18-46601424-C-A

Variant names:

• chr18-46601424-C-A
• rs749677224
• NM_001384474.1:c.927G>T

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_Moderate BP6_Very_Strong BP7

The NM_001384474.1(LOXHD1):​c.927G>T​(p.Gly309Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000129 in 1,399,434 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. G309G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: LOXHD1 NM_001384474.1 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.80
• Publications: 0 publications found

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: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• 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

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• BP4: Computational evidence support a benign effect (REVEL=0.066).
• BP6: Variant 18-46601424-C-A is Benign according to our data. Variant chr18-46601424-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 505262.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.8 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001384474.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LOXHD1	NM_001384474.1	MANE Select	c.927G>T	p.Gly309Gly	synonymous	Exon 8 of 41	NP_001371403.1	A0A2R8Y7K4
	LOXHD1	NM_144612.7		c.927G>T	p.Gly309Gly	synonymous	Exon 8 of 40	NP_653213.6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LOXHD1	ENST00000642948.1	MANE Select	c.927G>T	p.Gly309Gly	synonymous	Exon 8 of 41	ENSP00000496347.1	A0A2R8Y7K4
	LOXHD1	ENST00000536736.5	TSL:5	c.927G>T	p.Gly309Gly	synonymous	Exon 8 of 40	ENSP00000444586.1	F5GZB4
	LOXHD1	ENST00000441551.6	TSL:5	c.927G>T	p.Gly309Gly	synonymous	Exon 8 of 39	ENSP00000387621.2	Q8IVV2-1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD2 exomes AF: 0.0000378 AC: 6 AN: 158570 AF XY: 0.0000359

Gnomad AFR exome AF: 0.000115

Gnomad AMR exome AF: 0.0000404

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000491

Gnomad OTH exome AF: 0.000224

GnomAD4 exome AF: 0.0000129 AC: 18 AN: 1399434 Hom.: 0 Cov.: 32 AF XY: 0.00000869 AC XY: 6 AN XY: 690222

African (AFR) AF: 0.000127 AC: 4 AN: 31598

American (AMR) AF: 0.0000560 AC: 2 AN: 35704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25182

East Asian (EAS) AF: 0.00 AC: 0 AN: 35738

South Asian (SAS) AF: 0.00 AC: 0 AN: 79236

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49284

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5700

European-Non Finnish (NFE) AF: 0.0000102 AC: 11 AN: 1078986

Other (OTH) AF: 0.0000172 AC: 1 AN: 58006

GnomAD4 genome Cov.: 31

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000227

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.71
CADD	Benign	1.0
DANN	Benign	0.45
PhyloP100		-1.8

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: rs749677224; hg19: chr18-44181387;