rs727503151

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_001384474.1(LOXHD1):c.811C>T(p.Arg271Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000258 in 1,551,616 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

LOXHD1
NM_001384474.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 8.00

Publications

4 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

LOXHD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PP3

MetaRNN computational evidence supports a deleterious effect, 0.797

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LOXHD1	NM_001384474.1 link	c.811C>T	p.Arg271Cys	missense_variant	Exon 7 of 41	ENST00000642948.1	NP_001371403.1
LOXHD1	NM_144612.7 link	c.811C>T	p.Arg271Cys	missense_variant	Exon 7 of 40		NP_653213.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
LOXHD1	ENST00000642948.1 link	c.811C>T	p.Arg271Cys	missense_variant	Exon 7 of 41		NM_001384474.1	ENSP00000496347.1
LOXHD1	ENST00000536736.5 link	c.811C>T	p.Arg271Cys	missense_variant	Exon 7 of 40	5		ENSP00000444586.1
LOXHD1	ENST00000441551.6 link	c.811C>T	p.Arg271Cys	missense_variant	Exon 7 of 39	5		ENSP00000387621.2

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000320

AC:

AN:

156428

AF XY:

0.0000121

show subpopulations

Gnomad AFR exome

AF:

0.000252

Gnomad AMR exome

AF:

0.0000810

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000157

AC:

AN:

1399400

Hom.:

Cov.:

AF XY:

0.0000145

AC XY:

AN XY:

690206

show subpopulations

African (AFR)

AF:

0.000380

AC:

AN:

31598

American (AMR)

AF:

0.0000840

AC:

AN:

35704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25180

East Asian (EAS)

AF:

0.00

AC:

AN:

35736

South Asian (SAS)

AF:

0.0000126

AC:

AN:

79236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49282

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00000556

AC:

AN:

1078962

Other (OTH)

AF:

0.00

AC:

AN:

58004

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000118

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74358

show subpopulations

African (AFR)

AF:

0.000362

AC:

AN:

41450

American (AMR)

AF:

0.000131

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68046

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000279

Hom.:

Bravo

AF:

0.000117

ExAC

AF:

0.0000394

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 77

Uncertain:2

Feb 21, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Mar 30, 2018

Counsyl

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

not specified

Uncertain:1

Nov 07, 2014

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Arg271Cys variant in LOXHD1 has not been previously reported in individual s with hearing loss and was absent from large population studies. Computational prediction tools and conservation analysis suggest that this variant may impact the protein, though this information is not predictive enough to determine patho genicity. In summary, the clinical significance of the p.Arg271Cys variant is un certain. -

Hearing impairment

Uncertain:1

Apr 12, 2021

Department of Otolaryngology – Head & Neck Surgery, Cochlear Implant Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PM2_Moderate, PP3_Supporting -

not provided

Uncertain:1

Sep 24, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine with cysteine at codon 271 of the LOXHD1 protein (p.Arg271Cys). The arginine residue is weakly conserved and there is a large physicochemical difference between arginine and cysteine. This variant is present in population databases (rs727503151, ExAC 0.01%). This variant has not been reported in the literature in individuals with LOXHD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 163936). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). 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

Uncertain

0.47

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Pathogenic

0.25

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Pathogenic

0.82

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.80

D;D;D

MetaSVM

Uncertain

-0.18

PhyloP100

8.0

PrimateAI

Uncertain

0.69

PROVEAN

Pathogenic

-4.6

D;.;.

REVEL

Pathogenic

0.76

Sift

Benign

0.053

T;.;.

Sift4G

Pathogenic

0.0010

D;.;D

Polyphen

1.0

D;.;.

Vest4

0.68

MVP

0.49

ClinPred

0.65

GERP RS

5.8

Varity_R

0.20

gMVP

0.51

Mutation Taster

=43/57

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over