Breast cancer is the leading cause of cancer death among women worldwide. The vast majority of breast cancers are carcinomas that originate from cells lining the milk-forming ducts of the mammary gland. The molecular subtypes of breast cancer, which are based on the presence or absence of hormone receptors (estrogen and progesterone subtypes) and human epidermal growth factor receptor-2 (HER2), include: hormone receptor positive and HER2 negative (luminal A subtype), hormone receptor positive and HER2 positive (luminal B subtype), hormone receptor negative and HER2 positive (HER2 positive), and hormone receptor negative and HER2 negative (basal-like or triple-negative breast cancers (TNBCs)). Hormone receptor positive breast cancers are largely driven by the estrogen/ER pathway. In HER2 positive breast tumours, HER2 activates the PI3K/AKT and the RAS/RAF/MAPK pathways, and stimulate cell growth, survival and differentiation. In patients suffering from TNBC, the deregulation of various signalling pathways (Notch and Wnt/beta-catenin), EGFR protein have been confirmed. In the case of breast cancer only 8% of all cancers are hereditary, a phenomenon linked to genetic changes in BRCA1 or BRCA2. Somatic mutations in only three genes (TP53, PIK3CA and GATA3) occurred at >10% incidence across all breast cancers.
Category
Cancer
Brite
Human diseases [BR:br08402]
Cancers
Cancers of the breast and female genital organs
H00031 Breast cancer
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 breast
2C61 Invasive carcinoma of breast
H00031 Breast cancer
Tumor markers [br08442.html]
H00031
Cancer-associated carbohydrates [br08441.html]
H00031
Pathway
hsa05224
Breast cancer
Related pathway
hsa03440
Homologous recombination
hsa03460
Fanconi anemia pathway
hsa04151
PI3K-Akt signaling pathway
Network
nt06270 Breast cancer nt06506 Double-strand break repair nt06508 Interstrand crosslink repair
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Title
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Journal
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Reference
PMID:9425226 (BARD1)
Authors
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Title
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Reference
PMID:23000897 (TP53, PIK3CA, GATA3)
Title
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Journal
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Reference
PMID:21203526 (RB1CC1, TP53)
Authors
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Reference
PMID:32231069 (HMMR)
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Title
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Journal
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Reference
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Reference
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Authors
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Title
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Journal
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Authors
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Title
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Journal
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Reference
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Authors
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Title
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Journal
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Reference
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Authors
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Title
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