Genetic Variant LRRC8A:p.Tyr17Tyr (chr9-128907215-C-T) – ACMG Classification: Benign (-19 pts)

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_019594.4(LRRC8A):c.51C>T(p.Tyr17Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00146 in 1,613,680 control chromosomes in the GnomAD database, including 33 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0080 ( 14 hom., cov: 32)

Exomes 𝑓: 0.00078 ( 19 hom. )

Consequence

LRRC8A
NM_019594.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 2.30

Publications

0 publications found

Variant links:

Genes affected

LRRC8A (HGNC:19027): (leucine rich repeat containing 8 VRAC subunit A) This gene encodes a protein belonging to the leucine-rich repeat family of proteins, which are involved in diverse biological processes, including cell adhesion, cellular trafficking, and hormone-receptor interactions. This family member is a putative four-pass transmembrane protein that plays a role in B cell development. Defects in this gene cause autosomal dominant non-Bruton type agammaglobulinemia, an immunodeficiency disease resulting from defects in B cell maturation. Multiple alternatively spliced transcript variants, which encode the same protein, have been identified for this gene. [provided by RefSeq, Jul 2008]

LRRC8A Gene-Disease associations (from GenCC):

autosomal agammaglobulinemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
agammaglobulinemia
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
agammaglobulinemia 5, autosomal dominant
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

LRRC8A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.37).

BP6

Variant 9-128907215-C-T is Benign according to our data. Variant chr9-128907215-C-T is described in ClinVar as Benign. ClinVar VariationId is 716394.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.3 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00797 (1214/152390) while in subpopulation AFR AF = 0.0281 (1167/41596). AF 95% confidence interval is 0.0267. There are 14 homozygotes in GnomAd4. There are 577 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 1214 Unknown,AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019594.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LRRC8A	NM_019594.4	MANE Select	c.51C>T	p.Tyr17Tyr	synonymous	Exon 3 of 4	NP_062540.2	Q8IWT6
LRRC8A	NM_001127244.2		c.51C>T	p.Tyr17Tyr	synonymous	Exon 3 of 4	NP_001120716.1	Q8IWT6
LRRC8A	NM_001127245.2		c.51C>T	p.Tyr17Tyr	synonymous	Exon 2 of 3	NP_001120717.1	Q8IWT6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LRRC8A	ENST00000372600.9	TSL:1 MANE Select	c.51C>T	p.Tyr17Tyr	synonymous	Exon 3 of 4	ENSP00000361682.4	Q8IWT6
LRRC8A	ENST00000372599.7	TSL:1	c.51C>T	p.Tyr17Tyr	synonymous	Exon 2 of 3	ENSP00000361680.3	Q8IWT6
LRRC8A	ENST00000927475.1		c.51C>T	p.Tyr17Tyr	synonymous	Exon 3 of 5	ENSP00000597534.1

Frequencies

GnomAD3 genomes

AF:

0.00791

AC:

1205

AN:

152272

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0279

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00216

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:

0.0000735

Gnomad OTH

AF:

0.00430

GnomAD2 exomes

AF:

0.00211

AC:

530

AN:

251232

AF XY:

0.00148

show subpopulations

Gnomad AFR exome

AF:

0.0296

Gnomad AMR exome

AF:

0.00107

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000781

AC:

1141

AN:

1461290

Hom.:

Cov.:

AF XY:

0.000627

AC XY:

456

AN XY:

726810

show subpopulations

African (AFR)

AF:

0.0282

AC:

945

AN:

33470

American (AMR)

AF:

0.00125

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39684

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53266

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000477

AC:

AN:

1111618

Other (OTH)

AF:

0.00136

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

139

208

278

347

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

150

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00797

AC:

1214

AN:

152390

Hom.:

Cov.:

AF XY:

0.00774

AC XY:

577

AN XY:

74532

show subpopulations

African (AFR)

AF:

0.0281

AC:

1167

AN:

41596

American (AMR)

AF:

0.00215

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68034

Other (OTH)

AF:

0.00426

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

122

183

244

305

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00343

Hom.:

Bravo

AF:

0.00955

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Agammaglobulinemia 5, autosomal dominant (1)

LRRC8A-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.37

CADD

Benign

(source)

DANN

Benign

0.94

PhyloP100

2.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over