8-52131992-C-T

Variant names:

• chr8-52131992-C-T
• NM_001352837.2:c.2632G>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001352837.2(ST18):​c.2632G>A​(p.Gly878Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ST18 NM_001352837.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91
• Publications: 0 publications found

Genes affected

ST18 (HGNC:18695): (ST18 C2H2C-type zinc finger transcription factor) Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in cytokine-mediated signaling pathway; negative regulation of cell population proliferation; and positive regulation of nitrogen compound metabolic process. Located in nucleus. Part of protein-DNA complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.973

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ST18	NM_001352837.2	c.2632G>A	p.Gly878Ser	missense_variant	Exon 22 of 26	ENST00000689386.1	NP_001339766.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ST18	ENST00000689386.1	c.2632G>A	p.Gly878Ser	missense_variant	Exon 22 of 26		NM_001352837.2	ENSP00000509475.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Apr 25, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2632G>A (p.G878S) alteration is located in exon 22 (coding exon 16) of the ST18 gene. This alteration results from a G to A substitution at nucleotide position 2632, causing the glycine (G) at amino acid position 878 to be replaced by a serine (S). 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	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.23
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Benign	0.059	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	-0.027	T
MutationAssessor	Pathogenic	3.6	H
PhyloP100		7.9
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-5.1	D
REVEL	Pathogenic	0.65
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.91
MutPred		0.94		Gain of catalytic residue at G878 (P = 0.0394);
MVP		0.61
MPC		0.48
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.67
gMVP		0.74
Mutation Taster		=53/47	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		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

hg19: chr8-53044552; COSMIC: COSV106375879; COSMIC: COSV106375879;