dbSNP rs774941503: JAK3:p.Arg149Pro (chr19-17843147-C-G) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_000215.4(JAK3):c.446G>C(p.Arg149Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,454,904 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: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

JAK3
NM_000215.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.663

Variant links:

Genes affected

JAK3 (HGNC:6193): (Janus kinase 3) The protein encoded by this gene is a member of the Janus kinase (JAK) family of tyrosine kinases involved in cytokine receptor-mediated intracellular signal transduction. It is predominantly expressed in immune cells and transduces a signal in response to its activation via tyrosine phosphorylation by interleukin receptors. Mutations in this gene are associated with autosomal SCID (severe combined immunodeficiency disease). [provided by RefSeq, Jul 2008]

JAK3 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM1

In a region_of_interest Interaction with cytokine/interferon/growth hormone receptors (size 222) in uniprot entity JAK3_HUMAN there are 5 pathogenic changes around while only 1 benign (83%) in NM_000215.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.781

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JAK3	NM_000215.4 link	c.446G>C	p.Arg149Pro	missense_variant	Exon 5 of 24	ENST00000458235.7	NP_000206.2	P52333-1A0A024R7M7
JAK3	XM_047438786.1 link	c.446G>C	p.Arg149Pro	missense_variant	Exon 5 of 24		XP_047294742.1
JAK3	XM_011527991.3 link	c.446G>C	p.Arg149Pro	missense_variant	Exon 5 of 14		XP_011526293.2
JAK3	XR_007066796.1 link	n.496G>C		non_coding_transcript_exon_variant	Exon 5 of 20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
JAK3	ENST00000458235.7 link	c.446G>C	p.Arg149Pro	missense_variant	Exon 5 of 24	5	NM_000215.4	ENSP00000391676.1		P52333-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.87e-7

AC:

AN:

1454904

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723918

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:

9.00e-7

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

T-B+ severe combined immunodeficiency due to JAK3 deficiency

Uncertain:1

May 22, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine with proline at codon 149 of the JAK3 protein (p.Arg149Pro). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and proline. 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with JAK3-related disease. This variant is not present in population databases (ExAC no frequency). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.0056

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.36

T;T;.

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.51

FATHMM_MKL

Benign

0.32

LIST_S2

Benign

0.71

T;.;T

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.78

D;D;D

MetaSVM

Benign

-0.75

MutationAssessor

Uncertain

2.6

M;M;M

PrimateAI

Benign

0.27

PROVEAN

Benign

-2.2

N;N;N

REVEL

Uncertain

0.31

Sift

Benign

0.21

T;T;T

Sift4G

Benign

0.21

T;T;T

Polyphen

0.98

D;D;D

Vest4

0.66

MutPred

0.53

Gain of loop (P = 0.069);Gain of loop (P = 0.069);Gain of loop (P = 0.069);

MVP

0.85

MPC

1.4

ClinPred

0.76

GERP RS

-0.069

Varity_R

0.31

gMVP

0.78

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: -19

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