Drug Table - Complete Flashcards
Alkylating Agents Mechanism
Produce strong electrophiles throughcarbonium or ethyleneimonium ionintermediates, which covalently bond viaalkylation of nucleophilic moieties in DNA(mostly N7 position of guanine); Cell CycleNon-Specific (CCNS)
Alkylating Agents Important Side Effects
Bone marrow, mucosal toxicity,nausea and vomiting, toxic effectson reproductive systems,increased leukemia risk
Alkylating Agents Miscellaneous
Resistance may occur due to:decreased permeability or uptake;increased rates of catabolism;enhanced DNA repair; increasedglutathione production (inactivatesvia conjugation)
List 11 Alkylating Agents
Mechlorethamine (Mustargen)Cyclophosphamide (Cytoxan)Ifosfamide (Ifex)Carmustine (Gliadel)Lomustine (Ceenu)Dacarbazine (DTIC)Procarbazine (Matulane)Temozolomide (Temodar)Cisplatin (Platinol)Carboplatin (Paraplatin)Oxaliplatin (Eloxatin)
Mechlorethamine class
(Mustargen)Nitrogen mustard
Mechlorethamine mechanism
Alkylating agent; spontaneous conversion to active metabolites in body fluids orenzymatically converted in liver
Mechlorethamine Therapeutics
Hodgkin’s disease, topically for treatment of cutaneous T-cell lymphoma
Mechlorethamine “Other” side effects
Severe nausea and vomiting,myelosuppression (leucopenia,thrombocytopenia)
Mechlorethamine Misc
Don’t use much anymore due to sterility
Cyclophosphamide(Cytoxan)Class
Nitrogen mustard
Cyclophosphamide(Cytoxan)Mechanism
Alkylating agent; conversion by hepatic cytochrome P450 to active metabolite phosphoramide mustard
Cyclophosphamide(Cytoxan)Therapeutics
Most widely used alkylating agent (broad clinical spectrum); singly or incombination for ALL, CLL, non-Hodgkin’s lymphoma, and breast, lung, and ovarian cancer
Cyclophosphamide(Cytoxan)Important Side Effects
Hemorrhagic cystitis (bladderirritation) due to acrolein (toxicdrug metabolite); adequatehydration and administration ofMESNA (2-mercaptoethanesulfonate) minimizes problem
Cyclophosphamide(Cytoxan)”Other” Side Effects
Nausea, vomiting,myelosuppression
Cyclophosphamide(Cytoxan)Miscellaneous
Relatively long plasma half-life (7-15 hrs); taken orally
Difference between Ifosfamide and Cyclophosphamide
TherapeuticsIfos is used for Sarcoma and testicular cancerCyclophosphamide is the most widely used
Carmustine (Gliadel)Lomustine (Ceenu)Class
Nitrosoureas
Carmustine (Gliadel)Lomustine (Ceenu)Mechanism
Alkylating agent
Carmustine (Gliadel)Lomustine (Ceenu)Therapeutics
Brain tumors (cross blood-brain barrier)
Carmustine (Gliadel)Lomustine (Ceenu)Imp Side Effects
Renal toxicity, pulmonary fibrosis
Carmustine (Gliadel)Lomustine (Ceenu)Other side effects
Profound myelosuppression,severe nausea and vomiting
Dacarbazine (DTIC)class
Triazenes
Dacarbazine (DTIC)Mechanism
Alkylating agent; prodrug activated by livercytochromes
Dacarbazine (DTIC)Therapeutics
Part of ABVD for Hodgkin’s disease; also, malignant melanoma
Dacarbazine (DTIC)”Other” Side Effects
Nausea and vomiting,myelosuppression (neutropenia, thrombocytopenia), flu-likesymptoms (fever, fatigue)
Dacarbazine (DTIC)Miscellaneous
IV administration
Procarbazine(Matulane)class
Triazenes
Procarbazine(Matulane)Mechanism
Alkylating agent; forms free radicals
Procarbazine(Matulane)Therapeutics
Hodgkin’s lymphoma
Procarbazine(Matulane)Important side effects
May cause leukemia
Temozolomide(Temodar)class
Triazenes
Temozolomide(Temodar)Mechanism
Alkylating agent; nonenzymatic conversionto methylhydrazine at physiologic pH
Temozolomide(Temodar)Therapeutics
Malignant gliomas
Temozolomide(Temodar)”Other” Side Effects
Nausea and vomiting,myelosuppression (neutropenia,thrombocytopenia), flu-likesymptoms (fever, fatigue)
Temozolomide(Temodar)Miscellaneous
Taken orally
Cisplatin (Platinol)class
Platinum analogs
