common toxicities that are associated with chemotherapeutic agents and how do we manage them? (5 toxicites)

A

Myalgias/Arthralgias: (taxanes, aromatase inhibitors, exemestane)
- Treat with NSAIDS (maybe opioids)

Hemorrhagic cystitis: (cyclophosphamide, ifosfamide)
- Treat with hydration (prevention) and Mesna (prevent)

Heart Failure: (anthracyclines, HER2 therapies (trastuzumab), cyclophosphamide)
- Monitor cumulative dose, assess for risk factors, and use Dexrazoxane

Peripheral neuropathy: (taxanes, vinca alkaloids, platinums)
- Treat by changing infusion rate (paclitaxel) and using adjunctive pain meds (ex. gabapentin, amitriptyline)

Pulmonary toxicities: bleomycin
- Treat with corticosteroids

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19
Q

What are the differences in cardiotoxicity from chemotherapeutic agents? (acute, chronic, vs. late onset)

A

Caused by the formation of iron-dependent oxygen free radicals due to stable anthracycline-iron complexes, which cause electron transfers
- There are low levels of enzymes in the heart that can break down the free radicals.
- This damage is irreversible

Acute: occurs immediately after single dose or course of therapy with an anthracycline.
- Uncommon, transient

Chronic: onset w/in a year of receiving anthracycline therapy
- Common & life-threatening, related to cumulative dose the pt received

Late-onset: develops several years or decades after therapy
- manifests as ventricular dysfunction, CHF, conduction disturbances, arrhythmias
- more often in childhood/adolescent cancer survivors

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20
Q

What is different between anthracyclines and HER2 inhibitors in regard to cardiotoxicity? Can you use the HER2 inhibitor again if it causes cardiotoxicity?

A

Trastuzumab: REVERSIBLE
- mechanism involves EGFR pathway, which blunts the effects of stress signaling pathways that are required to maintain cardiac function.
- In the case of toxicity, stop the drug & wait for it to go back to normal, then you can restart

Anthracyclines - IRREVERSIBLE

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21
Q

Why do patients with cancer have pain?

A
  • The cancer itself
  • The cancer may invade into nerves, causing neuropathic pain
  • Disease can invade into organs, such as liver mets or brain mets
  • Surgery
  • Treatment related, such as radiation or chemotherapy
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22
Q

How do we assess pain?

A

OPQRSTU:
- O: onset of pain
- P: what provokes the pain
- Q: quality of pain
- R: does the pain radiate
- S: how severe is the pain (0-10)
- T: time of pain
- U: understanding of what is happening/expectations

  • Do you have other symptoms associated with pain
  • Regular bowel movements?
  • What medications have you used in the past?
  • Any medication allergies?
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23
Q

How do we make a treatment plan for pain management based on patient specific factors?

A

We need to understand the cause of the pain, combine maintenance meds with PRN therapies, recognize pain treatment is based on the individual, monitor therapeutics/adverse effects, use the lowest doses necessary.

Patient specific factors: pain severity, medication access, hepatic/renal function, previous analgesic therapy

  1. non-opioid +/- adjuvant
  2. opioid for mild-mod pain +/- non-opioid +/- adjuvant
  3. opioid for mod-severe pain +/- non-opioid +/- adjuvant
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24
Q

What are the non-opioid, combo/mild opioid, and opioid products we have for pain? What are the important max doses?

A

non-opioids (pain 1-3): APAP (4g max), ibuprofen (3200mg max), aspirin

combo products/mild opioids (pain 4-6): hydrocodone/APAP, oxycodone/APAP, tramadol, codeine/APAP, etc.
- max dose based on either APAP or ibuprofen

opioid (7-10): morphine (most common), hydromorphone, oxycodone, fentanyl, methadone
- max dose to respiratory depression

