rs140594440
Positions:
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting
The NM_003331.5(TYK2):c.1807G>A(p.Val603Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000198 in 1,614,110 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.00019 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00020 ( 0 hom. )
Consequence
TYK2
NM_003331.5 missense
NM_003331.5 missense
Scores
2
10
7
Clinical Significance
Conservation
PhyloP100: 3.53
Genes affected
TYK2 (HGNC:12440): (tyrosine kinase 2) This gene encodes a member of the tyrosine kinase and, more specifically, the Janus kinases (JAKs) protein families. This protein associates with the cytoplasmic domain of type I and type II cytokine receptors and promulgate cytokine signals by phosphorylating receptor subunits. It is also a component of both the type I and type III interferon signaling pathways. As such, it may play a role in anti-viral immunity. A mutation in this gene has been associated with Immunodeficiency 35. [provided by RefSeq, Sep 2020]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.21590436).
BS1
Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000199 (291/1461826) while in subpopulation MID AF= 0.00329 (19/5768). AF 95% confidence interval is 0.00216. There are 0 homozygotes in gnomad4_exome. There are 160 alleles in male gnomad4_exome subpopulation. Median coverage is 36. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TYK2 | NM_003331.5 | c.1807G>A | p.Val603Met | missense_variant | 13/25 | ENST00000525621.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TYK2 | ENST00000525621.6 | c.1807G>A | p.Val603Met | missense_variant | 13/25 | 1 | NM_003331.5 | P1 |
Frequencies
GnomAD3 genomes AF: 0.000204 AC: 31AN: 152166Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.000291 AC: 73AN: 251102Hom.: 0 AF XY: 0.000317 AC XY: 43AN XY: 135802
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GnomAD4 exome AF: 0.000199 AC: 291AN: 1461826Hom.: 0 Cov.: 36 AF XY: 0.000220 AC XY: 160AN XY: 727218
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GnomAD4 genome AF: 0.000190 AC: 29AN: 152284Hom.: 0 Cov.: 32 AF XY: 0.000242 AC XY: 18AN XY: 74454
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Immunodeficiency 35 Uncertain:3
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Nov 01, 2022 | This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 603 of the TYK2 protein (p.Val603Met). This variant is present in population databases (rs140594440, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with TYK2-related conditions. ClinVar contains an entry for this variant (Variation ID: 327946). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on TYK2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 28, 2018 | This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Uncertain
D;T;D;.
Eigen
Uncertain
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Uncertain
D;D;.;D
M_CAP
Pathogenic
D
MetaRNN
Benign
T;T;T;T
MetaSVM
Uncertain
T
MutationAssessor
Pathogenic
M;.;M;.
MutationTaster
Benign
N;N;N;N
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N;N
REVEL
Uncertain
Sift
Uncertain
D;D;D;D
Sift4G
Uncertain
D;D;D;D
Polyphen
D;.;D;D
Vest4
MVP
MPC
0.89
ClinPred
T
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at