Cisplatin (Platinol)Mechanism
Alkylating agents that do not formcarbonium ion intermediates or formallyalkylate DNA; covalently bind nucleophilicsites on DNA (e.g., guanine N7); convertedto active cytotoxic forms by reacting withwater to form (+)charged, hydratedintermediates that react with DNA guanine,forming inter- and intrastand cross-links
Cisplatin (Platinol)Therapeutics
Testicular, ovarian, cervical, andbladder cancers; also useful intreatment of head and neck cancer,and lung carcinoma
Cisplatin (Platinol)Imp Side Effects
Nephrotoxicity, ototoxicity,peripheral motor and sensoryneuropathy at high doses
Cisplatin (Platinol)Other side effects
Severe nausea and vomiting,mild to moderatemyelosuppression
Carboplatin(Paraplatin)Class
Platinum analogs
Carboplatin(Paraplatin)Mechanism
Alkylating agents that do not formcarbonium ion intermediates or formallyalkylate DNA; covalently bind nucleophilicsites on DNA (e.g., guanine N7); convertedto active cytotoxic forms by reacting withwater to form (+)charged, hydratedintermediates that react with DNA guanine,forming inter- and intrastand cross-links
Carboplatin(Paraplatin)Therapeutics
Ovarian cancer
Carboplatin(Paraplatin)Other side effects
Myelosuppression(thrombocytopenia)
Oxaliplatin (Eloxatin)class
Platinum analogs
Oxaliplatin (Eloxatin)Mechanism
Alkylating agents that do not formcarbonium ion intermediates or formallyalkylate DNA; covalently bind nucleophilicsites on DNA (e.g., guanine N7); convertedto active cytotoxic forms by reacting withwater to form (+)charged, hydratedintermediates that react with DNA guanine,forming inter- and intrastand cross-links
Oxaliplatin (Eloxatin)Therapeutics
Gastric and colorectal cancer
Oxaliplatin (Eloxatin)Imp Side effects
Peripheral sensory neuropathy(cold-induced)
Oxaliplatin (Eloxatin)Other side effects
Neutropenia
Antimetabolites in general
Structural analogs of folic acid or of thepurine/pyramidine bases found in DNA; actin S-phase (cell cycle specific)
Antimetabolites list
Methotrexate (Trexall)Pemetrexed (Alimta)5-Fluorouracil (5-FU, Carac)Cytarabine (AraC, Depocyt)Gemcitabine (dFdC, Gemzar)6-Mercaptopurine (Purinethol)
Methotrexate (Trexall) class
Folate analogs
Methotrexate (Trexall) mech
Inhibits dihydrofolate reductase (DHFR),which converts dietary folate totetrahydrofolate (THF) needed for thymidineand purine synthesis; given orally orintrathecally
Methotrexate (Trexall) Therapeutics
Childhood ALL and choriocarcinoma;combination therapy for Burkitt’slymphoma and carcinomas of breast,ovary, head and neck, and bladder;administered intrathecally formeningeal leukemia and meningealmetastases of tumors (can’t crossBBB); high-dose for osteosarcoma
Methotrexate (Trexall) Imp Side effects
Renal toxicity (crystallization inurine at high doses), hepatotoxicity(long-term, fibrosis/cirrhosis),reproductive (defective oogenesisor spermatogenesis, abortion)
Methotrexate (Trexall) Other side effects
Bone marrow(myelosuppression,spontaneous hemorrhage); GItoxicity (oral ulceration,stomatitis)
Methotrexate (Trexall) Misc
Can use leucovorin to prevent toxiceffects of MTX, as healthy cells cantake it up a lot better than tumor cells
Pemetrexed (Alimta) class
Folate analogs
Pemetrexed (Alimta) Mech
Polyglutamate forms that inhibit THFdependentenzymes (e.g., DHFR, TS);metabolized to polyglutamate forms thatinhibit THF-dependent enzymes (e.g.,DHFR, thymidylate synthase (TS))
Pemetrexed (Alimta) Therapeutics
Colon cancer, mesothelioma, non-smallcell lung cancer, pancreatic cancer
5-Fluorouracil (5-FU, Carac) class
Pyramidine analogs
5-Fluorouracil (5-FU, Carac) Mech
5-FU is converted to active metabolites: 5-FdUMP inhibits TS; 5-FdUTP incorporatesinto RNA & interferes with RNA function;prodrug [capesitabine] ribosylated and phophosrylated into5-FdUMP
