22-17085065-C-G

Variant names:

• chr22-17085065-C-G
• rs886057199
• NM_014339.7:c.-27C>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BS1_Supporting

The NM_014339.7(IL17RA):​c.-27C>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000164 in 1,295,682 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000079 (0 hom., cov: 35)
  • Exomes 𝑓: 0.00017 (0 hom.)
• Consequence: IL17RA NM_014339.7 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.14
• Publications: 0 publications found

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]

IL17RA Gene-Disease associations (from GenCC):

• immunodeficiency 51

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• chronic mucocutaneous candidiasis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.7).
• BS1: Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.000175 (200/1143490) while in subpopulation NFE AF = 0.000202 (193/953482). AF 95% confidence interval is 0.000179. There are 0 homozygotes in GnomAdExome4. There are 86 alleles in the male GnomAdExome4 subpopulation. Median coverage is 37. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL17RA	NM_014339.7	c.-27C>G		5_prime_UTR_variant	Exon 1 of 13	ENST00000319363.11	NP_055154.3
IL17RA	NM_001289905.2	c.-27C>G		5_prime_UTR_variant	Exon 1 of 12		NP_001276834.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL17RA	ENST00000319363.11	c.-27C>G		5_prime_UTR_variant	Exon 1 of 13	1	NM_014339.7	ENSP00000320936.6

Frequencies

GnomAD3 genomes AF: 0.0000788 AC: 12 AN: 152192 Hom.: 0 Cov.: 35

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00 AC: 0 AN: 1072 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000175 AC: 200 AN: 1143490 Hom.: 0 Cov.: 37 AF XY: 0.000157 AC XY: 86 AN XY: 548982

African (AFR) AF: 0.00 AC: 0 AN: 23154

American (AMR) AF: 0.00 AC: 0 AN: 8588

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 15270

East Asian (EAS) AF: 0.00 AC: 0 AN: 26706

South Asian (SAS) AF: 0.00 AC: 0 AN: 39524

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 25906

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4648

European-Non Finnish (NFE) AF: 0.000202 AC: 193 AN: 953482

Other (OTH) AF: 0.000151 AC: 7 AN: 46212

GnomAD4 genome AF: 0.0000788 AC: 12 AN: 152192 Hom.: 0 Cov.: 35 AF XY: 0.0000403 AC XY: 3 AN XY: 74354

African (AFR) AF: 0.0000241 AC: 1 AN: 41454

American (AMR) AF: 0.00 AC: 0 AN: 15288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000831

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Immunodeficiency 51 Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.70
CADD	Benign	14
DANN	Benign	0.84
PhyloP100		1.1
PromoterAI		0.097	Neutral

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: rs886057199; hg19: chr22-17565955;