Oncology II Flashcards
Whats Dubois and Dubois formula used for? What is the formula?
body surface area
BSA (m^2) = 0.007184 x Height (cm)^0.725 x Weight (kg)^0.425
Whats Mosteller formula used for? What is the formula?
body surface area
BSA = | (Ht -cm x Wt -kg)/ 3600
List phases of cell cycle
M - mitosis - cell divides into 2 daughters
Go - Resting phase post mitosis - no cell division occurs
G1 - Post-mitotic phase - where enzymes & proteins are synthesized
S - DNA synthesis and duplication occurs
G2 - Pre-mitotic phase - RNA and Topoisomerase I and II are produced to prepare for cell division
M phase drugs
Vinca alkaloids
Taxanes
G0 phase drugs
None! No drugs work here
G1 phase drugs
Post-mitotic phase - where enzymes and proteins are synthesized (Cell growth and preparation for DNA replication)
None!
S phase drugs
Topoisomerase I inhibitors
Antimetabolites
- Pyrimidine-analog antimetabolites
- Folate antimetabolites
What’s G2-phase of the cell cycle?
Pre-mitotic phase - RNA and Topoisomerase I and II are produced to prepared for cell division
G2 phase drugs
Topoisomerase II inhibitors
List non-cell cycle specific agents
Alkylating agents
Anthracyclines
Platinum agents
MOA of Alkylators?
Non-cell cycle specific: Cross-links DNA, preventing cell replication
List the main Alkylators?
Cyclophosphamide (Cytoxan)
Ifofsamide (Ifex)
Brand name of Cyclophosphamide? Alkylator (non-cell cycle specific)
Cytoxan
Brand name of Ifosfamide? Alkylator (non-cell cycle specific)
Ifex
Whats concern with High-dose Cyclophosphamide (Cytoxan) and all doses of Ifosfamide (Ifex)? What’s done to mitigate concern?
Hemorrhagic cystitis
Give MESNA (Mesnex) + High-dose Cyclophosphamide (Cytoxan)
MESNA (Mesnex) + ALL doses of Ifosfamide (Ifex)
Which Alkylators is also an MAO-I?
Procarbazine (avoid interacting drugs/food)
Which Alkylators is used with non-PVC bag and tubing due to leaching of DEHP?
Carmustine
Key BBW of Alkylators?
Hemorrhagic cystitis (Ifosfamide, cyclophosphamide)
Main SE of Busulfan, Carmustine, Lomustine (Alkyaltors)?
Pulmonary toxicity
MOA of Anthracyclines?
Non-cell specific: works by various MOA, including intercalation into DNA
List Anthracyclines agents
Doxorubicin (Adriamycin)
Idarubicin (Idamycin)
Daunorubicin (Cerubidine)
Mitoxantrone (Novantrone)
Brand name of Doxorubicin? Anthracyclines
Adriamycin
Brand name of Doxorubicin Liposomal? Anthracyclines
Doxil
Brand name of Idarubicin? Anthracyclines
Idamycin
Brand name of Daunorubicin? Anthracyclines
Cerubidine
Brand name of Mitoxantrone? Anthracyclines
Novantrone
What limits use of Anthracyclines?
Very effective but use limited by cardiac toxicity and N/V
Anthracyclines are vesicants… What’s used as an antidote for them?
Dexrazoxane (Totect)
Or
Dimethyl Sulfoxide
How do u mitigate Cardiotoxicity caused by Anthracyclines?
There’s max lifetime doses for most of them
What’s the max lifetime dose of Doxorubicin (Adriamycin)?
Doxorubicin = 450-550 mg/m^2
What’s the cardioprotective agent used with Doxorubicin?
Dexrazoxane (Zinecard)
When should u consider adding Dexrazoxane (Zinecard) to Doxorubicin?
When cumulative doxorubicin doses > 300 mg/m^2
What color do anthracyclines turn body fluids into? Exception?
Red
Mitoxantrone (Novantrone) turns urine BLUE
BBW of Anthracyclines (doxorubicin, idarubicin, daunorubicin, mitoxantrone)?
