PMID- 9024241 OWN - NLM STAT- MEDLINE DCOM- 19970311 LR - 20101118 IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 82 IP - 2 DP - 1997 Feb TI - A kindred with a variant of multiple endocrine neoplasia type 1 demonstrating frequent expression of pituitary tumors but not linked to the multiple endocrine neoplasia type 1 locus at chromosome region 11q13. PG - 486-92 AB - Acromegaly is uncommon in kindreds with multiple endocrine neoplasia type 1 (MEN1), whereas primary hyperparathyroidism (PHP) has the highest penetrance of any endocrinopathy. We report an unusual MEN1 kindred with frequent expression of pituitary tumors and a low penetrance of PHP. Four members were found to have disease: PHP in generation I, acromegaly (2 cases) in generation II, and hyperprolactinemia associated with a pituitary tumor in generation III. There was no evidence for PHP in 1 patient with acromegaly (age 60 yr), the patient with hyperprolactinemia and the pituitary tumor (age 22 yr), and 1 asymptomatic obligate carrier (age 50 yr). Screening of 26 members revealed the possible diagnosis of PHP in 1 family member in generation II and possible early acromegaly in 2 members of generation III with elevated serum concentrations of insulin-like growth factor I and insulin-like growth factor-binding protein-3 but normal patterns of pulsatile GH release. Although the predisposing genetic defect in typical MEN1 families has previously been mapped to chromosome location 11q13 without evidence of heterogeneity among the 87 families analyzed, linkage of disease in this family to the MEN1 region is unlikely based on haplotype analysis. Localization of the gene(s) responsible for disease in such atypical families may aid in the understanding of the pathogenesis of MEN1. In addition, further study of the earliest changes in patterns of pulsatile GH release in familial acromegaly may allow more insight into the pathogenesis and natural history of this disease. FAU - Stock, J L AU - Stock JL AD - Endocrinology Laboratory, University of Massachusetts Medical School, Worcester 01605, USA. FAU - Warth, M R AU - Warth MR FAU - Teh, B T AU - Teh BT FAU - Coderre, J A AU - Coderre JA FAU - Overdorf, J H AU - Overdorf JH FAU - Baumann, G AU - Baumann G FAU - Hintz, R L AU - Hintz RL FAU - Hartman, M L AU - Hartman ML FAU - Seizinger, B R AU - Seizinger BR FAU - Larsson, C AU - Larsson C FAU - Aronin, N AU - Aronin N LA - eng GR - DK-38128/DK/NIDDK NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 SB - IM MH - Acromegaly/genetics MH - Aged MH - Aged, 80 and over MH - *Chromosome Mapping MH - *Chromosomes, Human, Pair 11 MH - Female MH - Genetic Linkage MH - Humans MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*genetics MH - Pedigree MH - Pituitary Neoplasms/*genetics EDAT- 1997/02/01 00:00 MHDA- 1997/02/01 00:01 CRDT- 1997/02/01 00:00 PHST- 1997/02/01 00:00 [pubmed] PHST- 1997/02/01 00:01 [medline] PHST- 1997/02/01 00:00 [entrez] AID - 10.1210/jcem.82.2.3730 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 1997 Feb;82(2):486-92. doi: 10.1210/jcem.82.2.3730.