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25
What insufficiencies should we be cautious with for morphine, hydromorphone, oxycodone, fentanyl, methadone
Morphine: most common - metabolized in the liver (caution) - excreted renally (caution) Hydromorphone: - metabolized in the liver (caution) - excreted renally (caution) Oxycodone: - metabolized by CYP2D6 (liver) - no IV formulation Fentanyl: most potent - safe in liver and renal dysfunction - very toxic Methadone: - don't use in sever liver dysfunction - no adverse effects in renal failure - t1/2 is very unpredictable
26
When should we consider methadone for cancer patients? When should we avoid methadone?
Consider: - true morphine allergy - opioid-induced ADRs - pain refractory to other opioids at high doses - neuropathic pain - in need of long-acting oral dosage form at low cost Avoid: - numerous drug interactions - risk for syncope or arrhythmias - hx of unpredictable adherence - poor cognition
27
What toxicities are we worries about in opioid treament and how do we manage? (7)
Constipation - always add a bowel regimen (pts never develop tolerance to constipation Sedation - tolerance helps, hold sedatives, consider dose reductions N/V - change opioid, consider adding anti-emetic Pruritus (itching) - decrease dose, change opioid, add anti-histamine Hallucinations/confusion/delirium - decrease dose, change opioid, consider adding neuroleptic medication Myoclonic jerking - consider changing opioid or treating underlying causes Respiratory Depression - hold opioid, give low dose naloxone (give slowly)
28
What are other pain treatment modalities aside from traditional pharmaceutical agents? (5)
- PCA: patient can choose when to administer their doses of pain meds to a certain point (IV) - Celiac plexus block: the celiac plexus is a group of nerves that supply the organs in the abdomen. Here, the pain medications are ineffective. So we deactivate the nerves through a procedure. Used commonly with pancreatic cancer patients. - Intrathecal pain pump: similar to insulin pump. It's implanted into pt spine. Used in pts who are refractory to other opioid therapy or increased toxicities. The meds are way more potent through this route (300:1) - Radiation therapy: Can treat metastases. - Bisphosphonate therapy
29
What is the pathophysiology of thrombosis in a cancer patient?
The tumor cells can produce procoagulants and fibrinolytic activity. This directly increases blood clotting through thrombin & fibrin formation. Additionally, adhesion receptors are expressed that release cytokines and angiogenic factors. This activates host cell procoagulant and pro-adhesive cells. Both of these processes together result in a hyper-coagulable state.
30
What are some risk factors for VTE in cancer (patient and cancer, treatments, modifiable)
Patient and Cancer: - Active cancer - Advanced stage cancer - Cancer type - Older age - Poor performance status - Medical co-morbidities Treatment: - Major surgery - Central venous catheter - Chemotherapy - Exogenous hormone therapy - ESAs Modifiable Risks: - Smoking - Obesity - Activity level
31
What are the treatment options for anticoagulation therapy in patients with cancer?
Monotherapy: start pt on monotherapy for a minumum of three months, continue indefinitely while cancer is active, or if other risk factors persist. If catheter related, can stop after 3 months - DOACs: preferred in pts w/o gastric or gastroesophageal lesions (low VTE recurrence, but these have higher relevant non-major bleeding) - LMWHs: preferred in pts w/ gastric or gastroesophageal lesions - Factor XA inhibitors: - UFH Combo therapy: minimum of 3 months, stop at 3 months if catheter related - LMWH -> Edoxaban - LMWF/UFH/Fondaparinux -> Warfarin - If cannot have LMWH: LMWH/UFH -> Dabigatran
32
What are the standard screening guidelines and how do we apply those to specific cancers? (breast, prostate, colon, lung, cervical, melanoma)
Breast: breast self exam once 20 years old, annual mammogram from 45-54 (can start at 40), biennial mammograms at 55 years old Prostate: Men at least 50yo, so annual screening if PSA is over 2.5 ng/mL, every 2 years if <2.5 ng/mL +/- digital rectal exam (DRE); High risk pts should start discussion at 45 years old - 1º degree relatives with prostate cancer puts pt at higher risk, AA race, increasing age, abnormal DRE Colon: screen once 25 years old regardless of male/female, colonoscopy every 10 years - detect cancer: annual fecal occult blood test (FOBT) shows many false positives; annual fecal immunohistochemical test (FIT) also test Hb w/o the false +; FIT DNA tests Hb and DNA biomarkers - detect cancer and advanced lesions: endoscopy/colonoscopy every 10 years Lung: low dose CT scans - consider in pts age 55-74 w/ 30 year pack smoking history, still smoking or have quit w/in last 15 years, and willing to have curative lung surgery if detected Cervical: No effective screening tool, just do annual physical and pelvic exam. If high risk, can start pelvic exams/ultrasounds every 6-12months starting at age 25-35. Melanoma: examine your skin, high-risk pts can receive yearly clinical exams
33
What are the standard prevention guidelines across different tumor types? (breast, prostate, colon, lung, cervical, melanoma)
Breast: high risk patients (BRCA mutations) can talk about surgeries (prophylactic mastectomy, bilateral oophorectomy); tamoxifen decreases risk (some bad side effects), raloxifene decreases risk & both FDA approved Prostate: finasteride decreases risk & is FDA approved Colon: diet (high fiber, low fat, calcium rich), NSAIDs/ASA/celecoxib may decrease risk, but increased risk for bleeding, so we don't really use. Lung: Stop smoking Cervical: oral contraceptives, prophylactic oophorectomy, have children Melanoma: sunscreen >SPF 15, avoid tanning beds
34
What are the risk factors for developing breast cancer?
- Risk increases with age - family history (& BRCA-1 and 2) - previous breast cancer - radiation from prior treatment for environmental radiation exposure - estrogen exposure endogenously or exogenously - alcohol - prior breast biopses with proliferative histology - last first birth (>30yo) or never having kinds - elevated BMI - Diet *more than 60% of pts will not have any risk factors
35
How does breast cancer staging dictate our goals for their therapy?
*adjuvant = therapy after surgery; neoadjuvant: therapy before surgery Stage I, II, IIIA - our goal is to cure. Surgery is involved. Some II and IIIA patients will do neoadjuvant therapy (larger tumors). Most patients will do adjuvant therapy. Stage IV (metastatic): Goal is no longer to cure. Treatment is palliative and mostly involves chemo, hormonal, +/- biologics, +/- immunotherapy. Surgery only used for symptomatic relief.
36
What are the therapies we have for breast cancer? (hormonal (3 classes), chemotherapy (3 classes), biological, radiation, surgery)
hormonal therapy: - tamoxifen: SERM, remember DVT and endometrial cancer adverse effects - Leuprolide, Goserelin: LHRH analogs, use in premenopausal women (ovarian suppression) - letrozole, anastrozole, exemestane: use in post-menopausal women (or use ovarian suppression if premenopausal), watch out for osteoporosis chemotherapy: - doxorubicin: anthracyclin (cardiotoxicity) - cyclophosphamide: alkylating agent - paclitaxel: taxane (microtubule inhibitor) biological therapy - trastuzumab (don't use with doxorubicin due to cardiotoxicity) - pertuzumab - CDK4/6i: abemaciclib, palbociclib, ribociclib radiation surgery
37
how do we decide treatment for hormonal therapy in breast cancer?
If tumor is small (≤0.5cm): hormonal therapy - if HER2 positive, give HER2 targeted therapy if tumor is bigger than 0.5cm or 1-3 pos nodes, do the oncotype dx test: - if low risk (<26), pt needs hormonal therapy only if high risk (≥26), pt needs hormonal and chemo - if HER2 positive, give HER2 targeted therapy if pt is premenopausal at diagnosis, we will likely give aromatase inhibitors + ovarian suppression for 5 years. At the 5 year mark, we may do an additional 5 years. (could also do tamoxifen) if pt is postmenopausal at dx, we will likely give aromatase inhibitor for 5 years, then maybe another 5 years
