rs34669146

Positions:

• chr19-10353614-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003331.5(TYK2):​c.2941G>T​(p.Val981Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TYK2 NM_003331.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.195

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TYK2	NM_003331.5	c.2941G>T	p.Val981Leu	missense_variant	21/25	ENST00000525621.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TYK2	ENST00000525621.6	c.2941G>T	p.Val981Leu	missense_variant	21/25	1	NM_003331.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1327022 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 646782

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Benign	0.0032	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	16
DANN	Benign	0.93
DEOGEN2	Benign	0.16	T;T;T
Eigen	Benign	-0.53
Eigen_PC	Benign	-0.32
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.76	T;D;.
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.16	T;T;T
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	-0.41	N;.;N
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	0.65	N;N;N
REVEL	Benign	0.24
Sift	Benign	1.0	T;T;T
Sift4G	Benign	1.0	T;T;T
Polyphen		0.031	B;.;B
Vest4		0.26
MutPred		0.73		Gain of catalytic residue at V981 (P = 0.1522);.;Gain of catalytic residue at V981 (P = 0.1522);
MVP		0.46
MPC		0.29
ClinPred		0.64	D
GERP RS		3.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.22
gMVP		0.28

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.26		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.26		Position offset: -14

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs34669146; hg19: chr19-10464290;