Variant 1-89583567-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_001369817.2(LRRC8B):c.917A>G(p.Tyr306Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000685 in 1,459,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

LRRC8B
NM_001369817.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.22

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:):

LRRC8C-DT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.824

BS2

High AC in GnomAdExome4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRRC8B	NM_001369817.2 linkuse as main transcript	c.917A>G	p.Tyr306Cys	missense_variant	5/6	ENST00000330947.7	NP_001356746.1
LRRC8B	NM_001134476.2 linkuse as main transcript	c.917A>G	p.Tyr306Cys	missense_variant	7/8		NP_001127948.1	Q6P9F7A0A384N5V6
LRRC8B	NM_001369819.2 linkuse as main transcript	c.917A>G	p.Tyr306Cys	missense_variant	6/7		NP_001356748.1
LRRC8B	NM_015350.4 linkuse as main transcript	c.917A>G	p.Tyr306Cys	missense_variant	8/9		NP_056165.1	Q6P9F7A0A384N5V6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRRC8B	ENST00000330947.7 linkuse as main transcript	c.917A>G	p.Tyr306Cys	missense_variant	5/6	5	NM_001369817.2	ENSP00000332674.2		Q6P9F7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000161

AC:

AN:

248736

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134780

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:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000685

AC:

AN:

1459058

Hom.:

Cov.:

AF XY:

0.00000689

AC XY:

AN XY:

725994

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000395

Gnomad4 NFE exome

AF:

0.00000719

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000330

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

Nov 14, 2024

The c.917A>G (p.Y306C) 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 917, causing the tyrosine (Y) at amino acid position 306 to be replaced by a cysteine (C). 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

Pathogenic

0.72

BayesDel_addAF

Benign

-0.014

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.19

T;T;T;T

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

.;.;.;D

M_CAP

Benign

0.019

MetaRNN

Pathogenic

0.82

D;D;D;D

MetaSVM

Benign

-0.90

MutationAssessor

Benign

1.6

L;L;L;L

PrimateAI

Uncertain

0.55

PROVEAN

Uncertain

-2.8

.;.;D;D

REVEL

Uncertain

0.35

Sift

Pathogenic

0.0

.;.;D;D

Sift4G

Uncertain

0.0030

.;.;D;D

Polyphen

1.0

D;D;D;D

Vest4

0.80, 0.79

MutPred

0.73

Gain of helix (P = 0.132);Gain of helix (P = 0.132);Gain of helix (P = 0.132);Gain of helix (P = 0.132);

MVP

0.082

MPC

1.4

ClinPred

0.87

GERP RS

5.3

Varity_R

0.50

gMVP

0.87

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