chr1-64845579-G-C

Position:

• chr1-64845579-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_002227.4(JAK1):​c.2049C>G​(p.Ser683Arg) 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. 13/21 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)
• Consequence: JAK1 NM_002227.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.92

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.17693484).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
JAK1	NM_002227.4	c.2049C>G	p.Ser683Arg	missense_variant	15/25	ENST00000342505.5	NP_002218.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
JAK1	ENST00000342505.5	c.2049C>G	p.Ser683Arg	missense_variant	15/25	5	NM_002227.4	ENSP00000343204	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.013	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	0.049
DANN	Benign	0.54
DEOGEN2	Uncertain	0.42	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.13	N
LIST_S2	Benign	0.77	T
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.75	T
MutationAssessor	Benign	-0.24	N
MutationTaster	Benign	0.99	P
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	0.72	N
REVEL	Uncertain	0.45
Sift	Benign	0.66	T
Sift4G	Benign	0.57	T
Polyphen		0.97	D
Vest4		0.18
MutPred		0.42		Gain of MoRF binding (P = 0.0241);
MVP		0.77
MPC		2.3
ClinPred		0.36	T
GERP RS		-6.4
Varity_R		0.24
gMVP		0.64

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-65311262;