7-107660793-C-G

Position:

• chr7-107660793-C-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NR_028137.1(SLC26A4-AS1):​n.198-587G>C variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0768 in 152,214 control chromosomes in the GnomAD database, including 1,495 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.077 (1495 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SLC26A4-AS1 NR_028137.1 intron, non_coding_transcript
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.122

Genes affected

SLC26A4-AS1 (HGNC:22385): (SLC26A4 antisense RNA 1)

SLC26A4 (HGNC:8818): (solute carrier family 26 member 4) Mutations in this gene are associated with Pendred syndrome, the most common form of syndromic deafness, an autosomal-recessive disease. It is highly homologous to the SLC26A3 gene; they have similar genomic structures and this gene is located 3' of the SLC26A3 gene. The encoded protein has homology to sulfate transporters. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.62).
• BP6: Variant 7-107660793-C-G is Benign according to our data. Variant chr7-107660793-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 43487.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-107660793-C-G is described in Lovd as [Benign].
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.259 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC26A4-AS1	NR_028137.1	n.198-587G>C		intron_variant, non_coding_transcript_variant
SLC26A4	NM_000441.2			upstream_gene_variant		ENST00000644269.2	NP_000432.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC26A4-AS1	ENST00000668981.1	n.257+809G>C		intron_variant, non_coding_transcript_variant
SLC26A4	ENST00000644269.2			upstream_gene_variant			NM_000441.2	ENSP00000494017	P1

Frequencies

GnomAD3 genomes AF: 0.0767 AC: 11663 AN: 152096 Hom.: 1495 Cov.: 32

Gnomad AFR AF: 0.263

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0330

Gnomad ASJ AF: 0.00692

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0316

Gnomad NFE AF: 0.00131

Gnomad OTH AF: 0.0721

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 38 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 32

Gnomad4 AFR exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0768 AC: 11686 AN: 152214 Hom.: 1495 Cov.: 32 AF XY: 0.0727 AC XY: 5410 AN XY: 74436

Gnomad4 AFR AF: 0.263

Gnomad4 AMR AF: 0.0328

Gnomad4 ASJ AF: 0.00692

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000415

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00131

Gnomad4 OTH AF: 0.0714

Alfa AF: 0.0147 Hom.: 22

Bravo AF: 0.0875

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Pendred syndrome Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 18, 2009

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 03, 2015

- -

Autosomal recessive nonsyndromic hearing loss 4 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.62
CADD	Benign	9.7
DANN	Benign	0.84

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs17154282; hg19: chr7-107301238;