Fibroblast growth factor receptor 3 gene (FGFR3) mutations in high-grade muscle-invasive urothelial bladder cancer in a Brazilian population: evaluation and prevalence.
Einstein (Sao Paulo)
; 20: eAO6450, 2022.
Article
in En
| MEDLINE
| ID: mdl-35384983
ABSTRACT
OBJECTIVE:
To understand the feasibility of FGFR3 tests in the Brazilian public health context, and to sample the mutational burden of this receptor in high-grade muscle invasive bladder cancer.METHODS:
A total of 31 patients with high-grade muscle-invasive bladder cancer were included in the present study. Either transurethral resection of bladder tumor or radical cystectomy specimens were analyzed. Formalin-fixed paraffin-embedded tissue blocks were sectioned, hematoxylin and eosin stained, and histologic sections were reviewed. Total RNA was extracted using the RNeasy DSP formalin-fixed paraffin-embedded kit. Qualitative results were displayed in Rotor-Gene AssayManager software.RESULTS:
Six patients were excluded. From the samples analyzed, four (16.7%) were considered inadequate and could not have their RNA extracted. Two patients presented FGFR3 mutations, accounting for 9.5% of material available for adequate analysis. The two mutations detected included a Y373C mutation in a male patient and a S249C mutation in a female patient.CONCLUSION:
FGFR3 mutations could be analyzed in 84% of our cohort and occurred in 9.5% of patients with high-grade muscle invasive bladder cancer in this Brazilian population. FGFR3 gene mutations are targets for therapeutic drugs in muscle-invasive bladder cancer. For this reason, know the frequency of these mutations can have a significant impact on public health policies and costs provisioning.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Urinary Bladder Neoplasms
/
Carcinoma, Transitional Cell
/
Receptor, Fibroblast Growth Factor, Type 3
Type of study:
Prevalence_studies
/
Qualitative_research
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Male
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Einstein (Sao Paulo)
Year:
2022
Document type:
Article
Affiliation country: