Exam 2 Flashcards
Types of Skin Cancer
- Basal Cell Skin (BCS) cancer
- Squamous cell skin (SCS) cancer
- Melanoma: most metastasis-prone type
Risk factors for skin cancer
- Ultraviolet (UV) light exposure
- Moles
- Fair skin, freckling, light hair
- Familial hx of melanoma
Melanoma diagnosis: ABCDE
- Asymmetry: one side is different from the other
- Border: irregular, notched, blurred
- Color: mixed
- Diameter: larger than 6 mm
- Evolve: mole evolves over time
Melanoma staging: I ~ V
- Confined to the epidermis; “in situ”
- Invasion of the papillary dermis
- Filling of the papillary dermis but not extending to the reticular dermis
- Invasion of the reticular dermis
- Invasion of the deep, SQ tissue
Familial vs Sporadic melanoma
- Familial: germline mutation of CDKN2A, CDK4) encoding for p16INK4A and p14ARF
- Sporadic: random acquired mutations in p16INK4A
Targeted therapy:
- Most common mutation
- Regimens
- Target cancer’s specific protein(s) that contributes to the growth and survival of cells
- Most common BRAF mutation: V600E → vemurafenib, dabrafenib
- Targeted MEK inhibitor → trametinib
- BRAF + MEK = standard of care for melanoma
Immunotherapy: checkpoint targets, (+), (-)
- Immune checkpoints: PD-1/-L1 axis, CTLA-4
- (+): pts own immune system to destroy cancer cells, memory against cancer specific antigens result in more durable response, improve efficacy when used in combination
- (-): autoimmune disease, resistance, heterogenous response
Systemic therapy: Immune Checkpoint Inhibitors (ICIs)
- MoA
- Formulation
- Drug - target
- Block target protein “checkpoints” to turn on an immune response
- IV formulation
- Ipilimumab - CTLA-4
- Pembrolizumab, Nivolumab - PD-1
- Atezolizumab - PD-L1
- Relatlimab - LAG-3
Systemic therapy: BRAF/MEK inhibitor targeted therapy
- Why given together?
- Formulation
- BRAF + MEK drugs
- Prolong time to resistance
- Improve toxicity profile
- Increase overall efficacy
- Oral formulation
- Dabrafenib + Trametinib
- Vemurafenib + Cobimetinib
- Encorafenib + Binimetinib
Treatment by stage (Localized)
- Stage 0 in situ or 1A
- Stage IB or II
- Wide excision
- Wide excision +/- sentinel node biopsy
- Early stage = surgical resection
Adjuvant tx for resected Stage III melanoma
- Stage IIIA (sentinel node +), IIIB/C/D (SN+)
- Adjuvant treatment
- Nodal basin ultrasound surveillance or complete lymph node dissection + systemic therapy or observation based on risk of recurrence
- Nivolumab: Stage IIIB/C
- Pembrolizumab: Stage IIIA w/ sentinel lymph node (SLN) metastasis >1 mm or stage IIIB/C
- Dabrafenib+Trametinib: pts w/ BRAF V600 activating mutations; stage IIIA with SNL mets >1 mm or stage IIIB/C
Treatment by stage: Unresectable
- Stage III (satellite/ in-transit lesions)
Intralesional injections, local ablation, topical imiquimod
What is Talimogene laherparepvec (T-VEC)?
