Oncology Flashcards
ECOG 0
Fully active, able to carry on all pre disease performance without restriction
ECOG 1
Restricted physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature (light house work, office work)
ECOG 2
Ambulatory and capable of all selfcare but unable to carry out any work activities. Yp and about more than 50% of waking hours
ECOG 3
Capable of only limited self care, confined to bed or chair more than 50% of waking hours
ECOG 4
Completely disabled. Cannot carry on any selfcare. totally confined to bed or chair
ECOG 4
Dead
Best imaging for staging of NSCLC
PET-CT if possible
(finds occult LN/distant mets - and higher sensitivity for mediastinal LN)
-Need to get tissue sample of suspicious LN to confirm mets
CT/MRIB for patients who are for curative intent as well
Incidence of of different NSCLC histo
Adenocarcinoma (approx. 50%),
squamous cell (~20%), adenosquamous
large cell
NSCLC - Immunohistochemistry for adeno and SCC
Adenocarcinoma: TTF-1, mucin, Napsin-A
Squamous: p63, CK 5/6 (CK 7 neg)
NSCLC - Adenocarcinoma molecular characteristics/driver mutations
EGFR mutation,
ALK
ROS1 gene rearrangement
Tx for Stage 1 NSCLC
Essentially. Resect and monitor.
Surgical resection and LN resection for intraoperative staging
VATS preferred
Stereotactic ablative body RTx is alternative for elderly patients or in COPD
Tx of Stage 2 NSCLC
Resect + Adjuvant chemo
- 2 platinum based drugs:
- Cisplatin/Vinorelbine
- or Carboplatin if cisplatin not tolerated
Tx of Stage 3 NSCLC
Resect and adjuvant chemo if N0/N1 (hilar LN)
Chemoradiotherapy if N2+ disease, not resectable, or not a surgical candidate
- 6 weeks RTx and concurrent 2 weeks double platinum chemo
- -Cisplatin/Etoposide (superior)
- -Carboplatin-Paclitaxel (less toxic)
Post chemo maintanence:
-PDL1 antibody: Durvalumab (improved survival) - irrespective of PDL1 expression
Tx Stage 4 NSCLC
Chemo in all stage 4 with EGFR and ALK negative disease and ECOG 0-2
-Improved survival 1.5m and QOL
Leading cause of cancer death in australia
- Lung cancer
- Prostate
- Breast
- Colorectal
- Pancreas
Definition of Stage 1 Lung cancer
Parenchymal lesion < 4 cm with no node invovlement
Definition of Stage 2 Lung cancer
Parenchymal lesion > 4 cm OR smaller lesion with hilar LN
Definition of Stage 3 Lung cancer
Essentially more than hilar nodes and definitely if any contralateral LN involvement
Definition of Stage 4 Lung cancer
Any form of mets
Cisplatin
Platinum based chemo
SE: ototoxicity, Peripheral neuropathy, mephrotoxicity, electrolyte disturbance, myelosuppression, mucositis, partial alopecia
Vinorelbine
Platinum based chemo
SE: peripheral neuropathy, arthralgia, myalgia, myelosuppression, mucositis, partial alopecia
Pancoast tumor and Stage 3 Lung Ca
Chemoradiotherapy prior to resection if it is resectable (below N2)
Durvalumab
Pacific Trial
anti PD-L1
Improved mortality post chemo for NSCLC
Anti PD 1 Ab
Pembrolizumab
Nivolumab
Bind to PD-1 on T cell
Anti PD-L1 Ab
Durvalumab
Atezolizumab
Bind to PD-L1 on Tumor cells
Stage 4 SCC lung cancer
Need to know PDL1 status
-If >50% on staining, then treat with Pembrolizumab (tripling survival to 30m)
-If <50% on staining, then Bevacizumab and chemo (mOS 16m)
Chemo choice:
-Cisplatin or Carboplatin plus paclitaxel
Approach to Stage 4 Adenocarcinoma Lung cancer
First: Mutation status
- EGFR mutation (10-15%)
- ALK translocation
