rs374474061

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001384474.1(LOXHD1):​c.4082G>T​(p.Arg1361Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000131 in 1,532,162 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1361H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

LOXHD1
NM_001384474.1 missense

Scores

5
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.92

Publications

2 publications found
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 Gene-Disease associations (from GenCC):
  • autosomal recessive nonsyndromic hearing loss 77
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • nonsyndromic genetic hearing loss
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • hearing loss, autosomal recessive
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Fuchs' endothelial dystrophy
    Inheritance: AD Classification: LIMITED Submitted by: Illumina

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.33518243).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
LOXHD1NM_001384474.1 linkc.4082G>T p.Arg1361Leu missense_variant Exon 26 of 41 ENST00000642948.1 NP_001371403.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
LOXHD1ENST00000642948.1 linkc.4082G>T p.Arg1361Leu missense_variant Exon 26 of 41 NM_001384474.1 ENSP00000496347.1 A0A2R8Y7K4

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152174
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
7.25e-7
AC:
1
AN:
1379988
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
675814
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31292
American (AMR)
AF:
0.00
AC:
0
AN:
35434
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24996
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35110
South Asian (SAS)
AF:
0.00
AC:
0
AN:
78786
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49018
Middle Eastern (MID)
AF:
0.000180
AC:
1
AN:
5542
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1062782
Other (OTH)
AF:
0.00
AC:
0
AN:
57028
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152174
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74332
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000241
AC:
1
AN:
41424
American (AMR)
AF:
0.00
AC:
0
AN:
15276
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5198
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4818
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10620
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68046
Other (OTH)
AF:
0.00
AC:
0
AN:
2094
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.325
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Uncertain:1
Jun 21, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

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 tolerated. This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 1361 of the LOXHD1 protein (p.Arg1361Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with LOXHD1-related conditions. 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
Benign
0.27
BayesDel_addAF
Benign
-0.049
T
BayesDel_noAF
Benign
-0.31
CADD
Uncertain
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.016
.;.;T;.;.;.
Eigen
Uncertain
0.42
Eigen_PC
Uncertain
0.47
FATHMM_MKL
Uncertain
0.84
D
LIST_S2
Uncertain
0.96
D;D;D;D;D;D
M_CAP
Benign
0.048
D
MetaRNN
Benign
0.34
T;T;T;T;T;T
MetaSVM
Benign
-0.62
T
PhyloP100
3.9
PrimateAI
Benign
0.25
T
PROVEAN
Benign
-1.6
.;N;.;N;.;.
REVEL
Benign
0.28
Sift
Benign
0.37
.;T;.;T;.;.
Sift4G
Benign
0.49
T;T;T;T;.;T
Polyphen
0.86
.;.;.;P;.;.
Vest4
0.50
MutPred
0.63
.;.;.;Gain of ubiquitination at K1357 (P = 0.0337);Gain of ubiquitination at K1357 (P = 0.0337);.;
MVP
0.28
ClinPred
0.86
D
GERP RS
5.4
Varity_R
0.17
gMVP
0.70
Mutation Taster
=74/26
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

Publications

Other links and lift over

dbSNP: rs374474061; hg19: chr18-44118132; API