38
how do we decide the chemotherapy regimen for breast cancer? (treatment for HER2- disease)?
if tumor is bigger than 0.5cm or 1-3 pos nodes, do the oncotype dx test: - if low risk (<26), pt needs hormonal therapy only if high risk (≥26), pt needs hormonal and chemo - if HER2 positive, give HER2 targeted therapy adjuvant chemo longer than 3-6 months does not improve survival in HER 2 negative disease: - Dose dense AC -> Paclitaxel: doxorubicin, cyclophosphamide, followed by paclitaxel (dose dense gives same amount of chemo in a shorter time, which is good) - If heart disease - TC: docetaxel, cyclophosphamide
39
What 3 medications do we need to administer with paclitaxel? What happens if they have had a hypersensitivity reaction to paclitaxel before?
- dexamethasone - antihistamine - famotidine give albumin bound paclitaxel to mitigate the hypersensitivity reaction
40
what treatment regimens can we use for HER2 + breast cancer?
want to do 1 full year of HER2 targeted therapy APT: (adjuvant) - paclitaxel - trastuzumab w/ first dose of paclitaxel - trastuzumab weekly TCH: - docetaxel - carboplatin - trastuzumab TCH + pertuzumab: - docetaxel - carboplatin - traztuzumab - pertuzumab *if residual disease found after surgery, can switch to ado-trastuzumab, just need HER2 therapy to be 1 year long total
41
how can we treat triple negative breast cancer?
HER2 -, ER - , PR - Immunotherapy - pembrolizumab (PD1 inhibitor) added into chemotherapy regimen AC -> Paclitaxel - doxorubicin - cyclophosphamide - pembrolizumab (for total of 1 year)
42
how can we treat metastatic breast cancer? (ER/PR+, bone mets, asymptomatic visceral disease VS ER/PR-, symptomatic visceral disease, or hormone refractory) What are the 1st line options for HER2- & post menopausal/premenopausal w/ovarian suppression?
Our goal shifts from cure to palliative care. Survival time can vary based on where the cancer is (bone and soft tissue metastases usually have better prognosis). ER/PR+, bone mets, asymptomatic visceral disease: Hormone therapy (aromatase inhibitor + CDK-i) (if bone disease, add bisphosphonate or denosumab) OR clinical trials ER/PR-, symptomatic visceral disease, or hormone refractory: - If HER2+, use anti-HER2 therapy +/- chemo: docetaxel, trastuzumab, and pertuzumab OR paclitaxel, trastuzumab, and pertuzumab - If HER2-, do chemo
43
What are the risk factors for prostate cancer?
*testosterone is a growth signal to the prostate, so if something increases exposure to testosterone, it'll increase risk of prostate cancer - age (typically ≥60 yo) - african-americans - family hx - potentially diet, occupation
44
What are 5 signs/symptoms of advanced prostate cancer?
- alterations in urinary habits - impotence - lower extremity edema - weight loss - anemia **early stage will likely be asymptomatic
45
What is used to grade prostate cancer? What PSA requires evaluation & what PSA is highly suspicious for malignancy?
Gleason score (2-10) - 2-4 are slow-growing, well differentiated -8-10 are aggressive, poorly differentiated PSA: >4ng/mL requires evaluation >10ng/mL is highly suspicious for malignancy *also look at velocity, if increase is >0.75 per year, that's suspicious
46
How do we treat localized prostate cancer?
Observation - Watch and wait. If they start developing symptoms, we can treat palliatively. - Good for an older man (don't want to be too aggressive for no reason) Active surveillance - Watch and wait. If PSA starts to go up, we are going to treat with curative intent. Radiation - external beam (radiation from the outside in) VS. brachytherapy (radiation pellets placed around prostate. This method comes with side effects and complications (ex. rectal symptoms, ED, etc.) Adrogen Deprivation Therapy - Use with radiation if pt is high risk. Use an LHRH agonist +/- antiadrogen (abiraterone, bicalutamide, etc.) Prostatectomy - definitive curative therapy. Very effective, but comes with potential complications.
47
What are the differences between m0HSPC, m0CRPC, m1HSPC low volume, m1HSPC high volume, and m1CRPC?
m1 = metastatic found on scans m0 = PSA is going up, but we can't find it on the scans HSPC = hormone sensitive prostate cancer CRPC = castrate resistant prostate cancer (failed hormone therapy) m1HSPC low volume = 1-2 mets m1HSPC high volume = numerous mets
48
How do we treat m0HSPC?
first line - palliation of disease. We want to suppress testosterone production and determine the PSA doubling time (if it doubles fast, we have progressing disease) m0HSPC - consider ADT if the PSA doubling time is less than 6 months. Can use LHRH agonists (these are reversible and as effective as orchiectomy). Also can do orchiectomy (now we no longer need LHRH agonist). - can do intermittent ADT, where we stop ADT once we lower the PSA, then start again when the PSA rises again. This can decrease side effects & cost, and it's just as effective. This is only if we have increasing PSA but we can't find mets on a scan!!
49
How do we treat m0CRPC?
This is when the PSA is still increasing, but it is not responding to ADT and there's no distant metastasis found. 1. continue ADT (usually LHRH agonist) 2. Add anti-androgen - enzalutamide: unique toxicities like causing falls, decrease seizure threshold, "enzalutamide syndrome" that causes brain fog/confusion - apalutamide: risk for seizures, falls, etc. - darolutamide: structurally different, so it has less adverse effects. Less seizures or falls. **abiraterone is not approved for m0!!!!
50
What are the LHRH agonist options that we can use for metastatic prostate cancer? What are the acute and long term toxicities associated with these?
Leuprolide, Eligard, Goserelin, Triptorelin, Histerelin *no one is better than another, just go based off of what gets paid for by insurance Relugolix - oral agent!! With less cardiovascualr events! Acute toxicities: tumor flare (give with another med (anti-androgen like bicalutamide) to reduce the flare), gynecomastia, hot flashes, ED, edema, injection site reaction Long term: osteoporosis, fracture, increase in fat mass, insulin levels, and cholesterol/triglycerides
51
How do we treat m1HSPC?
Therapy is determined based on the volume of disease. - Low volume: ~1-2 mets - High volume: numerous mets Low volume: 1. ADT 2. Continue ADT and add abiraterone+prednisone, enzalutamide, or apalutamide - abiraterone relatively well tolerated, considered better than enzalutamide. Not the best in adrenal insufficiency High volume: - could do anything that was previousy mentioned (ADT), but now chemo is an option - ADT + abiraterone + prednisone - ADT + enzalutamide - ADT + apalutamide 1. docetaxel + ADT - can do ADT + docetaxel + abiraterone/darolutamide
52
How do we treat m1CRPC?
- continue ADT - want to maintain castrate testosterone concentrations 1. Sipuleucel-T (but $$$, so not used a lot) 2. docetaxel (alone or in combo w/ abiraterone or darolutamide) 3. Cabazitaxel (unlike other taxanes) 4. more options *can do bisphosphonate or radium 223 for bone metastases. causes lots of myelosuppression though. Do radium 223 after trying bisphosphonate
53
What are the common risk factors and etiology of lung cancer? What are the important mutations?
- Smoking - Asbestos exposure - Heavy metals/ionizing radiation - Genetic predisposition Etiology: chronic exposure of epithelial cells to carcinogens, which results in chronic inflammation. This induces genetic and cytologic changes, which eventually leads to carcinogenesis. Mutations: - EGFR: mutation predicts sensitivity to tyrosine kinase inhibitors - K-RAS: mutation predicts resistance to our tyrosine kinase inhibitors - ALK: will likely be less sensitive to EGFR inhibitors and chemo - ROS-1 - BRAF V600E *pts with EGFR mutations or ALK/ROS-1 rearrangements typically don't have PD1 expression
54
What is the difference between non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC)?
Non-small cell: slower growth fraction. Moderately sensitive to radiation, marginally sensitive to chemo. - adenocarcinoma: (50%) most common in non-smokers - squamous: (30%) clearly related to smoking Small cell: (15%) related to smoking. Fast growing and rapidly progressive. Highly sensitive to radiation and chemotherapy
