3-121993223-G-A
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4
The NM_001199799.2(ILDR1):c.1526C>T(p.Pro509Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000434 in 1,614,000 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
Consequence
NM_001199799.2 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000591 AC: 9AN: 152244Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000963 AC: 24AN: 249340Hom.: 0 AF XY: 0.0000814 AC XY: 11AN XY: 135140
GnomAD4 exome AF: 0.0000417 AC: 61AN: 1461638Hom.: 0 Cov.: 41 AF XY: 0.0000413 AC XY: 30AN XY: 727140
GnomAD4 genome AF: 0.0000591 AC: 9AN: 152362Hom.: 0 Cov.: 33 AF XY: 0.0000671 AC XY: 5AN XY: 74506
ClinVar
Submissions by phenotype
not provided Uncertain:3
This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 509 of the ILDR1 protein (p.Pro509Leu). This variant is present in population databases (rs374884043, gnomAD 0.06%). This variant has not been reported in the literature in individuals affected with ILDR1-related conditions. ClinVar contains an entry for this variant (Variation ID: 452275). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. 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. -
Has been observed multiple times in cis with c.1560 C>A p.(G520=) in patients with hearing loss referred to GeneDx for genetic testing; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
BS1_supporting -
not specified Uncertain:1
The p.Pro509Leu variant in ILDR1 has not been previously reported in individuals with hearing loss, but has been identified in 0.06% (12/19922) of East Asian chromosomes by gnomAD (http://gnomad.broadinstitute.org). This variant has also been reported in ClinVar (Variation ID 452275). Computational prediction tools and conservation analysis suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of this variant is uncertain. ACMG/AMP Criteria applied: PM2_Supporting, PP3. -
Inborn genetic diseases Uncertain:1
The c.1526C>T (p.P509L) alteration is located in exon 7 (coding exon 7) of the ILDR1 gene. This alteration results from a C to T substitution at nucleotide position 1526, causing the proline (P) at amino acid position 509 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at