NM_001199799.2:c.1137G>C

Variant names:

• chr3-121993612-C-G
• rs1553743343
• NM_001199799.2:c.1137G>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001199799.2(ILDR1):​c.1137G>C​(p.Glu379Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,894 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: ILDR1 NM_001199799.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.198
• Publications: 0 publications found

Genes affected

ILDR1 (HGNC:28741): (immunoglobulin like domain containing receptor 1) This gene encodes a protein that contains an immunoglobulin-like domain. The encoded protein may function as a multimeric receptor at the cell surface. The expression of this gene may be a diagnostic marker for cancer progression. Alternatively spliced transcript variants encoding multiple protein isoforms have been observed for this gene. [provided by RefSeq, Dec 2010]

ILDR1 Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 42

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06695205).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ILDR1	NM_001199799.2	c.1137G>C	p.Glu379Asp	missense_variant	Exon 7 of 8	ENST00000344209.10	NP_001186728.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ILDR1	ENST00000344209.10	c.1137G>C	p.Glu379Asp	missense_variant	Exon 7 of 8	1	NM_001199799.2	ENSP00000345667.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461894 Hom.: 0 Cov.: 41 AF XY: 0.00000550 AC XY: 4 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1112012

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jul 11, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant classified as Uncertain Significance - Favor Benign. The p.Glu379Asp var iant in ILDR1 has not been previously reported in individuals with hearing loss or in large population studies. The glutamic acid (Glu) at position 379 is not c onserved across mammals or evolutionary distant species, with 2 mammals (lesser Egyptian jerboa, star-nosed mole) having an aspartic acid (Asp), supporting that the change at this position may be tolerated. Additional computational predicti on tools suggest that this variant may not impact the protein, though this infor mation is not predictive enough to rule out pathogenicity. In summary, while the clinical significance of the p.Glu379Asp variant is uncertain, available data s uggest that it is more likely to be benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.10	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	11
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0055	.;T;T;.
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.12	N
LIST_S2	Benign	0.74	T;.;T;T
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.067	T;T;T;T
MetaSVM	Benign	-0.66	T
MutationAssessor	Uncertain	2.6	.;M;M;.
PhyloP100		-0.20
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.030	N;N;.;N
REVEL	Benign	0.077
Sift	Uncertain	0.021	D;T;.;D
Sift4G	Benign	0.27	T;T;.;T
Polyphen		0.57	P;B;B;D
Vest4		0.19
MutPred		0.23		.;Loss of helix (P = 0.2271);Loss of helix (P = 0.2271);.;
MVP		0.79
MPC		0.039
ClinPred		0.34	T
GERP RS		2.8
Varity_R		0.041
gMVP		0.14
Mutation Taster		=96/4	polymorphism

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

Other links and lift over

dbSNP: rs1553743343; hg19: chr3-121712459;