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Spots Global Cancer Trial Database for Liquid Biopsies for the Personalized Management of Patients With Hereditary Diffuse Gastric Cancer

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Trial Identification

Brief Title: Liquid Biopsies for the Personalized Management of Patients With Hereditary Diffuse Gastric Cancer

Official Title: Liquid Biopsies (Blood, Gastric Fluid) for the Personalized Management of Patients With Hereditary Diffuse Gastric Cancer: a Pilot Project

Study ID: NCT04253106

Study Description

Brief Summary: Activating somatic mutations and methylation profiles identified by liquid biopsies could identify CDH1 and CTNNA1 pathogenic variants carriers with invasive diffuse gastric cancer undetectable by upper G-I endoscopy.

Detailed Description: Carriers of germline pathogenic variants in the CDH1 and CTNNA1 genes have the Hereditary Diffuse Gastric Cancer Syndrome. Asymptomatic carriers have at high lifetime risk of diffuse gastric cancer (30-70%). Screening upper gastrointestinal endoscopy, even with multiple random biopsies, misses signet ring cell cancer foci. Invasive cancers can thus go undetected. There is therefore a recommendation of total risk-reducing gastrectomy, at least in carriers with a family history of gastric cancer. Novel screening strategies are needed. In this pilot project, the investigators will perform liquid biopsies of both blood and gastric fluid in asymptomatic carriers who refuse gastrectomy and in controls. The investigators aim to show that somatic mutations in a panel of genes involved in gastric cancer and methylation profiles are detected in a subset of carriers, and not in controls. These could be indicative of invasive cancer undetected by endoscopy, and would thus be a strong argument for risk-reducing gastrectomy. On the contrary, in the absence of somatic mutations in liquid biopsies, endoscopic surveillance could continue.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Hopital Pitié Salpetrière, Paris, , France

Contact Details

Useful links and downloads for this trial

Clinicaltrials.gov

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