55
What is the clinical course and what are the treatment options for small cell lung cancer?
Limited stage: one small area they can treat with radiation Extensive stage: more than one small area if they were to treat with radiation Limited stage: curative intent - radiation + combo chemotherapy (platinum doublet: cisplatin + etoposide OR carboplatin + etoposide). *carboplatin causes less toxicity compared to cisplatin, but more myelosuppression - If pt responds really well to this treatment, we can do prophylactic cranial radiation, since over 50% of pts will develop brain metastases - After the chemo and radiation, we don't treat any further. Extensive: rarely curable - no radiation - chemo (cis/carboplatin + etoposide/irinotecan) - prophylactic cranial radiation if chemo works - now we include immunotherapy. atezolizumab or durvalumab. also can do pembrolizumab if pt failed the platinum doublet.
56
What is the clinical course and what are the treatment options for resectable non-small cell lung cancer?
- NSCLC is only moderately sensitive to radiation and has low sensitivity to chemotherapy Surgery is most efficacious for NSCLC. If this is not able to be performed, we can do radiation for early stage NSCLC Treatment: - neoadjuvant - surgery - chemotherapy (platinum doublet) followed by immunotherapy (nivolumab (PD1i) or oral agent; if non-squamous, do ciplatin + pemetrexed; if squamous, cisplatin + gemcitabine OR cisplatin + docetaxel; if someone can't tolerate cisplatin, switch to carboplatin - osimertinib is also an option (T790M)
57
What is the clinical course and what are the treatment options for unresectable non-small cell lung cancer?
If unrescetable: - chemotherapy AND radiation - if non-squamous, do cisplatin + pemetrexed - if squamous, do cisplatin + gemcitabine OR cisplatin + docetaxel - for late stage III and IV disease, no platinum doublet is better than another - also immunotherapy for up to a year
58
What is the clinical course and what are the treatment options for advanced/metastatic non-small cell lung cancer?
If a patient has a targetable mutation and is PD-L1+, it is preferred to use the oral therapies first, then move to immunotherapy later. - Osimertinib: 1st line for EGFR mutations - Dabrafenib + Trametinib: 1st line for BRAF therapies - Sotorasib: K-RAS G12C Mutation If no mutation, or if targeted oral chemotherapy options have been exhausted, check the PD-L1 status (use pembrolizumab) - non-squamous mutation negative, do carboplatin + pemetrexed + pembrolizumab - squamous, do platinum doublet + immunotherapy if they can tolerate both: pembrolizumab + carboplatin + paclitaxel (or albumin bound)
59
What are the newer target lung cancer therapies? How are they incorporated into patient treatment plans?
New immunotherapies have shown to be effective - atezolizumab - durvalumab - pembrolizumab these can be added to extensive small cell lung cancer
60
What are the common toxicities associated with therapies for lung cancer?
Immunotherapy toxicities: tissue inflammation pretty much anywhere Rare and serious immune mediated toxicities: - pneumonitis - colitis - hepatitis - nephritis - endocrine (thyroid, pituitary)
61
What is the epidemiology of colon cancer?
3rd leading cancer in incidence and death in men and women. - about 100,000 new cases in 2023 with around 50,000 deaths The 5-year survival is around 91% in early disease. More and more young people are getting diagnosed with colon cancer. - This means colon cancer screening is very important
62
What are the risk factors associated with colon cancer?
- age (increases after 40 years old, even greater after 50 years old) - family hx of colon cancer - polyps can go onto turn into cancer - dietary factors (high fat, low fiber, reduced folate, reduced calcium) - lifestyle (alcohol, smoking, obesity) - Ulcerative colitis (Crohn's disease) results in 5-10x higher risk - Familial Adenomatous Polyposis (FAP) -> nearly 100% lifetime risk - Hereditary Nonpolyposis Colorectal Cancer -> 80% risk
63
What is the pathophysiology of colon cancer?
Malignant polyps grow from inner basement membrane of the bowel wall outward into the mucosa, submucosa, muscularis, and serosa. It can/will spread via lymphatic and hematogenous routes to the lymph nodes, lungs, liver, and bone *testing for MSI (microsatellite instability) can tell us whether or not to use chemo. dMMR (DNA mismatch repair) means immunotherapy will work well
64
What is the role of surgery, radiation, and chemotherapy for management of early-stage colon cancer?
For stage I-III, curing is the goal. Stage I: surgery & that's probably it. Stage II: no chemo (unless certain high risk people), yes surgery. If a patient has MSI high disease, chemo will not be a benefit!! No chemo for these people. - must test for MSI!!!! - IF we give chemo, it'll be FOLFOX (5-FU, Leucovorin, and Oxaliplatin) OR CapeOX (capecitabine and oxaliplatin) Stage III: surgery & give chemo - FOLFOX or CapeOX - for low-risk people, CapeOx for 3 months was just as or more effective than FOLFOX for 6 months (can still do FOLFOX for 6 months if needed) - for high-risk people, FOLFOX for 6 months was more effective than CapeOx for 3 months (can still do CapeOx for 6 months if needed)
65
What is the role of surgery, radiation, and chemotherapy for the management of metastatic colon cancer?
Goal is now palliation. Chemotherapy is the mainstay of therapy. (surgery or radiation not really common, but maybe if it would help their pain) - FOLFOX: 5-FU, Leucovorin, Oxaliplatin - CapeOx: Capecitabine, Oxaliplatin - FOLFIRI: 5-FU, Leucovorin, Irinotecan (don't give if UGT1A1 mutation) - If pt fails FOLFOX, try FOLFIRI next. If patient first failed FOLFIRI, try FOLFOX. You can add other Abs like (EGFR inhibitors for VEGF inhibitors as long as no KRAS mutation) MIGHT use immunotherapy, but usually will only give this after they've failed our other treatments. - K-RAS is important in metastatic setting. If they have this mutation, we know they will not respond to cetuximab and panitumumab. We should test for this in metastatic disease every time! - Test for BRAF too!!
66
What is important to know about 5-FU, Leucovorin, Irinotecan, Oxaliplatin, Capecitabine, Cetuximab/Panitumumab, Bevacizumab
5-FU: binds to thymidylate synthase; extensively metabolized by DPD; causes diarrhea, mucositis, fatigue Leucovorin: used with 5-FU to increase efficacy Irinotecan: Diarrhea huge problem (can be acute). Make sure to get OTC imodium & give atropine during. Oxaliplatin: Neuropathy and cold intolerances Capecitabine: hand-foot syndrome and diarrhea Cetuximab & Panitumumab: mAb, EGFR inhibitor, only use in KRAS wild type patients. Can cause acneform rash (really severe) and hypomagnesemia Bevacizumab: HTN, proteinuria
67
What is the pathogenesis of melanoma?
Melanocytes are dendritic pigmented cells that arise from neural-crest tissue during early fetal development and migrate to sites within the body. These are located in the skin, uveal tract, meninges, and ectodermal mucosa. Melanocytes synthesize melanin to protect tissues from UV radiation induced damage. Melanoma results from the malignant transformation of skin melanocytes. There are many growth factors, immune factors, and tumor antigens that are identified in the progression of melanoma (ex. BRAF!!!, MEK, PI3K, etc.)
68
What are some risk factors for melanoma?
- Genetic factors (familial atypical multiple mole syndrome (FAMMs) or hereditary dysplastic nevus syndrome (HDNS)) - Exposure to sunlight (esp. UV B) - People who sunburn easily - Immunosuppression
69
Describe superficial spreading melanoma, nodular melanoma, lentigo maligna melanoma, acral lentiginous melanoma, uveal melanoma
Superficial spreading melanoma: - most common, 70% of cases - initially is flat, but becomes irregular and symmetrical Nodular melanoma: - 15% of cases - strictly vertical growth, more aggressive tumors - appear blue/black, usually raised and symmetrical - more common in men, usually appear on head, neck, and trunk Lentigo maligna melanoma: - in frequent - on elderly patients - tan lesion Acral lentiginous melanoma: - on palms, soles, under nails Uveal: - In the eye
