18-46522229-C-T

Position:

chr18-46522229-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_001384474.1(LOXHD1):c.4957G>A(p.Gly1653Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000213 in 1,551,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

LOXHD1
NM_001384474.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 7.78

Variant links:

Genes affected

LOXHD1 (HGNC:26521): (lipoxygenase homology PLAT domains 1) This gene encodes a highly conserved protein consisting entirely of PLAT (polycystin/lipoxygenase/alpha-toxin) domains, thought to be involved in targeting proteins to the plasma membrane. Studies in mice show that this gene is expressed in the mechanosensory hair cells in the inner ear, and mutations in this gene lead to auditory defects, indicating that this gene is essential for normal hair cell function. Screening of human families segregating deafness identified a mutation in this gene which causes DFNB77, a progressive form of autosomal-recessive nonsyndromic hearing loss (ARNSHL). Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Mar 2010]

LOXHD1 links:

LOXHD1 (HGNC:):

LOXHD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.962

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LOXHD1	NM_001384474.1 linkuse as main transcript	c.4957G>A	p.Gly1653Arg	missense_variant	32/41	ENST00000642948.1	NP_001371403.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LOXHD1	ENST00000642948.1 linkuse as main transcript	c.4957G>A	p.Gly1653Arg	missense_variant	32/41		NM_001384474.1	ENSP00000496347.1		A0A2R8Y7K4

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000314

AC:

AN:

159262

Hom.:

AF XY:

0.0000239

AC XY:

AN XY:

83720

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000884

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000649

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000200

AC:

AN:

1399556

Hom.:

Cov.:

AF XY:

0.0000188

AC XY:

AN XY:

690274

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000280

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000250

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000163

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jan 12, 2016

The p.Gly1653Arg variant in LOXHD1 has been previously identified by our laborat ory in 1 Caucasian individual with hearing loss. It has not been reported in lar ge population studies. Computational prediction tools suggest that it may create a cryptic splice site, though this information is not predictive enough to dete rmine pathogenicity. In summary, the clinical significance of the p.Gly1653Arg v ariant is uncertain. -

Autosomal recessive nonsyndromic hearing loss 77

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Oct 28, 2019

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 04, 2024

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1653 of the LOXHD1 protein (p.Gly1653Arg). This variant is present in population databases (rs374897301, gnomAD 0.008%). This missense change has been observed in individual(s) with autosomal recessive nonsyndromic deafness (Invitae). ClinVar contains an entry for this variant (Variation ID: 179342). 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 disruptive. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.28

BayesDel_noAF

Pathogenic

0.36

CADD

Pathogenic

DANN

Benign

0.92

DEOGEN2

Benign

0.27

.;.;T;.;.;.

Eigen

Pathogenic

0.79

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

D;D;D;D;D;D

M_CAP

Pathogenic

0.68

MetaRNN

Pathogenic

0.96

D;D;D;D;D;D

MetaSVM

Uncertain

0.79

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-6.4

.;D;.;D;.;.

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

.;D;.;D;.;.

Sift4G

Pathogenic

0.0

D;D;D;D;.;D

Polyphen

1.0

.;.;.;D;.;.

Vest4

0.95

MutPred

0.70

.;.;.;Loss of sheet (P = 7e-04);Loss of sheet (P = 7e-04);.;

MVP

0.57

ClinPred

0.96

GERP RS

5.0

Varity_R

0.41

gMVP

0.95

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.70

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.70

Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over