6-52896853-C-A

Variant names:

• chr6-52896853-C-A
• rs45620832
• NM_000847.5:c.622G>T

Variant summary

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

The NM_000847.5(GSTA3):​c.622G>T​(p.Ala208Ser) variant causes a missense 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. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A208T) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: GSTA3 NM_000847.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -8.75
• Publications: 0 publications found

Genes affected

GSTA3 (HGNC:4628): (glutathione S-transferase alpha 3) Cytosolic and membrane-bound forms of glutathione S-transferase are encoded by two distinct supergene families. These enzymes are involved in cellular defense against toxic, carcinogenic, and pharmacologically active electrophilic compounds. At present, eight distinct classes of the soluble cytoplasmic mammalian glutathione S-transferases have been identified: alpha, kappa, mu, omega, pi, sigma, theta and zeta. This gene encodes a glutathione S-tranferase belonging to the alpha class genes that are located in a cluster mapped to chromosome 6. Genes of the alpha class are highly related and encode enzymes with glutathione peroxidase activity. However, during evolution, this alpha class gene diverged accumulating mutations in the active site that resulted in differences in substrate specificity and catalytic activity. The enzyme encoded by this gene catalyzes the double bond isomerization of precursors for progesterone and testosterone during the biosynthesis of steroid hormones. An additional transcript variant has been identified, but its full length sequence has not been determined. [provided by RefSeq, Jul 2008]

ENSG00000309866 (HGNC:):

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 (MetaRNN=0.024562478).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000847.5. 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
	GSTA3	NM_000847.5	MANE Select	c.622G>T	p.Ala208Ser	missense	Exon 7 of 7	NP_000838.3
	GSTA3	NM_001363542.2		c.472G>T	p.Ala158Ser	missense	Exon 6 of 6	NP_001350471.1	Q5JW85

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GSTA3	ENST00000211122.4	TSL:1 MANE Select	c.622G>T	p.Ala208Ser	missense	Exon 7 of 7	ENSP00000211122.3	Q16772
	GSTA3	ENST00000370968.5	TSL:1	c.472G>T	p.Ala158Ser	missense	Exon 6 of 6	ENSP00000360007.1	Q5JW85
	GSTA3	ENST00000961739.1		c.622G>T	p.Ala208Ser	missense	Exon 7 of 7	ENSP00000631798.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.40	T
BayesDel_noAF	Benign	-0.81
CADD	Benign	0.0010
DANN	Benign	0.43
DEOGEN2	Benign	0.032	T
Eigen	Benign	-2.8
Eigen_PC	Benign	-2.9
FATHMM_MKL	Benign	0.0041	N
LIST_S2	Benign	0.11	T
M_CAP	Benign	0.00076	T
MetaRNN	Benign	0.025	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.90	L
PhyloP100		-8.8
PrimateAI	Benign	0.23	T
PROVEAN	Benign	-0.29	N
REVEL	Benign	0.026
Sift	Benign	0.66	T
Sift4G	Benign	0.43	T
Polyphen		0.0010	B
Vest4		0.078
MutPred		0.17		Gain of phosphorylation at A208 (P = 0.0164)
MVP		0.081
MPC		0.033
ClinPred		0.040	T
GERP RS		-6.5
Varity_R		0.13
gMVP		0.11
Mutation Taster		=96/4	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: rs45620832; hg19: chr6-52761651;