PMID- 11246625 OWN - NLM STAT- MEDLINE DCOM- 20010510 LR - 20190906 IS - 0954-691X (Print) IS - 0954-691X (Linking) VI - 13 IP - 2 DP - 2001 Feb TI - A malignant gastrointestinal stromal tumour in a patient with multiple endocrine neoplasia type 1. PG - 207-11 AB - Loss of heterozygosity for polymorphic markers flanking the multiple endocrine neoplasia type 1 (MEN-1) gene in parathyroid and pancreatic islet tumours from subjects with MEN-1 has been well documented and has led to the hypothesis that the MEN-1 gene functions as a recessive tumour suppressor gene. We report a case of MEN-1 with duodeno-pancreatic gastrinoma, parathyroid hyperplasia, pituitary adenoma, adrenal adenoma, and lipomas, whose rare association with a malignant gastrointestinal stromal tumour (GIST) represents an undescribed combination. MEN-1 mutation in this family was shown as a frameshift (1607delA) in exon 10. To assess the role of the MEN-1 gene in the pathogenesis of tumours less commonly associated with MEN-1, we studied GIST DNA for loss of the unaffected MEN-1 gene allele. Stromal tumour and peripheral leucocyte DNAs from our patient were examined for loss of heterozygosity using the PYGM microsatellite polymorphism and an intragenic polymorphism (D418D in exon 9) in the MEN-1 gene. We showed no evidence for loss of the wild-type MEN-1 allele in GIST. The MEN-1 germline inactivating mutation 1607delA-ter558 in exon 10 was detected in the stromal tumour DNA, but no somatic mutation in the wild-type MEN-1 allele in GIST DNA was detected. Occurrence of GIST could be consistent with the possibility that this MEN-1-related uncommon neoplasm arose independently by a mechanism unrelated to the MEN-1 gene. FAU - Papillon, E AU - Papillon E AD - Departement d'Hepato-Gastro-Enterologie, Chu Grenoble, France. ARolachon@chu-grenoble.fr FAU - Rolachon, A AU - Rolachon A FAU - Calender, A AU - Calender A FAU - Chabre, O AU - Chabre O FAU - Barnoud, R AU - Barnoud R FAU - Fournet, J AU - Fournet J LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Gastroenterol Hepatol JT - European journal of gastroenterology & hepatology JID - 9000874 RN - 0 (DNA, Neoplasm) SB - IM MH - Adult MH - Chromosomes, Human, Pair 11 MH - DNA, Neoplasm/analysis MH - Gastrinoma/genetics/*pathology MH - Gastrointestinal Neoplasms/genetics/*pathology MH - Genes, Tumor Suppressor MH - Humans MH - Loss of Heterozygosity MH - Male MH - Multiple Endocrine Neoplasia Type 1/genetics/*pathology MH - Neoplasms, Multiple Primary/genetics/*pathology MH - Polymorphism, Genetic EDAT- 2001/03/15 10:00 MHDA- 2001/05/22 10:01 CRDT- 2001/03/15 10:00 PHST- 2001/03/15 10:00 [pubmed] PHST- 2001/05/22 10:01 [medline] PHST- 2001/03/15 10:00 [entrez] AID - 10.1097/00042737-200102000-00021 [doi] PST - ppublish SO - Eur J Gastroenterol Hepatol. 2001 Feb;13(2):207-11. doi: 10.1097/00042737-200102000-00021.