- Indication
- MoA
- Administration
- Dosing (Max dose per visit)
- AEs
- Monitor/Precautions
- Oncolytic virus based on HSV-1
- Unresectable stage III melanoma with in-transit or satellite lesions
- Selectively infects, replicates inside, destroys cancer cells
- Intralesional injection
- Inject from largest to smallest; max = 4 mL
- Chills, fatigue, fever, injection site pain, N, flu-like
- Viral transmission risk
Treatment by stage: Metastatic Melanoma First-line therapy (systemic)
- Combination ICI
- Monotherapy ICI
- BRAF V600-activating mutations
Combination ICI (preferred)
- Nivolumab + ipilimumab/relatlimab
Monotherapy ICI
- Pembrolizumab
- Nivolumab
BRAF V600-activating Mutations
- Dabrafenib + trametinib
- Vemurafenib + Cobimetinib
- Encorafenib + binimetinib
ICI vs BRAF/MEK as 1st line for pts w/ BRAF V600-activating mutations
- Rapidly growing, symptomatic
- Slow growing, asymptomatic
- Start with BRAF/MEK, faster onset
- Start with ICI due to increased overall survival
Risk factors associated with VTE in cancer patients: Patient-/Treatment-/Tumor-related
- Age, comorbidities, immobilization (hospitalization), previous VTE, hereditary thrombophilia
- Chemo, hormonal, RBC transfusions & erythropoiesis-stimulating agents, surgery, radiation, central venous catheters
- Tumor type (VH: gastric pancreas, brain, H: lung, hematologic, gynecologic, renal, bladder), advanced stage, localized tumor compression
Prevention of VTE in Inpatient
Enoxaparin, Dalteparin, Fondaparinux, Heparin
Prevention of VTE in Outpatient (Ambulatory): Criteria, Recommended agents, Duration
- Cancer patients, high-risk (Khorana score 2), receiving/starting chemotherapy
- DOACs: apixaban, rivaroxaban
- LMWH: enoxaparin, dalteparin
- <6 months
Initial treatment of VTE
Enoxaparin, Dalteparin, Rivaroxaban, Apixaban
Maintenance treatment of VTE: agents & duration
- Enoxaparin, Dalteparin, Rivaroxaban, Apixaban, Edoxaban
- Duration >3 months
Risk factors for extravasation: Infusion procedure-/Patient-/Drug-related
- Peripheral > central access
- Small & fragile veins, multiple previous venipunctures, obesity, conditions with an altered or impaired circulation, communication difficulties or young children
- Overall vesicant properties of the drug
Vesicants Chemotherapeutic drugs (ABC MTV)
Anthracyclines, Bendamustine, Cisplatin, Mitoxantrone, Taxanes, Vinca alkaloids
Prevention of extravasation
- Education and training of HCP
- Ensure appropriate vascular access
- Selection of appropriate cannula and needle
- Patient education
- Development of local institutional guideline for prevention and management of extravasation
Management of anthracyclines, alkylating agents: Localize & Neutralize by ___
- Localize by applying cold compresses for 20 mins QID for 1-2 days
- Neutralize by using specific antidotes
Management of vinca alkaloids, taxanes: Disperse & Dilute by ___
- Disperse by applying warm compresses for 20 mins QID for 1-2 days
- Dilute by administering agents that increase absorption of extravasated drugs
Antidote Dexrazoxane: Indication, MoA, Dose, Warning
- Tx of extravasation of anthracyclines, prevent anthracycline-induced cardiomyopathy
- Reversibly inhibit topoisomerase II
- Begin ASAP but within 6 hrs
- Withhold cooling compresses at least 15 mins before and during infusion
Antidote Dimethyl Sulfoxide (DMSO): Indication, MoA, Dose, Warning
- Tx extravasation of anthracyclines, mitoxantrone, cisplatin (alternative)
- Free-radical scavenging properties, can speed up the removal of extravasated drugs from tissues
- Topically, begin within 10 mins, do not cover
Dexrazoxane & DMSO can be used concomitantly: True or False
False; should not be used concomitantly
Antidote Hyaluronidase: Indication, MoA, Dose
- Tx extravasation of vinca alkaloids & taxanes
- Degrade hyaluronic acid in the extracellular matrix, modifying the permeability of the connective tissue, increases the dispersion and absorption of extravasated drugs
- IV if needle/cannula still in place
- SQ in a clockwise manner if removed
Antidote Sodium Thiosulfate: Indication, MoA, Dose
