{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T23:26:57Z","timestamp":1777678017115,"version":"3.51.4"},"reference-count":29,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,3,5]],"date-time":"2024-03-05T00:00:00Z","timestamp":1709596800000},"content-version":"vor","delay-in-days":4,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Molec Gen &amp;amp; Gen Med"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The <jats:italic>MYH3<\/jats:italic>\u2010associated myosinopathies comprise a spectrum of rare neuromuscular disorders mainly characterized by distal arthrogryposis with or without other features like pterygia and vertebrae fusion. CPSKF1B (contractures, pterygia, and spondylocarpotarsal fusion syndrome1B) is the only known autosomal recessive<jats:italic>MYH3<\/jats:italic>\u2010associated myosinopathy so far, with no more than two dozen cases being reported.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>A boy with CPSKF1B was recruited and subjected to a comprehensive clinical and imaging evaluation. Genetic detection with whole\u2010exome sequencing (WES) was performed on the patient and extended family members to identify the causative variation. A series of in silico and in\u00a0vitro investigations were carried out to verify the pathogenicity of the two variants of the identified compound heterozygous variation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The patient exhibited moderate CPSKF1B symptoms including multiarticular contractures, webbed neck, and spondylocarpotarsal fusion. WES detected a compound heterozygous <jats:italic>MYH3<\/jats:italic> variation consisting of two variants, namely NM_002470.4: c.3377A&gt;G; p. (E1126G) and NM_002470.4: c.5161\u20102A&gt;C. It was indicated that the NM_002470.4: c.3377A&gt;G; p. (E1126G) variant mainly impaired the local hydrogen bond formation and impacted the TGF\u2010B pathway, while the NM_002470.4: c.5161\u20102A&gt;C variant could affect the normal splicing of pre\u2010mRNA, resulting in the appearance of multiple abnormal transcripts.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The findings of this study expanded the mutation spectrum of CPSKF1B, provided an important basis for the counseling of the affected family, and also laid a foundation for the functional study of <jats:italic>MYH3<\/jats:italic> mutations.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mgg3.2401","type":"journal-article","created":{"date-parts":[[2024,3,6]],"date-time":"2024-03-06T07:35:34Z","timestamp":1709710534000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Functional assessment of a novel biallelic <i>MYH3<\/i> variation causing CPSKF1B (contractures, pterygia, and spondylocarpotarsal fusion syndrome1B)"],"prefix":"10.1002","volume":"12","author":[{"given":"Qing\u2010bing","family":"He","sequence":"first","affiliation":[{"name":"Department of Pediatric Orthopaedics The Third Hospital of Hebei Medical University  Shijiazhuang Hebei China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cai\u2010hong","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Clinical Laboratory Hebei Petrochina Central Hospital  Langfang China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dong\u2010lan","family":"Sun","sequence":"additional","affiliation":[{"name":"Prenatal Diagnosis Center Shijiazhuang Obstetrics and Gynecology Hospital  Shijiazhuang China"},{"name":"Hebei Key Laboratory of Maternal and Fetal Medicine; 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