- ROS1 translocation
Then: if negative to all mutations - PDL1 status and treat with Pembro if >50% staining
Clinical phenotype of EGFR mutatnt adenocarcinoma
Asian, light or never smoked, female
Stage 4 adenocarinoma EGFR mutation treatment
First and second gen EGFR TKIs
-Erlotinib, gefitinib, afatinib
SE: Rash, diarrhea, nail changes, hair changes, pulmonary toxicity, LFT derrangement
Mutation in EGFR mutant adenocarinoma that leads to treatment failure
T790M mutation
Tx of EGFR mutant adenocarinoma with T790M mutation
Osimertinib
- 3rd gen TKI resistant to T790M mutation
- Increased mOS and better brain activity
If no T790M mutation
-Chemo/Bev/IT/Clincial trial
NSCLC ALK mutation phenotype
Light/never smoked
younger age
Adenocarinoma with acinar or signet ring histo
Need FISH testing for confirming
Stage 4 adenocarinoma ALK Translocation treatment
1st Line: Alectinib
SE: myalgia, constipation, oedema, photosensitivity, bradycardia
2nd line: Crizotinib
SE: vision disorders, N+D, oedema
Stage 4 adenocarinoma ROS1 Translocation treatment
Crizotinib
KRAS mutatons in NSCLC
20-25%
Commonly detected
Not targetable yet
Treat as per wild type tumors
Tx of Stage 4 Adenocarcinoma without driver mutation
PDL1 >50%
-Pembro
PDL1 <50%
Bevacizumab +chemo (cisplatin/carboplatin +pemetrexed or paclitaxel)
Definition Limited Stage SCLC
Ipsilateral hemithorax and regional nodes
Definition Extensive Stage SCLC
Disease on contralateral nodes/distant mets
Tx limited stage SCLC
Chemoradiotherapy (platinum/etopiside)
+Prophylactic cranial irradiation (improves survival)
Tx Extensive stage SCLC
Chemoradiotherapy (platinum/etopiside)
+Atezolizumab (improves 2 month survival)
+Thoracic radiation if residual disease (improves survival)
+Prophylactic cranial irradiation in select patient (contraversial)
Paraneoplastic Syndromes associated with which cancer: Hypercalcemia
Squamous cell cancer
-PTHrP release by tumor
Paraneoplastic Syndromes associated with which cancer: SIADH and Neurologic syndromes
Small Cell Lung cancer
Neuro: Lambert eaton syn, cerenellar ataxia, sensory neuroapathies
Risk factors for breast cancer
- Early menarche/late menopause
- Nulliparity/increased age first pregnancy
- Proliferative type benign breast disease
- Family/PHx
- Genetic mutations
- HRT
- Weight (increased postM, low preM
- Ionising radiation
Breast feeding and physical activity is protective
Most common type of breast cancer
Invasive carcinoma NST (80%)
Invasive lobular carcinoma (Breast cancer) features
More likely to be bilateral or multicentric
Lower grade and ER+
Unusual mets (GI, peritoneum, meninges)
Bad subtype of Breast cancer
Micropapillary
Breast Cancer: Stage 1
Small and node negative
Breast Cancer: Stage 2
Large and/or <4LN
Breast Cancer: Stage 3
Infamm or chest wall and/or >4LN
Breast Cancer: Stage 4
Metastatic
Inflammatory breast cancer features
Diffuse erythema/oedema (peau d’orange) of >1/3 of breast skin, lymphoedema caused by tumor emboli in dermal lymphatics
Surgery for early breast cancer (Stage 1-3)
Primary Cancer
- Wide local excision
- Mastectomy if multicentric, high tumor:breast ratio, risk reduction, or CI to RTx
Nodes
- Clinically node negative - sentinal LN Bx
- Clinically node positive then Axillary clearance
Radiation for early breast cancer (Stage 1-3)
Reduction in local recurrence and breast cancer deaths
