Alternative definition : KEGG: Bladder cancers arise and progress along two distinctive pathways. The first
of these is often preceded by simple and papillary hyperplasia and exhibits a tumour
morphology that is low-grade, superficial and papillary. Papillary carcinoma has a
tendency to recur locally, but rarely invades and metastasizes. These tumors frequently
show a constitutive activation of the receptor tyrosine kinase-Ras pathway, exhibiting
activating mutations in the HRAS and fibroblast growth factor receptor 3 (FGFR3) genes.
The second tumour pathway is characterized by high-grade muscle-invasive tumours,
which either originate from flat carcinoma in situ (CIS)/severe dysplasia or arise
de novo. Over half of these tumours show defects in the tumour suppressors p53 and/or
the retinoblastoma protein (RB) genes and pathways, and over 50% of these tumours
progress to local and distant metastases. Some of the cell cycle-related molecules
show evidence of epigenetic modulation through aberrant promoter hypermethylation
in invasive bladder cancer. Invasion and metastases are promoted by several factors
that alter the tumour microenvironment, including the aberrant expression of E-cadherins
(E-cad), matrix metalloproteinases (MMPs), angiogenic factors such as vascular endothelial
growth factor (VEGF).;
https://www.cochrane.org/fr/CD013774/PROSTATE_limmunotherapie-par-rapport-la-chimiotherapie-pour-le-traitement-du-cancer-de-la-vessie-inoperable 2023 United Kingdom review of literature french abstract urinary bladder cancer Metastatic Malignant Neoplasm urinary bladder neoplasms chemotherapy, nos chemotherapy Cancer Immunotherapy Childhood Bladder Carcinoma Drug Therapy albumin/globulin ratio research report immunotherapy for cancer immunotherapy Bladder Cancer Pathway Ratio Cancer Therapeutic Procedure Succimer Regulatory Report malignant neoplasm of bladder