rs1085307049

Variant names:

• chr3-150928173-CAAT-C
• rs1085307049
• NM_174878.3:c.459_461delATT

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PM4_Supporting PP5_Moderate

The NM_174878.3(CLRN1):​c.459_461delATT​(p.Ile153_Leu154delinsMet) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CLRN1 NM_174878.3 disruptive_inframe_deletion
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 8.17

Genes affected

CLRN1 (HGNC:12605): (clarin 1) This gene encodes a protein that contains a cytosolic N-terminus, multiple helical transmembrane domains, and an endoplasmic reticulum membrane retention signal, TKGH, in the C-terminus. The encoded protein may be important in development and homeostasis of the inner ear and retina. Mutations within this gene have been associated with Usher syndrome type IIIa. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

ENSG00000260234 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM1: In a chain Clarin-1 (size 231) in uniprot entity CLRN1_HUMAN there are 22 pathogenic changes around while only 1 benign (96%) in NM_174878.3
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_174878.3. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 3-150928173-CAAT-C is Pathogenic according to our data. Variant chr3-150928173-CAAT-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 4394.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr3-150928173-CAAT-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLRN1	NM_174878.3	c.459_461delATT	p.Ile153_Leu154delinsMet	disruptive_inframe_deletion	Exon 3 of 3	ENST00000327047.6	NP_777367.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLRN1	ENST00000327047.6	c.459_461delATT	p.Ile153_Leu154delinsMet	disruptive_inframe_deletion	Exon 3 of 3	1	NM_174878.3	ENSP00000322280.1
ENSG00000260234	ENST00000569170.5	n.160+13406_160+13408delATT		intron_variant	Intron 1 of 10	1		ENSP00000457784.1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Usher syndrome type 3 Pathogenic:1

Sep 01, 2002

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Retinitis pigmentosa 61 Pathogenic:1

Nov 19, 2023

Baylor Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.20		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.20		Position offset: 28

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1085307049; hg19: chr3-150645960;