chr7-107689044-A-C

Position:

• chr7-107689044-A-C

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BS1 BS2

The NM_000441.2(SLC26A4):​c.1002-9A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00177 in 1,613,190 control chromosomes in the GnomAD database, including 45 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0092 (23 hom., cov: 32)
  • Exomes 𝑓: 0.0010 (22 hom.)
• Consequence: SLC26A4 NM_000441.2 intron
• Scores: Splicing: ADA: 0.00001573
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:12
• Conservation: PhyloP100: 0.263

Genes affected

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 -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.39).
• BP6: Variant 7-107689044-A-C is Benign according to our data. Variant chr7-107689044-A-C is described in ClinVar as [Likely_benign]. Clinvar id is 43489.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-107689044-A-C is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00922 (1398/151700) while in subpopulation AFR AF= 0.0304 (1258/41348). AF 95% confidence interval is 0.029. There are 23 homozygotes in gnomad4. There are 662 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 23 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC26A4	NM_000441.2	c.1002-9A>C		intron_variant		ENST00000644269.2	NP_000432.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC26A4	ENST00000644269.2	c.1002-9A>C		intron_variant			NM_000441.2	ENSP00000494017.1

Frequencies

GnomAD3 genomes AF: 0.00924 AC: 1400 AN: 151582 Hom.: 23 Cov.: 32

Gnomad AFR AF: 0.0306

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00605

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0190

Gnomad NFE AF: 0.000251

Gnomad OTH AF: 0.0120

GnomAD3 exomes AF: 0.00241 AC: 606 AN: 251140 Hom.: 7 AF XY: 0.00190 AC XY: 258 AN XY: 135714

Gnomad AFR exome AF: 0.0303

Gnomad AMR exome AF: 0.00220

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000273

Gnomad OTH exome AF: 0.000817

GnomAD4 exome AF: 0.00100 AC: 1462 AN: 1461490 Hom.: 22 Cov.: 31 AF XY: 0.000869 AC XY: 632 AN XY: 727062

Gnomad4 AFR exome AF: 0.0286

Gnomad4 AMR exome AF: 0.00255

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000232

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000204

Gnomad4 OTH exome AF: 0.00252

GnomAD4 genome AF: 0.00922 AC: 1398 AN: 151700 Hom.: 23 Cov.: 32 AF XY: 0.00893 AC XY: 662 AN XY: 74132

Gnomad4 AFR AF: 0.0304

Gnomad4 AMR AF: 0.00604

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000251

Gnomad4 OTH AF: 0.0119

Alfa AF: 0.00443 Hom.: 7

Bravo AF: 0.0112

Asia WGS AF: 0.00202 AC: 7 AN: 3478

EpiCase AF: 0.000491

EpiControl AF: 0.000356

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:5

Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jan 01, 2024	SLC26A4: BS1, BS2 -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 19, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 21, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Jul 08, 2016	- -

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 28, 2017	- -
Benign, no assertion criteria provided	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Aug 27, 2008	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Pendred syndrome Benign:3

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 28, 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). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -
Benign, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Likely benign, criteria provided, single submitter	clinical testing	Counsyl	May 29, 2018	- -

Autosomal recessive nonsyndromic hearing loss 4 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 28, 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). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.39
CADD	Benign	11
DANN	Benign	0.82

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000016
dbscSNV1_RF	Benign	0.15
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

LitVar

Other links and lift over

dbSNP: rs10234822; hg19: chr7-107329489;