Would do after mastectomy if node positive, large tumor >5 cm, or multiple high risk features
Strongest prognostic factor in Breast cancer
LN involvement
Definition of Neoadjuvant chemotherapy and role in breast cancer
Chemo before surgery
- Can decrease size and make cancer resectable
- Can aid in assessing if patient gets complete pathological response, if not can change treatment used in adjuvant setting
Role for Bisphosphonates in Breast Cancer Mx
Zolindronic and pomindronate adn denosumab
-Improve survival in post menopausal or OFS population if given for 3 years
Mx ER positive EARLY Breast Ca and prognosis
Low Risk: Endocrine therapy
- PreM: Tamoxifen OR OFS+AI if high risk
- PostM: AI, but can trial tamoxifen (inferior)
High Risk: Chemo (taxane and anthracycline) then Endocrine therapy
Good prognosis, but late recurrence > 5 yrs can occur
Mx HER positive EARLY Breast Ca and prognosis
Trastuzumab 52 weeks + Chemo (anthracycline +Taxane)
-If High risk: Consider adding other HER2 agents (pertuzumab, neratinib)
Good prognosis due to treatment
Mx Triple negative EARLY Breast Ca and prognosis
Chemotherapy
-Anthracycline +Taxane
Poorest prognosis, but late recurrences >5 years are uncommon
Endocrine Therapy in Breast Cancer (Premenopausal)
Ovarian function suppression + aromatase inhibitor is best for 5 years
Can use tamoxifen alone for 10 years, but inferior
Endocrine Therapy in Breast Cancer
Post menopausal
Aromatase inhibitors are best
Tamoxifen is an option if CI or intolerant
Tamoxifen MOA
Selective estrogen receptor modulator
- Anti-estrogenic: Breast
- Pro-estrogenic: Bones (partial), uterus
Tamoxifen SE
Hot flushes VTE (2-3x) Uterine cancer Cataracts NAFLD
Mx of hot flushes on Tamoxifen
stay cool, avoid cheese, wine, and chocolate
Gabapentin
Venlafaxine
MOA Aromatase inhibitors and Names
Inhibit peripheral conversion of androgen to estrogen
-Not suitable in PreM unless OFS
Anastrozole, letrozole
Aromatase inhibitor side effects
Hot flushes
Accelerated BMD loss
AIMSS: joint pain and stiffness (hands mainly)
Vaginal dryness
More CVD, high chol, DM compared to
Tamoxifen
If used in premenopausal women without OFS can cause increase in estrogen levels
Chemotherapy classes used in breast cancer
Anthracyclines (epirubicin/doxorubicin)
Taxanes (Paclitaxel/docetaxel)
Anthracyclines SE
Cardiotoxicity - irreversible ORange urine Alopecia myelosuppression mucositis N+V Fatigue Amenorrhea (risk increases with age) Risk of secondary leukemia
Taxanes SE:
Peripheral neuropathy Fluid retention Infusion reaction nail changes Alopecia myelosuppression mucositis N+V +D Fatigue Amenorrhea (risk related to age)
Trastuzumab MOA
Monoclonal Ab that binds to Her2
Inhibits proliferation and survival
Trastuzumab SE
Cardiac Dysfunction (10% drop LVEF) -Reversible myocyte stunning
RF: Age >60, Chest RTx, Anthracycline use, high dose cyclophosphamide, HTN, known CAD
Tx of ER positive metastatic breast ca
Endocrine therapy is FIRST line
-unless highly symptomatic and high volume visceral disease
PreM:
- OFS w/ GnRH analogue +AI +CDK 4/6 inhibitor
- OR Tamoxifen alone
PostM: AI + CDK 4/6
+Chemo - single agent first
PI3-kinase inhibitor (causes proliferation -oncogenes)
CDK 4/6 inhibitor
Ribociclib, palbociclib, abemaciclib
Inhibit progress of of cell from G to S phase
Improve overall survival in Breast Ca
SE: reversible neutropenia, LFT derrangement, QT prolongation
Tx of HER2 postive metastatic Breast Cancer
