22-19788930-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_053004.3(GNB1L):c.763G>A(p.Gly255Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000323 in 1,610,358 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 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

GNB1L
NM_053004.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.30

Variant links:

Genes affected

GNB1L (HGNC:4397): (G protein subunit beta 1 like) This gene encodes a G-protein beta-subunit-like polypeptide which is a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. This protein contains 6 WD repeats and is highly expressed in the heart. The gene maps to the region on chromosome 22q11, which is deleted in DiGeorge syndrome, trisomic in derivative 22 syndrome and tetrasomic in cat-eye syndrome. Therefore, this gene may contribute to the etiology of those disorders. Transcripts from this gene share exons with some transcripts from the C22orf29 gene. [provided by RefSeq, Jul 2008]

GNB1L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.859

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GNB1L	NM_053004.3 linkuse as main transcript	c.763G>A	p.Gly255Arg	missense_variant	8/8	ENST00000329517.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GNB1L	ENST00000329517.11 linkuse as main transcript	c.763G>A	p.Gly255Arg	missense_variant	8/8	1	NM_053004.3	P1	Q9BYB4-1
GNB1L	ENST00000403325.5 linkuse as main transcript	c.763G>A	p.Gly255Arg	missense_variant	7/7	1		P1	Q9BYB4-1
GNB1L	ENST00000405009.5 linkuse as main transcript	c.631-304G>A		intron_variant		1			Q9BYB4-2
GNB1L	ENST00000460402.5 linkuse as main transcript	n.731G>A		non_coding_transcript_exon_variant	6/6	3

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000243

AC:

AN:

246726

Hom.:

AF XY:

0.0000448

AC XY:

AN XY:

133816

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:

0.0000465

Gnomad NFE exome

AF:

0.0000454

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000302

AC:

AN:

1458076

Hom.:

Cov.:

AF XY:

0.0000372

AC XY:

AN XY:

724858

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000383

Gnomad4 NFE exome

AF:

0.0000360

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74458

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000573

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing;provider interpretation

Geisinger Autism and Developmental Medicine Institute, Geisinger Health System

May 25, 2017

This is a 26 year old female with generalized anxiety disorder, depression, obsessive compulsive disorder, learning disability, speech delay hypernasal speech, hypersomnia, spastic diplegia, and scoliosis. There is no history of ataxia. There is a maternal history of depression and anxiety and paternal history of dyslexia. This p.Gly255Arg variant is present in the gnomAD non-Finnish European population at a frequency of 0.0057%. Computational models are predict it to be deleterious. Human disorders have not been clearly associated with the GNB1L gene, although it has been implicated as potentially involved in neurodevelopmental and psychiatric phenotypes (Chen, 2012). Whole exome sequencing identified 2 additional variants of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.77

BayesDel_addAF

Uncertain

0.16

BayesDel_noAF

Uncertain

0.12

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.43

T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Pathogenic

0.99

M_CAP

Benign

0.053

MetaRNN

Pathogenic

0.86

D;D

MetaSVM

Benign

-0.79

MutationAssessor

Pathogenic

3.4

M;M

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-7.6

D;D

REVEL

Uncertain

0.51

Sift

Uncertain

0.0020

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.85

MutPred

0.70

Gain of MoRF binding (P = 0.0615);Gain of MoRF binding (P = 0.0615);

MVP

0.48

MPC

0.91

ClinPred

0.99

GERP RS

5.5

Varity_R

0.77

gMVP

0.64

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