Onco Flashcards
Carboplatin
Alkylating antineoplastic agent
Platinum derivative
Mechanism:
- bind N7 of guanine on single strand, cross links DNA
- binds NH2 or SH groups on proteins
Dosed according to pt renal fnx (AUC), doesn’t cause renal dysfnx
Toxicity:
- hematopoietic toxicity mostly, less toxic to kidney and neuro
Cisplatin
Alkylating antineoplastic agent
Platinum derivative
Mechanism:
- bind N7 of guanine on single strand, cross links DNA
- binds NH2 or SH groups on proteins
Requires hydration otherwise get renal damage
Toxicity:
- renal toxicity mostly, less neuro toxic
- ototoxicity
Cyclophosphamide
Alkylating antineoplastic agent
Mustard
Prodrug - requires hepatic activation - modify dose based on LFTs
Toxicity:
- alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
- leukopenia and thrombocytopenia; recovers in about 20 days
- mucositis
- bladder toxic in high or prolonged oral dosing; give MESNA with hydration to protect bladder
- high doses - cardiotoxicity, SIADH, lung toxicity
Dacarbazine
Alkylating antineoplastic agent
Emetogenic
Toxicity:
- alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
Melphalan
Alkylating antineoplastic agent
Mustard
Toxicity:
- alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
Mechlorethamine
Alkylating antineoplastic agent
Nitrogen Mustard
Toxicity:
- alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
- leukopenia and thrombocytopenia, recover after 20 days
- vesicant
- emetogenic
Oxaliplatin
Alkylating antineoplastic agent
Platinum derivative
Mechanism:
- bind N7 of guanine on single strand, cross links DNA
- binds NH2 or SH groups on proteins
Toxicity:
- mostly neurotoxic, little renal toxicity
Procarbazine
Alkylating antineoplastic agent Oral bioavailability CNS penetration Hodgkin's lymphoma use use in gliomas/brain tumors Toxicity: - CNS toxicity: somnolence, mood swings - alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
Temozolomide
Alkylating antineoplastic agent
Alkylate O6 position of guanine - distinct repair pathway
Alkylguanine alkyl transfer - low leves are a predictive marker
Use in glioma
Toxicity
- alkylating common: myelosuppression, mucositis, alopecia, impaired wound healing, impaired growth in children, reduced resistance to infxn, nausea/vomit, sterility, TERATOGENIC, carcinogenic
Bleomycin
Antibiotic antineoplastic agent
Binds iron - produces free radicals that damage DNA
Toxicity increased by presence of O2
Renal clearance - reduce dose in renal dysfnx
Toxicity:
- pulmonary and cutaneous, especially with decreased renal fnx - increased toxicity with cumulative dose; underlying pulmonary disease and radiation make this worse
- persists in lungs fatal activation of lung toxicity during surgery with high O2
- raynaud’s phenomenon
For Hodgkins and Germ cell
Dactinomycin
Antibiotic antineoplastic agent Intercalate into DNA helix - inhibit RNA and protein synthesis Use in pediatric neoplasm regimens Toxicity: - myelosuppression - mucositis - diarrhea - nausea/vomit - vesicant - damages skin if gets outside the vein - avoid extravasation - radiation recall
Daunorubicin
Topo II inhibitor antineoplastic agent - topo II makes double strand break, drug binds and stabilizes Anthracycline Radiation sensitive Elimination by liver Toxicity: - myelosuppression - mucositis - alopecia - cardiac toxicity - due to free radical generation - vesicant - extravasation damage
Doxorubicin
Topo II inhibitor antineoplastic agent - topo II makes double strand break, drug binds and stabilizes Anthracycline Radiation sensitive Elimination by liver Toxicity: - myelosuppression - mucositis - alopecia - cardiac toxicity - due to free radical generation - vesicant - extravasation damage
Etoposide
Topo II inhibitor antineoplastic agent - topo II makes double strand break, drug binds and stabilizes Reduce dose with creatinine clearance Used in lung cancers Toxicity: - neutropenia, thrombocytopenia - alopecia - not much end organ damage
Mitoxantrone
Topo II inhibitor antineoplastic agent
- topo II makes double strand break, drug binds and stabilizes
