Treatment Flashcards
Define Growth Factor
Proportion of cells in a tumor actively involved in cell division
Define Generation Time
Length of a cell cycle
Define Resting Phase
Cells do not engage in synthetic activity
Cell Cycle Specific Chemotherapy Mode of Action
Kills in specific phase of cell cycle
Useful in tumors with high growth index
Cell Cycle Non-specific Chemotherapy Mod of Action
Kills in all phases
Useful in tumors with low growth index
Which part of the cell cycle does Nitrosoureas act on?
G0 State
Which part of the cycle does Asparaginase & Actinomycin D act on?
G1
Which medications act on the S phase of the cell cycle?
Antimetabolites
Antifolates
Antipyrimidines
Antipurines
Which part of the cell cycle does Bleomycin act on?
G2
Which part of the cell cycle does Vinca alkaloids act on?
Mitosis
Which medications are phase non-specific?
Alkylating agents
Antitumor antibiotics
Other (cisplatin)
What are the 3 modalities for treatment of cancer?
Surgery: definitive, staging, palliative
Chemotherapy: IV vs. oral, neoadjuvent vs. adjuvent
Radiation: definitive, salvage, palliative
Define Definitive
Treatment plan that has been chosen as the best one for the patient after all other choices have been considered
Define Palliative
Relieving or soothing the symptoms of a disease without producing a cure
Means of Administering Systemic Chemotherapy
Intravenously Injection Intraperitoneal Orally Topically
What are the classes of chemotherapy drugs?
Alkylating agents Antimetabolites Mitotic inhibitors Anthracyclines Topoisomerase inhibitors Miscellaneous
MOA of Alkylating Agents
Directly damage DNA to keep the cell from reproducing
Work in ALL phases of cell cycle
What types of cancers are treated with alkylating agents?
Leukemia Lymphoma Hodgkin's disease Multiple myeloma Sarcoma Lung Breast Ovarian
Alkylating Agent Primary Toxicities
N/V
Myelosuppression
Alopecia
Classes of Alkylating Agents
Nitrogen mustards
Platinum analogs
Tiazenes
Miscellaneous
Nitrogen Mustards Medications (Alkylating Agents)
Mechlorethamine (nitrogen mustard)
Cyclophosphamide (Cytoxan)
Ifosfamide (Ifex)
Cyclphosphamide (Cytoxan) SE
Hemorrhagic Cystitis
Hemorrhagic Cystitis
May shed large segments of bladder mucosa
May lead to urinary obstruction
Concentrated urine may cause severe bladder damage
Increase fluid intake before & after infusion & empty bladder frequently
Platinum Analogues Medications (Alkylating Agents)
Carboplatin (Paraplatin)
Cistplatin (Platinol)
Oxaliplatin (Eloxatin)
Cisplatin (Platinol) SE
Nephrotoxicity
Neurotoxicity
Ototoxicity
What labs do you need to follow with cisplatin?
CBC
CMP
Ways to Prevent Nephrotoxicity with Cisplatin
Vigorously hydrated prior, during, & after administration
Amifostine
Ways to Preven Neurotoxicity with Cisplatin
Amifostine
What cancer is there a possibility of developing with the use of alkylating agents?
Leukemia: due to damaged DNA, can cause long-term damage to the bone marrow
MOA of Antimetabolites
Interfere with DNA & RNA growth by substituting for the normal building blocks of RNA & DNA
Damage during the S phase
What are antimetabolites used to treat?
Leukemias
Breast CA
Ovarian CA
Intestinal tract CA
Primary Antimetabolite Toxicities
Myelosuppression
N/V
Mucositis
Dermatologic (rash, injection site reaction, dermatitis, pruritis)
Classes of Antimetabolites
Folate antagonists
Purine analogs
Pyrimidine analogs
Folate Antagonist Medication
Methotrexate (MTX, Trexall)
Purine Analog Medication
Mercaptopurine (6-MP, Purinethol)
Pyrimidine Analog Medications
Fluorouracil (5-FU)
Gemcitabine (Gemzar)
Methotrexate (MTX; Trexall) Toxicity
Myelosuppression
Mucositis
Damage to liver & kidney
What medication can help reverse the toxic effects of MTX?
Leucovorin
Methotrexate (MTX; Trexall) & Effusions
Methotrexate will go into the effusions and leak out continuously exposing normal tissue to the drug
What can help prevent crystallization of the urine in methotrexate use?
