{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T18:21:16Z","timestamp":1790187676248,"version":"4.1.0"},"reference-count":35,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2020,9,21]],"date-time":"2020-09-21T00:00:00Z","timestamp":1600646400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006606","name":"Natural Science Foundation of Tianjin City","doi-asserted-by":"publisher","award":["16JCQNJC11900"],"award-info":[{"award-number":["16JCQNJC11900"]}],"id":[{"id":"10.13039\/501100006606","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81771589"],"award-info":[{"award-number":["81771589"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Molec Gen &amp;amp; Gen Med"],"published-print":{"date-parts":[[2020,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      21\u2010Hydroxylase deficiency (21\u2010OHD) caused by the\n                      <jats:italic>CYP21A2<\/jats:italic>\n                      gene mutations is the most common form of congenital adrenal hyperplasia. It is an autosomal recessive disorder that results in defective synthesis of cortisol and aldosterone. The incidences of various\n                      <jats:italic>CYP21A2<\/jats:italic>\n                      gene mutations and the genotype\u2013phenotype correlations vary among different populations.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>The clinical and molecular data of 22 patients were analyzed in this study. All patients were recruited from the neonatal intensive care unit. Locus\u2010specific polymerase chain reaction and Sanger sequencing were applied to identify gene micro\u2010conversions, and multiplex ligation\u2010dependent probe amplification was used to detect large fragment deletions\/conversions. Then, the genotypes were categorized in to Null, A, B, C, and D groups to analyze the relationships between genotypes and phenotypes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>All 22 patients were classified into classic salt wasting form of 21\u2010OHD. Molecular defects were detected in 44 alleles (100%). Micro\u2010conversion mutation IVS2\u201013A\/C&gt;G (70.5%) is most common in our cohort, followed by large gene deletions and conversions (22.7%). The other mutations present were p.R357 W (4.5%) and E6 Cluster (2.3%). Genotypes of 22 patients (100%) were consistent with the predictive phenotypes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>\n                      In this study, we identified the mutation spectrum of\n                      <jats:italic>CYP21A2<\/jats:italic>\n                      gene in Chinese patients, especially the younger age cohort in pediatrics. Micro\u2010conversions were the most popular mutations. Moreover, the genotypes and phenotypes were well correlated in this cohort of salt wasting 21\u2010OHD recruited from neonatal intensive care unit.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/mgg3.1501","type":"journal-article","created":{"date-parts":[[2020,9,21]],"date-time":"2020-09-21T20:52:24Z","timestamp":1600721544000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["The spectrum of\n                    <i>CYP21A2<\/i>\n                    gene mutations in patients with classic salt wasting form of 2l\u2010hydroxylase deficiency in a Chinese cohort"],"prefix":"10.1002","volume":"8","author":[{"given":"Yang","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Neonatology Tianjin Children\u2019s Hospital the Pediatric Clinical College in Tianjin Medical University Tianjin 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