Variant 19-50517818-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_001080457.2(LRRC4B):c.1895T>C(p.Val632Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000589 in 1,562,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

LRRC4B
NM_001080457.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.14

Variant links:

Genes affected

LRRC4B (HGNC:25042): (leucine rich repeat containing 4B) Predicted to enable signaling receptor binding activity. Predicted to be involved in regulation of synapse assembly and synaptic membrane adhesion. Predicted to be located in cerebellar mossy fiber and presynaptic membrane. Predicted to be active in glutamatergic synapse and plasma membrane. Predicted to be integral component of postsynaptic density membrane. [provided by Alliance of Genome Resources, Apr 2022]

LRRC4B links:

LOC124904747 (HGNC:):

LOC124904747 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=0.08680481).

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRRC4B	NM_001080457.2 linkuse as main transcript	c.1895T>C	p.Val632Ala	missense_variant	3/3	ENST00000652263.1	NP_001073926.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
LRRC4B	ENST00000652263.1 linkuse as main transcript	c.1895T>C	p.Val632Ala	missense_variant	3/3		NM_001080457.2	ENSP00000498662.1	Q9NT99
LRRC4B	ENST00000389201.7 linkuse as main transcript	c.1895T>C	p.Val632Ala	missense_variant	3/3	2		ENSP00000373853.3	Q9NT99
LRRC4B	ENST00000599957.5 linkuse as main transcript	c.1895T>C	p.Val632Ala	missense_variant	3/3	3		ENSP00000471502.1	Q9NT99

Frequencies

GnomAD3 genomes

AF:

0.0000659

AC:

AN:

151840

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000967

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:

0.0000883

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000207

AC:

AN:

193408

Hom.:

AF XY:

0.0000278

AC XY:

AN XY:

107960

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:

0.0000450

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000581

AC:

AN:

1410830

Hom.:

Cov.:

AF XY:

0.0000557

AC XY:

AN XY:

700238

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:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000742

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000659

AC:

AN:

151840

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

74166

show subpopulations

Gnomad4 AFR

AF:

0.0000967

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:

0.0000883

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.00000842

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 21, 2023

The c.1895T>C (p.V632A) alteration is located in exon 3 (coding exon 2) of the LRRC4B gene. This alteration results from a T to C substitution at nucleotide position 1895, causing the valine (V) at amino acid position 632 to be replaced by an alanine (A). 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

0.072

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.63

CADD

Benign

DANN

Benign

0.66

DEOGEN2

Benign

0.0044

T;T

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.29

LIST_S2

Benign

0.33

.;T

M_CAP

Uncertain

0.24

MetaRNN

Benign

0.087

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.0

N;N

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-0.19

.;N

REVEL

Benign

0.021

Sift

Benign

0.66

.;T

Sift4G

Benign

0.38

T;T

Polyphen

0.0010

B;B

Vest4

0.10

MutPred

0.36

Gain of disorder (P = 0.03);Gain of disorder (P = 0.03);

MVP

0.20

MPC

1.3

ClinPred

0.023

GERP RS

2.6

Varity_R

0.046

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