X-124084669-T-C

Variant names:

• chrX-124084669-T-C
• rs5910058
• NM_001042750.2:c.3053+1120T>C

Variant summary

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

The NM_001042750.2(STAG2):​c.3053+1120T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: 23)
• Consequence: STAG2 NM_001042750.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.410
• Publications: 1 publications found

Genes affected

STAG2 (HGNC:11355): (STAG2 cohesin complex component) The protein encoded by this gene is a subunit of the cohesin complex, which regulates the separation of sister chromatids during cell division. Targeted inactivation of this gene results in chromatid cohesion defects and aneuploidy, suggesting that genetic disruption of cohesin is a cause of aneuploidy in human cancer. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2013]

STAG2 Gene-Disease associations (from GenCC):

• Mullegama-Klein-Martinez syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Illumina, Labcorp Genetics (formerly Invitae), G2P
• Xq25 microduplication syndrome

  Inheritance: XL Classification: LIMITED Submitted by: Ambry Genetics

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=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001042750.2. 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
	STAG2	NM_001042750.2	MANE Select	c.3053+1120T>C		intron	N/A	NP_001036215.1
	STAG2	NM_001042749.2		c.3053+1120T>C		intron	N/A	NP_001036214.1
	STAG2	NM_001375366.1		c.3053+1120T>C		intron	N/A	NP_001362295.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	STAG2	ENST00000371145.8	TSL:1 MANE Select	c.3053+1120T>C		intron	N/A	ENSP00000360187.4
	STAG2	ENST00000218089.13	TSL:1	c.3053+1120T>C		intron	N/A	ENSP00000218089.9
	STAG2	ENST00000371144.7	TSL:1	c.3053+1120T>C		intron	N/A	ENSP00000360186.3

Frequencies

GnomAD3 genomes Cov.: 23

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

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	1.4
DANN	Benign	0.65
PhyloP100		-0.41

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: rs5910058; hg19: chrX-123218519;