Variant chr21-33070967-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_138983.3(OLIG1):c.721G>C(p.Gly241Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000765 in 1,307,634 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.6e-7 ( 0 hom. )

Consequence

OLIG1
NM_138983.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.233

Variant links:

Genes affected

OLIG1 (HGNC:16983): (oligodendrocyte transcription factor 1) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in neuron differentiation and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within neuron fate commitment. Predicted to be part of chromatin. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

OLIG1 links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

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=0.30272663).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OLIG1	NM_138983.3 linkuse as main transcript	c.721G>C	p.Gly241Arg	missense_variant	1/1	ENST00000382348.2	NP_620450.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
OLIG1	ENST00000382348.2 linkuse as main transcript	c.721G>C	p.Gly241Arg	missense_variant	1/1		NM_138983.3	ENSP00000371785	P1
	ENST00000454622.2 linkuse as main transcript	n.138C>G		non_coding_transcript_exon_variant	1/2	2
OLIG1	ENST00000426947.5 linkuse as main transcript	c.4G>C	p.Gly2Arg	missense_variant	1/2	2		ENSP00000414840

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.65e-7

AC:

AN:

1307634

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

644688

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:

9.58e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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 04, 2023

The c.721G>C (p.G241R) alteration is located in exon 1 (coding exon 1) of the OLIG1 gene. This alteration results from a G to C substitution at nucleotide position 721, causing the glycine (G) at amino acid position 241 to be replaced by an arginine (R). 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

0.39

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Benign

0.53

DEOGEN2

Benign

0.25

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.82

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.61

M_CAP

Pathogenic

0.92

MetaRNN

Benign

0.30

MetaSVM

Uncertain

0.43

MutationAssessor

Benign

0.34

MutationTaster

Benign

0.99

N;N

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.31

Sift

Uncertain

0.0050

Sift4G

Benign

0.35

Polyphen

0.74

Vest4

0.12

MutPred

0.39

Gain of methylation at G241 (P = 0.0148);

MVP

0.75

MPC

1.9

ClinPred

0.44

GERP RS

0.0056

Varity_R

0.17

gMVP

0.39

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over