{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T00:57:43Z","timestamp":1792803463234,"version":"4.5.0"},"reference-count":68,"publisher":"BMJ","issue":"3","license":[{"start":{"date-parts":[[2022,7,20]],"date-time":"2022-07-20T00:00:00Z","timestamp":1658275200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81600002"],"award-info":[{"award-number":["81600002"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["J Med Genet"],"accepted":{"date-parts":[[2022,7,3]]},"published-print":{"date-parts":[[2023,3]]},"abstract":"<jats:sec>\n                  <jats:title>Background and objectives<\/jats:title>\n                  <jats:p>Cystic fibrosis (CF) is a heterogeneous disease with a diverse genetic spectrum among populations. Few patients with CF of Chinese origin have been reported worldwide. The objective of this study is to characterise the genotypic features of CF in Chinese children.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>We recruited and characterised the genetic manifestations of 103 Chinese children with CF in Beijing Children\u2019s Hospital from 2010 to 2022. Whole-exome sequencing were performed to define the genotypes. Meanwhile, other 99 genetically confirmed patients with Chinese origin described in 45 references were also summarised.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>158 different variants including 23 novel observations were identified after sequencing. The majority of <jats:italic>CFTR<\/jats:italic> variants (82.3%) in Chinese have been observed only once or twice. 43.7% of the variants were only identified in patients of Chinese origin. The c.2909G&gt;A(p.Gly970Asp), c.1766+5G&gt;T\u2009and c.1657C&gt;T(p.Arg553X) were the most frequent variants among Chinese patients, with allele frequency of 12.1%, 5.4% and 3.6%, respectively. The first two variants both showed significant Chinese ethnic tendency, while the latter one most likely came from Europeans for historical reasons. They also demonstrated significant differences in geographical distribution. c.1521_1523delCTT(p.F508del) was rarely observed in patients of pure Chinese origin, with an allele frequency of 1.8%. Two de novo variants (c.960dupA[p.Ser321IlefsX43] and c.2491-2A&gt;G) and two deep-intronic variants (c.3718\u20132477C&gt;T and c.3874-4522A&gt;G) were identified, which were also quite rare among Chinese.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>The genetic spectrum of CF in Chinese is unique and quite different from that observed in Caucasians. The geographical distributions of the most frequent variants were reported for the first time.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/jmg-2022-108501","type":"journal-article","created":{"date-parts":[[2022,7,20]],"date-time":"2022-07-20T13:20:20Z","timestamp":1658323220000},"page":"310-315","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":17,"title":["Genetic spectrum of Chinese children with cystic fibrosis: comprehensive data analysis from the main referral centre in China"],"prefix":"10.1136","volume":"60","author":[{"given":"Yuelin","family":"Shen","sequence":"first","affiliation":[{"name":"Department II of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, People's Republic of 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