rs876657419

Variant names:

• chr17-74923028-G-A
• rs876657419
• NM_173477.5:c.46C>T

Your query was ambiguous. Multiple possible variants found:

• chr17-74923028-G-A
• chr17-74923028-G-C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_173477.5(USH1G):​c.46C>T​(p.Leu16Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000014 in 1,430,936 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. L16V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: USH1G NM_173477.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.90
• Publications: 0 publications found

Genes affected

USH1G (HGNC:16356): (USH1 protein network component sans) This gene encodes a protein that contains three ankyrin domains, a class I PDZ-binding motif and a sterile alpha motif. The encoded protein interacts with harmonin, which is associated with Usher syndrome type 1C. This protein plays a role in the development and maintenance of the auditory and visual systems and functions in the cohesion of hair bundles formed by inner ear sensory cells. Mutations in this gene are associated with Usher syndrome type 1G (USH1G). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

OTOP2 (HGNC:19657): (otopetrin 2) Predicted to enable proton channel activity. Predicted to be involved in proton transmembrane transport. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

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=0.40971056).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173477.5. 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
	USH1G	NM_173477.5	MANE Select	c.46C>T	p.Leu16Phe	missense	Exon 1 of 3	NP_775748.2
	USH1G	NM_001282489.3		c.-211C>T		5_prime_UTR	Exon 1 of 3	NP_001269418.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	USH1G	ENST00000614341.5	TSL:1 MANE Select	c.46C>T	p.Leu16Phe	missense	Exon 1 of 3	ENSP00000480279.1
	OTOP2	ENST00000580223.2	TSL:1	c.-237G>A		5_prime_UTR	Exon 1 of 5	ENSP00000463837.2
	USH1G	ENST00000579243.1	TSL:2	n.46C>T		non_coding_transcript_exon	Exon 1 of 3	ENSP00000462568.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000140 AC: 2 AN: 1430936 Hom.: 0 Cov.: 31 AF XY: 0.00000141 AC XY: 1 AN XY: 707988

African (AFR) AF: 0.00 AC: 0 AN: 32952

American (AMR) AF: 0.00 AC: 0 AN: 41270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25610

East Asian (EAS) AF: 0.00 AC: 0 AN: 38382

South Asian (SAS) AF: 0.00 AC: 0 AN: 82202

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50934

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5202

European-Non Finnish (NFE) AF: 0.00000183 AC: 2 AN: 1095380

Other (OTH) AF: 0.00 AC: 0 AN: 59004

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	-0.0017	T
BayesDel_noAF	Benign	-0.24
CADD	Pathogenic	30
DANN	Uncertain	0.98
DEOGEN2	Benign	0.32	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.95	D
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.41	T
MetaSVM	Benign	-0.66	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		3.9
PrimateAI	Uncertain	0.70	T
Sift4G	Uncertain	0.0080	D
Polyphen		0.99	D
Vest4		0.43
MutPred		0.48		Loss of disorder (P = 0.0856)
MVP		0.44
ClinPred		0.90	D
GERP RS		4.1
PromoterAI		-0.011	Neutral
Varity_R		0.37
gMVP		0.63
Mutation Taster		=66/34	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

Other links and lift over

dbSNP: rs876657419; hg19: chr17-72919123; COSMIC: COSV104636989; COSMIC: COSV104636989;