Somatic alterations in juvenile polyps from BMPR1A and SMAD4 mutation carriers.

Abstract excerpt

Juvenile polyposis syndrome (JPS) is a rare autosomal dominant disorder predisposing to gastrointestinal hamartomatous polyps and cancer with a pathogenic SMAD4 or BMPR1A germline mutation (1st-hit) being identified in about 40-50% of patients. Little is known, however, about the occurrence and nature of somatic alterations (2nd-hit) in SMAD4-/BMPR1A-related juvenile polyps. In this study, we screened 25 polyps...

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