5-Fluorouracil (5-FU, Carac) Therapeutics
Combination therapy for breast,colorectal, gastric, head and neck,cervical and pancreatic cancer;topically for basal cell carcinoma
5-Fluorouracil (5-FU, Carac) Imp Side Effects
Hand-foot syndrome (erythema,sensitivity of palms and soles),cardiac toxicity (acute chest pains)
5-Fluorouracil (5-FU, Carac) Other side effects
Anorexia and nausea; mucosalulcerations, stomatitis, diarrhea;thrombocytopenia and anemia
5-Fluorouracil (5-FU, Carac) Misc
Leucovorin can potentiate effects of5-FU; must be given IV (GI toxicityand rapid degradation + metabolismin gut and liver)
Cytarabine (AraC, Depocyt) Class
Pyramidineanalogs
Cytarabine (AraC, Depocyt) Mech
Ara-C converted by deoxycytidine kinase toAra-CMP –> Ara-CTP; terminates DNAsynthesis as Ara-CTP
Cytarabine (AraC, Depocyt) Therapeutics
AML (most effective treatment), ALLand blast phase CML
Cytarabine (AraC, Depocyt) Other side effects
Severe myelosuppression(leucopenia, thrombocytopenia,anemia), GI tract toxicity(ulceration, stomatitis, diarrhea)
Gemcitabine (dFdC, Gemzar) class
Pyramidineanalogs
Gemcitabine (dFdC, Gemzar) Mech
Converted to active metabolites: dFdCDPinhibits ribonucleotide reductase (lowersdeoxyribonucleotide); dFdCTP incorporatesinto DNA, terminating DNA synthesis
Gemcitabine (dFdC, Gemzar) Therapeutics
Pancreatic cancer; effective againstnon-small cell lung cancer, ovarian,bladder, esophageal, and head andneck cancer
Gemcitabine (dFdC, Gemzar) Other side effects
Myelosuppression (leucopenia,thrombocytopenia, anemia), flulike
Gemcitabine (dFdC, Gemzar) Misc
More effective against solid tumorsthan cytarabine
6-Mercaptopurine (Purinethol) Class
Purine analogs(antimetabolites)
6-Mercaptopurine (Purinethol) Mech
Prodrug metabolized by hypoxanthineguaninephosphoribosyl transferase(HGPRT) to 6-thioinosinic acid (TIMP);TIMP inhibits first step of de novo purinebase synthesis and the formation of AMPand xanthinylic acid from inosinic acid,reducing purine levels. As well, TIMP isconverted to thio-guanine ribonucleotides,inhibiting DNA and RNA synthesis
6-Mercaptopurine (Purinethol) Therapeutics
Maintain remission in acute ALL
6-Mercaptopurine (Purinethol) Imp side effects
Hepatotoxicity in prolonged use
6-Mercaptopurine (Purinethol) Other side effects
Bone marrow suppression
6-Mercaptopurine (Purinethol) Misc
Drug interaction with allopurinol (forgout), which inhibits xanthineoxidase; decrease 6-MP dose toavoid drug accumulation andtoxicities
DNA Intercalating Agents General Mechanism
Bind DNA through intercalation betweenspecific bases, blocking DNA, RNA or bothsynthesis; cause DNA strands to break andinterfere with cell replication; CCNS
Dactinomycin (Actinomycin D, Cosmegen) Mech
Intercalates G-C base pairs of DNA,interfering with DNA-dependant RNApolymerase; also causes ssDNA breaks
Dactinomycin (Actinomycin D, Cosmegen) Therapeutics
Pediatric tumors (Wilms’ tumor,rhabdomyosarcoma Ewing’s sarcoma);choriocarcinoma in women
Dactinomycin (Actinomycin D, Cosmegen) Imp Side effects
Hematopoietic suppression withpancytopenia
Dactinomycin (Actinomycin D, Cosmegen) Other side effects
Anorexia, nausea, vomiting
Daunorubicin (Cerubidine) Class
Anthracyclines
Daunorubicin (Cerubidine) Mech
Intercalate between DNA base pairs anddonate electrons to O2 to form superoxide;superoxide reacts with itself to form H2O2 –> cleaved in the presence of Fe to form OHradical, which cleaves DNA
Daunorubicin (Cerubidine) Therapeutics
AML
Daunorubicin (Cerubidine) Imp Side effects
Irreversible dose-dependentcardiotoxicity; alopecia
Daunorubicin (Cerubidine) Other side effects
Myelosuppression(neutropenia), stomatitis, GIdisturbances
Daunorubicin (Cerubidine) Misc
