ILDR1

Chr 3AR

immunoglobulin like domain containing receptor 1

Also known as: DFNB42, ILDR1alpha, ILDR1alpha', ILDR1beta

The ILDR1 protein maintains epithelial barrier function by recruiting tricellulin to tricellular tight junctions and is crucial for preserving the structural integrity of these junctions in auditory hair cells. Mutations cause autosomal recessive deafness (DFNB42), affecting hearing through disruption of inner ear epithelial barriers. The gene shows minimal constraint against loss-of-function variants (very low pLI score), consistent with its recessive inheritance pattern.

OMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 1.061 OMIM phenotype
Clinical SummaryILDR1
🧬
Gene-Disease Validity (ClinGen)
nonsyndromic genetic hearing loss · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.06LOEUF
pLI 0.000
Z-score 1.28
OE 0.75 (0.531.06)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
-0.26Z-score
OE missense 1.04 (0.951.14)
347 obs / 333.8 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.75 (0.531.06)
00.351.4
Missense OE1.04 (0.951.14)
00.61.4
Synonymous OE1.04
01.21.6
LoF obs/exp: 22 / 29.5Missense obs/exp: 347 / 333.8Syn Z: -0.35
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitiveILDR1-related deafnessLOFAR

Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.

DN
0.75top 25%
GOF
0.6834th %ile
LOF
0.3647th %ile

The Badonyi & Marsh prediction model was trained exclusively on dominant disease genes. Predictions are not reliable for genes with autosomal recessive inheritance and are shown at reduced opacity for reference only.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

ILDR1 · protein map & ClinVar variants

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

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Open Research Assistant →