chr10-5956410-C-T

Position:

• chr10-5956410-C-T

Variant summary

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

The NM_002189.4(IL15RA):​c.661G>A​(p.Val221Met) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: IL15RA NM_002189.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.647

Genes affected

IL15RA (HGNC:5978): (interleukin 15 receptor subunit alpha) This gene encodes a cytokine receptor that specifically binds interleukin 15 (IL15) with high affinity. The receptors of IL15 and IL2 share two subunits, IL2R beta and IL2R gamma. This forms the basis of many overlapping biological activities of IL15 and IL2. The protein encoded by this gene is structurally related to IL2R alpha, an additional IL2-specific alpha subunit necessary for high affinity IL2 binding. Unlike IL2RA, IL15RA is capable of binding IL15 with high affinity independent of other subunits, which suggests distinct roles between IL15 and IL2. This receptor is reported to enhance cell proliferation and expression of apoptosis inhibitor BCL2L1/BCL2-XL and BCL2. Multiple alternatively spliced transcript variants of this gene have been reported.[provided by RefSeq, Apr 2010]

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=0.11519021).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL15RA	NM_002189.4	c.661G>A	p.Val221Met	missense_variant	6/7	ENST00000379977.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL15RA	ENST00000379977.8	c.661G>A	p.Val221Met	missense_variant	6/7	1	NM_002189.4	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 07, 2023

The c.661G>A (p.V221M) alteration is located in exon 6 (coding exon 6) of the IL15RA gene. This alteration results from a G to A substitution at nucleotide position 661, causing the valine (V) at amino acid position 221 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	1.7
DANN	Benign	0.90
DEOGEN2	Benign	0.021	.;T;T;.;.;.;.;.;T;.;.;T
Eigen	Benign	-0.87
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.014	N
LIST_S2	Benign	0.78	T;T;T;T;T;T;T;T;T;T;T;T
M_CAP	Benign	0.0079	T
MetaRNN	Benign	0.12	T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.90	.;.;L;.;.;.;.;.;.;.;L;.
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.88	.;.;N;.;.;N;N;N;.;N;N;.
REVEL	Benign	0.070
Sift	Benign	0.16	.;.;T;.;.;T;T;T;.;T;T;.
Sift4G	Benign	0.066	T;D;T;T;T;D;T;D;T;D;T;D
Polyphen		0.43	.;.;B;.;.;B;.;.;.;.;.;.
Vest4		0.13
MutPred		0.27		.;.;Loss of catalytic residue at V221 (P = 5e-04);.;.;.;.;.;.;.;Loss of catalytic residue at V221 (P = 5e-04);.;
MVP		0.44
MPC		0.11
ClinPred		0.19	T
GERP RS		-0.080
Varity_R		0.021
gMVP		0.20

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1471039577; hg19: chr10-5998373;