Vigorous hydration & bicarbonate
Drugs that may impair methotrexate (MTX) excretion
ASA NSAIDs Amiodorone Omeprazole PCN Phenytoin Sulfa compounds
MOA of Mitotic Inhibitors
Altering the DNA inside cancer cells to keep them from growing & multiplying
Stops mitosis from happening
What are mitotic inhibitors also known as?
Anti-tumor antibiotics
Antimicrotubules
Classes of Mitotic Inhibitors
Vinca Alkaloids
Taxanes
Epothilone
Antracyclines
Mitotic Inhibitor Toxicities
Myelosuppression
Anaphylactic reactions
Peripheral neuropathy
Types of Cancer Mitotic Inhibitors Treat
Breast Lung Myelomas Lymphomas Leukemias
Taxane Medications
Paclitaxel (Taxol)
Docetaxel (Taxotere)
Epothilone Medications
Ixabepilone (Ixempra)
Vinca Alkaloid Medications
Vinblastine (Velban)
Vincristine (Oncovin)
Vinorelbine (Navelbine)
Where do the Vinca Alkaloids act?
Interfere with M phase
Vincristine (Oncovin) SE
Neuropathy: paresthesias in fingers and toes; distal to proximal; constipation
Anthracyclines Medication
Daunorubicin (Cerubidine)
Doxorubicin (Adriamycin)
Idarubicin
Epirubicin
Anthracyclines SE
Cardiotoxicity: systolic CHF; acute, subacute, late
Risk Factors for Cardiotoxicity
High cumulative dose
Age >70
Previous/current chest radiation
Cardiac disease
Scan to determine ejection fraction with anthracyclines
MUGA
MOA of Topoisomerase Inhibitors
Interfere with topoisomerases
Help separate strands of DNA to be copied in the S phase
Topoisomerase I Inhibitor Medications
Topotecan
Topoisomerase II Inhibitor Medications
Etoposide
Topoisomerase Inhibitors Treat Which Cancers
Leukemias
Lung
Ovarian
Gastrointestinal
Topoisomerase Inhibitors SE
Myelosuppression
Alopecia
GI toxicity
What medications can increase the risk of a second cancer (AML)?
Topoisomerase II inhibitors
Examples of Miscellaneous Agents
Actinomycin-D
Bleomycin
Bleomycin (Blenoxane) SE
Edema of interphalangeal joints Hardening of the skin on the palms & soles Anaphylactic or serum sickness Pulmonary fibrosis Hypotensive reaction
What to watch for with pulmonary fibrosis?
Cough
Dyspnea
Infiltrates
What are targeted therapies?
Newer drugs that attack cancer cells more specifically than traditional chemotherapy drugs
Targeted therapies are most effective in what cancers?
Non-Hodgkin’s lymphoma
Leukemia
Lung CA
Breast CA
Example of Targeted Therapy
Imatinib (Gleevec)
MOA of Differentiating Agents
Act on the cancer cells to make them mature into normal cells
Examples of Differentiating Agents
Retinoids, tretinoin (ATRA or Atralin)
Bexarotene (Targretin)
Arsenic trioxide (Arsenox)
MOA of Hormone Therapy
Change the action or production of female or male hormones
Making the cancer cells unable to use the hormone needed to grow
Classes of Hormone Therapy
Anti-estrogens Aromatase inhibitors Progestins Estrogens Anti-androgens Gonadotropin-releasing hormone
Example of Anti-Estrogen Agent
Tamoxifen
Example of Aromatase Inhibitors
Anastrozole (Arimidex)
Example of Anti-Androgen
Bicalutamide (Casodex)
Example of Gonadotropin-Releasing Hormone
leuprolide (Lupron)
Types of Immunotherapy
Active immunotherapy
Passive immunotherapy
Define Active Immunotherapy
Stimulate the body’s own immune system to fight the disease
Define Passive Immunotherapy
Doesn’t rely on the body to attack the disease
Man made monoclonal antibodies
Define Checkpoint Inhibitor
New monoclonal antibody that works by blocking the signal that cancer cells send out telling the immune system not to attack
Allows immune system to recognize the tumor
Cancers that Respond to Immunotherapy
Melanoma
Kidney CA
Lung CA
Examples of Active Immunotherapy
Rituximab (Rituxan)
BCG
Define Chemotherapy Cycle
Involves a dose of one or more drugs followed by several days or weeks without treatment
Why are chemotherapy cycles separated by a certain amount of days?