Dexrazoxane is cardio-protective
Idarubicin (Idamycin) Class
Anthracyclines
Idarubicin (Idamycin) Mech
Intercalate between DNA base pairs anddonate electrons to O2 to form superoxide;superoxide reacts with itself to form H2O2 –> cleaved in the presence of Fe to form OHradical, which cleaves DNA
Idarubicin (Idamycin) Therapeutics
AML
Idarubicin (Idamycin) Imp Side effects
Irreversible dose-dependentcardiotoxicity; alopecia
Idarubicin (Idamycin) Other side effects
Myelosuppression(neutropenia), stomatitis, GIdisturbances
Idarubicin (Idamycin) Misc
Dexrazoxane is cardio-protective
Doxorubicin (Adriamicin, Doxil) class
Anthracyclines
Doxorubicin (Adriamicin, Doxil) Mech
Intercalate between DNA base pairs anddonate electrons to O2 to form superoxide;superoxide reacts with itself to form H2O2 –> cleaved in the presence of Fe to form OHradical, which cleaves DNA
Doxorubicin (Adriamicin, Doxil) Therapeutics
Sarcomas, breast and lung carcinomas,malignant lymphomas
Doxorubicin (Adriamicin, Doxil) Imp side effects
Irreversible dose-dependentcardiotoxicity; alopecia
Doxorubicin (Adriamicin, Doxil) Other side effects
Myelosuppression(neutropenia), stomatitis, GIdisturbances
Doxorubicin (Adriamicin, Doxil) Misc
Dexrazoxane can be used to preventcardiotoxic effects
Epirubicin (Ellence) Class
Anthracyclines
Epirubicin (Ellence) Mech
Intercalate between DNA base pairs anddonate electrons to O2 to form superoxide;superoxide reacts with itself to form H2O2 –> cleaved in the presence of Fe to form OHradical, which cleaves DNA
Epirubicin (Ellence) Therapeutics
Metastatic breast cancer, gastriccancer
Epirubicin (Ellence) Imp side effects
Irreversible dose-dependentcardiotoxicity; alopecia
Epirubicin (Ellence) Other side effects
Myelosuppression(neutropenia), stomatitis, GIdisturbances
Epirubicin (Ellence) Misc
Dexrazoxane can be used to preventcardiotoxic effects
Bleomycin (Blenoxane) Mech
Acts in G2 phase of cell cycle. Binds toDNA, producing ss- and dsDNA breaks
Bleomycin (Blenoxane) Therapeutics
Combination therapy for testiculartumors or Hodgkin’s disease;squamous cell carcinomas andlymphomas
Bleomycin (Blenoxane) Imp side effects
Pulmonary toxicity (pulmonaryfibrosis); cutaneous toxicity(hyperpigmentation,hyperkeratosis, erythema);hyperthermia
Bleomycin (Blenoxane) Other side effects
Minimally myelo- andimmunosuppressive (often usedin combo therapy); headache,nausea, vomiting
Bleomycin (Blenoxane) Misc
Dexrazoxane can be used to preventcardiotoxic effects
Microtubule Inhibitors
Inhibit mitosis and cause metaphase arrestby interfering with microtubule function(tubulin (de)polymerization); CCS
Vinblastine (Velban) Class
Vinca alkaloids
Vinblastine (Velban) Mech
Block tubulin polymerization intomicrotubules
Vinblastine (Velban) Therapeutics
Metastatic testicular tumors (withbleomycin, cisplatin); component ofABVD used for Hodgkin’s disease
Vinblastine (Velban) Other side effects
Myelosuppression, nausea,vomiting
Vincristine (Oncovin) Class
Vinca alkaloids
Vincristine (Oncovin) Mech
Block tubulin polymerization intomicrotubules
Vincristine (Oncovin) Therapeutics
Childhood ALL (with glucocorticoids);Hodgkin’s and non-Hodgkin’slymphomas
Vincristine (Oncovin) Important side effects
Dose-limiting neurotoxicity(peripheral neuropathy)
Vincristine (Oncovin) Other side effects
Relatively low bone marrowtoxicity
Paclitaxel (Taxol, Abraxane) Class
Taxanes
Paclitaxel (Taxol, Abraxane) Mech
Block microtubule depolymerization intotubulin
Paclitaxel (Taxol, Abraxane) Therapeutics
Metastatic breast, ovarian, lung, andhead and neck cancers
Paclitaxel (Taxol, Abraxane) Imp side effects
Peripheral neuropathy
Paclitaxel (Taxol, Abraxane) other side effects
Neutropenia; hypersensitivityreactions
Docetaxel (Taxotere) class
Taxanes