{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T10:55:26Z","timestamp":1782212126449,"version":"3.54.5"},"reference-count":21,"publisher":"The Endocrine Society","issue":"5","license":[{"start":{"date-parts":[[2017,3,23]],"date-time":"2017-03-23T00:00:00Z","timestamp":1490227200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/publicdomain\/zero\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Context:<\/jats:title>\n                  <jats:p>Germline gain-of-function variants in the transcription factor GCM2 were found in 18% of kindreds with familial isolated hyperparathyroidism (FIHP). These variants [c.1136T&amp;gt;A (p.Leu379Gln) and c.1181A&amp;gt;C (p.Tyr394Ser)] were located in a 17-amino acid transcriptional inhibitory domain named C-terminal conserved inhibitory domain (CCID).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective:<\/jats:title>\n                  <jats:p>We investigated the ethnicity of individuals with germline variants in the GCM2 CCID in our primary hyperparathyroidism (PHPT) patient samples and in the Genome Aggregation Database.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Design:<\/jats:title>\n                  <jats:p>Ethnicity information was obtained from an in-house clinical database and genetic counseling. Sanger sequencing of blood DNA was used to determine the genotype of the GCM2 CCID region. Luciferase reporter assays were performed to determine the functional impact of GCM2 variants.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Setting and Patients:<\/jats:title>\n                  <jats:p>National Institute of Diabetes and Digestive and Kidney Diseases endocrine clinic is a service that accepts PHPT referral patients.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results:<\/jats:title>\n                  <jats:p>The GCM2 p.Tyr394Ser variant was found in 41% [95% confidence interval (CI), 22% to 64%] of Ashkenazi Jewish (AJ) kindreds with FIHP and in 27% (95% CI, 17% to 40%) of AJ patients with sporadic PHPT. The p.Tyr394Ser variant was also found in sporadic PHPT patients of European ancestry, but at a lower prevalence. The p.Leu379Gln variant was found in 8% (95% CI, 1% to 26%) of European kindreds with FIHP and 0.5% (95% CI, 0% to 3.0%) of sporadic PHPT cases of European ancestry. The sporadic PHPT patients with GCM2-activating variants often had multigland involvement or postoperative recurrent or persistent disease.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions:<\/jats:title>\n                  <jats:p>Specific GCM2-activating variants enriched among various ethnic backgrounds could contribute to a large number of cases with FIHP or sporadic PHPT.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1210\/js.2017-00043","type":"journal-article","created":{"date-parts":[[2017,5,5]],"date-time":"2017-05-05T15:43:05Z","timestamp":1493998985000},"page":"488-499","source":"Crossref","is-referenced-by-count":33,"title":["Ethnicity of Patients With Germline GCM2-Activating Variants and Primary Hyperparathyroidism"],"prefix":"10.1210","volume":"1","author":[{"given":"Bin","family":"Guan","sequence":"first","affiliation":[{"name":"The National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James M.","family":"Welch","sequence":"additional","affiliation":[{"name":"The National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meghana","family":"Vemulapalli","sequence":"additional","affiliation":[{"name":"The National Human Genome Research Institute, Bethesda, Maryland 20892"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yulong","family":"Li","sequence":"additional","affiliation":[{"name":"The National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hua","family":"Ling","sequence":"additional","affiliation":[{"name":"The Center for Inherited Disease Research, Johns Hopkins University, Baltimore, Maryland 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