Causes of tumors (genes, microbes, carcinogens) Flashcards
ALK
Oncogene
Gene product: receptor tyrosine kinase
Associated neoplasm: Lung Adenocarcinoma
BCR-ABL
Oncogene
Gene product: Tyrosine kinase
Associated neoplasm: CML, ALL
BCL-2
Oncogene
Gene product: anti-apoptotic molecule
Associated neoplasm: Follicular lymphoma, Diffuse B cell Lymphoma
BRAF
Oncogene
Gene product: seronine/threonine kinase
Associated neoplasm: Melanoma, Non-hodgkin lymphoma, papillary thyroid carcinoma
c-KIT
Oncogene
Gene product: cytokine receptor
Associated neoplasm: GIST (gastrointestinal stromal tumor)
c-MYC
Oncogene
Gene product: transcription factor
Associated neoplasm: burkitt lymphoma
HER2/neu
Oncogene
Gene product: receptor tyrosine kinase
Associated neoplasm: breast and gastric carcinoma
JAK2
Oncogene
Gene product: tyrosine kinase
Associated neoplasm: chronic myeloproliferative disorders
KRAS
Oncogene
Gene product: GTPase
Associated neoplasm: Colon cancer, lung cancer, pancreatic cancer
MYCL1
Oncogene
Gene product: transcription factor
Associated neoplasm: Lung cancer
N-myc (MYCN)
Oncogene
Gene product: transcription factor
Associated neoplasm: Neuroblastoma
RET
Oncogene
Gene product: receptor tyrosine kinase
Associated neoplasm: MEN2A, 2B, papillary thyroid carcinoma
APC
Tumor suppressor
Gene product: negative regulator of B-catenin/WNT pathway
Associated neoplasm: Colorectal cancer (Associated with FAP)
BRCA1/BRCA2
Tumor suppressor
Gene product: DNA repair protein
Associated neoplasm: breast, ovarian, and pancreatic cancer
CDKN2A
Tumor suppressor
Gene product: p16, blocks G1–>S phase
Associated neoplasm: Melanoma, pancreatic cancer
(CDKN looks like SKIN)
DCC
Tumor suppressor
Gene product: DCC
Associated neoplasm: colon cancer
(Deleted in Colon Cancer)
SMAD4 (DPC4)
Tumor suppressor
Gene product: DPC
Associated neoplasm: pancreatic cancer
(Deleted in Pancreatic Cancer)
MEN1
Tumor suppressor
Gene product: menin
Associated neoplasm: multiple endocrine neoplasia 1
NF1
Tumor suppressor
Gene product: neurofibrinomin (Ras GTPase activating protein)
Associated neoplasm: neurofibromatosis 1
NF2
Tumor suppressor
Gene product: merlin (schwannomin) protein
Associated neoplasm: Neurofibromatosis 2
PTEN
Tumor suppressor
Gene product: Negatively regulates p13k/AKT pathway
Associated neoplasm: Breast, prostate, endometrial cancer
Rb
Tumor suppressor
Gene product: Inhibits E2F - blocks G1–>S phase
Associated neoplasm: retinoblastoma, osteosarcoma
TP53
Tumor suppressor
Gene product: p53 - activates p21, blocks G1–>S phase
Associated neoplasm: most human cancers
Li-fraumeni syndrome (AKA SBLA) - sarcoma, breast, leukemia, adrenal gland
TSC1
Tumor suppressor
Gene product: Hamartin protein
Associated neoplasm:Tuberous sclerosis
TSC2
Tumor suppressor
Gene product: Tuberin
Associated neoplasm: Tuberous Sclerosis
VHL
Tumor suppressor
Gene product: Inhibits HIF1 (hypoxia inducible factor 1)
Associated neoplasm: von hippel-lindau disease
WT1
Tumor suppressor
Gene product: Transcription factor that regulates urogenital development
Associated neoplasm: Wilms tumor (nephroblastoma)
Oncogenic Microbes: EBV
Burkitt lymphoma, Hodgkin lymphoma, nasopharyngeal carcinoma, primary CNS lymphoma (immunocompromised patient)
Oncogenic Microbes: HBV, HCV
hepatocellular carcinoma
Oncogenic Microbes: HHV-8
Karposia sarcoma
Oncogenic Microbes: HPV
Cervical, penile, and anal carcinoma (type 16 and 18)
Head and neck cancer
Oncogenic Microbes: H pylori
Gastric adenocarcinoma, MALT lymphoma
Oncogenic Microbes: HTLV-1
Adult T-cell leukemia/lymphoma
Oncogenic Microbes: Liver fluke (clonorchis sinensis)
Cholangiocarinoma
Oncogenic Microbes: Schistosoma Haematobium
Bladder cancer (squamous cell)
Carcinogens: Alfatoxins
Exposure: grains and nuts
Organ affected: liver
Impact: Hepatocellular carcinoma
Carcinogens: Alkylating agents
Exposure: chemotherapy
Organ effected: blood
Impact: leukemia, lymhoma
Carcinogens: aromatic amines (benzidine, 2-naphthylamine)
Exposure: textile industry (dyes), cigarette smoke (2-naphthylamine)
Organ effected: bladder
Impact: transitional cell carcinoma
Carcinogens: Arsenic
Exposure: herbicides (vineyard workers), metal smelting Impact Liver --> angiosarcoma Lung --> Lung cancer Skin --> Squamous cell carcinoma
Carcinogens: Asbestos
Exposure: old roofing material, shipyards
Organ effected: lung
Impact: bronchogenic carcinoma > mesothelioma
Carcinogens: Cigarette Smoke
Bladder--> transitional cell carcinoma Cervix --> SCC Esophagus --> SCC, adenocarcinoma Kidney --> RCC Larynx--> SCC Lung --> SCC, SCLC Pancreas --> pancreatic adenocarcinoma
Carcinogens: Ethanol
Esophagus–> SCC
Liver –> HCC
Carcinogens: ionizing radiation
Thyroid –> papillary thyroid carcinoma
Carcinogens: Nitrosamines
Exposure: Smoked foods
Organ effected: stomach
Impact: gastric adenocarcinoma (intestinal type)
Carcinogens: radon
Exposure: byproduct of uranium decay, accumulates in basements
Organ effected: lung
Impact: second leading cause of lung cancer
Carcinogens: vinyl chloride
Exposure: used to make PVC pipes (plumbers)
Organ effected: liver
Impact: angiosarcoma