ClinVar Miner

Submissions for variant NM_001267550.2(TTN):c.106675G>C (p.Glu35559Gln) (rs199632397)

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Total submissions: 17
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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 RCV000172600 SCV000051628 likely benign not provided 2013-06-24 criteria provided, single submitter research
GeneDx RCV000172600 SCV000237965 likely benign not provided 2021-05-10 criteria provided, single submitter clinical testing This variant is associated with the following publications: (PMID: 27930701, 23861362, 28440294)
Laboratory for Molecular Medicine, Partners HealthCare Personalized Medicine RCV000222652 SCV000272837 uncertain significance not specified 2017-07-10 criteria provided, single submitter clinical testing Variant classified as Uncertain Significance - Favor Benign. The p.Glu32991Gln v ariant has been identified by our laboratory in 1 Caucasian individual with idio pathic cardiomyopathy and in 0.1% (34/30728) of South Asian chromosomes by the G enome Aggreagation Database (gnomAD, http://gnomad.broadinstitute.org/, dbSNP rs 199632397). This variant was also identified in a 23-year-old female who died su ddenly; however, the specific cause of her death was unexplained even after auto psy (Sanchez 2016). This variant has also been reported in ClinVar (Variation ID 192135). Computational prediction tools and conservation analysis suggest that the p.Glu32991Gln variant may not impact the protein, though this information is not predictive enough to rule out pathogenicity. In summary, while the clinical significance of the p.Glu32991Gln variant is uncertain, its frequency suggests that it is more likely to be benign.
Ambry Genetics RCV000246902 SCV000318260 uncertain significance Cardiovascular phenotype 2013-02-14 criteria provided, single submitter clinical testing There is insufficient or conflicting evidence for classification of this alteration.
EGL Genetic Diagnostics, Eurofins Clinical Diagnostics RCV000222652 SCV000334023 likely benign not specified 2015-09-01 criteria provided, single submitter clinical testing
Illumina Clinical Services Laboratory,Illumina RCV000301237 SCV000419875 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 RCV000266285 SCV000419877 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.
Illumina Clinical Services Laboratory,Illumina RCV000321269 SCV000419878 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 RCV000380571 SCV000419879 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 RCV000266936 SCV000419880 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.
Invitae RCV000469383 SCV000542707 uncertain significance Dilated cardiomyopathy 1G; Limb-girdle muscular dystrophy, type 2J 2017-11-21 criteria provided, single submitter clinical testing
Ambry Genetics RCV000622328 SCV000741111 uncertain significance Inborn genetic diseases 2018-01-04 criteria provided, single submitter clinical testing Lines of evidence used in support of classification: UNCERTAIN: Alteration(s) of Uncertain Clinical Significance Detected
CHEO Genetics Diagnostic Laboratory,Children's Hospital of Eastern Ontario RCV000769843 SCV000901269 uncertain significance Cardiomyopathy 2017-02-23 criteria provided, single submitter clinical testing
CeGaT Praxis fuer Humangenetik Tuebingen RCV000172600 SCV001152561 uncertain significance not provided 2018-11-01 criteria provided, single submitter clinical testing
Athena Diagnostics Inc RCV000172600 SCV001474953 likely benign not provided 2019-11-05 criteria provided, single submitter clinical testing
Mayo Clinic Laboratories, Mayo Clinic RCV000172600 SCV001715740 uncertain significance not provided 2019-07-22 criteria provided, single submitter clinical testing
Illumina Clinical Services Laboratory,Illumina RCV001563645 SCV001786632 uncertain significance TTN-related myopathy 2021-03-22 criteria provided, single submitter clinical testing The TTN c.106675G>C (p.Glu35559Gln) variant is a missense variant. The p.Glu35559Gln variant has been reported in one publication in which it is described as c.98971G>C (p.Glu32991Gln). The variant was identified in a heterozygous state in a 23 year-old female with sudden unexplained death. The p.Glu35559Gln variant has not been reported in association with autosomal dominant or recessive TTN-related myopathies. The p.Glu35559Gln variant is reported at a frequency of 0.001146 in the South Asian population of the Genome Aggregation Database. Although this frequency is too high to suggest an association with dominant TTN-related phenotypes, it is consistent with a potential association with autosomal recessive phenotypes. This variant is located within the M band of the protein. In silico prediction of pathogenicity for this variant are mixed, but lean towards benign. However, currently available in silico prediction tools may have limited utility in the assessment of missense variants in the TTN gene (Rees et al. 2021). Based on the limited evidence and application of the ACMG criteria, the p.Glu35559Gln variant is classified as a variant of uncertain significance for TTN-related myopathy.

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