Trastuzumab/pertuzumab/taxane chemo
Second line:
- T-DM1 (drug antibody conjugate -trastuzumab and emtansine)
- SE: thrombocytopenia, liver toxicity
Tx of triple negative metastatic breast cancer
Atezolizumab + Taxane
- PARP inhibitors after chemo if BRCA mutant
- Carboplatin if BRCA mutant
Role for Bone modifying agents in metastatic Breast cancer
First line: Denosumab
- Decrease time to first/prevalence of skeletal related events
- -Fracture, need for surgery/RTx, spinal cord compression, hypercalcemia
-Improve bone pain
DO NOT IMPROVE SURVIVAL
BRCA1/2 phenotype
younger age of cancer
Triple negative subtype with BRCA 1
Who to do BRCA testing in
- Relative who is positive
- High grade ovarian cancer
- Triple neg Breast Ca and age <50
- Male with breast ca
- 2 primary Breast ca and one <50yo
- Breast Ca and age <40
- 2 first/second degree relatives +breast ca <50, jewish, male breast ca
BRCA gene positive: Ovarian screening
Nil screening program
BSO by age 45 to exclude occult malignancy
BRCA gene positive:
Breast Screening
Prophylactic bilateral mastectomy by 40
30-40 yo: annual MRI +/- US
40-50 yo: annual MRI +/- MMG +/- US
>50 yo annual MMG+/- US
WHO Criteria for screening test
- Important health problem
- Recognisable latent or early symptomatic stage
- Natural Hx understood
- Tx available for disease
- Test/examination has high accuracy
- Cost effective
Lead time bias
LEngth of time by which diagnosis advanced by screening
-Will length time between diagnosis and death independent of intervention
Length time bias
More indolent tumors have a longer latent period
- More likely to be screen detected
- Artificial advantage to screen detected cases
Breast Cancer Screening Program
Low risk
Women 50-74 yo have MMG every 2 years
Breast Cancer Screening Program
Mod risk
One 1st degree relative diagnosed <50 yo OR two 2nd degree <50 yo
-Start at age 40, consider annual MMG
Two 2nd degree relatives >50 yo
-Annual MMG
Breast Cancer Screening Program
High risk
Two first degree or second degree relatives with breast or ovarian cancer plus
- other relatives
- Breast Ca <50yo
- Relative with >1 BC or ovarian cancer
- Jewish
- Male breast ca
Refer to familial cancer clinic
Cervical Cancer Screening
Age 25-74
Every 5 years
- No HPV - Repeat in 5 years
- HPV non 16/18 detected, no abnormal cells - Repeat in one year
- HP non 16/18 and abnormal cells OR HPB 16/18 detected - Refer for colposcopy
- Unsatisfactory sample: retest 6-12 weeks
Bowel Cancer screening General population (5-10% risk)
iFOBT every 2 years from 50-74 yo
Generally:
-Start at 50yo or 10 yr prior to FDR diagnosis
Bowel Cancer Screening
(Mod Risk) 15-30% risk
- One FDR <55 yo
- Two FDR at any age
- One FDR and >one SDR at any age
iFOBT every 2 years from 40-49 AND Colonoscopy every 5 years from 50-75 yo
Bowel Cancer Screening
(High Risk) 30-40% risk
- Three FDR at any age
- Three FDR or SDR, one diagnosed <55 yo
iFOBT every 2 years from 35-44yo AND Colonscopy every 5 years 45-74 yo
Types of ovarian cancer
- High grade serous (most common - from distal fallopian tube)
- mucinous invasive (GI source)
- Endometroid (endometrial source)
- Clear cell ( endometrial source)
Reccomendation for testing for women <70 with high grade non-mucinous epithelial ovarian, fallopian tube, or primary peritoneal cancer
REferral for BRCA1/2 testing
Which BRCA gene is associated with better ovarian outcomes
