Submissions for variant NM_001267550.2(TTN):c.19150C>A (p.Pro6384Thr)

gnomAD frequency: 0.00233  dbSNP: rs72648953

Total submissions: 22

Submitter	RCV	SCV	Clinical significance	Condition	Last evaluated	Review status	Method	Comment
Biesecker Lab/Clinical Genomics Section, National Institutes of Health	RCV000154091	SCV000051454	likely benign	not provided	2013-06-24	criteria provided, single submitter	research
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	RCV000039923	SCV000063614	benign	not specified	2018-05-25	criteria provided, single submitter	clinical testing	The p.Pro5140Thr variant in TTN is classified as benign because it has been iden tified in 1% (263/25312) of Finnish chromosomes by the Genome Aggregation Databa se (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs72648953). ACMG/AMP Criter ia applied: BA1
GeneDx	RCV000154091	SCV000238264	likely benign	not provided	2020-08-21	criteria provided, single submitter	clinical testing	This variant is associated with the following publications: (PMID: 23861362, 24503780, 23396983, 28750076)
Labcorp Genetics (formerly Invitae), Labcorp	RCV001086633	SCV000286481	benign	Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J	2025-02-03	criteria provided, single submitter	clinical testing
Eurofins Ntd Llc (ga)	RCV000039923	SCV000335183	likely benign	not specified	2015-09-14	criteria provided, single submitter	clinical testing
Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	RCV000154091	SCV000610222	likely benign	not provided	2017-05-30	criteria provided, single submitter	clinical testing
Athena Diagnostics	RCV000039923	SCV000616013	benign	not specified	2023-11-02	criteria provided, single submitter	clinical testing
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario	RCV000769064	SCV000900437	benign	Cardiomyopathy	2017-07-24	criteria provided, single submitter	clinical testing
CeGaT Center for Human Genetics Tuebingen	RCV000154091	SCV001153062	likely benign	not provided	2024-11-01	criteria provided, single submitter	clinical testing	TTN: BS2
Illumina Laboratory Services, Illumina	RCV001134662	SCV001294413	uncertain significance	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, 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	RCV001134663	SCV001294414	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	RCV001134664	SCV001294415	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	RCV001134665	SCV001294416	uncertain significance	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, 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	RCV001134666	SCV001294417	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.
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	RCV000154091	SCV001472331	benign	not provided	2023-09-25	criteria provided, single submitter	clinical testing
Women's Health and Genetics/Laboratory Corporation of America, LabCorp	RCV000039923	SCV001519477	benign	not specified	2021-03-15	criteria provided, single submitter	clinical testing	Variant summary: TTN c.15418C>A (p.Pro5140Thr) results in a non-conservative amino acid change located in the I-band region (cardiodb.org) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.003 in 242524 control chromosomes in the gnomAD database, including 2 homozygotes. The observed variant frequency is approximately 7.8-fold 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. c.15418C>A has been reported in the literature in individuals affected with Dilated Cardiomyopathy (e.g. Lopes_2013, Pugh_2014, Forleo_2017). These reports do not provide unequivocal conclusions about association of the variant with Dilated Cardiomyopathy. In at least one of these cases, co-occurrence with another pathogenic variant was reported (LMNA c.673C>T, p.Arg225X; Pugh_2014), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. 11 other clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation, citing the variant as benign/likely benign (n=9) and uncertain significance (n=2). Based on the evidence outlined above, the variant was classified as benign.
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	RCV000154091	SCV001744645	likely benign	not provided		no assertion criteria provided	clinical testing
Clinical Genetics, Academic Medical Center	RCV000039923	SCV001917015	benign	not specified		no assertion criteria provided	clinical testing
Genome Diagnostics Laboratory, University Medical Center Utrecht	RCV000039923	SCV001932320	benign	not specified		no assertion criteria provided	clinical testing
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	RCV000039923	SCV001956699	benign	not specified		no assertion criteria provided	clinical testing
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	RCV000039923	SCV001975347	benign	not specified		no assertion criteria provided	clinical testing
PreventionGenetics, part of Exact Sciences	RCV004534862	SCV004755005	benign	TTN-related disorder	2021-09-13	no assertion criteria provided	clinical testing	This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).