NM_001384474.1:c.1810-6C>A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_001384474.1(LOXHD1):c.1810-6C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000767 in 1,551,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000080 ( 0 hom. )

Consequence

LOXHD1
NM_001384474.1 splice_region, intron

Scores

Splicing: ADA: 0.0003566

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: 0.0200

Publications

0 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: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant 18-46577873-G-T is Benign according to our data. Variant chr18-46577873-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 178994.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LOXHD1	NM_001384474.1 link	c.1810-6C>A		splice_region_variant, intron_variant	Intron 13 of 40	ENST00000642948.1	NP_001371403.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
LOXHD1	ENST00000642948.1 link	c.1810-6C>A	splice_region_variant, intron_variant	Intron 13 of 40		NM_001384474.1	ENSP00000496347.1	A0A2R8Y7K4
LOXHD1	ENST00000536736.5 link	c.1810-6C>A	splice_region_variant, intron_variant	Intron 13 of 39	5		ENSP00000444586.1	F5GZB4
LOXHD1	ENST00000441551.6 link	c.1810-6C>A	splice_region_variant, intron_variant	Intron 13 of 38	5		ENSP00000387621.2	Q8IVV2-1
LOXHD1	ENST00000335730.6 link	n.1123-6C>A	splice_region_variant, intron_variant	Intron 6 of 26	2

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151982

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000101

AC:

AN:

157704

AF XY:

0.000108

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000808

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000165

Gnomad OTH exome

AF:

0.000225

GnomAD4 exome

AF:

0.0000800

AC:

112

AN:

1399288

Hom.:

Cov.:

AF XY:

0.0000811

AC XY:

AN XY:

690140

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31598

American (AMR)

AF:

0.0000840

AC:

AN:

35704

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25176

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.000177

AC:

AN:

79228

European-Finnish (FIN)

AF:

0.0000203

AC:

AN:

49214

Middle Eastern (MID)

AF:

0.000351

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.0000704

AC:

AN:

1078932

Other (OTH)

AF:

0.000259

AC:

AN:

58000

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

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:

0.0000461

AC:

AN:

151982

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74214

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41366

American (AMR)

AF:

0.00

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4808

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68000

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.539

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:

0.000158

Hom.:

Bravo

AF:

0.0000529

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Autosomal recessive nonsyndromic hearing loss 77

Uncertain:2

Nov 11, 2019

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Aug 15, 2017

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 provided

Benign:2

Apr 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

LOXHD1: BP4 -

Mar 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

Jun 11, 2013

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 1810-6C>A varia nt in LOXHD1 has not been reported in individuals affected with hearing loss, bu t has been identified in 0.3% (1/339) of European chromosomes by the ClinSeq Pro ject (dbSNP rs199804946). Although this variant has been seen in the general pop ulation, its frequency is not high enough to rule out a pathogenic role. This va riant is located in the 3' splice region but does not affect the invariant -1 an d -2 positions. Computational tools do not suggest an impact to splicing; howeve r, this information is not predictive enough to rule out pathogenicity. In summa ry, the clinical significance of this variant cannot be determined with certaint y; however based upon the computational data, we lean towards a more likely beni gn role. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

0.78

(source)

DANN

Benign

0.54

PhyloP100

0.020

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00036

dbscSNV1_RF

Benign

0.076

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