70
What are the ABCDE's for melanoma skin lesions?
Asymmetric Have irregular borders Wide variety of colors Diameter of >6mm Evolution of a mole
71
How do we treat melanoma stage IB-IIA or IIB-IIC?
If you can remove it, remove it!! IB or IIA: - clinical trial or observation IIB or IIC: - clinical trial, observation, maybe pembrolizumab
72
How do we treat melanoma stage III
Remove it, then use these: - Nivolumab (PD-1i) - Pembrolizumab (PD-1i) - If BRAF mutant: dabrafenib/trametinib - +/- radiation
73
How do we treat unresectable stage III melanoma with in-transit lesions?
- talimogene laherparepvec (T-VEC) - topical imiquimod - radiation - isolated limb perfusion
74
What is our first line therapy for metastatic melanoma?
First line treatment options: - Anti-PD-1 monotherapy: nivolumab or pembrolizumab - combo BRAF therapy: dabrafenib/trametinib, vemurafenib/cobimetinib, encorafenib/binimetinib - certian circumstances: nivolumab/ipilimumab (if the pt is young and willing to go through all of the side effects Start with targeted therapy first if the pt tests positive. - chemo rarely cures patient, so we don't usually use it. Immunotherapy is MUCH more effective.
75
What is the pathophysiology of ovarian cancer?
The exact cause is unknown, but the risk increases with # of ovulations. It is thought that the repairing of the epithelial lining of the ovaries after ovulation is one of the origins of cervical cancer.
76
What are the common signs and symptoms of patients with ovarian cancer?
If experiencing any of these symptoms for more than 12 days of the month for 2 months, pt should go see provider. - Increased abdominal size - Abdominal bloating - Fatigue - Abdominal pain - Indigestion Advanced disease symptoms: - Ascites - Pleural effusion - Constipation - Small bowel obstruction - Nausea or vomiting
77
What are the treatment options for first line therapy in ovarian cancer?
Goal: cure!! - Surgery + adjuvant chemotherapy - Relapse may occur (70-90% of patients recur in first 3 years). In this case, therapy is palliative. - Want to test for mutations so we can use that to determine therapy. About 50% of pts have defects in genes due to homologous recombination deficiency.
78
What are the different treatment options for metastatic ovarian cancer? (7 steps starting at neoadjuvant, ending with maintenance therapy of recurrence)
- Maybe neoadjuvant, platinum based chemo - Surgery: take out everything. Depending on how much disease is left after surgery, we know prognosis (<1cm of disease left is optimal) - Adjuvant platinum based chemo: 90%+ we will do chemo, since they will likely present with stage III. Do paclitaxel + carboplatin q3weeks!!! *carboplatin is dosed using the Calvert equation, which reflects renal function and uses AUC* - Frontline maintenance therapy (PARP inhibitors) - Relapse - Recurrence therapy - Maintenance therapy of recurrence (PARP inhibitors again)
79
How do you define cervical cancer recurrence? What are the treatment options for these types of cervical cancer?
Platinum sensitive: greater than 6 months since platinum containing treatment - Give same agents again (ex. paclitaxel/carboplatin) Platinum resistant: less than 6 months since platinum containing treatment - Single agent therapy (ex. doxorubicin) so we have less toxicities Platinum progressive: no response during primary platinum containing therapy. - did not mention
80
What is the difference between Type 1 and Type 4 hypersensitivity reactions? What are the standard pre-medications we use for paclitaxel and docetaxel?
Type I - immediate; experience anaphylaxis, itching, rash, and chest tightness Type 4 - seen when there's repeated exposure to the agent; experience erythema, induration - Allergic to drug itself: These patients need desensitization. Symptoms persist after stopping - Infusion related reaction: Paclitaxel (cremophor), Taxane (liposome) Decrease infusion rate. Symptoms resolve quickly after stopping infusion - Carboplatin can cause type 4 reaction (usually around cycle 7-8) Pre-medications for paclitaxel: - Dexamethasone - Famotidine - Diphenhydramine *for docetaxel, just do dexamethasone*
81
What PARP inhibitors do we have for ovarian cancer? When can you use them? What adverse effects do we monitor for?
These inhibit PARP, which prevents DNA repair, leading to cell death. Olaparib: use for 1st line maintenance if BCRA mutation present, use for maintenance after relapse regardless of BRCA variant Niraparib: use for 1st line maintenance regardless of BRCA variant, use for maintenance after relapse if BCRA mutation Rucaparib: use for maintence after relapse if BCRA mutation *monitor CBCs (anemia, thrombocytopenia side effects)
82
What are the different grades of hypercalcemia? How do you calculate corrected calcium?
hypercalcemia of malignancy - elevated calcium level in a patient with cancer (most common with lung and breast cancer) mild: (<12mg/dL) may not be able to tell at this stage moderate: (12-14mg/dL) start to see more symptoms like lethargy, confusion, and muscle weakness severe: (>14mg/dL) seizures, stupor, coma corrected calcium: serum calcium + 0.8 (4 - serum albumin)
83
What are the risks and benefits of bone modifying agents?
Risks: - osteonecrosis - hypocalcemia (give supplemental calcium and vit D if using agents for prevention)
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What are the risk factors associated with skeletal related events?
Women: breast cancer - age/post-menopausal - use of aromatase inhibitor - smoking - BMI less than 20 Men: prostate cancer - smoking - androgen deprivation therapy
85
What are the treatment options for mild hypercalcemia of malignancy (asymptomatic vs. mild)?
Mild w/ no or mild symptoms: - encourage hydration - d/c medications that increase serum calcium (ex. calcium supplements) - repeat calcium level in 4 weeks Mild with symptoms: - hydration (200-400mL/hr of NS) - maybe IV bisphosphonate (ex. zoledronic acid, pamidronate)
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What are the treatment options for moderate and severe hypercalcemia of malignancy?
Moderate: - Hydration: IV fluids - no loop diuretic - IV bisphosphonate (zoledronic acid, pamidronate): these inhibit osteoclast activity, decrease bone resorption, and increase mineralization. They concentrate at active bone remodeling sites Severe: - HYDRATION 200mL/hr - IV bisphosphonate - calcitonin (if nothing else is working)
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What are the treatment options for refractory and chronic hypercalcemia of malignancy?
Refractory: - phosphate binders - drives calcium into tissues. Not used that often - gallium nitrate - Inhibits bone resorption. Not used that often. - denosumab - RANK-L inhibitor. This inhibits osteoclast activity. It's approved and used. Chronic: - Zoledronic acid monthly - Pamidronate monthly
88
What are some skeletal related events that we try to prevent? How do we try to prevent them? What dosing adjustment is needed? What is the main adverse effect from these therapies?
Skeletal related events: pathologic fracture, need for bone radiation, need for bone surgery, spinal cord compression, hypercalcemia Symptoms: bony pain or tenderness Diagnosis: scans Goal: help with pain and stop further destruction of the bone - radiation (only do radiation to the area one time) - chemo to treat the cancer - bisphosphonates (delays time to first SRE by 50%): pamidronate, zoledronic acid *renal adjustment dosing is needed (CrCL) - denosumab: use in refractory, SQ (not IV), no renal adjustment needed Adverse effect: osteonecrosis of the jaw
89
What is the CrCL equation?
(140-age) (body weight in kg) / (Scr) (72) *multiply by 0.85 if female
90
What is tumor lysis syndrome? Which patients are at high risk of TLS?
