Variant 1-89583941-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001369817.2(LRRC8B):c.1291G>A(p.Gly431Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000235 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G431D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

LRRC8B
NM_001369817.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.89

Variant links:

Genes affected

LRRC8B (HGNC:30692): (leucine rich repeat containing 8 VRAC subunit B) Contributes to volume-sensitive anion channel activity. Involved in anion transmembrane transport. Located in cytoplasm and plasma membrane. Is integral component of plasma membrane. Part of ion channel complex. [provided by Alliance of Genome Resources, Apr 2022]

LRRC8B links:

LRRC8C-DT (HGNC:53731): (LRRC8C divergent transcript)

LRRC8C-DT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
LRRC8B	NM_001369817.2 linkuse as main transcript	c.1291G>A	p.Gly431Ser	missense_variant	5/6	ENST00000330947.7
LRRC8B	NM_001134476.2 linkuse as main transcript	c.1291G>A	p.Gly431Ser	missense_variant	7/8
LRRC8B	NM_001369819.2 linkuse as main transcript	c.1291G>A	p.Gly431Ser	missense_variant	6/7
LRRC8B	NM_015350.4 linkuse as main transcript	c.1291G>A	p.Gly431Ser	missense_variant	8/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRRC8B	ENST00000330947.7 linkuse as main transcript	c.1291G>A	p.Gly431Ser	missense_variant	5/6	5	NM_001369817.2	P1
LRRC8C-DT	ENST00000655657.3 linkuse as main transcript	n.701-517C>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000399

AC:

AN:

250606

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135492

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:

0.0000327

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.0000442

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.000169

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000540

Hom.:

Bravo

AF:

0.000113

ExAC

AF:

0.0000494

AC:

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

Dec 16, 2023

The c.1291G>A (p.G431S) alteration is located in exon 5 (coding exon 1) of the LRRC8B gene. This alteration results from a G to A substitution at nucleotide position 1291, causing the glycine (G) at amino acid position 431 to be replaced by a serine (S). 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

0.48

BayesDel_addAF

Benign

-0.044

BayesDel_noAF

Benign

-0.17

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

T;T;T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

.;.;.;D

M_CAP

Benign

0.010

MetaRNN

Uncertain

0.57

D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

L;L;L;L

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-2.1

.;.;N;N

REVEL

Benign

0.26

Sift

Uncertain

0.0050

.;.;D;D

Sift4G

Pathogenic

0.0

.;.;D;D

Polyphen

1.0

D;D;D;D

Vest4

0.71, 0.71

MutPred

0.42

Loss of catalytic residue at L432 (P = 0.1182);Loss of catalytic residue at L432 (P = 0.1182);Loss of catalytic residue at L432 (P = 0.1182);Loss of catalytic residue at L432 (P = 0.1182);

MVP

0.17

MPC

1.4

ClinPred

0.38

GERP RS

5.3

Varity_R

0.29

gMVP

0.54

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