PMID- 16322378 OWN - NLM STAT- MEDLINE DCOM- 20060209 LR - 20161018 IS - 0804-4643 (Print) IS - 0804-4643 (Linking) VI - 153 IP - 6 DP - 2005 Dec TI - Acromegaly in a multiple endocrine neoplasia type 1 (MEN1) family with low penetrance of the disease. PG - 741-6 AB - Multiple endocrine neoplasia type 1 (MEN1) is an inherited syndrome that is characterised by the occurrence of tumours in the parathyroid glands, the endocrine pancreas, the pituitary gland and the adrenal glands and by neuroendocrine carcinoid tumours, often at a young age. The penetrance of MEN1 among gene carriers is reported to be high; 82-99% at age 50. We present a patient with a history of parathyroid adenomas also showing signs of acromegaly. He turned out to be a carrier of a MEN1 germ-line mutation in intron 3 (IVS3-6C > G). This germ-line mutation was also found in nine of his family members. However, none of these relatives have developed any MEN1-related lesion yet, although several are older than 60 years. To our knowledge, a MEN1 family with as few clinical features as this family has not been reported to date. Because MEN1 patients have an increased risk of developing acromegaly, insulin-like growth factor (IGF-I) levels are monitored periodically. We investigated whether IGF-I levels might serve as a presymptomatic marker for acromegaly; 9% (3/33) of MEN1 patients showed temporary IGF-I elevations. One patient (1/3) later developed clinical signs of acromegaly. Possibly, acromegaly in MEN1 is preceded by a transient preacromegalic state. FAU - Dreijerink, Koen M A AU - Dreijerink KM AD - Department of Endocrinology, University Medical Centre Utrecht, PO Box 85.500, 3508 GA, Utrecht, The Netherlands. FAU - van Beek, Andre P AU - van Beek AP FAU - Lentjes, Eef G W M AU - Lentjes EG FAU - Post, Jan G AU - Post JG FAU - van der Luijt, Rob B AU - van der Luijt RB FAU - Canninga-van Dijk, Marijke R AU - Canninga-van Dijk MR FAU - Lips, Cornelis J M AU - Lips CJ LA - eng PT - Case Reports PT - Journal Article PL - England TA - Eur J Endocrinol JT - European journal of endocrinology JID - 9423848 RN - 67763-96-6 (Insulin-Like Growth Factor I) SB - IM MH - Acromegaly/blood/*etiology/therapy MH - Adenoma/genetics MH - DNA Mutational Analysis MH - Germ-Line Mutation MH - Growth Hormone-Secreting Pituitary Adenoma/genetics MH - Humans MH - Insulin-Like Growth Factor I/analysis MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/blood/*diagnosis/*genetics MH - Parathyroid Neoplasms/genetics MH - Pedigree MH - *Penetrance EDAT- 2005/12/03 09:00 MHDA- 2006/02/10 09:00 CRDT- 2005/12/03 09:00 PHST- 2005/12/03 09:00 [pubmed] PHST- 2006/02/10 09:00 [medline] PHST- 2005/12/03 09:00 [entrez] AID - 153/6/741 [pii] AID - 10.1530/eje.1.02022 [doi] PST - ppublish SO - Eur J Endocrinol. 2005 Dec;153(6):741-6. doi: 10.1530/eje.1.02022.