ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.93803A>C (p.Lys31268Thr)

gnomAD frequency: 0.00021  dbSNP: rs200766837
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Total submissions: 17
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine RCV000155821 SCV000205532 benign not specified 2018-11-09 criteria provided, single submitter clinical testing proposed classification - variant undergoing re-assessment, contact laboratory
Centre for Mendelian Genomics, University Medical Centre Ljubljana RCV000415349 SCV000492737 uncertain significance Myopathy 2014-06-29 criteria provided, single submitter clinical testing
Eurofins Ntd Llc (ga) RCV000726977 SCV000704609 uncertain significance not provided 2017-08-22 criteria provided, single submitter clinical testing
Invitae RCV001086291 SCV000765237 likely benign Dilated cardiomyopathy 1G; Autosomal recessive limb-girdle muscular dystrophy type 2J 2024-01-29 criteria provided, single submitter clinical testing
Illumina Laboratory Services, Illumina RCV001129490 SCV001289023 benign Myopathy, myofibrillar, 9, with early respiratory failure 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 was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.
Illumina Laboratory Services, Illumina RCV001129491 SCV001289024 benign Tibial muscular dystrophy 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 was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign.
Illumina Laboratory Services, Illumina RCV001129492 SCV001289025 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 RCV001129493 SCV001289026 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 RCV001129494 SCV001289027 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.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV000155821 SCV001519569 likely benign not specified 2021-03-15 criteria provided, single submitter clinical testing Variant summary: TTN c.86099A>C (p.Lys28700Thr) results in a non-conservative amino acid change located in the I-band region 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 0.0005 in 248546 control chromosomes. The observed variant frequency is approximately 1.3 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.86099A>C in individuals affected with Dilated Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Six clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (benign, n=2; likely benign, n=1; VUS, n=3). Based on the evidence outlined above, the variant was classified as likely benign.
GeneDx RCV000726977 SCV001802148 likely benign not provided 2019-03-12 criteria provided, single submitter clinical testing This variant is associated with the following publications: (PMID: 27115767)
Ambry Genetics RCV002362823 SCV002661728 uncertain significance Cardiovascular phenotype 2019-03-27 criteria provided, single submitter clinical testing The p.K22203T variant (also known as c.66608A>C), located in coding exon 166 of the TTN gene, results from an A to C substitution at nucleotide position 66608. The lysine at codon 22203 is replaced by threonine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Revvity Omics, Revvity Omics RCV000726977 SCV003824770 uncertain significance not provided 2022-04-11 criteria provided, single submitter clinical testing
CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario RCV003486700 SCV004240176 benign Cardiomyopathy 2023-05-26 criteria provided, single submitter clinical testing
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen RCV000726977 SCV001744516 likely benign not provided no assertion criteria provided clinical testing
Clinical Genetics, Academic Medical Center RCV000726977 SCV001921684 likely benign not provided no assertion criteria provided clinical testing
Genome Diagnostics Laboratory, University Medical Center Utrecht RCV000726977 SCV001926674 likely benign not provided no assertion criteria provided clinical testing

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