rs371413520

Variant names:

• chr1-34784745-C-A
• NM_024009.3:c.-18C>A

Your query was ambiguous. Multiple possible variants found:

• chr1-34784745-C-A
• chr1-34784745-C-G
• chr1-34784745-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BS2_Supporting

The NM_024009.3(GJB3):​c.-18C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000346 in 1,446,628 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.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000035 (0 hom.)
• Consequence: GJB3 NM_024009.3 5_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0820

Genes affected

GJB3 (HGNC:4285): (gap junction protein beta 3) This gene is a member of the connexin gene family. The encoded protein is a component of gap junctions, which are composed of arrays of intercellular channels that provide a route for the diffusion of low molecular weight materials from cell to cell. Mutations in this gene can cause non-syndromic deafness or erythrokeratodermia variabilis, a skin disorder. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

SMIM12 (HGNC:25154): (small integral membrane protein 12) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000255811 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BS2: High AC in GnomAdExome4 at 5 AD,Digenic gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GJB3	NM_024009.3	c.-18C>A		5_prime_UTR_variant	Exon 2 of 2	ENST00000373366.3	NP_076872.1
GJB3	NM_001005752.2	c.-18C>A		5_prime_UTR_variant	Exon 2 of 2		NP_001005752.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GJB3	ENST00000373366	c.-18C>A		5_prime_UTR_variant	Exon 2 of 2	1	NM_024009.3	ENSP00000362464.2
GJB3	ENST00000373362	c.-18C>A		5_prime_UTR_variant	Exon 2 of 2	1		ENSP00000362460.3
SMIM12	ENST00000426886.1	n.208-66336G>T		intron_variant	Intron 2 of 4	1		ENSP00000429902.1
ENSG00000255811	ENST00000542839.1	n.110+3243G>T		intron_variant	Intron 1 of 1	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000346 AC: 5 AN: 1446628 Hom.: 0 Cov.: 31 AF XY: 0.00000139 AC XY: 1 AN XY: 720324

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000364

Gnomad4 OTH exome AF: 0.0000167

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	3.7
DANN	Benign	0.70

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-35250346;