18-31595274-G-A
Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_StrongBP6BS2_Supporting
The NM_000371.4(TTR):c.336+19G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000548 in 1,614,114 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000371.4 intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -6 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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TTR | ENST00000237014.8 | c.336+19G>A | intron_variant | Intron 3 of 3 | 1 | NM_000371.4 | ENSP00000237014.4 | |||
TTR | ENST00000649620.1 | c.336+19G>A | intron_variant | Intron 5 of 5 | ENSP00000497927.1 | |||||
TTR | ENST00000610404.5 | c.240+19G>A | intron_variant | Intron 3 of 3 | 5 | ENSP00000477599.2 | ||||
TTR | ENST00000541025.2 | n.381G>A | non_coding_transcript_exon_variant | Exon 3 of 3 | 2 |
Frequencies
GnomAD3 genomes AF: 0.00284 AC: 432AN: 152160Hom.: 2 Cov.: 32
GnomAD3 exomes AF: 0.000680 AC: 171AN: 251300Hom.: 1 AF XY: 0.000398 AC XY: 54AN XY: 135806
GnomAD4 exome AF: 0.000309 AC: 452AN: 1461836Hom.: 1 Cov.: 31 AF XY: 0.000257 AC XY: 187AN XY: 727224
GnomAD4 genome AF: 0.00284 AC: 433AN: 152278Hom.: 2 Cov.: 32 AF XY: 0.00244 AC XY: 182AN XY: 74468
ClinVar
Submissions by phenotype
not provided Uncertain:1Benign:3
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Amyloidosis, hereditary systemic 1 Benign:3
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not specified Benign:2
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Charcot-Marie-Tooth disease Benign:1
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TTR-related disorder Benign:1
This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -
Cardiovascular phenotype Benign:1
This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at