chr12-23734745-CTT-C

Variant names:

• chr12-23734745-CTT-C
• rs1555301854
• NM_006940.6:c.747_748delAA

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_006940.6(SOX5):​c.747_748delAA​(p.Arg250ThrfsTer36) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SOX5 NM_006940.6 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 2.64
• Publications: 2 publications found

Genes affected

SOX5 (HGNC:11201): (SRY-box transcription factor 5) 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 regulator after forming a protein complex with other proteins. The encoded protein may play a role in chondrogenesis. A pseudogene of this gene is located on chromosome 8. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

SOX5 Gene-Disease associations (from GenCC):

• Lamb-Shaffer syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen
• developmental and speech delay due to SOX5 deficiency

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 12-23734745-CTT-C is Pathogenic according to our data. Variant chr12-23734745-CTT-C is described in ClinVar as Pathogenic. ClinVar VariationId is 522101.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006940.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SOX5	NM_006940.6	MANE Select	c.747_748delAA	p.Arg250ThrfsTer36	frameshift	Exon 6 of 15	NP_008871.3
	SOX5	NM_001261415.3		c.717_718delAA	p.Arg240ThrfsTer36	frameshift	Exon 6 of 15	NP_001248344.1
	SOX5	NM_152989.5		c.708_709delAA	p.Arg237ThrfsTer36	frameshift	Exon 9 of 18	NP_694534.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SOX5	ENST00000451604.7	TSL:1 MANE Select	c.747_748delAA	p.Arg250ThrfsTer36	frameshift	Exon 6 of 15	ENSP00000398273.2
	SOX5	ENST00000545921.5	TSL:2	c.717_718delAA	p.Arg240ThrfsTer36	frameshift	Exon 6 of 15	ENSP00000443520.1
	SOX5	ENST00000537393.5	TSL:5	c.642_643delAA	p.Arg215ThrfsTer36	frameshift	Exon 6 of 15	ENSP00000439832.1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Pathogenic:1

Oct 03, 2017

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Lamb-Shaffer syndrome Pathogenic:1

Aug 05, 2019

Institute for Human Genetics, University Hospital Essen

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.6
Mutation Taster		=0/200	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: rs1555301854; hg19: chr12-23887679;