This is an observational study, called a registry, for people with gastric (stomach) cancer, those with a family history of gastric cancer, or individuals with a known change in their CDH1 (E-Cadherin) gene. The study aims to collect detailed health and lifestyle information, along with genomic data from saliva, blood, and tissue samples. By combining this information, researchers hope to better understand what causes gastric cancer, both environmental and genetic, and if certain genetic information can predict how well treatments work and how long people live. The study is open to adults aged 18 and older who have adequate English proficiency. The current recruitment status is unclear.

Study design

This is an observational study, not testing a specific treatment, and plans to enroll 500 participants. It is a registry designed to collect information over time.

What's involved

You would complete an online consent form and a detailed online questionnaire. You can also choose to provide a saliva or blood sample, and tissue samples from a past surgery.

Compensation

Not stated in the trial record.

Follow-up

The primary goal is to collect information at one day, but the registry aims to understand outcomes over time.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.