rs753883526

Positions:

• chr22-17109458-C-A
• chr22-17109458-C-G
• chr22-17109458-C-T

Variant summary

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

The NM_014339.7(IL17RA):​c.2239C>A​(p.His747Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,828 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★). Synonymous variant affecting the same amino acid position (i.e. H747H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: IL17RA NM_014339.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.06

Genes affected

IL17RA (HGNC:5985): (interleukin 17 receptor A) Interleukin 17A (IL17A) is a proinflammatory cytokine secreted by activated T-lymphocytes. It is a potent inducer of the maturation of CD34-positive hematopoietic precursors into neutrophils. The transmembrane protein encoded by this gene (interleukin 17A receptor; IL17RA) is a ubiquitous type I membrane glycoprotein that binds with low affinity to interleukin 17A. Interleukin 17A and its receptor play a pathogenic role in many inflammatory and autoimmune diseases such as rheumatoid arthritis. Like other cytokine receptors, this receptor likely has a multimeric structure. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2014]

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=0.10363284).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL17RA	NM_014339.7	c.2239C>A	p.His747Asn	missense_variant	13/13	ENST00000319363.11
IL17RA	NM_001289905.2	c.2137C>A	p.His713Asn	missense_variant	12/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL17RA	ENST00000319363.11	c.2239C>A	p.His747Asn	missense_variant	13/13	1	NM_014339.7	P2
IL17RA	ENST00000612619.2	c.2137C>A	p.His713Asn	missense_variant	12/12	5		A2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460828 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 726666

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Immunodeficiency 51 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 01, 2022

This sequence change replaces histidine, which is basic and polar, with asparagine, which is neutral and polar, at codon 747 of the IL17RA protein (p.His747Asn). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with IL17RA-related conditions. ClinVar contains an entry for this variant (Variation ID: 542917). 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 IL17RA 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	0.075
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	19
DANN	Benign	0.93
DEOGEN2	Benign	0.17	T;.
Eigen	Benign	-0.44
Eigen_PC	Benign	-0.33
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.66	T;T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.10	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.55	N;.
MutationTaster	Benign	0.80	N;N
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-0.31	N;.
REVEL	Benign	0.038
Sift	Uncertain	0.028	D;.
Sift4G	Uncertain	0.052	T;T
Polyphen		0.026	B;.
Vest4		0.097
MutPred		0.24		Gain of relative solvent accessibility (P = 0.1259);.;
MVP		0.14
MPC		0.21
ClinPred		0.36	T
GERP RS		4.5
Varity_R		0.13
gMVP		0.22

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: rs753883526; hg19: chr22-17590348;