Myocardial toxicity
Vesicant
Myelosuppresion
SEs of Anthracyclines (doxorubicin, idarubicin, daunorubicin, mitoxantrone)?
Hand-foot syndrome
Alopecia
Extravasation
Red urine and body secretions (blue with mitoxantrone)
MOA of platinum-based compounds?
Non-cell cycle specific: cross-links DNA, leading to apoptosis
Agents under Platinum-based compounds?
Cisplatin (Platinol)
Carboplatin (Paraplatin-AQ)
Oxaliplatin (Eloxatin)
Brand name of Cisplatin? Platinum-based compounds
Platinol
Brand name of Carboplatin? Platinum-based compounds
Paraplatin-AQ
Brand name of Oxaliplatin? Platinum-based compounds
Eloxatin
Unique concerns of Cisplatin (Platinol) - Platinum-based compounds?
Nephrotoxicity (vigorous hydration & sometimes, mannitol)
Ototoxicity (audio grams recommended b4 each prior)
Highly emetogenic (use high-risk antiemetic regimen)
What may be used prophylactically for renal protection when using Cisplatin (Platinol)?
Amifostine (Ethyol)
Unique concerns wrt Oxaliplatin (Eloxatin)? Platinum-based Compds
Acute sensory neuropathy exacerbation by exposure to cold
BBW associated with Platinum-based Compds?
Anaphylactic-like reactions - risk increased with repeated exposure
Renal toxicity
Ototoxicity
SEs associated with Platinum-based Compds?
Peripheral neuropathy
Moa of Folate Antimetabolites?
Cell cycle specific, S-phase: prevent DNA synthesis
Agents under Folate Antimetabolites?
Methotrexate (Trexail, Rheumatrex)
Pemetrexed (Alimta)
Pralatrexate (Folotyn) - less important
What’s req with high-doses of MTX?
Leucovorin or Levoleucovorin (Fusilev)
What meds should be avoided with MTX? Why?
Most important: Aspirin and NSAIDs
Also: beta-lactams, and probenecid
All decrease renal clearance of MTX
What can be done to reduce nephrotoxicity of MTX?
Hydration and IV bicarbonate
What supplements should be used with Pemetrexed (Alimta)?
folic acid supplements (1mg PO daily)
Vit. B12 (cyanocobalamin)
dexamethasone
Consideration regarding intrathecal MTX admin?
Only preservative free formulations
SEs of MTX (Trexail, Rheumatrex)?
Most important: Nephrotoxicity (dose related) and Hepatotoxicity (more common w/ chronic use)
Mucositis
Pulmonary toxicity
Red-tender palms and feet (hand-foot syndrome)
Myelosuppression
MOA of Pyrimidine Analog Antimetabolites?
Cell cycle specific, S-phase: inihibits Pyrimidine synthesis
Agents under Pyrimidine Analog Antimetabolites?
Capecitabine (Xeloda)
Cytarabine (Ara-C, Cytosar)
Fluorouracil (5-FU, Adrucil)
Gemcitabine (Gemzar)
Brand name of Capecitabine? Pyrimidine Analog Antimetabolites
Xeloda
How should Capecitabine (Xeloda) be used?
PO — take with meal
What testing should done with Capecitabine (Xeloda) use?
Pharmacogenomics testing for Dihydropyrimidine dehydrogenase (DPD)
Deficiency increases risk of sever toxicity
Capecitabine (Xeloda) and INR?
Increases INR up to 91% due to 2C9 inhibition
CI to Capecitabine (Xeloda) use?
Dihydropyrimidine dehydrogenase (DPD) deficiency
SEs of Capecitabine (Xeloda)?
Hand-foot syndrome (more than 5-FU)
Diarrhea
Mucositis
Gastritis
Unique concerns wrt Cytarabine (Ara-C, Cytosar)?
Ara-C syndrome eg fever, gen weakness, fatigue, skin rash, reddened eyes, bone, muscle, joint and/or chest pain
Responds to Coticosteroids
Brand name of Fluorouracil (Pyrimidine Analog Antimetabolites)?
5-FU
What’s Fluorouracil given with? Why?
5-FU is given with Leucovorin
To increase efficacy of 5-FU
CI to Fluorouracil (5-FU)? Pyrimidine Analog Antimetabolites?
