Chemo Flashcards

1
Q

Vesicant Chemos

A

Anthracyclines (Adria)
Act-D
Vincas (vincristine, vinblastine, vinorelbine)
Mitomycin-C

(Cisplatin)

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2
Q

Need dose adjustment for hepatic function

A
Anthracyclines (adriamycin)
Act-D
Texans (taxol, taxotere)
Vinca alkaloids (vincristine, vinblastine, vinorelbine)
Irinotecan
5-FU
Gemcitabine
MTX
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3
Q

What chemos cause alopecia?

A
Taxol (taxotere not as much)
Adriamycin/doxil not as much
Cyclophosphamide 
Etoposide
Vinca alkaloids
5-FU
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4
Q

What causes CNS toxicity with Ifosfamide?

…Hemorrhagic cystitis?

A

Chloracetaldehyde (methylene blue)

Acrolein (Mensa)

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5
Q

3 hour taxol infusion

A

More neurotoxicity

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6
Q

24 hour taxol infusion

A

More myelosuppresion

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7
Q

Taxol before cisplatin

A

Less myelosuppresion

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8
Q

Which chemos require dose reduction for kidney function?

A
Platinums
Bleomycin
Melphalan
Topotecan
Mitomycin-C
Hydroxyurea
Capecitabine
Cytoxan
MTX
Ifosfamide
Alimta
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9
Q

Topoisomerase I Inhibitors

A

Topotecan

Irinotecan

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10
Q

Topoisomerase II inhibitors

A

Etoposide
Adriamycin
Mitoxantrone

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11
Q

Which chemos cause secondary malignancies?

A
Etoposide
Cytoxan
Cisplatin
Melphalan
Ifosfamide
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12
Q

Calvert’s formula

AKA AUC

A

Carboplatin (4-6)

Dose = AUC * (GFR+25)

GFR is a function of weight

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13
Q

Vinca alkaloids:

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Vincristine, Vinorelbine

  • Prevent microtubule polymerization (M-phase specific)
  • Constipation/ileus, alopecia, peripheral neuropathy (ataxia, foot drop, muscle wasting), leukopenia; SIADH, ARDS
  • Not much nausea, VESICANT; vincristine can cause autonomic neuropathy

*Hepatic excretion/dose adjustment

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14
Q

Taxol

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Taxane

  • Stabilizes microtubules, preventing cell division (M phase specific)
  • Myelosuppresion (increased with 24 vs 3 hour infusion), neurotoxic (increased with 3 hour vs 24 hour infusion), hypersensitivity (cremphor), alopecia, asymptomatic bradycardia, cough/dyspnea/pneumonitis
  • Premed with H2 blockers, H1 blocker and dexamethasone

*Hepatic dose reduction

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15
Q

Cytoxan/Cyclophosmamide

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Traditional alkylator - nitrogen mustard

  • Interstrand DNA cross links (N-7 on guanine) (cell cycle non-specific)
  • Myelosuppresion, SIADH, alopecia, secondary malignancy, hemorrhagic cystitis at high doses, cardiotoxicity (myocyte necrosis or myopericarditis), N/V, pulmonary fibrosis
  • Require activation in liver —> CANNOT USE IP

Renal dose adjustment

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16
Q

Ifosfamide

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Traditional alkylator - nitrogen mustard
-Interstrand DNA crosslinks (N-7 on guanine) (cell cycle non-specific)
-Hemorrhagic cystitis, myelosuppresion, neurotoxicity (CNS), renal failure,
Fanconi syndrome, N/V, constipation, alopecia, hepatotoxicity, SIADH
-PRODRUG; CNS toxicity more likely with low albumin, older age

*Renal/hepatic dose adjustment

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17
Q

Melphalan

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Traditional alkylator - nitrogen mustard

  • DNA Interstrand crosslinks (N-7 on guanine)
  • myelosuppresion, alopecia, mucositis, diarrhea, interstitial pneumonitis/pulmonary fibrosis
  • Renal dose adjustment, secondary malignancies
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18
Q

Methotrexate

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Antimetabolite - folate antagonist

  • Inhibits dihydrofolate reductase (DHFR) (S phase specific)
  • leukopenia, interstitial pneumonitis, alopecia (at high doses), stomatitis/mucositis, hepatotoxicity and renal toxicity
  • High dose crosses BBB; leukovorin rescue

*Hepatic and renal dose adjustment

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19
Q

Pemetrexed

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

AKA Alimta
Antimetabolite - folate antagonist
-Inhibits three enzymes in folate metabolism (thymidylate synthase, DHFR, glycinamide ribonucleotide formyltransferase)
-Fatigue, myelosuppression, rash, ocular toxicity
-Give with folate and B12