- Tx extravasation of cisplatin, bendamustine
- Create alkaline-rich site, to which alkylating agents have an affinity, thereby neutralize
- Bendamustine: SQ
- Cisplatin IV, SQ
Risk factors of mucositis: Patient vs Treatment specific
- Smoking/tobacco use, poor baseline oral hygiene, younger age, female, pretreatment nutritional status
- Head/neck cancers, combined chemo & radiation, treatment duration, dose of therapy
Grading of oral mucositis: CTCAE Grade 1-5
- Asymptomatic or mild symptoms; indication not indicated
- Moderate pain or ulcer that does not interfere with oral intake; modified diet indicated
- Severe pain; interfering with oral intake
- Life-threatening; urgent intervention indicated
- Death
Grading of oral mucositis: WHO
Grade 0-4
0: None
1: Soreness/ erythema
2: Erythema/ ulcers/ can eat solids
3: Ulcers/ requires liquid diet
4: Alimentation not possible
Mucositis Prevention: basic oral care
- Brush teeth with soft toothbrush at least BID
- Floss teeth at least once daily
- Rinse mouth four times daily with bland mouth rinse (sodium bicarbonate, normal saline, or tap water)
Mucositis Prevention: cryotherapy
- Application of ice or cold substance (popsicles, ice cream) to mouth immediately before, during, and after administration of chemotherapy
- Vasoconstriction of the blood vessels leading to reduced BF, and lower a local [ ] of chemo
- Evidence is limited; melphalan, 5-FU (bolus)
Mucositis Prevention: L-glutamine
- AA associated w/ cell proliferation and survival
- MoA: decrease cell death of mucosal tissue
- Limited data
Mucositis Prevention: Palifermin
- MoA: recombinant keratinocyte GF that directly stimulates proliferation of epithelial cells
- Indication: autologous hematopoietic stem cell transplant where WHO grade 3
- Warnings: administration w/i 24 hrs may increase mucositis, potential for stimulation of tumor growth
- AEs: edema, skin rash
Mucositis Treatment: “Magic” Mouthwash ingredients, MoA, AEs
- Diphenhydramine + aluminum OH + lidocaine +/- nystatin
- Antihistamine: reduces histamine release/inflammation
- Antacid: coats the mouth and increase pH
- Local anesthetic (lidocaine): provide pain relief/numbing
- Nystatin: prevention/tx of oral thrush caused by Candida sp
- AEs: taste disturbances, burning/tingling sensation in mouth
Mucositis Treatment: sucralfate MoA, D/I
- MoA: create coating on the mucosa that can help create a protective barrier
- X decrease mucositis, but decrease bacterial colonization
- D/I: separate meds by 1 hr before or 2 hrs after
Mucositis Types of pain
- Visceral: Nociceptors in thoracic, pelvic, abdominal (internal organs)
- Somatic: Arises from nociceptors in skin/ soft tissue, muscle
- Neuropathic: Direct damage to somatosensory neurons
- Psychological pain: Trauma of past procedures, prognosis, understanding of pain
(M) 5 A’s of pain management
- Analgesia: minimize pain perception
- Activities: optimize QoL and activities of daily living (ADL)
- AEs: minimize both SEs of analgesic & uncontrolled pain
- Aberrant drug taking: use lowest dosages, assess safety of pain management and follow up when dosages are increased/ reduced
- Affect: patients’ mood/ perception of QoL
(M) Opioid therapy: MoA, Use, AEs
- Bind to opioid receptors in CNS, inhibiting ascending pain pathway to alter the perception to pain
- Moderate to severe pain not related to an oncologic emergencies (spinal cord compression)
- Constipation
(M) Opioid Naive patients
- Start & titrate short acting agents Q3-4H PRN
- If multiple doses of SA opioid needed per day, consider addition of long acting opioid
(M) Short-acting opioids
Oxycodone IR, Hydrocodone w/ APAP, Hydromorphone, Morphine IR
(M) Long-acting opioids
Oxycodone ER, Methadone, Fentanyl transdermal patches
(M) Opioid Tolerant patients
- Pts already taking SAO: titrate doses up PRN to achieve analgesia (30-100%)
- If multiple doses of SAO needed per day, consider addition of LAO
(M) Acute Pain Crisis first line tx
Hospitalization or inpatient hospice, PCA
What is Patient-controlled analgesic (PCA)?
