IL1RAPL1

Chr XXLR

interleukin 1 receptor accessory protein like 1

Also known as: IL-1-RAPL-1, IL-1RAPL-1, IL1R8, IL1RAPL, IL1RAPL-1, MRX10, MRX21, MRX34

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]

OMIMResearchGenerating clinical summary…
LOFmechanismXLRLOEUF 0.201 OMIM phenotype
Clinical SummaryIL1RAPL1
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Gene-Disease Validity (ClinGen)
non-syndromic X-linked intellectual disability · XLDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 1.00). One damaged copy is likely sufficient to cause disease.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint?
0.20LOEUF
pLI 0.999
Z-score 4.36
OE 0.04 (0.010.20)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint?
2.77Z-score
OE missense 0.52 (0.460.60)
140 obs / 267.4 exp
Mild constraint

Moderately missense-constrained (top ~2.5%)

Observed / Expected Ratios?
LoF OE?0.04 (0.010.20)
00.351.4
Missense OE?0.52 (0.460.60)
00.61.4
Synonymous OE?1.00
01.21.6
LoF obs/exp: 1 / 24.1Missense obs/exp: 140 / 267.4Syn Z: -0.01
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveIL1RAPL1-related intellectual developmental disorderLOFXLR

This gene — mechanism propensity

DN
0.3196th %ile
GOF
0.5563th %ile
LOF
0.72top 10%

The highest-scoring mechanism for this gene is loss-of-function (haploinsufficiency).

LOFprediction above median · LOEUF 0.20 · ClinGen HI: Sufficient evidence for dosage pathogenicity

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

IL1RAPL1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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