2-178729503-A-C
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP2PP3
The NM_001267550.2(TTN):āc.18653T>Gā(p.Leu6218Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,440 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ). Synonymous variant affecting the same amino acid position (i.e. L6218L) has been classified as Likely benign.
Frequency
Consequence
NM_001267550.2 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TTN | NM_001267550.2 | c.18653T>G | p.Leu6218Arg | missense_variant | 64/363 | ENST00000589042.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TTN | ENST00000589042.5 | c.18653T>G | p.Leu6218Arg | missense_variant | 64/363 | 5 | NM_001267550.2 | P1 | |
TTN-AS1 | ENST00000659121.1 | n.503-5001A>C | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes AF: 0.0000460 AC: 7AN: 152100Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000121 AC: 3AN: 248380Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 134736
GnomAD4 exome AF: 0.00000753 AC: 11AN: 1461340Hom.: 0 Cov.: 32 AF XY: 0.0000110 AC XY: 8AN XY: 726964
GnomAD4 genome AF: 0.0000460 AC: 7AN: 152100Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1AN XY: 74282
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Jul 14, 2014 | The Leu4974Arg variant in TTN has not been previously reported in individuals wi th cardiomyopathy or in large population studies. Computational prediction tools and conservation analysis do not provide strong support for or against an impac t to the protein. In summary, the clinical significance of the Leu4974Arg varian t is uncertain. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at