chrX-28789368-A-G

Position:

• chrX-28789368-A-G

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_014271.4(IL1RAPL1):​c.25A>G​(p.Ile9Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000146 in 1,096,044 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 7 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.000015 (0 hom. 7 hem.)
• Consequence: IL1RAPL1 NM_014271.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.09

Genes affected

IL1RAPL1 (HGNC:5996): (interleukin 1 receptor accessory protein like 1) The protein encoded by this gene is a member of the interleukin 1 receptor family and is similar to the interleukin 1 accessory proteins. This protein has an N-terminal signal peptide, three extracellular immunoglobulin Ig-like domains, a transmembrane domain, an intracellular Toll/IL-1R domain, and a long C-terminal tail which interacts with multiple signalling molecules. This gene is located at a region on chromosome X that is associated with a non-syndromic form of X-linked intellectual disability. Deletions and mutations in this gene were found in patients with intellectual disability. This gene is expressed at a high level in post-natal brain structures involved in the hippocampal memory system, which suggests a specialized role in the physiological processes underlying memory and learning abilities, and plays a role in synapse formation and stabilization. [provided by RefSeq, Jul 2017]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.16469291).
• BS2: High Hemizygotes in GnomAdExome4 at 7 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL1RAPL1	NM_014271.4	c.25A>G	p.Ile9Val	missense_variant	2/11	ENST00000378993.6
IL1RAPL1	XM_017029240.2	c.25A>G	p.Ile9Val	missense_variant	2/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL1RAPL1	ENST00000378993.6	c.25A>G	p.Ile9Val	missense_variant	2/11	1	NM_014271.4	P1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome AF: 0.0000146 AC: 16 AN: 1096044 Hom.: 0 Cov.: 29 AF XY: 0.0000194 AC XY: 7 AN XY: 361526

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000190

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 29, 2023

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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant  is likely to be tolerated. This variant has not been reported in the literature in individuals affected with IL1RAPL1-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 9 of the IL1RAPL1 protein (p.Ile9Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.084
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.18	T
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.0038	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.93	T
MutationAssessor	Benign	1.4	L
MutationTaster	Benign	0.99	N;N
PrimateAI	Pathogenic	0.81	D
PROVEAN	Benign	-0.12	N
REVEL	Benign	0.059
Sift	Benign	0.14	T
Sift4G	Benign	0.45	T
Polyphen		0.028	B
Vest4		0.30
MutPred		0.29		Gain of loop (P = 0.2045);
MVP		0.50
MPC		0.71
ClinPred		0.19	T
GERP RS		4.6
Varity_R		0.11
gMVP		0.40

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-28807485;