*renal and hepatic dose adjustment

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20
Q

Fluorouracil (5-FU)

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Antimetabolite - pyrimidine analog

  • Inhibits thymidylate synthase (S phase specific)
  • Myelosuppresion, mucositis, hand-foot, diarrhea, skin discoloration, nail changes, cerebellar ataxia, cardiac ischemia
  • Give following HD; Efudex cream for vulvar; crosses blood-brain barrier

*Hepatic dose adjustment

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21
Q

Capecitabine (Xeloda)

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Antimetabolite - pyrimidine analog

  • Prodrug of 5-FU —> inhibits thymidylate synthase (S phase specific)
  • hand-foot, diarrhea, N/V, rash, mucositis
  • Renal dose adjustment

ORAL form of 5-FU - converted intracellularly more efficiently in tumor cells than normal

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22
Q

Gemcitabine

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Antimetabolite

  • Inhibits DNA replication (but not S phase specific)
  • Leukopenia, thrombocytopenia, N/V, mucositis, flu-like syndrome, edema; radiation recall, rare ARDS/pulmonary toxicity
  • Prodrug

*Hepatic dose adjustment

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23
Q

Cisplatin

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Platinum

  • Intrastrand DNA crosslinks (N-7 of guanine) (cell cycle non-specific)
  • Very emetogenic, nephrotoxic, neurotoxicity (ototoxicity), hypomag/K, myelosuppression
  • HYDRATION with Mg and K

*Renal dose adjustment

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24
Q

Carboplatin

  • Mechanism of action (cell cycle specificity)
  • Toxicity
  • Misc
A

Platinum

  • Intrastrand DNA crosslinks (N-7 of guanine) (cell cycle non-specific)
  • myelosuppression (esp thrombocytopenia), N/V
  • AUC