BRCA2
What stage does ovarian cancer present at
Stage 3 and 4
-Due to non specific symptoms of early stages
Tx of Ovarian cancer
Debulking surgery + Adjuvant chemo
+Bevacizumab (stage 3 and 4)
+PARPi if BRCA +ve (maintainence)
(Neoadjuvant can be done if +++Symptoms)
-Carboplatin + Paclitaxel
(15-16 mo PFS)
Recurrence rate post initial Tx for ovarian cancer and outcome
80%
- Platinum sensitive (present >6 mo post chemo) Have 2nd remission post chemo before possible recurrence and progression
- Platinum resistant (present <6 mo post chemo) - Progress :(
Role for intraperitoneal chemo in Ovarian Ca
Contraversial, but first line option
-MAny patients cease early due to toxicity and worse QOL
Synthetic lethality
Refers to the ability of PARP inhibitors to selectively kill tumor cells that have BRCA mutations because they are unable to repair DNA damage
PARP inhibitors
Olaparib
Niraparib
Rucaparib
Used in BRCA positive metastatic breast cancer
Role for CA-125 in monitoring for recurrence of ovarian Ca
not recommended
Most common gynecological malignancy
Endometrial cancer
- Due to increasing rates of obesity and metabolic syndrome
- Median age of diagnosis 63
Risk factors for endometrial cancer
- Unopposed estrogen
- Obesity
- PCOS
- Tamoxifen use
- Nulliparity
- Age
- Lynch Syndrome
OCP is protective
Type 1 endometrial cancer
Most common (80%)
- Adenocarcinomas
- estrogen dependent
- Good prognosis
Type 2 endometrial cancer
- High grade endometriod, serous, or clear cell
- Estrogen independent
- Poor prognosis
Tx of endometrial cancer
Surgery is main stay
-Total hysterectomy and BSO +/- LN sampling
Low risk: Monitor post
Intermediate: +RTx
High: RTx +/- chemo Carboplatin+Paclitaxel)
Consider Hormone therapy if ER/PR Positive
Evidence for PDL1 inhibitors if mismatch repair genes present (MSI high)
Early Cervical Cancer Treatment
Surgical for small lesions
+/- adjuvant chemoradiation if high risk features (Cisplatin)
Advanced Cervical Cancer tx
Incurable, survival year
- Bevacizumab + Carboplatin +Paclitaxel
- Consider palliative RTx
Method of inheritance of cancer predisposition genes
AD with incomplete penetrance
BRCA Gene function
part of a complex that repairs double strand breaks in DNA via the homologous recombination pathway and maintains genomic stability (Tumor suppressor genes)
BRCA 1 Breast cancer pathology
- Medullary carcinoma more common
- Grade: High mitotic count, pleomorphic, high tubule
- Triple negative usually
- Ovarian: High grade serous adenocarcinomas
BRCA2 Breast cancer pathology
- Grade: lack tubules and lower mitotic counts
- ER/PR not significantly different in proportion to general population
RANK L in BRCA breast cancer
May be a role for denosumab in the future to inhibit RANKL
Spontaneous CRC vs Lynch - most common gene affected
MLH1 methylation
BRAF V600E mutation
Seen in Sporadic CRC not Lynch
Pembrolizumab in MMR deficient CRC
Shown to improve outcomes in CRC that is MMR deficient - not on PBS
Lynch Syndrome Genetic inheritance
AD, heterozygous germline mutation in MMR genes
-MLH1, MSH2, MSH6, PMS2, EPCAM (silences MSH2)
Loss of what genes more so associated with Lynch
MSH2 and MSH6
Loss of what genes more so associated with sporadic CRC
Loss of MLH1 and BRAF positive
If MSI not high and BRAF positive - very very aggressive cancer
Cell cycle: Transition between stages is regulated by what?
