Detection and characterization of germline mutations in cancer susceptibility genes in patients diagnosed with endometrial cancer and mismatch repair DNA system deficiency

• Grant number: 17/04283-8
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2017
• End date: June 30, 2019
• Field of knowledge: Biological Sciences - Genetics - Human and Medical Genetics
• Principal Investigator: Victor Evangelista de Faria Ferraz
• Grantee: Victor Evangelista de Faria Ferraz
• Host Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
• Associated researchers: Alfredo Ribeiro da Silva ; Fernando Chahud ; Wilson Araújo da Silva Junior ; Wilson Marques Junior

Abstract

Endometrial cancer (EC) is the most common neoplasm of the female reproductive tract. About ninety percent of cases of this type of cancer are sporadic and the remaining ten percent are associated with genetic factors. Some syndromes of cancer hereditary predisposition have CE in their spectrum of possible neoplasias. One of them, Lynch Syndrome (LS), is responsible for many cases of hereditary EC and its molecular diagnosis consists of the identification of DNA mismatch repair (MMR) deficient tumors and subsequent detection of pathogenic mutations in one of the main genes related to this system: MLH1, MSH2, MSH6 and PMS2. Seventy percent of all MMR deficient EC do not have pathogenic mutations in these genes and are diagnosed as Lynch-Like Syndrome (LLS) because they do not have an established molecular diagnosis. The presence of pathogenic mutations in genes related to other syndromes with phenotypic overlapping to SL may explain some cases diagnosed with LLS. With the advent of massive parallel sequencing technologies, the use of panels with multiple cancer susceptibility genes can provide a differential diagnosis of a portion of cases diagnosed with LLS. It results in adequate genetic management and counseling of individuals and their respective relatives at risk for a specific cancer predisposition syndrome. Thus, the objective of this project to establish molecular diagnosis of syndromes of cancer hereditary predisposition in a series of EC cases with MMR deficiency, from Ribeirão Preto Clinics Hospital using a panel with cancer susceptibility genes. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALVES ROSA, REGINALDO CRUZ; SANTIS, JESSICA OLIVEIRA; TEIXEIRA, LORENA ALVES; MOLFETTA, GREICE ANDREOTTI; TARGINO DOS SANTOS, JENNIFER THALITA; RIBEIRO, VANESSA DOS SANTOS; CHAHUD, FERNANDO; RIBEIRO-SILVA, ALFREDO; BRUNALDI, MARIANGELA OTTOBONI; SILVA JR, WILSON ARAUJO; et al. Lynch syndrome identification in a Brazilian cohort of endometrial cancer screened by a universal approach. GYNECOLOGIC ONCOLOGY, v. 159, n. 1, p. 10-pg., 2020-10-01. (17/04283-8)

ALVES ROSA, REGINALDO CRUZ; YURCHENKO, ANDREY A.; CHAHUD, FERNANDO; RIBEIRO-SILVA, ALFREDO; BRUNALDI, MARIANGELA OTTOBONI; SILVA JR, WILSON ARAUJO; KANNOUCHE, PATRICIA L.; NIKOLAEV, SERGEY; DE FARIA FERRAZ, VICTOR EVANGELISTA. First description of ultramutated endometrial cancer caused by germline loss-of-function and somatic exonuclease domain mutations in POLE gene. GENETICS AND MOLECULAR BIOLOGY, v. 43, n. 4, p. 8-pg., 2020-01-01. (17/04283-8)