Variant 1-89584119-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001369817.2(LRRC8B):c.1469A>G(p.Lys490Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000322 in 1,613,638 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

LRRC8B
NM_001369817.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.65

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 -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07715306).

BS2

High AC in GnomAd4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
LRRC8B	NM_001369817.2 linkuse as main transcript	c.1469A>G	p.Lys490Arg	missense_variant	5/6	ENST00000330947.7
LRRC8B	NM_001134476.2 linkuse as main transcript	c.1469A>G	p.Lys490Arg	missense_variant	7/8
LRRC8B	NM_001369819.2 linkuse as main transcript	c.1469A>G	p.Lys490Arg	missense_variant	6/7
LRRC8B	NM_015350.4 linkuse as main transcript	c.1469A>G	p.Lys490Arg	missense_variant	8/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRRC8B	ENST00000330947.7 linkuse as main transcript	c.1469A>G	p.Lys490Arg	missense_variant	5/6	5	NM_001369817.2	P1
LRRC8C-DT	ENST00000655657.3 linkuse as main transcript	n.701-695T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

249826

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135276

show subpopulations

Gnomad AFR exome

AF:

0.000249

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1461334

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

727000

show subpopulations

Gnomad4 AFR exome

AF:

0.000388

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.000158

AC:

AN:

152304

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74468

show subpopulations

Gnomad4 AFR

AF:

0.000577

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000997

Hom.:

Bravo

AF:

0.000132

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000412

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

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

Oct 05, 2023

The c.1469A>G (p.K490R) alteration is located in exon 5 (coding exon 1) of the LRRC8B gene. This alteration results from a A to G substitution at nucleotide position 1469, causing the lysine (K) at amino acid position 490 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

Benign

0.076

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Benign

0.91

DEOGEN2

Benign

0.28

T;T;T;T

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.23

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.76

.;.;.;T

M_CAP

Benign

0.0092

MetaRNN

Benign

0.077

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.24

N;N;N;N

MutationTaster

Benign

0.87

N;N;N

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-0.25

.;.;N;N

REVEL

Benign

0.063

Sift

Benign

0.44

.;.;T;T

Sift4G

Benign

0.50

.;.;T;T

Polyphen

0.0

B;B;B;B

Vest4

0.087, 0.13

MVP

0.068

MPC

0.42

ClinPred

0.016

GERP RS

2.9

Varity_R

0.017

gMVP

0.25

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