Gastric cancer (GC) is one of the world's most common cancers. According to Lauren's histological classification gastric cancer is divided into two distinct histological groups - the intestinal and diffuse types. Several genetic changes have been identified in intestinal-type GC. The intestinal metaplasia is characterized by mutations in p53 gene, reduced expression of retinoic acid receptor beta (RAR-beta) and hTERT expression. Gastric adenomas furthermore display mutations in the APC gene, reduced p27 expression and cyclin E amplification. In addition, amplification and overexpression of c-ErbB2, reduced TGF-beta receptor type I (TGFBRI) expression and complete loss of p27 expression are commonly observed in more advanced GC. The main molecular changes observed in diffuse-type GCs include loss of E-cadherin function by mutations in CDH1and amplification of MET and FGFR2F.
Category
Cancer
Brite
Human diseases in ICD-11 classification [BR:br08403]
02 Neoplasms
Malignant neoplasms, except primary neoplasms of lymphoid, haematopoietic, central nervous system or related tissues
Malignant neoplasms, stated or presumed to be primary, of specified sites, except of lymphoid, haematopoietic, central nervous system or related tissues
Malignant neoplasms of digestive organs
2B72 Malignant neoplasms of stomach
H00018 Gastric cancer
Pathway-based classification of diseases [BR:br08402]
Replication and repair
nt06504 Base excision repair
H00018 Gastric cancer
Signal transduction
nt06526 MAPK signaling
H00018 Gastric cancer
nt06505 WNT signaling
H00018 Gastric cancer
Tumor markers [br08442.html]
H00018
Cancer-associated carbohydrates [br08441.html]
H00018
Colorectal cancer [DS:H00020] Solid tumor [DS:H02421]
Description
Familial adenomatous polyposis (FAP) is an autosomal dominantly inherited disorder characterized by the early onset of hundreds to thousands of adenomas throughout in the rectum and colon. If left untreated, all patients with FAP develop colon cancer a decade after the appearance of the polyps. The genetic defect in FAP is a germline mutation in the adenomatous polyposis coli (APC) gene. In a subset of individuals, a MUTYH mutation causes a recessively inherited polyposis condition.
Category
Neoplasm
Brite
Human diseases in ICD-11 classification [BR:br08403]
02 Neoplasms
Benign neoplasms, except of lymphoid, haematopoietic, central nervous system or related tissues
Benign non-mesenchymal neoplasms
2E92 Benign neoplasm of digestive organs
H01025 Familial adenomatous polyposis
Pathway-based classification of diseases [BR:br08402]
Replication and repair
nt06504 Base excision repair
H01025 Familial adenomatous polyposis
nt06503 Mismatch repair
H01025 Familial adenomatous polyposis
Cellular process
nt06541 Cytoskeleton in neurons
H01025 Familial adenomatous polyposis