chr2-178587644-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2
The NM_001267550.2(TTN):āc.63665T>Gā(p.Val21222Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,612,726 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V21222A) has been classified as Uncertain significance.
Frequency
Consequence
NM_001267550.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 3 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TTN | NM_001267550.2 | c.63665T>G | p.Val21222Gly | missense_variant | 306/363 | ENST00000589042.5 | |
TTN-AS1 | NR_038272.1 | n.3188+2651A>C | intron_variant, non_coding_transcript_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TTN | ENST00000589042.5 | c.63665T>G | p.Val21222Gly | missense_variant | 306/363 | 5 | NM_001267550.2 | P1 | |
TTN-AS1 | ENST00000659121.1 | n.417-9952A>C | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes AF: 0.00000658 AC: 1AN: 152018Hom.: 0 Cov.: 32
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1460708Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1AN XY: 726630
GnomAD4 genome AF: 0.00000658 AC: 1AN: 152018Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74224
ClinVar
Submissions by phenotype
Cardiovascular phenotype Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 19, 2019 | The p.V12157G variant (also known as c.36470T>G), located in coding exon 133 of the TTN gene, results from a T to G substitution at nucleotide position 36470. The valine at codon 12157 is replaced by glycine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at