Submissions for variant NM_001267550.2(TTN):c.92537T>C (p.Val30846Ala)

gnomAD frequency: 0.00262  dbSNP: rs77968867

Total submissions: 19

Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
Biesecker Lab/Clinical Genomics Section, National Institutes of Health	RCV000040794	SCV000054892	benign	not specified	2013-06-24	criteria provided, single submitter	research
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	RCV000040794	SCV000064485	likely benign	not specified	2012-01-09	criteria provided, single submitter	clinical testing	Val28278Ala in exon 288 of TTN: This variant is not expected to have clinical si gnificance because it is not located within the splice consensus sequence and ha s been identified in 0.3% (6/2000) of racially unspecified chromosomes (dbSNP rs 77968867) and in 0.8% (27/3168) of African American chromosomes (NHLBI Exome Seq uencing Project; http://evs.gs.washington.edu/EVS) from two broad, though clinic ally unspecified populations. Val28278Ala in exon 288 of TTN (rs7796886, NHLBI Exome Seq Project; 0.8%, 27/3168)
GeneDx	RCV000714120	SCV000237765	likely benign	not provided	2021-04-27	criteria provided, single submitter	clinical testing	This variant is associated with the following publications: (PMID: 23861362)
Eurofins Ntd Llc (ga)	RCV000040794	SCV000333950	benign	not specified	2015-08-17	criteria provided, single submitter	clinical testing
Invitae	RCV001082181	SCV000555483	benign	Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J	2024-01-29	criteria provided, single submitter	clinical testing
Athena Diagnostics	RCV000714120	SCV000844795	benign	not provided	2017-11-01	criteria provided, single submitter	clinical testing
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	RCV000768860	SCV000900233	likely benign	Cardiomyopathy	2017-08-03	criteria provided, single submitter	clinical testing
Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego	RCV000852788	SCV000995514	benign	Primary dilated cardiomyopathy	2018-02-07	criteria provided, single submitter	clinical testing
Illumina Laboratory Services, Illumina	RCV001129729	SCV001289272	likely benign	Dilated cardiomyopathy 1G	2018-01-13	criteria provided, single submitter	clinical testing	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease.
Illumina Laboratory Services, Illumina	RCV001132436	SCV001292096	benign	Tibial muscular dystrophy	2018-01-13	criteria provided, single submitter	clinical testing	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.
Illumina Laboratory Services, Illumina	RCV001132437	SCV001292097	likely benign	Early-onset myopathy with fatal cardiomyopathy	2018-01-13	criteria provided, single submitter	clinical testing	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease.
Illumina Laboratory Services, Illumina	RCV001132438	SCV001292098	uncertain significance	Autosomal recessive limb-girdle muscular dystrophy type 2J	2018-01-13	criteria provided, single submitter	clinical testing	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Illumina Laboratory Services, Illumina	RCV001132439	SCV001292099	benign	Myopathy, myofibrillar, 9, with early respiratory failure	2018-01-13	criteria provided, single submitter	clinical testing	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp	RCV000040794	SCV001432109	benign	not specified	2020-08-17	criteria provided, single submitter	clinical testing	Variant summary: TTN c.84833T>C (p.Val28278Ala) results in a non-conservative amino acid change located in the A-band of the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00063 in 248862 control chromosomes in the gnomAD database, including 1 homozygotes. The observed variant frequency is approximately 2 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 benign. To our knowledge, no occurrence of c.84833T>C in individuals affected with Dilated Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Co-occurrence with other a pathogenic variant has been reported (TTN c.62134C>T, p.Gln20712X), providing supporting evidence for a benign role. Seven clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and all laboratories classified this variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as benign.
Ambry Genetics	RCV002362647	SCV002657938	benign	Cardiovascular phenotype	2018-04-05	criteria provided, single submitter	clinical testing	This alteration is classified as 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.
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	RCV000040794	SCV001740274	benign	not specified		no assertion criteria provided	clinical testing
Clinical Genetics, Academic Medical Center	RCV000040794	SCV001919581	benign	not specified		no assertion criteria provided	clinical testing
Genome Diagnostics Laboratory, University Medical Center Utrecht	RCV000714120	SCV001926424	likely benign	not provided		no assertion criteria provided	clinical testing
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	RCV000714120	SCV001971169	likely benign	not provided		no assertion criteria provided	clinical testing