CDK - Cell Dependent Kinases
Alkylating Agents: Subclasses and names
Mustards:
-Cyclosporin, cyclophosphamide, chlorambucil, Dacarbazine, Temozolomide, Lomustine, Streptozotocin
Platinums:
-Cisplatin, Carboplatin, Oxaliplatin
Alkylating Agents MOA
Cell cycle non specific
“Alkylates” guanine, distorts DNA structure, repair enzymes fail
Prevents helicase from seperating dsDNA and prevents replication
Antimetabolites: Subclasses and names
Purine antagonists (A,G)
- Fludarabine, 6-mercaptopurine, 6-thioguanine
- MTX
Pyramidine antagonist (T,C)
- Fluoropyrimidines (5-FU, capecitabine, S-1, TAS-102)
- Gemcitabine
Antimetabolites MOA
Work by interfering with T G C A
Interfere with DNA and RNA production
Role for DPD in 5-FU metabolism
it breaks down 5-FU, so if deficienct will get toxicity
Capecitabine is a prodrug of 5-FU (longer half life)
Ankaloids: Vinca - Names and MOA
-Vincristine, vinblastine, vinorelbine
Bind to tubulin, stop microtubulin formation
Ankaloids: Taxanes - Names and MOA
Paclitaxel, Docetaxel
- Binds to tubulins
- Stops microtubule disassembly
Ankaloids: Camptothecins - Names and MOA
Irinotecan, topotecan, etoposide
-Topoisomerase inhibiters - Cause DNA tensioning during S phase, so cannot replicate (S phase specific)
Anthracyclins - Names and MOA
Doxorubicin, Daunoribicin, Epirubicin, Mitoxantrone
- From strepmyces bacteria (antibiotic)
- Non cell cycle specific, interfere with Topoisomerase 2, metabolite is a free radical causing widespread damage
- Induces histone eviction from chromatin
LHRH analogues
Lucrin, Zoladex (Goserelin)
-omab
mouse
-uximab
chimeric
-uzumab
humanised
-umumab
fully human
CRC CIMP Phenotype
Right sided CRC
Older patients
Arise in “Serrated” adenoma
FAP inheritance and phenotype
AD, 90% penetrance
Virtually all develop CRC by 40
APC gene as germ line mutation (tumor suppressor)
-25% have on FHx
- Associated Ca
- -papillary thyroid, ileal carcinoid, gastric cancer
Amsterdam criteria
For HNPCC
- 3 cases
- 2 generations
- 1 <50 yo - either CRC or related cancer
CRC number of adequate LN needed during resection
> 12
Lynch Syndrome associated cancers
Endometrial ca Ovarian Gastric/SB/ hepatic Brain Renal
Lynch Syndrome screening
At risk family members:
Annual or 2 yearly Cscope from age 25 or 5 years prior to earliest age of cancer Dx in family
FAP screening
Start yearly flexi sig/Cscope age 10-12
Likely will need colectomy in teens or early 20s
MUTYH associated polyposis
AR
Biallelic mutation in MUTYH gene
Polyposis by age 50-60
CRC risk 70-75%
Aspirin and CRC
Shown to have reduced the incidence of CRC
- Delayed benefit after 5 years
- Thought to be via COX 2 inhibition which is expressed in CRC
Tx of Stage 1 CRC
T1/T2 N0
Surgery alone
Tx of Stage 2 CRC
T3/T4 N0
Surgery \+Adjuvant chemo if high risk features: (5-FU or Capecitabine) -T4 tumor Perforation/obstruction -Lymphovascular invasion -Poorly differentiated -Inadequate LN samples -High pre op CEA? -MSI normal (stable)
Tx of Stage 3 CRC
any T and N1/N2
Surgery + Adjuvant chemo
- 6 months FOLFOX (Folic acid, 5-FU, Oxaliplatin)
- IF low risk (N1) can do 3 months CAPOX (Capecitabine, Oxaliplatin)
Tx of locally advanced rectal cancer
MRI for staging
Neoadjuvant chemoradiation
(5FU or Capcitabine)
Post op adjuvant chemotherapy dependent on histo and response to neoadjuvant and if node positive
Tx of low rectal cancer <6 cm from anal verge
Not able to be resected
Neoadjuvant chemoradiation
Surveillance after early stage colon cancer
First 2 years:
-3 monthly CEA + 6 monthly CT CAP
Year 3-5:
-6 monthly CEA and annual CT
Colonoscopy at anniversary and then second yearly
Tx of metastatic CRC
-Group 1: Resectable mets
Aim to cure.
