chr5-157248901-G-A

Position:

• chr5-157248901-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005546.4(ITK):​c.1685G>A​(p.Arg562Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000133 in 1,613,984 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000098 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00014 (0 hom.)
• Consequence: ITK NM_005546.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.72

Genes affected

ITK (HGNC:6171): (IL2 inducible T cell kinase) This gene encodes an intracellular tyrosine kinase expressed in T-cells. The protein contains both SH2 and SH3 domains which are often found in intracellular kinases. It is thought to play a role in T-cell proliferation and differentiation. [provided by RefSeq, Jul 2008]

ITK (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12777019).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITK	NM_005546.4	c.1685G>A	p.Arg562Gln	missense_variant	16/17	ENST00000422843.8	NP_005537.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITK	ENST00000422843.8	c.1685G>A	p.Arg562Gln	missense_variant	16/17	1	NM_005546.4	ENSP00000398655.4

Frequencies

GnomAD3 genomes AF: 0.000105 AC: 16 AN: 152202 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000943

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000206

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000108 AC: 27 AN: 251158 Hom.: 0 AF XY: 0.0000958 AC XY: 13 AN XY: 135736

Gnomad AFR exome AF: 0.000123

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.0000924

Gnomad NFE exome AF: 0.000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000136 AC: 199 AN: 1461664 Hom.: 0 Cov.: 32 AF XY: 0.000110 AC XY: 80 AN XY: 727146

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000936

Gnomad4 NFE exome AF: 0.000160

Gnomad4 OTH exome AF: 0.000182

GnomAD4 genome AF: 0.0000985 AC: 15 AN: 152320 Hom.: 0 Cov.: 33 AF XY: 0.0000806 AC XY: 6 AN XY: 74486

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000943

Gnomad4 NFE AF: 0.000206

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000156 Hom.: 0

Bravo AF: 0.0000642

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000824 AC: 10

EpiCase AF: 0.000109

EpiControl AF: 0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Lymphoproliferative syndrome 1 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 22, 2022

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 562 of the ITK protein (p.Arg562Gln). This variant is present in population databases (rs142618425, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with ITK-related conditions. ClinVar contains an entry for this variant (Variation ID: 578820). 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 ITK protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.064
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.041	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.64	T
MutationAssessor	Benign	0.56	N
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-0.22	N
REVEL	Benign	0.16
Sift	Benign	0.23	T
Sift4G	Benign	0.25	T
Polyphen		0.23	B
Vest4		0.38
MVP		0.88
MPC		0.46
ClinPred		0.056	T
GERP RS		4.8
Varity_R		0.35
gMVP		0.80

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

Other links and lift over

dbSNP: rs142618425; hg19: chr5-156675911; COSMIC: COSV70064887; COSMIC: COSV70064887;