Allow normal cells time to recover from drug SE
Define Adjuvent Chemotherapy
Set course given to patients with no evidence of disease after surgery or radiation
Define Neoadjuvent Chemotherapy
Aims at eradicating micrometastatic disease or reduce inoperable disease
Define Induction Chemotherapy
Combination chemotherapy given in high dose to cause a remission
Define Maintenance Chemotherapy
Long term, low dose regimen given in remission
Helps to maintain remission
Define Ionizing Radiation
Production of free hydrogen ions & hydroxyl radicals
Acute Toxicities of Skin Radiation
Erythema
Dry desquamation
Moist desquamation
Subacute Toxicity of Skin Radiation
Hyperpigmentation
Late Toxicities of Skin Radiation
Hypopigmentation in the treatment field
Telangiectasis (spider veins)
Fibrosis
Acute Toxicities of Brain Radiation
Fatigue
Hair loss
Erythema of the skin
Desquamation
Late Toxicities of Brain Radiation
Cognitive dysfunction
Edema
Necrosis
Acute Toxicities of Head/Neck Radiation
Mucositis
Taste dysfunction
Pain
Xerostomia
Signs/Symptoms of Mucositis
Odynophagia
Dehydration
Weight loss
Late Toxicities of Head/Neck Radiation
Permanent xerostomia Soft tissue fibrosis Osteoradionecrosis of the mandible Dysphagia Pharyngeal stricture
Acute (Common & Temporary) Toxicities of Breast Radiation
Skin Redness Dry desquamation Moist desquamation Pain: OTC analgesics, narcotics Fatigue
Late (Uncommon & Permanent) Toxicities of Breast Radiation
Fibrosis Hyperpigmentation Cosmetic failure Rib fracture (rare) Pneumonia (rare) Cardiac (rare) Secondary malignancies (rare)
Acute Toxicities of Lung Radiation
Esophagitis
Cough
Skin Reaction
Fatigue
Ways to Treat Esophagitis
Mucosal anesthetics
Agents that coat the surface
Liquid analgesics
Ways to Treat Cough as a Toxicity of Lung Radiation
Antitussives with or without codeine
Bed rest
Bronchodilators
Corticosteroids
Late Toxicities of Lung Radiation
Radiation pneumonitis
Pulmonary fibrosis
Esophageal stricture
Brachial plexopathy
Acute Toxicities of Esophageal Radiation
Esophagitis Modest skin tanning Fatigue Weight loss Diarrhea N/V
Late Toxicities of Esophageal Radiation
Esophageal stricture & stenosis
Perforation
Pneumonitis
What percentage of patients develop esophageal stricture & stenosis in esophageal radiation treatment?
> 60%
Signs/Symptoms of Esophageal Perforation
Substernal chest pain
Elevated pulse
Fever
Hemorrhage
Acute Toxicities of Abdominal, Stomach, Pancreas, or Hepatobiliary Radiation
Dyspepsia: PPI
Anorexia
Nausea: prophylactic zofran
Fatigue
Late Toxicities of Abdominal, Stomach, Pancreas, or Hepatobiliary Radiation
Bowel obstruction
Worsening DM secondary to worsening pancreatic function
Liver/Kidney issues
Acute Toxicities of Pelvic Radiation
Diarrhea
Rectal irritation
Urinary symptoms
Fatigue
Medications to Treat Diarrhea
Imodium
Lomotil
Signs/Symptoms of Rectal Irritation in Pelvic Radiation
Pain
Bleeding
Urinary Symptoms with Pelvic Radiation
Frequency/urgency
Dysuria
Nocturia
Retention
Late Toxicities of Pelvic Radiation
Persistent urinary symptoms
Bowel changes
Erectile dysfunction
Persistent Urinary Symptoms in Pelvic Radiation
Frequency
Nocturia
Incontinence with stress
Bowel Changes in Pelvic Radiation
Loose stools
Acute Toxicities of Anal Radiation
Skin reactions: dry or moist desquamation Leukopenia Thrombocytopenia Proctitis Diarrhea Cystitis
Subacute & Late Toxicities of Anal Radiation
Chronic diarrhea Rectal urgency Sterility Impotence Vaginal dryness Vaginal fibrosis Possible decreased testosterone
Toxicities of GYN Radiation
Cystitis Proctitis Fistula: rectovaginal, vesicovaginal Vaginal ulceration or necrosis Vaginal stenosis Skin reactions
What is the only systemic toxicity with radiation?
Fatigue
What is degree of damage dependent on?
Types of radiation used
Total dose administered
Field size/fractionation