X-7257468-A-G

Position:

• chrX-7257468-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001320752.2(STS):​c.262A>G​(p.Met88Val) variant causes a missense, splice region 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. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 24)
• Consequence: STS NM_001320752.2 missense, splice_region
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.70

Genes affected

STS (HGNC:11425): (steroid sulfatase) This gene encodes a multi-pass membrane protein that is localized to the endoplasmic reticulum. It belongs to the sulfatase family and hydrolyzes several 3-beta-hydroxysteroid sulfates, which serve as metabolic precursors for estrogens, androgens, and cholesterol. Mutations in this gene are associated with X-linked ichthyosis (XLI). Alternatively spliced transcript variants resulting from the use of different promoters have been described for this gene (PMID:17601726). [provided by RefSeq, Mar 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.40919805).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STS	NM_001320752.2	c.262A>G	p.Met88Val	missense_variant, splice_region_variant	5/11	ENST00000674429.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STS	ENST00000674429.1	c.262A>G	p.Met88Val	missense_variant, splice_region_variant	5/11		NM_001320752.2	P1

Frequencies

GnomAD3 genomes Cov.: 24

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 24

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2023

The c.277A>G (p.M93V) alteration is located in exon 4 (coding exon 4) of the STS gene. This alteration results from a A to G substitution at nucleotide position 277, causing the methionine (M) at amino acid position 93 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.060
CADD	Benign	14
DANN	Benign	0.88
DEOGEN2	Pathogenic	0.88	D
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.81	T
M_CAP	Uncertain	0.15	D
MetaRNN	Benign	0.41	T
MetaSVM	Uncertain	0.63	D
MutationAssessor	Benign	0.97	L
MutationTaster	Benign	0.96	D
PrimateAI	Uncertain	0.62	T
PROVEAN	Uncertain	-3.4	D
REVEL	Uncertain	0.48
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0050	D
Polyphen		0.42	B
Vest4		0.24
MutPred		0.59		Gain of catalytic residue at M93 (P = 0.003);
MVP		0.76
MPC		0.30
ClinPred		0.68	D
GERP RS		2.7
Varity_R		0.80
gMVP		0.91

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-7175509;