- Surgery and adjuvant chemo
- Can do neoadjuvant chemo if borderline resectable
Tx of metastatic CRC
-Group 2: Unresectable and high tumor burden
Not curable
Chemo +/- targeted therapy
- FOLFOX or FOLFIRI (Folinic acid, 5-FU, Irinotecan)
- Trifluridine/Tipiracil (Lonsurf) - new alt to 5-FU - last line therapy (refractory CRC)
-Targeted:
–Bevacizumab (VEGF) (right side)
If KRAS wild type:
–Cetuximab (left sided CRC) or Panitumumab
(EGFR)
-If MSI High - Role for PDL1 inhibitor, but not on PBS
Sister Mary Joseph Nodule
Gastric mets to umbilical area
Virchow’s node
Gastric met to left supraclavicular LN
Mx of Gastric CAncer Stage 1-3
Stage 1 - resect
Stage 2/3 Neoadjuvant chemo, resection, and follow up chemo
Consdier radical gastrectomy up to stage 3
FLOT4
(Docetaxel, 5-FU, Leucovorin, oxaliplatin)
Mx of stage 4 gastric cancer
Platinum based chemo
(Docetaxel/cisplatin/5FU)
+Irinotecan
PD1 therapy in dMMR/MSI high (Pembro)
If HER2 positive, can also add trastuzumab
GIST Diagnosis
“mesenchymal” tumor
-connective tissue/smooth muccle tissue
C-kit positive
CD117
Spindle shaped cells
Rx: Imatinib
Role for pre-operative portal vein embolisation in Cholangiocarcinoma
to increase the limits of safe hepatic resection (induces lobar hypertrophy)
Tx of Cholangiocarcinoma
Surgery is only cure.
Adjuvant chemo:
-Capecitabine
Palliative Chemo:
-Gemcitabine/Cisplatin
Tx of Pancreatic cancer
Surgery +Adjuvant chemo
mFOLFIRINOX
5FU, oxaliplatin, leucovorin, irinotecan
Definition of castration resistant prostate cancer
Prostate cancer growth despite castrate levels of testosterone (<1.7 nmol/L)
Mx of metastatic castration sensitive prostate cancer
ADT (androgen deprivation therapy) +Docetaxel if high volume cancer
- GnRH agonists (goserelin, leuprolide)
- GNRH antagonist (degarelix) - avoids flare response
What is the flare response associated with ADT in prostate cancer
Initial surg of testosterone when GnRH agonist is given that may worsen cancer and symptoms
Mx of castration resistant prostate cancer
Chemo
-Docetaxel or Cabazitaxel
Androgen receptor targeted therapy
- Abiratone (inhibts 17 alpha hydroxylase and given with pred 10 mg daily)
- Enzalutamide (CI in seizures)
Role for PARP inhibitors too if DNA repair abnormalities
Docetaxel SE
sensory/motor PN, cytopenias (neutropenic sepsis), hypersensitivity reactions
Cabazitaxel SE
diarrhoea, cytopenias, sensory/motor PN (less common than D), less alopecia
Fleischner Criteria
Single:
<6mm: low risk - no f/u
<6 mm high risk- CT 1yr
6-8mm: low or high risk - CT 6-12 mo
> 8 mm: low or high risk - CT/PET/tissue in 3 mo
Multiple:
<6mm - low: no f/u
<6mm - high: CT 1 yr
6-8mm or >8 mm and low or high risk: CT 306 mo
Ki-67
marker of cell proliferation
Which tumor marker goes up with smoking
CEA
Which cancer is obesity a greatest risk factor in
endometrial
Abitaterone MOA and SE
17 alpha hydroxylase inhibitor
SE:
-HTN, Hypokalemia, peripheral oedema, tranaminitis
Give with pred to reduce SE
PSMA (prostate specific mebrane antigen)
Overexpressed in prostate cancer.
