Variant chr21-33027730-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_005806.4(OLIG2):c.868G>T(p.Gly290Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000038 in 1,369,430 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

OLIG2
NM_005806.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.32

Variant links:

Genes affected

OLIG2 (HGNC:9398): (oligodendrocyte transcription factor 2) This gene encodes a basic helix-loop-helix transcription factor which is expressed in oligodendroglial tumors of the brain. The protein is an essential regulator of ventral neuroectodermal progenitor cell fate. The gene is involved in a chromosomal translocation t(14;21)(q11.2;q22) associated with T-cell acute lymphoblastic leukemia. Its chromosomal location is within a region of chromosome 21 which has been suggested to play a role in learning deficits associated with Down syndrome. [provided by RefSeq, Jul 2008]

OLIG2 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.874

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OLIG2	NM_005806.4 linkuse as main transcript	c.868G>T	p.Gly290Cys	missense_variant	2/2	ENST00000382357.4	NP_005797.1
OLIG2	XM_005260908.2 linkuse as main transcript	c.868G>T	p.Gly290Cys	missense_variant	2/2		XP_005260965.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
OLIG2	ENST00000382357.4 linkuse as main transcript	c.868G>T	p.Gly290Cys	missense_variant	2/2	1	NM_005806.4	ENSP00000371794	P1
	ENST00000454622.2 linkuse as main transcript	n.201+43174C>A		intron_variant, non_coding_transcript_variant		2
OLIG2	ENST00000333337.3 linkuse as main transcript	c.868G>T	p.Gly290Cys	missense_variant	1/1			ENSP00000331040	P1

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151920

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000737

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000197

AC:

AN:

10148

Hom.:

AF XY:

0.000152

AC XY:

AN XY:

6564

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.000458

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000386

AC:

AN:

1217510

Hom.:

Cov.:

AF XY:

0.0000354

AC XY:

AN XY:

592506

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000460

Gnomad4 OTH exome

AF:

0.0000200

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151920

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74238

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000737

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 18, 2022

The c.868G>T (p.G290C) alteration is located in exon 2 (coding exon 1) of the OLIG2 gene. This alteration results from a G to T substitution at nucleotide position 868, causing the glycine (G) at amino acid position 290 to be replaced by a cysteine (C). 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

Uncertain

0.51

BayesDel_addAF

Benign

-0.036

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.84

D;D

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.92

.;D

M_CAP

Pathogenic

0.69

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Uncertain

0.044

MutationAssessor

Uncertain

2.5

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.89

PROVEAN

Uncertain

-2.8

D;D

REVEL

Uncertain

0.62

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.73

MVP

0.87

ClinPred

0.33

GERP RS

3.6

Varity_R

0.75

gMVP

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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