Less cardiotoxic and less emetogenic than anthracyclines
Toxicity:
- myelosuppression, mucositis, GI
Idarubicin
Topo II inhibitor antineoplastic agent - topo II makes double strand break, drug binds and stabilizes Anthracycline Radiation sensitive Elimination by liver Toxicity: - less cardio-toxic than the others on a weight basis - preferred in adults - myelosuppression - mucositis - alopecia - cardiac toxicity - due to free radical generation - vesicant - extravasation damage
Bevacuzimab
Antibody antineoplastic agent Anti-VEGF - prevents angiogenesis Use: tumors expressing VEGF Toxicity: - hypertension - clotting - bleeding - perforation of viscus - CNS dysfnx
Cetuximab
Antibody antineoplastic agent Anti-EGFR - blocks immune activation Use: colon, head and neck cancer Toxicity - infusion rxn - fever, chills, hypotension, bronchospasm - cutaneous - rash - diarrhea
Rituximab
Antibody antineoplastic agent
Anti-CD20
- blocks CD20 on B cells, inhibit lymphocyte signaling and immune activation
Use: non-Hodgkin’s lymphoma
Toxicity:
- infusion rxn - fever, chills, SOB, hypotension
Trastuzumab
Antibody antineoplastic agent
Anti-Her2/neu
- inhibits signaling and immune activation
Use: Her2 positive breast cancer
Toxicity:
- infusion rxn - fever, chills, SOB, hypotension
- cardiomyopathy - decreased EF
Blinatumomab
Antibody antineoplastic agent
Conjugated antibody
Bi-specific T cell engager for CD3 and CD19 BiTE
- bridges T cells and tumor B cells in ALL
Toxicity:
- cytokine release syndrome
- neurotoxicity
Ado-trastuzumab emtansine
Antibody antineoplastic agent Anti-Her2 Toxicity: - cytopenia - liver damage - heart failure
Ipilimumab
Antibody antineoplastic agent Anti-CTLA4 CTLA4 is a negative signal to T cell activation (like PD1) Use: melanoma Toxicity: - autoimmune: gut, hepatic - renal, thyroid
Brentuximab vedotin
Antibody antineoplastic agent
Conjugated antibody - has cytotoxic molecule attached
Anti-CD30 (on Reed Sternberg cells)
Use: Hodgkin’s lymphoma
Pembrolizumab
Antibody antineoplastic agent Anti-PD1 receptor PD1 - tumor antigen that makes cancer cells invisible to immune system Use: melanoma Toxicity: - auto-immune: gut, hepatic - renal, thyroid
Nivolumab
Antibody antineoplastic agent Anti-PD1 receptor PD1 - tumor antigen that makes cancer cells invisible to immune system Use: melanoma Toxicity: - auto-immune: gut, hepatic - renal, thyroid
Decitabine
Antimetabolite antineoplastic agent
DNA hypomethylating agent (methylation silences genes, increased in tumorigenesis)
Nucleoside
Mechanism:
- incorporation into DNA leads to inactivation of DNA methyl transferase - alters gene expression
Not orally bioavailable
Use: sickle cell anemia, acute myeloid leukemia, myelodysplastic syndrome
Toxicity:
- myelosuppression
Azacytidine
Antimetabolite antineoplastic agent
DNA hypomethylating agent (methylation silences genes, increased in tumorigenesis)
Nucleoside
Mechanism:
- incorporation into DNA leads to inactivation of DNA methyl transferase - alters gene expression
Not orally bioavailable
Use: sickle cell anemia, acute myeloid leukemia, myelodysplastic syndrome
Toxicity:
- myelosuppression
Cytarabine
Antimetabolite antineoplastic agent
- S phase active, get incorporated into DNA/RNA and result in cell death - inhibit normal nucleotide synthesis
Inhibits DNA synth from deoxyribonucleotides
Cytosine analog
Metabolized by cytidine deaminase - useful in hepatic and renal dysfnx
Toxicity:
- myelosuppression especially with continuous IV
- hand foot
- eye irritation
- cerebellar
Fluorouracil
Antimetabolite antineoplastic agent
- S phase active, get incorporated into DNA/RNA and result in cell death - inhibit normal nucleotide synthesis
Inhibits DNA synth from deoxyribonucleotides
Mechanism:
- inhibit thymidine synthesis, forms covalent complex with folate and thymidylate synthase
Useful in hepatic and renal impairment
Enhance activity by giving leucovorin with 5FU
Metabolized by dihydropyrimidine dehydrogenase; if DHPD deficiency, severe toxicity - rescue via uridine
Toxicity:
- myelosuppression
- GI
- cerebellar and neurocognitive at high doses
- coronary spasms - rare