chr22-37973598-C-T

Position:

• chr22-37973598-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_006941.4(SOX10):​c.1298G>A​(p.Arg433Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,460,982 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R433W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: SOX10 NM_006941.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.57

Genes affected

SOX10 (HGNC:11190): (SRY-box transcription factor 10) This gene encodes a member of the SOX (SRY-related HMG-box) family of transcription factors involved in the regulation of embryonic development and in the determination of the cell fate. The encoded protein may act as a transcriptional activator after forming a protein complex with other proteins. This protein acts as a nucleocytoplasmic shuttle protein and is important for neural crest and peripheral nervous system development. Mutations in this gene are associated with Waardenburg-Shah and Waardenburg-Hirschsprung disease. [provided by RefSeq, Jul 2008]

POLR2F (HGNC:9193): (RNA polymerase II, I and III subunit F) This gene encodes the sixth largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. In yeast, this polymerase subunit, in combination with at least two other subunits, forms a structure that stabilizes the transcribing polymerase on the DNA template. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAdExome4 at 17 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SOX10	NM_006941.4	c.1298G>A	p.Arg433Gln	missense_variant	4/4	ENST00000396884.8
POLR2F	NM_001301130.2	c.293+6428C>T		intron_variant
POLR2F	NM_001301131.2	c.293+6428C>T		intron_variant
POLR2F	NM_001363825.1	c.*38+1288C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SOX10	ENST00000396884.8	c.1298G>A	p.Arg433Gln	missense_variant	4/4	1	NM_006941.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000806 AC: 2 AN: 248226 Hom.: 0 AF XY: 0.00000742 AC XY: 1 AN XY: 134826

Gnomad AFR exome AF: 0.0000649

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1460982 Hom.: 0 Cov.: 31 AF XY: 0.00000826 AC XY: 6 AN XY: 726738

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000224

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: 0.0000126

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 11, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 433 of the SOX10 protein (p.Arg433Gln). This variant is present in population databases (no rsID available, gnomAD 0.007%). This missense change has been observed in individual(s) with clinical features of SOX10-related conditions (PMID: 23643381). ClinVar contains an entry for this variant (Variation ID: 1424074). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SOX10 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change does not substantially affect SOX10 function (PMID: 23643381). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.89	D;D
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	.;D
M_CAP	Pathogenic	0.36	D
MetaRNN	Uncertain	0.74	D;D
MetaSVM	Uncertain	0.62	D
MutationAssessor	Pathogenic	2.9	M;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.88	D
PROVEAN	Uncertain	-3.4	D;D
REVEL	Pathogenic	0.80
Sift	Uncertain	0.0010	D;D
Sift4G	Uncertain	0.053	T;T
Polyphen		1.0	D;D
Vest4		0.64
MutPred		0.33		Loss of phosphorylation at S431 (P = 0.0912);Loss of phosphorylation at S431 (P = 0.0912);
MVP		0.87
MPC		2.1
ClinPred		0.99	D
GERP RS		5.1
Varity_R		0.70
gMVP		0.73

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

LitVar

Other links and lift over

dbSNP: rs1181391352; hg19: chr22-38369605; COSMIC: COSV62806400; COSMIC: COSV62806400;