ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.25619C>T (p.Ser8540Phe) (rs201523784)

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Total submissions: 12
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Biesecker Lab/Clinical Genomics Section,National Institutes of Health RCV000172686 SCV000055046 likely benign not provided 2013-06-24 criteria provided, single submitter research
Laboratory for Molecular Medicine, Partners HealthCare Personalized Medicine RCV000040032 SCV000063723 uncertain significance not specified 2015-12-14 criteria provided, single submitter clinical testing Variant classified as Uncertain Significance - Favor Benign. The p.Ser7296Phe va riant in TTN has been identified by our laboratory in 1 infant with unspecified cardiomyopathy, 1 Ashkenazi Jewish adult with HCM, and in 1 Caucasian adult with DCM who also carried a likely pathogenic variant in TTN. In addition, this vari ant has been identified in 54/66002 European chromosomes by the Exome Aggregatio n Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs201523784). Serine ( Ser) at position 7296 is not conserved in mammals or evolutionarily distant spec ies and 4 species (hedgehog, tenrec, Southern platyfish and zebrafish) carry a p henylalanine (Phe) at this position, raising the possibility that this change ma y be tolerated. Additional computational tools do not provide strong support for or against and impact to the protein. In summary, while the clinical significan ce of the p.Ser7296Phe variant is uncertain, its frequency and the presence of t he variant amino acid in other species suggest that it is more likely to be beni gn.
GeneDx RCV000040032 SCV000238364 likely benign not specified 2017-06-16 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.
Invitae RCV001081212 SCV000286530 likely benign Dilated cardiomyopathy 1G; Limb-girdle muscular dystrophy, type 2J 2019-12-31 criteria provided, single submitter clinical testing
EGL Genetic Diagnostics,Eurofins Clinical Diagnostics RCV000040032 SCV000336323 likely benign not specified 2017-06-02 criteria provided, single submitter clinical testing
Agnes Ginges Centre for Molecular Cardiology,Centenary Institute RCV000853460 SCV000996371 likely benign Hypertrophic cardiomyopathy 2017-01-25 criteria provided, single submitter research This variant has been identified as part of our research program. Refer to the 'condition' field for the phenotype of the proband(s) identified with this variant. For further information please feel free to contact us.
Illumina Clinical Services Laboratory,Illumina RCV001132881 SCV001292560 uncertain significance Myopathy, early-onset, with fatal cardiomyopathy 2018-01-12 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 Clinical Services Laboratory,Illumina RCV001132882 SCV001292561 benign Myopathy, myofibrillar, 9, with early respiratory failure 2018-01-12 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 Clinical Services Laboratory,Illumina RCV001136308 SCV001296137 uncertain significance Dilated cardiomyopathy 1G 2018-01-12 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 Clinical Services Laboratory,Illumina RCV001136309 SCV001296138 benign Tibial muscular dystrophy 2018-01-12 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 Clinical Services Laboratory,Illumina RCV001136310 SCV001296139 uncertain significance Limb-girdle muscular dystrophy, type 2J 2018-01-12 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.
Integrated Genetics/Laboratory Corporation of America RCV000040032 SCV001362770 likely benign not specified 2019-10-07 criteria provided, single submitter clinical testing Variant summary: TTN c.21887C>T (p.Ser7296Phe) results in a non-conservative amino acid change located in the I-band of the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00058 in 248154 control chromosomes, predominantly at a frequency of 0.00065 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 1 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.21887C>T in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Co-occurrences with other pathogenic variant have been reported (TTN, unspecified variant (ClinVar entry); MYH7 c.2539A>G , p.Lys847Glu (internal specimen)), providing supporting evidence for a benign role. Four ClinVar submissions (evaluation after 2014) cite the variant twice as likely benign and twice as uncertain significance. Based on the evidence outlined above, the variant was classified as likely benign.

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