Tumor Lysis Syndrome (TLS) - constellation of metabolic derangements resulting from the death of malignant cells. It's a massive release of intracellular contents into the bloodstream that overwhelms the body's homeostasis. - Mostly occurs 1-5 days after treatment, but can also happen spontaneously - Will see hyperkalemia, hyperuricemia, hyperphospahtemia, and HYPOcalcemia High risk: associated with aggressive hematologic malignancies, but also seen in solid tumors - high tumor burden - high tumor grade with rapid cell turnover - treatment sensitive tumors - old age - pre-existing renal impairment - concomitant use of drugs known to increase uric acid (ex. aspirin, alcohol, thiazide diuretics, caffeine)
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What is the appropriate treatment strategy for a patient experiencing tumor lysis syndrome?
*prevention and immediate management is key 1. Identify high risk patients - proactively implement aggressive prophylactic strategies to prevent and/or reduce severity of TLS 2. Monitor electrolytes before and during cytoreductive regimens 3. Aggressive hydration - this enhances urine flow, which promotes uric acid and phosphate excretion. Want to maintain a urine output of 80-100 mL/m2/hr 4. Control hyperuricemia with uric acid lowering drugs (allopurinol for low-intermediate risk, since it can't break down uric acid that's already formed, & rasburicase for high risk, since it breaks down uric acid that's already been formed) *manage hyperkalemia w/ fluids/loop diurectics, hyperphosphatemia w/ phosphate binder, do not treat asymptomatic hypocalcemia
92
What is the appropriate treatment for patients experiencing malignant spinal cord compression?
*early diagnosis and treatment are essential to prevent permanent neurologic damage and possible paralysis - Start steroids immediately (dexamethasone) - Surgery and radiotherapy (if pt is not a surgical candidate) are the only treatments that leads to immediate relief of MSCC - Bisphosphonates
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What are the presenting symptoms in patients with superior vena cava syndrome? What are 3 ways we use to alleviate symptoms/treat SVC syndrome?
- facial and arm edema - distention of the superficial neck and chest wall veins - hypotension - dyspnea at rest - cough - stridor - dysphagia - headaches -syncope - dizziness Treatment: - elevation of the head - steroids (if tumor is steroid sensitive & if pt undergoing radiation therapy) - diuretics
94
What are the different treatment strategies for managing malignant pleural effusions?
Thoracentesis: needle aspiration of fluid from a pleural effusion. The fluid usually comes back within 30 days, but it's useful for pts who have a lifespan of 1-3 months. Pleural Fluid Analysis: send fluid to get tested in order to distinguish the type of pleural effusion Pleurodesis: This activates the inflammatory cascade, leading to adhesion of pleural layers. This is useful for pts who have a lifespan of longer than 1-3 months. Pleural Catheter: Drains the pleural space frequently. Pleurectomy: Removal of part or all of the pleura. This is beneficial for patients with prolonged life expectancy or patients with uncontrolled pleural effusions.
95
What is a lymphoma? What are the 2 major types of lymphomas? What type of treatment is the mainstay? Are these usually curable or not?
Malignant transformation of lymphocytes that form solid tumors of the immune system. - Lymphatic system is in the lymph nodes & lymph vessels - Most commonly it's the B cells that become malignant (T cells and NK cells are also lymph cells) Major types: 1. Hodgkin lymphoma: Reed-Sternberg cells 2. Non-Hodgkin Lymphoma (anything else) *Chemotherapy is the backbone of treatment. *Many subtypes are curable.
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How do patients with HL (hodgkin lymphoma) present?
B symptoms - Fever (over 38º C) - Drenching night sweats - Unintentional weight loss of greater than 10% in less than 6 months Painless, rubbery, enlarged lymph node Itchiness
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What is our goal for treatment of HL? How do we treat it?
Goal: Cure while minimizing toxicities and long-term complications Options: - Combination Chemo: ABVD & AAVD - Radiation - Autologous stem cell transplant IA, IIA Favorable: - RT alone - ABVD + RT - ABVD Stage I-II Unfavorable: - ABVD + RT Stage III/IV: - ABVD +/- RT - AAVD (maybe more efficacious, but also more cautious) preferred in younger patients After relapse, we do autologous stem cell transplant. After transplant for high risk patients, we can do maintenance brentuximab vedotin.
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What is the difference between ABVD and AAVD? If counts are low, do we give the chemo?
A - Doxorubicin B - Bleomycin V - Vinblastine D - Dacarbazine *pulmonary toxicity A - Doxorubicin A - Brentuximab vendotin (antibody drug conjugate) V - Vinblastine D - Dacarbazine *increased risk of peripheral neuropathies Both ABVD and AAVD have cardiotoxicity, myelosuppression, and N/V YES, even if counts are low, we will give chemo!!! (rates of infection are low)
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How do patients with NHL (non-hodgkin lymphoma) present?
Presentation depends on tumor location: - B Cell: (85%) lymph nodes, spleen, bone marrow - T Cell: (15%) extra nodal sites (skin and lungs) Lymphadenopathy (can lead to organ dysfunction) B symptoms (40%) Extranodal involvement in 10-35% of patients (GI tract/skin most common, testes, and bone)
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What are the differences between hodgkin and non-hodgkin lymphoma? (# of nodes, type of spread, Waldeyer ring involvement, extranodal presentation) What is the % survival for these all together?
Hodgkin: - often localized to single group of nodes - orderly spread - Waldeyer ring rarely involved (tonsils) - extranodal presentation is rare Non-Hodgkin: - more frequent involvement of multiple peripheral nodes - noncontinuous spread - Waldeyer ring commonly involved - Extranodal presentation is common 5-year overall survival is over 70%!
101
How do we approach treatment for Follicular Lymphoma (NHL)?
Indolent: grade 1 and 2; only treat if the pt is symptomatic (increasing adenopathy, organ compromise, bone marrow failure) Aggressive: 1st line: Bendamustine + Rituximab, R-CHOP, R-CVP, or Rituximab + lenalidomide 1st line for elderly: rituximab is preferred
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What is a Richter's Transformation? What do we need to treat?
Richter's Transformation: When a follicular lymphoma switches to a DLBCL. - It takes about 5 years for a low-grade NHL to switch. - Once it switched, median survival is about 2 years. Chemo can cure the DLBCL, but they still have the follicular lymphoma, so we have to cure that. - Treat the same as aggressive lymphomas
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How do we treat Diffuse Large B-Cell Lymphoma (NHL)? What are the bad mutations with DLBCL?
- MYC, BCL2, and BCL6 translocations can be double/triple hit cancers, which are more aggressive and do not respond well to chemo. R-CHOP: rituximab (CD20), cyclophosphamide, doxorubicin, vincristine, prednisone Pola+R+CHP: polatuzumab vedotin (targets B cells specifically), rituximab, cyclophosphamide, doxorubicin, prednisone - $$$, but improves progression free survival. May be better for high IPI score pts. Stage I-II: can do 3 cycles of R-CHOP + RT or 6 cycles of R-CHOP Stage III-IV: 6 cycles of either R-CHOP or 6 cycles of Pola+R+CHP if IPI at or over 2
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What is important about using Rituximab and Hepatitis B?
Rituximab is an anti-CD20 antibody. Hep B viral reactivation is seen in patients who receive anti-CD20 monoclonal antibody-based therapy, which can cause liver failure and death. Need to test for Hepatitis B surface antigen (HBsAg) and hepatitis B core antibody (HBcAb) before anti-CD20 directed therapy If positive, we should treat with entecavir 0.5mg daily
105
What should we do if a "cured" DLBCL patient relapses?
