Submissions for variant NM_001267550.2(TTN):c.55029G>A (p.Arg18343=)

gnomAD frequency: 0.00915  dbSNP: rs62178963

Total submissions: 27

Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	RCV000040369	SCV000064060	benign	not specified	2012-02-10	criteria provided, single submitter	clinical testing	Arg15775Arg in exon 232 of TTN: This variant is classified as benign based on it s high frequency in the general population (dbSNP rs62178963; NHLBI Exome Sequen cing Project, http://evs.gs.washington.edu/EVS).
Genetic Services Laboratory, University of Chicago	RCV000040369	SCV000153302	benign	not specified	2015-02-10	criteria provided, single submitter	clinical testing
GeneDx	RCV000040369	SCV000169298	benign	not specified	2013-06-21	criteria provided, single submitter	clinical testing	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.
Labcorp Genetics (formerly Invitae), Labcorp	RCV000226534	SCV000286721	benign	Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J	2024-01-31	criteria provided, single submitter	clinical testing
PreventionGenetics, part of Exact Sciences	RCV000040369	SCV000315514	benign	not specified		criteria provided, single submitter	clinical testing
Ambry Genetics	RCV000250760	SCV000317817	likely benign	Cardiovascular phenotype	2012-10-03	criteria provided, single submitter	clinical testing	This alteration is classified as likely benign based on a combination of the following: 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.
Illumina Laboratory Services, Illumina	RCV000397404	SCV000422762	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	RCV000302771	SCV000422763	likely benign	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 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	RCV000357748	SCV000422764	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	RCV000390181	SCV000422765	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.
Illumina Laboratory Services, Illumina	RCV000304152	SCV000422766	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.
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	RCV000768990	SCV000900363	benign	Cardiomyopathy	2017-04-25	criteria provided, single submitter	clinical testing
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	RCV001529236	SCV001158912	benign	not provided	2023-10-06	criteria provided, single submitter	clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp	RCV000040369	SCV001360576	benign	not specified	2019-10-30	criteria provided, single submitter	clinical testing	Variant summary: TTN c.47325G>A alters a non-conserved nucleotide resulting in a synonymous change. 5/5 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 0.0071 in 248232 control chromosomes, predominantly at a frequency of 0.012 within the Non-Finnish European subpopulation in the gnomAD database, including 8 homozygotes. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 19 fold of the estimated maximal expected allele frequency for a pathogenic variant in TTN causing Cardiomyopathy phenotype (0.00063), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. To our knowledge, no occurrence of c.47325G>A in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Four ClinVar submitters (evaluation after 2014) cite this variant as benign (x3) and uncertain significance (x1). Based on the evidence outlined above, the variant was classified as benign.
Athena Diagnostics	RCV000040369	SCV001475782	benign	not specified	2019-09-25	criteria provided, single submitter	clinical testing
Genome-Nilou Lab	RCV000302771	SCV002100495	benign	Autosomal recessive limb-girdle muscular dystrophy type 2J	2021-09-10	criteria provided, single submitter	clinical testing
Genome-Nilou Lab	RCV000390181	SCV002100496	benign	Myopathy, myofibrillar, 9, with early respiratory failure	2021-09-10	criteria provided, single submitter	clinical testing
Genome-Nilou Lab	RCV000304152	SCV002100497	benign	Early-onset myopathy with fatal cardiomyopathy	2021-09-10	criteria provided, single submitter	clinical testing
Genome-Nilou Lab	RCV000397404	SCV002100499	benign	Tibial muscular dystrophy	2021-09-10	criteria provided, single submitter	clinical testing
CeGaT Center for Human Genetics Tuebingen	RCV001529236	SCV002496586	benign	not provided	2024-07-01	criteria provided, single submitter	clinical testing	TTN: BP4, BP7, BS1, BS2
Breakthrough Genomics, Breakthrough Genomics	RCV001529236	SCV005259486	likely benign	not provided		criteria provided, single submitter	not provided
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	RCV001529236	SCV001742343	likely benign	not provided		no assertion criteria provided	clinical testing
Clinical Genetics, Academic Medical Center	RCV000040369	SCV001917653	benign	not specified		no assertion criteria provided	clinical testing
Genome Diagnostics Laboratory, University Medical Center Utrecht	RCV000040369	SCV001932987	benign	not specified		no assertion criteria provided	clinical testing
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	RCV000040369	SCV001957880	benign	not specified		no assertion criteria provided	clinical testing
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	RCV000040369	SCV001972218	benign	not specified		no assertion criteria provided	clinical testing
Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	RCV001529236	SCV002035691	likely benign	not provided		no assertion criteria provided	clinical testing