Submissions for variant NM_001267550.2(TTN):c.95582A>G (p.Tyr31861Cys)

gnomAD frequency: 0.00092  dbSNP: rs59148238

Total submissions: 16

Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
Biesecker Lab/Clinical Genomics Section, National Institutes of Health	RCV000172616	SCV000051309	likely benign	not provided	2013-06-24	criteria provided, single submitter	research
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	RCV000154887	SCV000204569	benign	not specified	2017-12-08	criteria provided, single submitter	clinical testing	Tyr29293Cys in exon 293 of TTN: This variant is not expected to have clinical si gnificance because it has been identified in 0.3% (77/24022) of African chromoso mes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.or g; dbSNP rs59148238) BA1.
GeneDx	RCV000172616	SCV000237811	likely benign	not provided	2021-03-01	criteria provided, single submitter	clinical testing
Invitae	RCV001083749	SCV000286932	likely benign	Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J	2024-01-31	criteria provided, single submitter	clinical testing
Eurofins Ntd Llc (ga)	RCV000154887	SCV000333340	likely benign	not specified	2015-07-22	criteria provided, single submitter	clinical testing
Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego	RCV000852786	SCV000995511	likely benign	Cardiomyopathy	2018-11-28	criteria provided, single submitter	clinical testing
Illumina Laboratory Services, Illumina	RCV001131357	SCV001290978	uncertain significance	Dilated cardiomyopathy 1G	2017-04-27	criteria provided, single submitter	clinical testing	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance.
Illumina Laboratory Services, Illumina	RCV001131358	SCV001290979	benign	Myopathy, myofibrillar, 9, with early respiratory failure	2017-05-11	criteria provided, single submitter	clinical testing	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.
Illumina Laboratory Services, Illumina	RCV001131359	SCV001290980	uncertain significance	Autosomal recessive limb-girdle muscular dystrophy type 2J	2017-04-27	criteria provided, single submitter	clinical testing	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance.
Illumina Laboratory Services, Illumina	RCV001131360	SCV001290981	uncertain significance	Early-onset myopathy with fatal cardiomyopathy	2017-04-27	criteria provided, single submitter	clinical testing	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance.
Illumina Laboratory Services, Illumina	RCV001131361	SCV001290982	benign	Tibial muscular dystrophy	2017-05-11	criteria provided, single submitter	clinical testing	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	RCV000852786	SCV001333362	benign	Cardiomyopathy	2018-03-20	criteria provided, single submitter	clinical testing
Athena Diagnostics	RCV000154887	SCV001475817	benign	not specified	2020-06-25	criteria provided, single submitter	clinical testing
Ambry Genetics	RCV002362817	SCV002664760	likely benign	Cardiovascular phenotype	2018-11-20	criteria provided, single submitter	clinical testing	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp	RCV000154887	SCV003801235	benign	not specified	2023-01-16	criteria provided, single submitter	clinical testing	Variant summary: TTN c.87878A>G (p.Tyr29293Cys) results in a non-conservative amino acid change located in the A-band of the encoded protein sequence. Three of four in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00023 in 248972 control chromosomes, predominantly at a frequency of 0.0034 within the African or African-American subpopulation in the gnomAD database. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 9 fold of the estimated maximal expected allele frequency for a pathogenic variant in TTN causing Dilated Cardiomyopathy phenotype (0.00039), 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.87878A>G in individuals affected with Dilated Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Ten clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (Benign/likely benign n=9, VUS n=1). Based on the evidence outlined above, the variant was classified as benign.
PreventionGenetics, part of Exact Sciences	RCV004544420	SCV004783140	likely benign	TTN-related disorder	2022-01-16	criteria provided, single submitter	clinical testing	This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).