rs72655391

Variant names:

• chr7-103389500-C-A
• rs72655391
• NM_198999.3:c.1312-76G>T

Your query was ambiguous. Multiple possible variants found:

• chr7-103389500-C-A
• chr7-103389500-C-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_198999.3(SLC26A5):​c.1312-76G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000112 in 895,630 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: 0.0000011 (0 hom.)
• Consequence: SLC26A5 NM_198999.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.371
• Publications: 0 publications found

Genes affected

SLC26A5 (HGNC:9359): (solute carrier family 26 member 5) This gene encodes a member of the SLC26A/SulP transporter family. The protein functions as a molecular motor in motile outer hair cells (OHCs) of the cochlea, inducing changes in cell length that act to amplify sound levels. The transmembrane protein is an incomplete anion transporter, and does not allow anions to cross the cell membrane but instead undergoes a conformational change in response to changes in intracellular Cl- levels that results in a change in cell length. The protein functions at microsecond rates, which is several orders of magnitude faster than conventional molecular motor proteins. Mutations in this gene are potential candidates for causing neurosensory deafness. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Nov 2009]

SLC26A5 Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 61

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.77).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC26A5	NM_198999.3	c.1312-76G>T		intron_variant	Intron 12 of 19	ENST00000306312.8	NP_945350.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC26A5	ENST00000306312.8	c.1312-76G>T		intron_variant	Intron 12 of 19	1	NM_198999.3	ENSP00000304783.3
SLC26A5	ENST00000393727.5	c.1312-76G>T		intron_variant	Intron 10 of 17	1		ENSP00000377328.1
SLC26A5	ENST00000393723.2	c.1312-386G>T		intron_variant	Intron 10 of 16	1		ENSP00000377324.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000112 AC: 1 AN: 895630 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 468222

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 22630

American (AMR) AF: 0.0000240 AC: 1 AN: 41712

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22432

East Asian (EAS) AF: 0.00 AC: 0 AN: 36864

South Asian (SAS) AF: 0.00 AC: 0 AN: 73538

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51584

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4500

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 600596

Other (OTH) AF: 0.00 AC: 0 AN: 41774

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.77
CADD	Benign	1.6
DANN	Benign	0.80
PhyloP100		-0.37

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: rs72655391; hg19: chr7-103029947;