19-17839649-A-G

Variant names:

• chr19-17839649-A-G
• rs1555744931
• NM_000215.4:c.1269T>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_000215.4(JAK3):​c.1269T>C​(p.Pro423Pro) variant causes a synonymous 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. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: JAK3 NM_000215.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -2.85
• 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, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, ClinGen, Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 19-17839649-A-G is Benign according to our data. Variant chr19-17839649-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 532752.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-2.85 with no splicing effect.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JAK3	NM_000215.4	MANE Select	c.1269T>C	p.Pro423Pro	synonymous	Exon 10 of 24	NP_000206.2
	JAK3	NM_001440439.1		c.1269T>C	p.Pro423Pro	synonymous	Exon 10 of 24	NP_001427368.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JAK3	ENST00000458235.7	TSL:5 MANE Select	c.1269T>C	p.Pro423Pro	synonymous	Exon 10 of 24	ENSP00000391676.1
	JAK3	ENST00000527670.5	TSL:1	c.1269T>C	p.Pro423Pro	synonymous	Exon 9 of 23	ENSP00000432511.1
	JAK3	ENST00000534444.1	TSL:1	c.1269T>C	p.Pro423Pro	synonymous	Exon 10 of 23	ENSP00000436421.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Oct 31, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.24
DANN	Benign	0.55
PhyloP100		-2.8

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: rs1555744931; hg19: chr19-17950458;