*Renal dose adjustment

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25
Oxaliplatin - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Platinum - Intrastrand DNA crosslinks (N-7 of guanine) - Neuropathy (cold), hepatotoxicity - Colon cancer *Renal dose adjustment
26
Bleomycin - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Antitumor antibiotic - Inhibits DNA synthesis/repair (G2 specific) - Pulmonary fibrosis, hyperpigmentation, NOT myelosuppresive or emetogenic - Requires metal ion cofactor - primarily copper, but also nickel, manganese and cobalt *Check DLCO; max dose 400U
27
Dactinomycin/Act-D - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Antitumor antibiotic - Intercalates into DNA and inhibits transcription of RNA (cell cycle non-specific but most active in G1) - Nausea, diarrhea, alopecia, hyperpigmentation, mucositis/stomatitis, myelosuppresion, hepatotoxicity, radiation recall dermatitis - Vesicant *Hepatic dose adjustment
28
Mitomycin-C - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Antitumor antibiotic - Inhibits DNA synthesis - CHF (doses > 30 mg/m2), fever, alopecia, N/V, myelosuppresion, nail changes, HUS *Renal dose adjustment
29
Etoposide/VP-16 - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Epidophyllotoxin (from the Mandrake plant) - Topoisomerase II inhibitor (S-G2 specific); also binds tubulin - Myelosuppression, mucositis, N/V, alopecia, secondary malignancy (MLL 11q23 leukemia 1-3 years), vasospastic angina - Hypotension 2/2 polysorbate 80; irritant * Renal and hepatic dose adjustment* * Risk of leukemia increases after cumulative dose of > 2000
30
Irinotecan - Mechanism of action (cell cycle specificity) - Toxicity - Misc
- Topoisomerase I inhibitor - Diarrhea (severe), neutropenia, N/V, cholinergic rxn (rhinitis, salivation, diaphoresis, flushing), alopecia, hepatotoxicity - Prodrug? *Hepatic dose adjustment
31
Topotecan - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Camptothecin - Topoisomerase I inhibitor (M phase specific) - leukopenia/thrombocytopenia, N/V (mild), alopecia, mucositis, myalgia/arthralgia, rash, increased LFTs *Renal dose adjustment
32
Adriamycin/Doxorubicin - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Anthracyclines - Inhibit topoisomerase II, inhibits RNA/DNA synthesis (cell cycle non-specific) - Myelosuppresion, cardiac toxicity - CHF at doses > 450/550 mg (get pre-treatment MUGA), radiation recall, secondary malignancies (1-3 years), N/V, red urine/tears, mucositis, VESICANT - Requires IRON; dexrazoxane chelates iron and reduces cardiomyopathy risk; also use for extravisation; DOES NOT CROSS PLACENTA *Hepatic dose adjustment
33
Doxil/liposomal doxorubicin - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Anthracyclines - Inhibits topo II, DNA/RNA synthesis (cell cycle non-specific) - Less alopecia, myelosuppresion, nausea/vomiting, cardiotoxicity BUT MORE hand-foot syndrome (PPE), mucositis and infusion rxns; radiation recall dermatitis - Irritant rather than vesicant *Hepatic dose adjustment
34
Chemos effected by drug efflux pump
Doxorubicin, etoposide, vinca alkaloids, taxanes, topotecan, MTX
35
Skipper-Schabel-Wilcox Model (AKA Log-Kill Model)
Constant exponential rate of tumor cell growth (constant doubling time) therefore, cell should be killed at a constant exponential rate
36
Gompertzian Model
Cell growth is not constant —> initial tumor growth is first order, however later growth is much slower as tumor enlarges; therefore, log-kill greater for smaller tumors than larger ones
37
Norton-Simon Hypothesis
Smaller tumors regrow at a higher growth fraction **idea of increased intensity or sequential therapy/dose-dense schedule
38
Goldie Coldman Hypothesis
Populations of cells within a tumor are capable of randomly mutation and becoming resistant to chemotherapy —> occur at 1 in 10^6 (tumor is not yet detectable) **To avoid resistance, use non-cross-resistant chemotherapy or alternating
39
Hexalan (Altretamine) - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Alkylator - DNA crosslinker or anti-metabolite (cell-cycle non-specific) - myelosuppresion, N/V, neuropathy, renal toxicity, ataxia/seizures/mood disorder - Prodrug requires metabolism in liver
40
Taxotere (docetaxel) - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Taxane - Stabilizes microtubules, preventing cell division (M phase specific) - Myelosuppression (more than taxol), hypersensitivity, edema/fluid retention (2/2 polysorbate 80), less alopecia - Premed with dexamethasone to decrease edema *Hepatic dose reduction
41
Radiation recall chemotherapy
Anthracyclins Act-D Gemcitabine (Etoposide)
42
Bevacizumab/Avastin - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Humanized monoclonal antibody - Binds to VEGFA and prevents binding to the VEGFR - decreases angiogenesis - Hypertension, headache, delayed healing, thrombosis, fistulas - Hold for proteinuria
43
Bortezomib/Velcade - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Small molecule inhibitor - proteosome inhibitor - promotes apoptosis - peripheral neuropathy, thrombocytopenia, N/V/D, rash, sudden cardiac death - not really used in GYN
44
Cetuximab (IMC-C225) - Mechanism of action (cell cycle specificity) - Toxicity - Misc
Chimeric monoclonal antibody - Binds to extracellular EGFR, blocking tyrosine kinase activity - Nausea, rash, allergy - Not used in GYN
45
Erlotinib/Tarceva
Small molecule inhibitor - Inhibits EGFR tyrosine kinase leading to cell cycle arrest and inhibition of angiogenesis - Diarrhea, rash, interstitial lung disease - Not used in GYN