Dihydropyrimidine dehydrogenase (DPD) deficiency
SE to Fluorouracil (5-FU)? Pyrimidine Analog Antimetabolites?
Mucositis
Hand-foot syndrome (with continuos infusion)
Brand name of Gemcitabine? Pyrimidine Analog Antimetabolites
Gemzar
Unique concerns with Gemcitabine (Gemzar)? Pyrimidine Analog Antimetabolites
Prolonged infusion time may increased toxicities
MOA of Taxanes?
M-phase specific: Inhibit microtubule fxn
When used in combo, whys Taxanes given first?
Elimination of Taxanes is reduced when given immediately after admin of Cisplatin or Carboplatin
List Taxanes agents
Paclitaxel (Taxol)
Docetaxel (Taxotere)
Carbazitaxel (Jevtana)
Brand name of Paciltaxel? (Taxanes)
Taxol
Brand name of Docetaxel? (Taxanes)
Taxotere
Unique concerns of Paciltaxel (Taxol) - Taxanes?
Anaphylaxis, hypersensitivity rxn
What’s used to pre-.treat when using Paciltaxel (Taxol) - Taxanes?
Dexamethasone
Diphenhydramine
H2RA
(To reduce anaphylaxis, hypersensitivity rxns)
How should all Taxanes be given IV?
Use non-PVC IV bag and tubing, due to leaching of DEHP
SEs of Paciltaxel (Taxol); Docetaxel (Taxotere); Cabazitaxel - Taxanes?
Myelosuppression
Peripheral neuropathy
Unique concerns of Docetaxel (Taxotere)?
Hypersensitivity
Cardio-Pulmonary: Fluid retention
Pre-treat with dexamethasone 8mg bid x 3 days
SE unique to Docetaxel (Taxotere)? (In addition to Myelosuppression, peripheral neuropathy)
Fluid retention
MOA of Vinca Alkaloids?
M-phase specific: Inhibit microtubule fxn
List agents under Vinca Alkaloids
Vincristine (Vincasar, Oncovin)
Vinblastine (Velban)
Vinorelbine (Navelbine)
Brand name of Vincristine (Vinca Alkaloids)?
Vincasar
Oncovin
Brand name of Vinblastine (Vinca Alkaloids)?
Velban
Brand name of Vinorelbine (Vinca Alkaloids)?
Navelbine
Vinca alkaloids are vesicants, whats the preferred way they should be delivered to the body?
Via central line
How should Extravasation be treated in Vinca Alkaloids?
Warm compress + Hyaluronidase
What’s the only route of admin for vinca alkaloids?
IV only
Don’t admin intrathecally - fatal
Which Vinca Alkaloids causes only mild suppression?
Vincristine (Vincasar, Oncovin)
What’s the max single dose of Vincristine (Vincasar, Oncovin)?
2mg
BBWs of Vincristine (Vincasar, Oncovin)?
Intrathecal admin
Ses of Vincristine (Vincasar, Oncovin)?
Cumulative (dose-dependent) nerve damage/ peripheral neuropathy
BBWs of Vinblastine (Velban) and Vinorelbine (Navelbine)?
Myelosuppression
Peripheral neuropathy (less than vincristine)
Gastroparesis/constipation
MOA of Topoisomerase I inhibitors?
Blocks coiling uncoiling of DNA helix
Agents under Topoisomerase I inhibitors?
Irinotecan (Camptosar)
Topotecan (Hycamtin)
Brand name of Irinotecan? Topoisomerase I inhibitors
Camptosar
Types of diarrhea caused by Irinotecan (Camptosar) Topoisomerase I inhibitors? Tx?
Acute diarrhea (cholinergic sx) - treat with Atropine
Delayed diarrhea - treat with Loperamide (up to 24mg daily)
What’s req B4 use of Irinotecan (Camptosar) Topoisomerase I inhibitors?
Pharmacogenomic testing
Those who are homozygous for the UGT1A1*28 allele are at increased risk for neutropenia and other tcoxicities
SEs of Irinotecan (Camptosar) Topoisomerase I inhibitors?
Diarrhea
Myelosuppression
Mucositis