ClinVar Miner

Submissions for variant GRCh37/hg19 Xp21.1(chrX:32451450-32629283)x1

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Quest Diagnostics Nichols Institute San Juan Capistrano RCV004819409 SCV005440009 pathogenic not provided 2024-02-09 criteria provided, single submitter clinical testing The copy number loss involves an intragenic portion (approximately exons 13-29; NM_004006.3) of DMD (OMIM 300377), which is predicted to be an in-frame deletion. In-frame variants of DMD are predicted to result in Becker muscular dystrophy (BMD; OMIM 300376) .Specifically, an in-frame deletion of exons 13-29 of DMD comparable to the current case has been reported in a family with BMD (Romero 1997). A small percentage of carrier females (2.5%-19%) are manifesting carriers (Darras 2022, Ishizaki 2018). There are no similar copy number losses of this region in the general populations of the Database of Genomic Variants. Therefore, this copy number variant (CNV) is interpreted as pathogenic. References: Darras et al., GeneReviews [2022 Jan 20]. PMID: 20301298; Ishizaki et al., Neuromuscul Disord. 2018 Jul;28(7):572-581. PMID: 29801751; Romero et al., Neuromuscul Disord. 1997 Dec;7(8):499-504. PMID: 9447607

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