46
Evrolimus/Afinitor
Small molecule inhibitor - mTOR inhibitor —> mTOR is downstream in PI3K pathway and regulates cell growth and proliferation - Rash, stomatitis, infections, edema, fatigue - Endometrial cancer trials
47
Ipilimumab/Yervoy
Immune checkpoint inhibitor - Monoclonal antibody to CTLA-4, binding and preventing interaction of T cell CTLA-4 with tumor cell CD80 and CD86 - ‘itises (dermatitis, pneumonitis, enteritis/colitis, etc), inflammatory demyelinating polyneuropathy - Used in cervix cancer clinic trials with PDL-1 inhibitors; approved for melanoma
48
Nivolumab/Opdivo
Immune checkpoint inhibitor - monoclonal antibody to PD-1 on T cells, preventing interaction with PDL-1 on tumor cells - ‘itises (dermatitis, pneumonitis, GI-itises, thyroiditis, iris inflammation), fatigue, weakness, cardiac arrhythmia - Clinical trials in GYN; approved in melanoma, lung cancer, urothelial
49
Pembrolizumab/Keytruda
Immune checkpoint inhibitor - Monoclonal antibody against PD-1 on T cells, preventing interaction with tumor PDL-1 - itises (dermatitis, pneumonitis, GI-itises, pituitary inflammation, thyroiditis, pancreatitis, nephritis), fatigue, arthralgia - Approved for MSI high or MMR cancers, NSCLC, melanoma, head/neck cancers; just approved for PDL-1 high cervix cancer
50
Imatinib/Gleevac
Small molecular inhibitor - Tyrosine kinase inhibitor - designed to target Bcr-Abl fusion protein formed as a result of the PHL chromosome; also inhibits PDGF, SCR (stem cell receptor) and c-kit - Used in GIST and CML
51
MEK inhibitors
Selumetinib, trametinib - Inhibit MEK1/MEK2 - Used in LGSOC (clinical trial), BRAF mutated melanoma and KRAS/BRAF mutated colon cancers
52
Trastuzimab/Herceptin - Mechanism of action - Toxicxity - Misc
Humanized monoclonal antibody - Binds to extracellular Her-2 (AKA Neu, gene = ERBB2) and inhibits signaling - Heart failure - Serous HER2 expression uterine cancers
53
Gefitinib/Iressa
Small molecule inhibitor - Inhibits EGFR tyrosine kinase leading to cell cycle arrest and inhibition of angiogenesis - Rash, diarrhea, interstitial lung disease, corneal ulcer - Lung mostly
54
Types of antiemetics
5-HT3 receptor antagonists (ondansetron, granisetron, palonosetron (aloxi)) NK1 receptor antagonists (aprepitant (emend)) Dopamine blockade (Reglan, Phenothiazine (compazine), haldol/zyprexa) Benzodiazepine (anticipatory nausea) Steroids (dexamethasone)
55
Amifostine/Ethyol - Mechanism of action (cell cycle specificity) - Toxicity - Misc
- Free radical scavenger; binds to cisplatin metabolites and is used to treat platinum-associated toxicity; can also use for xerostomia associated with head and neck radiation - Nausea/vomiting, hypotension, hypocalcemia, SJS - May make chemoRT less effective; differential effects on normal/cancer cells due to different concentrations of activating alkaline phosphates energy
56
What chemos are prodrugs?
Capecitabine Irinotecan Ifosfamide
57
What chemos cause hand-foot syndrome (PPE)?
Doxil, 5-FU and capecitabine, docetaxel, vinorelbine
58
Which chemos are pulmonary toxic?
Checkpoint inhibitors cause pneumonitis Bleomycin, alkylating agents (mitomycin-C), nitrosoureas can cause pulmonary fibrosis Taxol can cause pneumonitis Gemzar can cause an ARDS-like syndrome
59
What chemos are cardiotoxic?
Cardiomyopathy: anthracyclines (adriamycin, daunomycin) Arrhythmia: anthracyclines and taxol (5-FU rare) Cardiac myocyte necrosis: Cytoxan Vasospastic angina: Etoposide
60
What chemos are GU toxic?
Kidney damage: cisplatin, MTX, nitrosoureas, mitomycin-C | Hemorrhagic cystitis: Ifosfamide, cytoxan
61
What chemos can cause SIADH?
Vincas, high dose cytoxan, cisplatin
62
What chemos are highly emetogenic?
Cisplatin (>50 mg/m2), cytoxan (>1500 mg/m2), carbo (AUC >4) **Treat with 5-HT3 and dexamethasone and NK-1
63
What chemos are moderately emetogenic?
Cisplatin (<50 mg/m2), cytoxan (750/1500 mg/m2), doxorubicin, MTX (>1000 mg/m2), Ifosfamide, high dose 5-FU **Treat with 5-HT3 and dexamethasone
64
AMG386/Trebananib
Monoclonal antibody -Binds to soluble antiopoietin 1/2 and prevents interaction with receptor Tie2 **Acts through a non-VEGF dependent angiogenesis pathway
65
Dexrazoxane
Cardioprotective agent used with adriamycin; can also use to treat Adria extravasation -chelates iron **Possible higher rate of secondary malignancies
66
Parp Inhibitors - Mechanism of action - Toxicity - Misc
Niraparib, olaparib, rucaparib - Inhibit single stranded DNA damage repair via nucleotide excision repair —> thus cells are dependent upon homologous recombination for repair of these lesions; more highly active in BRCA patients since they have a defect in HR - Myelosuppression, HTN, fatigue - “Synthetic lethality; approved for trx of BRCA mutation OC and maintenance after response to a platinum based regimen
67
What are SERMs? - Mechanism of action - Side effects
Tamoxifen and raloxifen - selective estrogen receptor modulators —> block the activity of E in the breast; tam is E agonist in the uterus - blood clots, stroke, leg swelling/pain/cramping, HA, vasomotor symptoms, fatigue, cataracts; Tam can lead to endometrial polyps/hyperplasia/carcinosarcoma; patients on raloxifene complain of worse sexual dysfunction
68
Aromatase inhibitors - Mechanism of action - Side effects
Anastrozole, letrozole, exemestane - block the conversion of androgens into estrogen - AES fewer than SERMS; heart disease, more bone loss, and more fractures; most common AE is joint stiffness or pain; can also see muscle pain, vasomotor symptoms, vaginal dryness, carpal tunnel syndrome, thinning hair, mood swings