rs111033454

Variant names:

• chr7-107683281-G-A
• rs111033454
• NM_000441.2:c.845G>A

Your query was ambiguous. Multiple possible variants found:

• chr7-107683281-G-A
• chr7-107683281-G-C

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM3_Strong PS3_Supporting PP3 PP4 PM2_Supporting

This summary comes from the ClinGen Evidence Repository: The c.845G>A (NM_000441.2) variant in SLC26A4 is a missense variant predicted to cause substitution of cysteine by tyrosine at amino acid 282 (p.Cys282Tyr). The highest population minor allele frequency in gnomAD v.2.1.1 is 0.000053 (6/113490 alleles) in the European non-Finnish population, which is lower than the ClinGen Hearing Loss threshold (<0.0007) for PM2_Supporting, meeting this criterion (PM2_Supporting). The computational predictor REVEL gives a score of 0.719 which is above the threshold of 0.7, evidence that correlates with impact to SLC26A4 function (PP3). This variant has been detected in at least 4 individuals with hearing loss. Of those individuals, three were compound heterozygous for the variant and a pathogenic variant observed in trans and one had a rare VUS variant on other allele (c.1001+1G>A, c.233A > G, 3.25 PM3 points, PMID:26969326,33152970, SCV000060163.6, SCV000343642.4) (PM3_Strong). At least one proband with this variant displayed features of sensorineural hearing loss and enlarged vestibular aqueduct, a phenotype highly specific for Pendred syndrome (PP4, PMID:26969326,33152970, SCV000060163.6). Functional studies including fluorescence assays have demonstrated that this variant impacts protein function (PS3_Supporting; PMID:26752218). In summary, this variant meets the criteria to be classified as likely pathogenic for autosomal recessive Pendred syndrome based on the ACMG/AMP criteria applied as specified by the Hearing Loss VCEP: PM2_Supporting, PP3, PM3_Strong, PP4, PS3_Supporting. (ClinGen Hearing Loss VCEP specifications version 2; 1/18/2023). LINK:https://erepo.genome.network/evrepo/ui/classification/CA261440/MONDO:0010134/005

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: SLC26A4 NM_000441.2 missense
• Clinical Significance: Likely pathogenic reviewed by expert panel P:8 U:1
• Conservation: PhyloP100: 5.48
• Publications: 14 publications found

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]

SLC26A4 Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 4

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• Pendred syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
• athyreosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• thyroid hypoplasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PS3: For more information check the summary or visit ClinGen Evidence Repository.
• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM3: For more information check the summary or visit ClinGen Evidence Repository.
• PP3: For more information check the summary or visit ClinGen Evidence Repository.
• PP4: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000441.2. 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
	SLC26A4	NM_000441.2	MANE Select	c.845G>A	p.Cys282Tyr	missense	Exon 7 of 21	NP_000432.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC26A4	ENST00000644269.2	MANE Select	c.845G>A	p.Cys282Tyr	missense	Exon 7 of 21	ENSP00000494017.1
	SLC26A4	ENST00000888701.1		c.845G>A	p.Cys282Tyr	missense	Exon 6 of 20	ENSP00000558760.1
	SLC26A4	ENST00000888700.1		c.845G>A	p.Cys282Tyr	missense	Exon 7 of 20	ENSP00000558759.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152158 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000239 AC: 6 AN: 251138 AF XY: 0.0000295

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000529

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461202 Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8 AN XY: 726918

African (AFR) AF: 0.00 AC: 0 AN: 33462

American (AMR) AF: 0.00 AC: 0 AN: 44712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39678

South Asian (SAS) AF: 0.00 AC: 0 AN: 86240

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.000180 AC: 1 AN: 5560

European-Non Finnish (NFE) AF: 0.0000144 AC: 16 AN: 1111660

Other (OTH) AF: 0.00 AC: 0 AN: 60352

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152276 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74464

African (AFR) AF: 0.00 AC: 0 AN: 41548

American (AMR) AF: 0.00 AC: 0 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000249 Hom.: 0

Bravo AF: 0.0000378

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.000164

EpiControl AF: 0.000119

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
2	1	-	not provided (3)
3	-	-	Pendred syndrome (3)
1	-	-	Autosomal recessive nonsyndromic hearing loss 4 (1)
1	-	-	Pendred syndrome;C3538946:Autosomal recessive nonsyndromic hearing loss 4 (1)
1	-	-	Rare genetic deafness (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	0.11
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D
Eigen	Uncertain	0.67
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.90	D
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Uncertain	0.71	D
MutationAssessor	Benign	1.7	L
PhyloP100		5.5
PrimateAI	Uncertain	0.71	T
PROVEAN	Uncertain	-3.6	D
REVEL	Pathogenic	0.72
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.99	D
Vest4		0.91
MVP		0.91
MPC		0.073
ClinPred		0.89	D
GERP RS		5.3
Varity_R		0.67
gMVP		0.95
Mutation Taster		=11/89	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs111033454; hg19: chr7-107323726; COSMIC: COSV55920274;