Submissions for variant NM_000257.4(MYH7):c.3972+16G>A

gnomAD frequency: 0.00424  dbSNP: rs114978322

Total submissions: 8

Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
PreventionGenetics, part of Exact Sciences	RCV000168897	SCV000303232	benign	not specified		criteria provided, single submitter	clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp	RCV000168897	SCV001519439	benign	not specified	2021-03-11	criteria provided, single submitter	clinical testing	Variant summary: MYH7 c.3972+16G>A alters a nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.0011 in 251444 control chromosomes, predominantly at a frequency of 0.015 within the African or African-American subpopulation in the gnomAD database, including 2 homozygotes. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 11.99 fold of the estimated maximal expected allele frequency for a pathogenic variant in MYH7 causing Cardiomyopathy phenotype (0.0013), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. To our knowledge, no occurrence of c.3972+16G>A in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as benign.
GeneDx	RCV001711452	SCV001940241	benign	not provided	2015-03-03	criteria provided, single submitter	clinical testing
Invitae	RCV002054010	SCV002446617	benign	Hypertrophic cardiomyopathy	2024-01-31	criteria provided, single submitter	clinical testing
Fulgent Genetics, Fulgent Genetics	RCV002505221	SCV002798846	benign	Hypertrophic cardiomyopathy 1; Myopathy, myosin storage, autosomal recessive; Myosin storage myopathy; Congenital myopathy with fiber type disproportion; Dilated cardiomyopathy 1S; MYH7-related skeletal myopathy	2021-07-23	criteria provided, single submitter	clinical testing
Clinical Genetics, Academic Medical Center	RCV000168897	SCV001918330	benign	not specified		no assertion criteria provided	clinical testing
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	RCV000168897	SCV001975159	benign	not specified		no assertion criteria provided	clinical testing
Genome Diagnostics Laboratory, University Medical Center Utrecht	RCV000168897	SCV001977840	benign	not specified		no assertion criteria provided	clinical testing