2-106843207-G-A

Variant names:

• chr2-106843207-G-A
• rs898721265
• NM_001142351.2:c.771C>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001142351.2(ST6GAL2):​c.771C>T​(p.Ser257Ser) variant causes a synonymous 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: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ST6GAL2 NM_001142351.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.679
• Publications: 0 publications found

Genes affected

ST6GAL2 (HGNC:10861): (ST6 beta-galactoside alpha-2,6-sialyltransferase 2) This locus encodes a sialyltransferase. The encoded type II transmembrane protein catalyzes the transfer of sialic acid from CMP to an oligosaccharide substrate. Polymorphisms at this locus may be associated with variations in risperidone response in schizophrenic patients. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2012]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=-0.679 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001142351.2. 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
	ST6GAL2	NM_001142351.2	MANE Select	c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	NP_001135823.1	Q96JF0-1
	ST6GAL2	NM_001322362.2		c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	NP_001309291.1	Q96JF0-1
	ST6GAL2	NM_032528.3		c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	NP_115917.1	Q96JF0-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ST6GAL2	ENST00000409382.8	TSL:1 MANE Select	c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	ENSP00000386942.3	Q96JF0-1
	ST6GAL2	ENST00000361686.8	TSL:1	c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	ENSP00000355273.4	Q96JF0-1
	ST6GAL2	ENST00000409087.3	TSL:1	c.771C>T	p.Ser257Ser	synonymous	Exon 2 of 6	ENSP00000387332.3	Q96JF0-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1403328 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 693056

African (AFR) AF: 0.00 AC: 0 AN: 32056

American (AMR) AF: 0.00 AC: 0 AN: 35658

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24398

East Asian (EAS) AF: 0.00 AC: 0 AN: 37002

South Asian (SAS) AF: 0.00 AC: 0 AN: 80608

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 47902

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5472

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1082304

Other (OTH) AF: 0.00 AC: 0 AN: 57928

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	6.5
DANN	Benign	0.90
PhyloP100		-0.68
Mutation Taster		=100/0	polymorphism

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: rs898721265; hg19: chr2-107459663;