1-64835404-G-A

Position:

chr1-64835404-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PP2PP3_ModerateBS2

The NM_002227.4(JAK1):c.3361C>T(p.Pro1121Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000561 in 1,426,286 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 (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000056 ( 0 hom. )

Consequence

JAK1
NM_002227.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.67

Variant links:

Genes affected

JAK1 (HGNC:6190): (Janus kinase 1) This gene encodes a membrane protein that is a member of a class of protein-tyrosine kinases (PTK) characterized by the presence of a second phosphotransferase-related domain immediately N-terminal to the PTK domain. The encoded kinase phosphorylates STAT proteins (signal transducers and activators of transcription) and plays a key role in interferon-alpha/beta, interferon-gamma, and cytokine signal transduction. This gene plays a crucial role in effecting the expression of genes that mediate inflammation, epithelial remodeling, and metastatic cancer progression. This gene is a key component of the interleukin-6 (IL-6)/JAK1/STAT3 immune and inflammation response and is a therapeutic target for alleviating cytokine storms. The kinase activity of this gene is directly inhibited by the suppressor of cytokine signalling 1 (SOCS1) protein. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2020]

JAK1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), JAK1. . Gene score misZ 4.6073 (greater than the threshold 3.09). Trascript score misZ 5.8568 (greater than threshold 3.09). GenCC has associacion of gene with autoinflammation, immune dysregulation, and eosinophilia.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.903

BS2

High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
JAK1	NM_002227.4 linkuse as main transcript	c.3361C>T	p.Pro1121Ser	missense_variant	24/25	ENST00000342505.5	NP_002218.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
JAK1	ENST00000342505.5 linkuse as main transcript	c.3361C>T	p.Pro1121Ser	missense_variant	24/25	5	NM_002227.4	ENSP00000343204	A1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000430

AC:

AN:

232686

Hom.:

AF XY:

0.00000788

AC XY:

AN XY:

126950

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000917

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000561

AC:

AN:

1426286

Hom.:

Cov.:

AF XY:

0.00000422

AC XY:

AN XY:

711228

show subpopulations

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:

0.00000733

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 03, 2022

This variant has not been reported in the literature in individuals affected with JAK1-related conditions. 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. 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 JAK1 protein function. This variant is present in population databases (no rsID available, gnomAD 0.0009%). This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 1121 of the JAK1 protein (p.Pro1121Ser). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Uncertain

0.061

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.82

Eigen

Uncertain

0.23

Eigen_PC

Benign

0.22

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.90

MetaSVM

Uncertain

-0.030

MutationAssessor

Benign

0.72

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.48

PROVEAN

Pathogenic

-6.2

REVEL

Uncertain

0.54

Sift

Benign

0.057

Sift4G

Uncertain

0.060

Polyphen

0.89

Vest4

0.43

MutPred

0.84

Loss of glycosylation at P1121 (P = 0.077);

MVP

0.69

MPC

1.7

ClinPred

0.90

GERP RS

3.3

Varity_R

0.46

gMVP

0.52

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over