chr19-17831723-G-C

Variant names:

• chr19-17831723-G-C
• rs767424476
• NM_000215.4:c.2756C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000215.4(JAK3):​c.2756C>G​(p.Ala919Gly) 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. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A919V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: JAK3 NM_000215.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.09
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• T-B+ severe combined immunodeficiency due to JAK3 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet

ENSG00000297031 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.090759605).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000215.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JAK3	NM_000215.4	MANE Select	c.2756C>G	p.Ala919Gly	missense	Exon 20 of 24	NP_000206.2
	JAK3	NM_001440439.1		c.2756C>G	p.Ala919Gly	missense	Exon 20 of 24	NP_001427368.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JAK3	ENST00000458235.7	TSL:5 MANE Select	c.2756C>G	p.Ala919Gly	missense	Exon 20 of 24	ENSP00000391676.1	P52333-1
	JAK3	ENST00000527670.5	TSL:1	c.2756C>G	p.Ala919Gly	missense	Exon 19 of 23	ENSP00000432511.1	P52333-1
	JAK3	ENST00000534444.1	TSL:1	c.2756C>G	p.Ala919Gly	missense	Exon 20 of 23	ENSP00000436421.1	P52333-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.072
BayesDel_addAF	Benign	-0.069	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	13
DANN	Benign	0.94
DEOGEN2	Benign	0.38	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.66	T
M_CAP	Uncertain	0.089	D
MetaRNN	Benign	0.091	T
MetaSVM	Benign	-0.90	T
MutationAssessor	Benign	-0.13	N
PhyloP100		1.1
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-0.86	N
REVEL	Benign	0.14
Sift	Benign	0.37	T
Sift4G	Benign	0.39	T
Polyphen		0.0	B
Vest4		0.25
MutPred		0.32		Loss of stability (P = 0.0318)
MVP		0.68
MPC		0.48
ClinPred		0.080	T
GERP RS		1.6
Varity_R		0.19
gMVP		0.75
Mutation Taster		=71/29	polymorphism

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

Other links and lift over

dbSNP: rs767424476; hg19: chr19-17942532;