Final Exam Flashcards
What are the hallmarks of cancer?
-sustaining proliferative staging
-avoiding immune destruction
-enabling replicative immortality
-activating invasion and metastasis
-inducing or accessing vasculature
-genome instability and mutation
-resisting cell death
What are the characteristics of cancer?
-uncontrolled cellular growth
-invasion of tissue
-metastasis
neoplasm
a new growth; may be benign or malignant
tumor
a lump or swelling; may be benign or malignant
cancer
any malignant neoplasm
hyperplasia
an increase in organ or tissue size due to an increase in the number of cells; can be physiologic, compensatory, or pathologic
metaplasia
an adaptive substitution of one type of adult tissue to another type of adult tissue
dysplasia
an abnormal cellular proliferation in which loss of normal architecture occurs
anaplasia
a loss of structural differentiation
carcinoma
malignant neoplasm of squamous epithelial cell origin
adenocarcinoma
malignant neoplasm derived from glandular tissue
sarcoma
malignant neoplasm with origin in mesenchymal tissues or its derivatives
lymphoma and leukemia
malignant neoplasms of hematopoietic tissues
melanoma
a type of cancer of pigment-producing cells (melanocytes) in the skin or eye (uveal melanoma)
blastoma
malignancies in precursor cells
teratoma
a germ cell neoplasm made of several different differentiated cell/tissue types
Is p53 an oncogene or tumor suppressor?
tumor suppressor
Is p16 an oncogene or tumor suppressor?
tumor suppressor
Is Ras an oncogene or tumor suppressor?
oncogene
Is Rbl an oncogene or tumor suppressor?
tumor suppressor
What is a limitation of phase-specific drugs?
number of cells in specific phase at that time
What are dose-limiting toxicities of chemotherapy?
-infections
-hemostasis
-anemia
-GI side effects
-N/V
-loss of appetite
What are mechanisms of drug resistance for chemotherapy?
-altered drug metabolism
-changes in drug target or function
-physiological changes
-cell survival mechanisms
How can drug metabolism be altered?
-increased transport of drugs out of cell through efflux pumps
-reduced transport into cell
-decreased activation of prodrug
-increased detoxification of drug molecule
How can drug target or function be changed?
-increased expression of drug target through gene amplification or expression
-emergence of structurally mutated target
-rewire pathway to bypass need for drug target
What are physiological changes that can lead to drug resistance for chemotherapy?
-refuge of cancer cells in drug-protected anatomical sites
-massive stromalization
-changes in cell state
What are cell survival mechanisms?
-activation of anti-apoptotic regulators
-increased repair of damage caused by chemotherapies
What is the suffix of androgen receptor antagonists?
-lutamide
What are the mechanisms of action of androgen receptor antagonists?
-prevent androgen receptor translocation to nucleus
-inhibits androgen receptor binding to DNA
What is the indication of androgen receptor antagonists?
metastatic and non-metastatic prostate cancer
What is the mechanism of action of abiraterone?
inhibits function of 17α-hydroylase and 17,20 lyase
What is the function of 17α-hydroylase and 17,20 lyase?
convert progestogens to androgens
What is a common side effect of abiraterone?
increased cholesterol
What type of drug is tamoxifen?
selective estrogen receptor modulator (SERM) prodrug
Does tamoxifen have agonist or antagonist activities?
agonist and antagonist
What are tamoxifen antagonist effects?
-blocks estrogen-dependent breast cancer cell proliferation
-hot flashes
What are tamoxifen agonist effects?
-increased incidence of endometrial cancer
-preservation of bone density in postmenopausal women
What population is tamoxifen effective in?
pre- and post-menopausal women
What are the indications for tamoxifen?
resected and metastatic ER+/PR+ breast cancer
What is the recommended duration of use for tamoxifen?
up to 5 years
What type of drug is fulvestrant?
selective estrogen receptor down-modulator (SERD)
Does fulvestrant have agonist or antagonist activities?
antagonist
What is the mechanism of action of fulvestrant?
binds to estrogen receptor and inhibits DNA binding –> rapid receptor degradation
What is the indication of fulvestrant?
ER+ metastatic breast cancer in postmenopausal women who have progressed on other anti-estrogen therapy
What is the route of administration of fulvestrant?
IM
What cancers do glucocorticoids have anti-cancer effects in?
-pediatric acute lymphoblastic leukemia
-multiple myeloma
-lymphoma
What are the most commonly used glucocorticoids in cancer treatment?
-methylprednisolone
-prednisolone
-dexamethasone
What is the suffix of non-steroidal aromatase inhibitors?
-trozole
Are non-steroidal aromatase inhibitors competitive or non-competitive?
competitive
What is the indication of non-steroidal aromatase inhibitors?
breast cancer in postmenopausal women
When should non-steroidal aromatase inhibitors be used in treatment?
first-line OR after 3-5 years of tamoxifen treatment
What is a side effect of non-steroidal aromatase inhibitors?
increased bone density loss
What are the two steroidal aromatase inhibitor drugs?
-exemestane
-androstenedione
What is the mechanism of action of exemestane?
-false substrate that aromatase converts to reactive intermediate
-intermediate binds irreversibly at active site and inactivates enzyme
What is the indication of exemestane?
ER+ breast cancer in postmenopausal women who have progressed on anti-estrogen therapy
What are side effects of exemestane?
-hot flashes
-occasional peripheral edema and weight gain
-increased cholesterol
What is the function of aromatase?
convert androgens to estrogens
What are two GnRH analogs?
-leuprolide
-goserelin
What are long-term side effects of GnRH analogs?
-hot flashes
-gynecomastia
-sexual dysfunction
What are the indications of GnRH analogs?
-premenopausal breast cancer
-palliative treatment of advanced prostate cancer
What is a clinical pearl of GnRH analogs?
temporary worsening of symptoms due to initial agonist effects
What drugs are given to premenopausal women with breast cancer?
-GnRH analogs
-tamoxifen
What drugs are given to postmenopausal women with breast cancer?
-tamoxifen
-aromatase inhibitors
-SERDs
What is the suffix of kinase inhibitors?
-nib
What is the mechanism of action of imatinib?
type II small molecule inhibitor of Abl tyrosine kinase
What is the mechanism of action of type II kinase inhibitors?
bind and stabilize inactive conformation of kinase
What is the indication of imatinib?
chronic myeloid leukemia (CML)
What are side effects of imatinib?
-N/V
-fluid retention and edema
-neutropenia and thrombocytopenia
What is the mechanism of action of ponatinib?
BCR-Abl inhibitor
What mutation can ponatinib inhibit that other BCR-Abl inhibitors cannot?
T315I
What is the mechanism of action of type I kinase inhibitors?
bind to active conformation of kinase
What type of FLT3 inhibitor is midostaurin?
first generation
Are first generation FLT3 inhibitors more broad or specific?
broad
What drugs are type I FLT3 inhibitors?
-midostaurin
-crenolanib
What is the indication of FLT3 inhibitors?
acute myeloid leukemia (AML)
What drug is a type II FLT3 inhibitor?
-quizartinib
What mutation are type II FLT3 inhibitors specific for?
internal tandem duplication (ITD)