chr2-102340704-C-G

Variant names:

• chr2-102340704-C-G
• rs189627011
• NM_016232.5:c.486C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_016232.5(IL1RL1):​c.486C>G​(p.His162Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,447,072 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: IL1RL1 NM_016232.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.19
• Publications: 0 publications found

Genes affected

IL1RL1 (HGNC:5998): (interleukin 1 receptor like 1) The protein encoded by this gene is a member of the interleukin 1 receptor family. Studies of the similar gene in mouse suggested that this receptor can be induced by proinflammatory stimuli, and may be involved in the function of helper T cells. This gene, interleukin 1 receptor, type I (IL1R1), interleukin 1 receptor, type II (IL1R2) and interleukin 1 receptor-like 2 (IL1RL2) form a cytokine receptor gene cluster in a region mapped to chromosome 2q12. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jul 2008]

IL18R1 (HGNC:5988): (interleukin 18 receptor 1) The protein encoded by this gene is a cytokine receptor that belongs to the interleukin 1 receptor family. This receptor specifically binds interleukin 18 (IL18), and is essential for IL18 mediated signal transduction. IFN-alpha and IL12 are reported to induce the expression of this receptor in NK and T cells. This gene along with four other members of the interleukin 1 receptor family, including IL1R2, IL1R1, ILRL2 (IL-1Rrp2), and IL1RL1 (T1/ST2), form a gene cluster on chromosome 2q. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15030414).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL1RL1	NM_016232.5	c.486C>G	p.His162Gln	missense_variant	Exon 5 of 11	ENST00000233954.6	NP_057316.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL1RL1	ENST00000233954.6	c.486C>G	p.His162Gln	missense_variant	Exon 5 of 11	1	NM_016232.5	ENSP00000233954.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000425 AC: 1 AN: 235296 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: 6.91e-7 AC: 1 AN: 1447072 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 719958

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 32220

American (AMR) AF: 0.00 AC: 0 AN: 40024

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25560

East Asian (EAS) AF: 0.00 AC: 0 AN: 38918

South Asian (SAS) AF: 0.00 AC: 0 AN: 83576

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53310

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5730

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1107900

Other (OTH) AF: 0.0000167 AC: 1 AN: 59834

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	0.70
DANN	Benign	0.96
DEOGEN2	Benign	0.12	.;T;.;T
Eigen	Benign	-0.75
Eigen_PC	Benign	-0.83
FATHMM_MKL	Benign	0.032	N
LIST_S2	Benign	0.38	T;T;T;T
M_CAP	Benign	0.0089	T
MetaRNN	Benign	0.15	T;T;T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	1.5	.;L;L;.
PhyloP100		-2.2
PrimateAI	Benign	0.36	T
PROVEAN	Uncertain	-3.5	D;D;D;D
REVEL	Benign	0.047
Sift	Uncertain	0.028	D;T;D;D
Sift4G	Uncertain	0.011	D;T;D;D
Polyphen		0.31, 0.70	.;B;P;.
Vest4		0.23
MutPred		0.34		.;Loss of catalytic residue at R160 (P = 0.1359);Loss of catalytic residue at R160 (P = 0.1359);Loss of catalytic residue at R160 (P = 0.1359);
MVP		0.73
MPC		0.012
ClinPred		0.21	T
GERP RS		-0.13
Varity_R		0.23
gMVP		0.45
Mutation Taster		=80/20	polymorphism

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

Other links and lift over

dbSNP: rs189627011; hg19: chr2-102957164;