NM_174878.3:c.243T>C

Variant names:

• chr3-150972466-A-G
• rs397517931
• NM_174878.3:c.243T>C
• CLRN1 p.Phe81Phe

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_174878.3(CLRN1):​c.243T>C​(p.Phe81Phe) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CLRN1 NM_174878.3 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.433
• Publications: 0 publications found

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]

ENSG00000243273 (HGNC:):

SIAH2-AS1 (HGNC:40526): (SIAH2 antisense RNA 1)

CLRN1-AS1 (HGNC:30895): (CLRN1 antisense RNA 1)

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.58).
• BP6: Variant 3-150972466-A-G is Benign according to our data. Variant chr3-150972466-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 48144.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.433 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_174878.3. 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
	CLRN1	NM_174878.3	MANE Select	c.243T>C	p.Phe81Phe	synonymous	Exon 1 of 3	NP_777367.1	P58418-3
	CLRN1	NM_001195794.1		c.243T>C	p.Phe81Phe	synonymous	Exon 1 of 4	NP_001182723.1	P58418-4
	CLRN1	NM_001256819.2		c.243T>C	p.Phe81Phe	synonymous	Exon 1 of 4	NP_001243748.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLRN1	ENST00000327047.6	TSL:1 MANE Select	c.243T>C	p.Phe81Phe	synonymous	Exon 1 of 3	ENSP00000322280.1	P58418-3
	CLRN1	ENST00000328863.8	TSL:1	c.243T>C	p.Phe81Phe	synonymous	Exon 1 of 4	ENSP00000329158.4	P58418-4
	CLRN1	ENST00000468836.2	TSL:3	c.219T>C	p.Phe73Phe	synonymous	Exon 1 of 4	ENSP00000419892.2	C9JYI2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

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	-0.58
CADD	Benign	7.4
DANN	Benign	0.69
PhyloP100		-0.43
PromoterAI		0.14	Neutral

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs397517931;

hg19: chr3-150690253;