NM_002529.4:c.2020G>T
Variant summary
Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PP3_ModeratePP5_Very_Strong
The NM_002529.4(NTRK1):c.2020G>T(p.Asp674Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.00000497 in 1,609,332 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 Likely pathogenic (★★).
Frequency
Consequence
NM_002529.4 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary sensory and autonomic neuropathy type 4Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)
- familial medullary thyroid carcinomaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Pathogenic. The variant received 10 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
NTRK1 | NM_002529.4 | c.2020G>T | p.Asp674Tyr | missense_variant | Exon 15 of 17 | ENST00000524377.7 | NP_002520.2 | |
NTRK1 | NM_001012331.2 | c.2002G>T | p.Asp668Tyr | missense_variant | Exon 14 of 16 | NP_001012331.1 | ||
NTRK1 | NM_001007792.1 | c.1912G>T | p.Asp638Tyr | missense_variant | Exon 15 of 17 | NP_001007793.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152176Hom.: 0 Cov.: 31 show subpopulations
GnomAD2 exomes AF: 0.00000405 AC: 1AN: 246690 AF XY: 0.00000748 show subpopulations
GnomAD4 exome AF: 0.00000480 AC: 7AN: 1457038Hom.: 0 Cov.: 33 AF XY: 0.00000552 AC XY: 4AN XY: 725008 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152294Hom.: 0 Cov.: 31 AF XY: 0.0000134 AC XY: 1AN XY: 74472 show subpopulations
ClinVar
Submissions by phenotype
Hereditary insensitivity to pain with anhidrosis Pathogenic:5Other:1
Variant summary: NTRK1 c.2002G>T (p.Asp668Tyr) results in a non-conservative amino acid change located in the Protein kinase domain profile (IPR000719) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4.1e-06 in 246690 control chromosomes. c.2002G>T has been reported in the literature in multiple compound heterozygous individuals affected with Hereditary insensitivity to pain with anhidrosis (Miura_2000, Mardy_2001, Seo_2020, Cho_2024). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in reduced transformation activity (66%) of the receptor protein compared to that of wild type protein in in vitro cultured cells (Miranda_2002). The following publications have been ascertained in the context of this evaluation (PMID: 38581121, 32807182, 11159935, 11719521, 10982191, 32901917). ClinVar contains an entry for this variant (Variation ID: 21307). Based on the evidence outlined above, the variant was classified as pathogenic. -
It is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.0000041, PM2). The variant was observed in trans with a pathogenic variant (NM_002529.3:c.851-33T>A) as compound heterozygous (3billion dataset, PM3).In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.843, 3Cnet: 0.970, PP3). Patient's phenotype is considered compatible with Insensitivity to pain, congenital, with anhidrosis (3billion dataset, PP4).The variant has been reported as pathogenic/likely pathogenic without evidence for the classification (ClinVar ID:VCV000021307.2). Therefore, this variant is classified as likely pathogenic according to the recommendation of ACMG/AMP guideline. -
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Pathogenic variants common in Japanese population -
This missense change has been observed in individual(s) with NTRK1-related conditions (PMID: 10982191, 28177573, 32807182, 32901917). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (rs80356677, gnomAD 0.006%). This sequence change replaces aspartic acid, which is acidic and polar, with tyrosine, which is neutral and polar, at codon 668 of the NTRK1 protein (p.Asp668Tyr). This variant is also known as p.Asp674Tyr. For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. Experimental studies have shown that this missense change affects NTRK1 function (PMID: 11719521). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt NTRK1 protein function. ClinVar contains an entry for this variant (Variation ID: 21307). -
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at