18-46521271-G-T

Variant names:

• chr18-46521271-G-T
• rs375851293
• NM_001384474.1:c.5097C>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_001384474.1(LOXHD1):​c.5097C>A​(p.Asp1699Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000387 in 1,551,534 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1699A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000036 (0 hom.)
• Consequence: LOXHD1 NM_001384474.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.21
• 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: 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

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.33774412).

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LOXHD1	NM_001384474.1	MANE Select	c.5097C>A	p.Asp1699Glu	missense	Exon 33 of 41	NP_001371403.1
	LOXHD1	NM_001145472.3		c.1764C>A	p.Asp588Glu	missense	Exon 15 of 24	NP_001138944.1
	LOXHD1	NM_001308013.2		c.1476C>A	p.Asp492Glu	missense	Exon 13 of 22	NP_001294942.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LOXHD1	ENST00000642948.1	MANE Select	c.5097C>A	p.Asp1699Glu	missense	Exon 33 of 41	ENSP00000496347.1
	LOXHD1	ENST00000300591.11	TSL:1	c.1764C>A	p.Asp588Glu	missense	Exon 15 of 24	ENSP00000300591.6
	LOXHD1	ENST00000579038.6	TSL:1	c.1476C>A	p.Asp492Glu	missense	Exon 13 of 22	ENSP00000463285.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152166 Hom.: 0 Cov.: 32

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: 0.00000357 AC: 5 AN: 1399368 Hom.: 0 Cov.: 31 AF XY: 0.00000580 AC XY: 4 AN XY: 690182

African (AFR) AF: 0.00 AC: 0 AN: 31596

American (AMR) AF: 0.00 AC: 0 AN: 35704

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 35734

South Asian (SAS) AF: 0.00 AC: 0 AN: 79234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49256

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5698

European-Non Finnish (NFE) AF: 0.00000463 AC: 5 AN: 1078954

Other (OTH) AF: 0.00 AC: 0 AN: 58010

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152166 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74324

African (AFR) AF: 0.0000241 AC: 1 AN: 41444

American (AMR) AF: 0.00 AC: 0 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.89
BayesDel_addAF	Benign	0.0053	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	0.13
DANN	Uncertain	0.99
Eigen	Benign	-0.56
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.090	N
LIST_S2	Benign	0.84	T
M_CAP	Uncertain	0.27	D
MetaRNN	Benign	0.34	T
MetaSVM	Uncertain	0.18	D
PhyloP100		-2.2
PROVEAN	Benign	-1.9	N
REVEL	Uncertain	0.53
Sift	Uncertain	0.014	D
Sift4G	Uncertain	0.017	D
Vest4		0.64
MVP		0.10
ClinPred		0.54	D
GERP RS		-7.3
Varity_R		0.069
Mutation Taster		=69/31	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs375851293; hg19: chr18-44101234;