Still have curative intent! - Salvage chemotherapy followed by autologous stem cell rescue. We need to prove that chemo can still be efficacious in these patients. If the disease shrinks by at least 50%, then they can do autologous stem cell treatment. - If they don't respond to chemo, we can do CAR T-cell therapy (genetically engineer T cells to target the tumor) - Also can do BiTEs (3rd line option after at least 2 lines of systemic therapy) - for palliative (not curative), we could do bendamustine + rituximab + polatuzumab
106
What is Burkitt's Lymphoma and how do we treat it? How does AIDS impact the likely hood of getting a lymphoma? How do we treat AIDS related lymphoma?
Burkitt's Lymphoma is the highly aggressive form of DLBCL. It always has a MYC gene translocation. - It has a 2 year survival of 70-80% - Treated by intensive multi-agent chemotherapy AIDS Related Lymphoma - You have a 100x increased risk of NHL compared to general population when you have AIDS. It occurs late in the HIV course. - 95% are B cell lymphomas - Treatment is HAART (normal HIV treatment) + chemotherapy
107
What is the pathophysiology of Multiple Myeloma? How do these patients present?
Plasma cells become malignant, called M-protein. Multiple myeloma cells are long-lived and slowly proliferate (normal plasma cells die off after a few days). These M-proteins secrete immunoglobulins (60% IgG) that do nothing helpful, only wreak havoc. - MM is a progressive disease Presentation: CRAB symptoms! C - hypercalcemia (>11.5mg/dL) R - renal dysfunction (SCr >2 or CrCL <40) A - anemia (<10g/dL or 2g/dL below normal) B - bone (one or more osteolytic lesions or pathologic fracture
108
How do we treat multiple myeloma?
This is chronic and incurable, so our ultimate goal is to give them high doses of chemo to get them into remission for as long as possible, also hoping to get them an autologous transplant. - 3 drug chemo regimen - steroids (dexamethasone), immunomodulatory drugs (lenalidomide), proteasome inhibitors (bortezomib)
109
Chronic Myeloid Leukemia (CML) - Pathophysiology and how do patients present? What is the medical emergency associated with this?
Unregulated myeloid proliferation that results in mature neutrophil production. So these cells accumulate but they don't die. In 95% of cases, the Philadelphia chromosome is present (BCR-Abl or chromosome 22 translocation), which results in constitutively active tyrosine kinase. Presentation: - Just found during routine examination or CBC - Will be extremely high white blood cell count (300-500k) Leukostasis - blood is super thick due to all the white cells, which causes a thrombosis effect. These pts can present with stroke like, arthritis, and PE symptoms. This is medical emergency!
110
What are the 3 phases of CML?
Chronic Phase (CP) - 90% of patients are in CP at diagnosis - <10% blasts (healthy/normal people are 1-5%) Accelerated Phase (AP) - 10-19% blasts Blast Crisis (BC) - terminal phase - 20% blasts - Sometimes disease can switch to lymphoid here
111
CML - How do we treat (6 agents)? What drug interactions & adverse effects are we cautious about?
Goal: eradicate leukemic clone with minimal toxicity. The only way to cure is to do an allogenic hematopoietic stem cell transplant (HSCT). - We use tyrosine kinase inhibitors (TKIs) now (pill, now it's treated like a chronic disease) Imatinib - nasuea dasatinib - fluid retention (pleural effusion), avoid OTC acid reducers nilotinib - QTc interval prolonged, metabolic syndrome bosutinib - diarrhea (she uses this last) ponatinib - dose-limiting cardiac toxic side effects, use in resistant pts (T315I mutation causes resistance to 1st and 2nd gen agents) asciminib - used in T315I resistant CML & other refractory pts, binds to different area of transmembrane protein *these are all metabolized by CYP3A4, so we will NEED to dose reduce with antifungals (and paxlovid) If pt doesn't have BCR-Abl mutation, we can only do allogenic transplant.
112
What are our 3 treatment response criteria for CML?
Hematologic Response: CBC. Want return of normal blood counts Cytogenic response: Using FISH test to see how many Ph cells we see. - Complete = 0% - Partial = 1-35% Molecular Response: Use PCR test every 3 months to assess how quick and deep of a response we get from the TKI. - True gold standard is to get less than 0.01% BCR-Abl prevalence - This is what we really care about!
113
What does a patient need to do in order to go on a drug holiday & TKI discontinuation? How do we monitor after d/c?
TKI discontinuation: - No history of AP or BP - On TKI therapy for at least 3 years - Stable, deep molecular response for at least 2 years - BCR-ABL ≤0.01% Monitor: - Quantifiable PCR (monthly for months 1-6, qom months 7-12, q3m after that) - must remain in major molecular response - loss of MMR means they have to restart TKI w/in 4 weeks
114
What is the pathophysiology of CLL (chronic lymphnode leukemia)? How do these patients present? What two mutations are associated with worse outcomes?
Monoclonal B lymphocyte transformation that results in clonal expansion and lymphocyte accumulation (can convert to aggressive lymphoma: Richter's transformation) Incidental finding usually (or recurrent sinus infections that aren't resolved with antibiotics) Del(11q) - associated with extensive lymphadenopathy, disease progression, and shorter survival Del(17p) - associated with the worst outcomes. This reflects the loss of key tumor suppressor TP53 gene. With this, chemos aren't going to work & the cell will keep dividing :(
115
How do we treat CLL? What is the MOA of the agents that we use? How would we treat relapse or refractory disease?
We do NOT treat a number! - Treatment is reserved for Stage III or IV disease, clinical symptoms, and end organ dysfunction First line option for everyone is BTK inhibitors as a single agent or chemoimmunotherapy - acalabrutinib (BTKi) +/- obinutuzumab (CD20) - venetoclax (BCL2i) + obinutuzumab - zanubrutinib (BTKi) *we don't use ibrutinib anymore bc the newer agents don't have as much toxicity and they have better efficacy Treatment for relapse or refractory disease is based on patient factors, we just want to palliate symptoms.
116
How do BTK inhibitors work? How does Venetoclax work and what drug interactions are we looking out for?
BTK inhibitors: acalabrutinib, zanubrutinib - BTK inhibitors inhibit the phosphorylation of the TK pathway, which prevents downstream protein synthesis Venetoclax: - Venetoclax is a BCL-2 inhibitor (BCL-2 is pro-survival), which induces apoptosis - Drug interactions to watch out for: CYP3A4 and Pgp inhibitors/inducers
117
What is transient lymphocytosis and how does it relate to CLL?
With acalabrutinib and zanubrutinib, we can see transient lymphocytosis. This is when the WBC goes up, but it should come down after 4-6 months. Do not d/c treatment in this case. This may occur with BTK inhibitors and idelalisib (PI3K inhibitor).
118
Acute Myeloid Leukemia - What is the pathophysiology and presentation? What do we do to diagnose this?
Pathophysiology depends on what cell line is effected. It results in proliferation in monoclonal population of leukemia cells (myeloid lineage). These cells won't be differentiated and they will out crowd the normal cells. Presentation: - Anemia - Neutropenia (infections) - Thrombocytopenia (bleeding) - Bone pain (from hyperactive marrow) - Gum hypertrophy Diagnose: bone marrow biopsy (need 20% to diagnose)
119
What gene mutations are favorable, intermediate, and unfavorable for AML?
Favorable: t(15;17), NPM1, Double CEBPA - responds better to chemo Intermediate: NPM1 + FLT3-ITD Unfavorable: FLT3-ITD & complex (over 3) deletions - poor overall survival FLT3 is present in 30% of cases. We have midostaurin, gilteritinib, and quizartinib to target this.
120
How do we treat AML?
Goal: induction to induce a remission. Then we do consolidation to prevent relapse. *no cure here* Induction: Intensive: continuous infusion cytarabine (7+3) + anthracycline (either idarubicin or daunorubicin, NOT doxorubicin). - Only 60% of pts can tolerate intensive. Goal is complete remission. Low to Moderate: Venetoclax + hypo-methylating agent (azacitidine) - Goal is complete remission. Low-intensity: hypo-methylating agents; low dose chemo - Will not result in complete remission. Supportive care: blood products, prophylactic anti-infectives, hydroxyurea - Goal is symptomatic management. *for FLT3+, add in midostaurin on top of cytarabine 7+3. these patients will need stem cell transplant For consolidation: Favorable risk - chemo (cytarabine 7+3) If low-to-moderate venetoclax + hypo-methylating agent, continue this for consolidation, as well. Unfavorable risk - allo stem cell transplant (but must be in remission for the transplant)
