Variant chr1-89582972-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 1P and 8B. PP2BP4_StrongBS2

The NM_001369817.2(LRRC8B):c.322G>A(p.Val108Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00022 in 1,614,102 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: 𝑓 0.00037 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00020 ( 0 hom. )

Consequence

LRRC8B
NM_001369817.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.42

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PP2

Missense variant where missense usually causes diseases, LRRC8B

BP4

Computational evidence support a benign effect (MetaRNN=0.016841799).

BS2

High AC in GnomAd4 at 56 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
LRRC8B	NM_001369817.2 linkuse as main transcript	c.322G>A	p.Val108Ile	missense_variant	5/6	ENST00000330947.7
LRRC8B	NM_001134476.2 linkuse as main transcript	c.322G>A	p.Val108Ile	missense_variant	7/8
LRRC8B	NM_001369819.2 linkuse as main transcript	c.322G>A	p.Val108Ile	missense_variant	6/7
LRRC8B	NM_015350.4 linkuse as main transcript	c.322G>A	p.Val108Ile	missense_variant	8/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LRRC8B	ENST00000330947.7 linkuse as main transcript	c.322G>A	p.Val108Ile	missense_variant	5/6	5	NM_001369817.2	P1
LRRC8C-DT	ENST00000655657.3 linkuse as main transcript	n.1153C>T		non_coding_transcript_exon_variant	4/4

Frequencies

GnomAD3 genomes

AF:

0.000368

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.0110

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000189

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000529

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000275

AC:

AN:

251212

Hom.:

AF XY:

0.000295

AC XY:

AN XY:

135744

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.000198

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000511

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000205

AC:

299

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000204

AC XY:

148

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.000153

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.000251

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000368

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74414

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000189

Gnomad4 NFE

AF:

0.000529

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000474

Hom.:

Bravo

AF:

0.000344

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000272

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000600

EpiControl

AF:

0.000415

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

May 20, 2024

The c.322G>A (p.V108I) 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 322, causing the valine (V) at amino acid position 108 to be replaced by an isoleucine (I). 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

0.096

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.033

T;T;T;T;T

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.93

M_CAP

Benign

0.0095

MetaRNN

Benign

0.017

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.2

L;L;L;L;.

MutationTaster

Benign

0.98

D;D;D

PrimateAI

Uncertain

0.57

Polyphen

0.96

D;D;D;D;.

Vest4

0.32, 0.29, 0.31

MVP

0.14

MPC

1.3

ClinPred

0.096

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.087

gMVP

0.49

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