Genetic Variant DCST2:p.Glu706Lys (chr1-155018750-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_144622.3(DCST2):c.2116G>A(p.Glu706Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000197 in 1,613,030 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 0 hom. )

Consequence

DCST2
NM_144622.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.845

Variant links:

Genes affected

DCST2 (HGNC:26562): (DC-STAMP domain containing 2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

DCST2 links:

ZBTB7B (HGNC:18668): (zinc finger and BTB domain containing 7B) This gene encodes a zinc finger-containing transcription factor that acts as a key regulator of lineage commitment of immature T-cell precursors. It is necessary and sufficient for commitment of CD4 lineage, while its absence causes CD8 commitment. It also functions as a transcriptional repressor of type I collagen genes. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2012]

ZBTB7B links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.019194037).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DCST2	NM_144622.3 link	c.2116G>A	p.Glu706Lys	missense_variant	Exon 15 of 15	ENST00000368424.4	NP_653223.2	Q5T1A1-1
ZBTB7B	NM_001256455.2 link	c.*2065C>T		downstream_gene_variant		ENST00000535420.6	NP_001243384.1	O15156-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DCST2	ENST00000368424.4 link	c.2116G>A	p.Glu706Lys	missense_variant	Exon 15 of 15	1	NM_144622.3	ENSP00000357409.3		Q5T1A1-1
ZBTB7B	ENST00000535420.6 link	c.*2065C>T		downstream_gene_variant		5	NM_001256455.2	ENSP00000438647.1		O15156-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000222

AC:

AN:

247542

Hom.:

AF XY:

0.000193

AC XY:

AN XY:

134444

show subpopulations

Gnomad AFR exome

AF:

0.000259

Gnomad AMR exome

AF:

0.000639

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000241

Gnomad OTH exome

AF:

0.000332

GnomAD4 exome

AF:

0.000192

AC:

281

AN:

1460824

Hom.:

Cov.:

AF XY:

0.000194

AC XY:

141

AN XY:

726676

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000672

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000211

Gnomad4 OTH exome

AF:

0.000249

GnomAD4 genome

AF:

0.000237

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74416

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.000981

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000203

Hom.:

Bravo

AF:

0.000246

ESP6500AA

AF:

0.000243

AC:

ESP6500EA

AF:

0.000119

AC:

ExAC

AF:

0.000182

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000297

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 01, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2116G>A (p.E706K) alteration is located in exon 15 (coding exon 15) of the DCST2 gene. This alteration results from a G to A substitution at nucleotide position 2116, causing the glutamic acid (E) at amino acid position 706 to be replaced by a lysine (K). 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

0.071

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.026

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.77

FATHMM_MKL

Benign

0.099

LIST_S2

Benign

0.59

M_CAP

Benign

0.0040

MetaRNN

Benign

0.019

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.68

REVEL

Benign

0.016

Sift

Benign

0.39

Sift4G

Benign

0.086

Polyphen

0.16

Vest4

0.22

MVP

0.13

MPC

0.098

ClinPred

0.018

GERP RS

1.4

Varity_R

0.030

gMVP

0.20

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over