Possible use in future targeted disease treatment
Most common renal cell cancer
Clear cell
Role of VHL protein in Renal cell cancer
VHL keeps HIF in check
HIF promotes angiogenesis, cell proliferation
VHL mutation leads to excessive HIF with promites carcinogenesis
Poor prognostic signs in Renal cell cancer
High ECOG
Hypercalcemia
Low Hb
High LDH and Plt
Mx of renal cell cancer
1st: TKI
- Sunitinib or Pazopanib
2nd: Nivolumab, Sorafenib, atixinib
3rd: Everolimus
Most common bladder cancer in developed countries
Transitional cell carcinoma (urothelial)
Treatment of muscle invasive bladder cancer
Neoadjuvant chemo improved survival
(Cisplatin+gemcitabine)
Radical cystectomy preferred, but alternative is chemoradiation
2nd line: PD1/PDL1 - not PBS approved
Differentiating seminoma vs non seminoma testicular cancer
AFP NOT produced by pure seminoma
BHCG and LDH can be produced by both
Mx of seminoma testicular cancer
Carboplatin only
Risk of recurrence if tumor >4 cm or rete testis invasion
Mx of non-seminoma testicular cancer
BEP
Bleomycin, etopiside, cisplatin
Prognostication factors of melanoma
- Tumor thickness
- Mitotic rate
Ulceration, older age, male, LN involvement, location
LDH
Mx of stage 1 melanoma
resect and consider sentinal LN Bx if >1mm or high risk features
Mx of stage 2 melanoma
Resect + Sentinal LNBx +Adjuvant RTx +/- systemic Tx
Mx of stage 3 melanoma
LN involvement
Resect + Nodal dissection + Adjuvant RTx +/- systemic Tx
Mx of stage 4 melanoma
BRAF mutation:
- 1st line: BRAF +MEK inhibitor
- 2nd line: Ipilimumab +Nivolumab
No BRAF mutation:
-1st Line: Ipilimumab +Nivolumab
BRAF Mutations in Melanoma
More common in little chronic skin exposure, younger patients
80% BRAF V600E
5-30% BRAF V600K
BRAF inhibitors names, MOA, and SE
Vemurafenib, Dabrafenib
Attach to mutant BRAF V600. BRAF results in downstream activation of MEK and ERK with leads to uncontrolled cell proliferation. This is ceased.
SE: fevers, tachycardia, diarrhea, rash and pruritis, SCCs
Complication with only BRAF inhibitor use in melanoma
Cx: 80% pts develop resistance via the MAPK reactivation through MEK (prevented by combo MEK and BRAF inhibitor)
MEK inhibitors
Cobimetinib, Trametinib
MOA: Inhibition of downstream MAPK pathway
Decreases side effects from BRAF inhibitors alone
SE: photosenitivity
Which drug is most associated with pseudoprogression
CTLA 4 inhibitor
Ipilimumab
When is the peak time of immunotoxicity with immunotherapy and which drugs are most likely the cculprit
first 3 months, but can occur anytime
Ipi/Nivo>Ipi>Nivo
Mx of Brain mets in Breast cancer
Resection if possible or stereotactic RTx
-Stereotactic done if <5 mets, otherwise have to do whole brain RTx
At what size of mass are PET scans not helpful
<1 cm
If cold on PET scan, then still cannot rule out cancer
Common immune related AEs
AI colitis AI dermatitis AI hepatitis AI hypophysitis -p/w fatigue, headache, nausea -Adrenal insufficiency, hypo/hyperthyroidism, or hypogonadism Pneumonitis -Non productive cough and dyspnea
Generally:
-Rash first, then diarrhea, then liver and hypohysitis later
Mx of IRAEs
Grade 1: Mild
-Symptomatic (loperimide for colitis, topical steroid for rash)
Grade 2: Mod
-PO steroid
Grade 3: Hospital
-IV Steroids
Grade 4: Severe
-IV steroid + other immunosuppressant
Breast cancer Brain met - receptor status?
HER2 +ve
Breast cancer Bone and LN mets - receptor status?
ER/PR positive
PSMA scan
PET scan with prostate specific membrane antigen enabling better detection of mets
Highly sensitive and specific
Prostate cancer: Role for denosumab and zolendronic acid
REduce skeletal related events in castrate resistant bony mets