Zufallsbefund einer attenuierten familiären adenomatösen polyposis (AFAP)

Translated title of the contribution: A case of attenuated familial adenomatous polyposis coli (AFAP)

Bernhard Gentner, C. Kraus, D. Schwab, J. Benninger, A. Wein, E. G. Hahn, W. M. Brueckl

Research output: Contribution to journalArticlepeer-review


We describe an asymptomatic female patient who was diagnosed with multiple tubular and tubulovillous adenomas in the right-sided colon on routine colonoscopy at the age of 59 years. Genetic testing identified a germline truncating mutation at codon 405 (R405X) of the adenomatous polyposis coli (APC) gene. This mutation is located in the alternatively spliced region of exon 9, a region that is associated with an attenuated phenotype of familial adenomatous polyposis (AFAP). To our knowledge this report describes for the first time the R405X germline mutation in association with AFAP. Our patient had no extracolonic manifestations of AFAP. Treatment consisted of a right hemicolectomy with ileotransversal anastomosis plus complete endoscopic polypectomy in the left-sided colon. AFAP is a poorly defined condition with unknown prevalence and penetrance that requires individual therapy and life-long surveillance. Because of marked intrafamilial phenotypic variance, it is crucial to identify these patients and implement proper endoscopic surveillance at an early age in family members carrying this mutation.

Translated title of the contributionA case of attenuated familial adenomatous polyposis coli (AFAP)
Original languageGerman
Pages (from-to)591-595
Number of pages5
JournalZeitschrift fur Gastroenterologie
Issue number6
Publication statusPublished - Jun 2005


  • Adenomatous polyposis coli (APC) gene
  • Attenuated familial adenomatous polyposis (AFAP)
  • Colorectal adenoma
  • Familial adenomatous polyposis (FAP)

ASJC Scopus subject areas

  • Gastroenterology


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