- Programmable IV infusion device that allows the pt/caregiver to administer their own pain relief while “capping” the max amount of opioids at safe determined dosages
- Basal: continuous infusion of opioid provided at set dosage to the pt each hr
- Bolus: delivered when button is pressed by pt. Device programmed w/ predetermined max bolus doses allowed per hr (=“lock-out”)
Risk factors of colorectal cancer: Modifiable
Obesity/ high BMI, Low physical activity, Alcohol consumption, Smoking, High consumption of meat and processed foods, Low intake of fruits and vegetables
Risk factors of colorectal cancer: Non-Modifiable
Male, Age >50 yrs, Family hx, Genetic predisposition, Adenomatous polyps, Inflammatory bowel disease (IBD), DM
(CC) Screening recommendations for general populations vs high-risk
General: Colonoscopy every 10 yrs (Start 45 yo)
High-risk: Lynch syndrome, Peutz-Jeghers syndrome
Colonoscopy more frequently
(CC) FOLFOX
- Folinic acid (leucovorin)
- Fluorouracil
- Oxaliplatin
(CC) CapeOX
- Capecitabine
- Oxaliplatin
(CC) FOLFoxIRI
- Folinic acid (leucovorin)
- Fluorouracil
- Oxaliplatin
- Irinotecan
(CC) FOLFIRI
- Folinic acid (leucovorin)
- Fluorouracil
- Irinotecan
(CC) First-line treatment: Stage I Goal, First-line
- Cure
- Surgical excision of primary tumor and removal of regional lymph nodes
- Adjuvant chemo not recommended
(CC) First-line treatment: Stage II (Low Risk) Goal, First-line
- Cure
- Surgery, observation
- Adjuvant chemo can be considered but rarely
(CC) First-line treatment: Stage II (High Risk) Goal, First-line
- Cure
- Surgery → 5-FU or Capecitabine or FOLFOX or CAPEOX
- Adjuvant chemo can be considered if: poorly differentiated histology, lymphovascular invasion, perineural invasion, bowel obstruction, localized perforation, close/indeterminate or positive margins, <12 lymph nodes surgically examined
(CC) First-line treatment: Stage III (Low Risk) Goal, First-line
- Cure
- Surgery → CAPEOX (3 months) or FOLFOX (3-6 months)
- Adjuvant chemo recommended for all patients
(CC) First-line treatment: Stage III (High Risk) Goal, First-line
- Cure
- Surgery → CAPEOX (3-6 months) or FOLFOX (3-6 months)
- Adjuvant chemo recommended for all patients
(CC) First-line treatment: Stage IV Goal, First-line
- Palliative
- (FOLFOX or CAPEOX or FOLFIRI or FOLFOXIRI) +/- bevacizumab
- KRAS/NRAS/BRAF WT and left-sided tumors only: 1) FOLFOX + (cetuximab or panitumumab) 2) FOLFIRI + (cetuximab or panitumumab)
- dMMR/MSI-H only: 1) Nivolumab +/- ipilimumab 2) pembrolizumab
(CC) Fluorouracil (5-FU): formuation, PK, AEs
- Pyrimidine analog (antimetabolite)
- Infusional
- Metabolized to form active metabolites → interfere with DNA/RNA synthesis: F-UMP, F-dUMP
- Very short t ½ → used in combination w/ leucovorin
- Eliminated via dihydropyridine dehydrogenase (DPD)
- AEs: hand-foot syndrome
(CC) Capecitabine: absorption, AE
- Prodrug of 5-FU
- Absorbed in the intestines
- AEs: hand-foot syndrome