chr16-56328713-T-C

Position:

chr16-56328713-T-C

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 1P and 12B. PP2BP4_ModerateBP6_ModerateBS1BS2

The NM_020988.3(GNAO1):c.386T>C(p.Met129Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000263 in 1,614,184 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00028 ( 3 hom. )

Consequence

GNAO1
NM_020988.3 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.34

Variant links:

Genes affected

GNAO1 (HGNC:4389): (G protein subunit alpha o1) The protein encoded by this gene represents the alpha subunit of the Go heterotrimeric G-protein signal-transducing complex. Defects in this gene are a cause of early-onset epileptic encephalopathy. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2015]

GNAO1 links:

GNAO1 (HGNC:):

GNAO1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), GNAO1. . Gene score misZ 3.1919 (greater than the threshold 3.09). Trascript score misZ 4.549 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy, 17, neurodevelopmental disorder with involuntary movements, developmental and epileptic encephalopathy, movement disorder.

BP4

Computational evidence support a benign effect (MetaRNN=0.08346787).

BP6

Variant 16-56328713-T-C is Benign according to our data. Variant chr16-56328713-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 409946.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000125 (19/152322) while in subpopulation EAS AF= 0.00366 (19/5186). AF 95% confidence interval is 0.0024. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GNAO1	NM_020988.3 linkuse as main transcript	c.386T>C	p.Met129Thr	missense_variant	4/9	ENST00000262493.12	NP_066268.1	P09471-1Q8N6I9B3KP89
GNAO1	NM_138736.3 linkuse as main transcript	c.386T>C	p.Met129Thr	missense_variant	4/8		NP_620073.2	P09471-2Q8N6I9B3KP89Q6AWC5
GNAO1	XM_011523003.4 linkuse as main transcript	c.260T>C	p.Met87Thr	missense_variant	4/9		XP_011521305.1
GNAO1	XR_007064866.1 linkuse as main transcript	n.1133T>C		non_coding_transcript_exon_variant	4/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GNAO1	ENST00000262493.12 linkuse as main transcript	c.386T>C	p.Met129Thr	missense_variant	4/9	1	NM_020988.3	ENSP00000262493.6		P09471-1

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152204

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:

0.00366

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251484

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135920

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000277

AC:

405

AN:

1461862

Hom.:

Cov.:

AF XY:

0.000275

AC XY:

200

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0101

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000125

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00366

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Early infantile epileptic encephalopathy with suppression bursts

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 10, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.16

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.36

T;T;.;.

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.034

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.80

.;T;T;T

M_CAP

Benign

0.071

MetaRNN

Benign

0.083

T;T;T;T

MetaSVM

Benign

-0.39

MutationAssessor

Benign

-0.070

N;N;N;.

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-0.21

N;.;N;.

REVEL

Uncertain

0.34

Sift

Uncertain

0.0060

D;.;D;.

Sift4G

Benign

0.081

T;.;T;.

Polyphen

0.0010

B;B;B;.

Vest4

0.41

MutPred

0.46

Loss of stability (P = 0.0481);Loss of stability (P = 0.0481);Loss of stability (P = 0.0481);.;

MVP

0.74

MPC

1.6

ClinPred

0.20

GERP RS

5.0

Varity_R

0.31

gMVP

0.88

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

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