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Definition of MADH4

MADH4: A tumor suppressor gene (also known as SMAD4/DPC4) located on chromosome 18 in band 18q21 1. About 15% to 20% of cases of juvenile polyposis are due to germline mutations in MADH4. About 90% of pancreatic carcinomas show homozgous loss (loss of both copies) of MADH4.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012

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