121
What is Acute Promyelocytic Leukemia (APL)? How do we treat it? What side effect are we looking out for?
These pts have the t(15;17) translocation. - this one is very curable Induction: - give ATRA & arsenic to these patients Differentiation syndrome: all WBCs differentiate to their mature form, which is cause a bunch of inflammation. So we need to keep an eye out for this.
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What is ALL (acute lymphoblastic leukemia) and how do these patients present?
Disease arises form a single leukemic cell (in lymph system) that expands and acquires additional mutations. This results in monoclonal population of leukemic cells (failure to maintain balance between proliferation and differentiation). The leukemic cells have the growth advantage and crowd out the normal cells. These pts present similarly to AML - anemia, neutropenia, thrombocytopenia - lymphadenopathies, splenomegaly, etc. - can go to the brain (confusion, off-balance, etc)
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How do we do risk stratification for ALL?
Low - low WBC (<30k) and less than 35yo Intermediate - WBC ≥30k OR ≥35yo High - WBC ≥30k AND ≥35yo Cytogenic characteristics: Standard: absence of all abnormalities High: unfavorable cytogenetics *BCR-ABL will be present in 25% of patients. BUT if they can tolerate their TKI, their survival is about the same Risk stratification can help look at prognosis, but doesn't decide treatment
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How do we treat ALL?
Induction: goal is remission HyperCVAD: hyper-fractionated cyclophosphamide, vincristine, doxorubicin, and dexamethasone AND THEN Methotrexate & cytarabine If over 65, do blinatumumab - If Ph+, do TKI Consolidation: goal is to eradicate residual disease Maintenance: 2-3 years 6-MP, methotrexate, prednisone, vincristine *if BCR-ACL+, do TKI+vincristine+prednisone *all patients should receive CNS prophylaxis or treatment. Most protocols include intrathecal chemo!!
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What is the definition of engraftment, conditioning regimen, and stem cell mobilization?
Engraftment - hematopoietic stem cell recovery after the transplant Conditioning regimen - chemotherapy or radiation prior to stem cell transplant. The goal is to cause immunosuppression so the host is ready to receive donor cell, create marrow space for stem cell graft, and eliminate as many tumor cells as possible Stem cell mobilization - process of collecting hematopoietic stem cells. We stimulate stem cell production for peripheral blood SC collection (use chemo &/or growth factors)
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What are the two reasons that we do stem cell transplants?
- Allows for administration of very high doses of chemotherapy (decreases myelosuppression since we are supplementing cells) - Graft vs. malignancy effect in allogeneic transplants
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What is the process of autologous and allogenic stem cell transplants?
Autologous: recovery takes ~1 week 1. mobilization of peripheral blood stem cells, store and freeze cells 2. select conditioning regimen 3. proceed with transplant 4. manage complications Allogeneic: recovery takes 2-4 weeks 1. Select a donor 2. Donor source: peripheral blood or bone marrow harvest 3. Select conditioning regimen and GVHD prophylaxis 4. Proceed with transplant 5. Await engraftment, manage pre and post transplant complications For high-risk acute leukemia, going straight to stem cell transplant after first chemo/remission gives them the best chance. For good-risk acute leukemias, we can wait for pt to relapse and go into remission #2.
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What do we do for histocompatibility testing for SCT?
Look at HLA genes on chromosome 6. We want to make sure that Class I and II are matched. - Lower match = higher risk of GVHD
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Where are our sources of donor cells for SCT?
Bone marrow - invasive (requires anesthesia) - most pure (decreased risk of GVHD) - not common Peripheral blood - most common - takes 3 hours Umbilical cord blood - not seen often - small volume - blood collected after childbirth *between bone marrow and peripheral blood, bone marrow has higher chance of 5 year relapse, but the overall survival is the same
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What medications do we use for stem cell mobilization?
Filgrastim (Neupogen) - bone pain is biggest complaint Sargramostim Plerixafor (mozobil) combined with filgrastim - GI/diarrhea biggest complaint need 2-5 million cells in order to infuse into a patient we need to make sure the pts get enough cells
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What dose limiting toxicities are seen when using melphalan or carboplatin for stem cell conditioning?
Melphalan - mucositis Carboplatin - Hepatic and renal
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What responses are we looking for during SCT engraftment? (neutrophils, platelets, lymphocytes, erythrocytes)
neutrophils - ANC over 500 for 3 days (probs takes 10-14 days) platelets - count over 20,000 for 3 days w/o transfusions (begins a few days after neutrophil engraftment) Lymphocyte - may take up to 1 year to recover lymphocyte function in alloSCT Erythrocyte - pt may eventually convert to donor blood type
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What is Graft Versus Host Disease? How do we prevent it? How do we treat acute vs. chronic GVHD?
- Caused by immunocompetent allogeneic donor T-cells reacting against recipient/host antigens. - The donor T cells recognize unmatched histocompatibility antigens. They activate, proliferative, and attack the recipient's tissue. Prevention: Use at least 2 agents with different MOAs - Calcineurin inhibitors: decrease IL-2 function (tacrolimus, cyclosporine) - mTOR inhibitor: decrease IL-2 function (sirolimus) - Antimetabolite: suppress active donor T-cells (methotrexate) Acute: less than 100 days post SCT - Steroids Chronic: more than 100 days post SCT - Steroids
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What is the process of CAR-T therapy?
1. Leukapheresis 2. T-cell activation/transduction 3. modified T-cell expansion 4. chemotherapy 5. modified T cell infusion
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Who is tisagenlecleucel (Kymriah), axicabtagene (Yescarta), brexucabtagene autoleucel (Tacartus), and lisocabtagene maraleucel (Breyanzi) indicated for? (CD19 targets)
tisagenlecleucel (Kymriah) - ALL (children and young adult refractory/relapse), follicular lymphoma (relapsed or refractory), NHL (after 2 or more lines of therapy) axicabtagene (Yescarta) - Follicular lymphoma (relapsed/refractory), NHL (refractory to first line therapy or relapsed w/in 12 months, or after 2 or more lines of therapy) brexucabtagene autoleucel (Tacartus) - ALL (relapsed or refractory B cell precursor ALL) lisocabtagene maraleucel (Breyanzi) - NHL (relapsed or refractory after first line therapy)
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Who is idecabtagene vicleucel (Abecma) and ciltacabtagene autoleucel (Carvykti) indicated for? (BCMA)
idecabtagene vicleucel (Abecma) & ciltacabtagene autoleucel (Carvykti) are both indicated for relapsed or refractory multiple myeloma (MM) after 4 or more lines of therapy.
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What are the two important CAR-T toxicities? How do we treat them?
Cytokine release syndrome - treated by tocilizumab (anti IL-6) & steroids Neurologic toxicity (CAR-T cell related encephalopathy syndrome) - steroids *REMS requirements - must have minimum of 2 doses of tocilizumab readily available per patient