19-54636494-C-A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001081637.3(LILRB1):c.1654C>A(p.Gln552Lys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000627 in 1,611,288 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000045 ( 1 hom. )

Consequence

LILRB1
NM_001081637.3 missense, splice_region

Scores

Splicing: ADA: 0.00004858

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.153

Variant links:

Genes affected

LILRB1 (HGNC:6605): (leukocyte immunoglobulin like receptor B1) This gene is a member of the leukocyte immunoglobulin-like receptor (LIR) family, which is found in a gene cluster at chromosomal region 19q13.4. The encoded protein belongs to the subfamily B class of LIR receptors which contain two or four extracellular immunoglobulin domains, a transmembrane domain, and two to four cytoplasmic immunoreceptor tyrosine-based inhibitory motifs (ITIMs). The receptor is expressed on immune cells where it binds to MHC class I molecules on antigen-presenting cells and transduces a negative signal that inhibits stimulation of an immune response. It is thought to control inflammatory responses and cytotoxicity to help focus the immune response and limit autoreactivity. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

LILRB1 links:

LILRB1-AS1 (HGNC:53114): (LILRB1 antisense RNA 1)

LILRB1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04632622).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LILRB1	NM_001081637.3 link	c.1654C>A	p.Gln552Lys	missense_variant, splice_region_variant	Exon 14 of 15	ENST00000324602.12	NP_001075106.2	Q8NHL6A0A087WSV6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LILRB1	ENST00000324602.12 link	c.1654C>A	p.Gln552Lys	missense_variant, splice_region_variant	Exon 14 of 15	5	NM_001081637.3	ENSP00000315997.7		A0A087WSV6

Frequencies

GnomAD3 genomes

AF:

0.000231

AC:

AN:

151820

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000751

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000388

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:

0.0000727

AC:

AN:

247628

Hom.:

AF XY:

0.0000598

AC XY:

AN XY:

133728

show subpopulations

Gnomad AFR exome

AF:

0.000436

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000326

Gnomad SAS exome

AF:

0.0000663

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.0000452

AC:

AN:

1459468

Hom.:

Cov.:

AF XY:

0.0000344

AC XY:

AN XY:

726040

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.000731

GnomAD4 genome

AF:

0.000231

AC:

AN:

151820

Hom.:

Cov.:

AF XY:

0.000256

AC XY:

AN XY:

74146

show subpopulations

Gnomad4 AFR

AF:

0.000751

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000388

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.000227

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000115

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1654C>A (p.Q552K) alteration is located in exon 14 (coding exon 13) of the LILRB1 gene. This alteration results from a C to A substitution at nucleotide position 1654, causing the glutamine (Q) at amino acid position 552 to be replaced by a lysine (K). 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

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.70

CADD

Benign

DANN

Benign

0.55

DEOGEN2

Benign

0.026

.;.;T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.023

LIST_S2

Benign

0.47

T;T;T;.

M_CAP

Benign

0.00088

MetaRNN

Benign

0.046

T;T;T;T

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.30

N;N;N;N

REVEL

Benign

0.0040

Sift

Benign

0.79

T;T;T;T

Sift4G

Benign

0.97

T;T;T;T

Vest4

0.14

MVP

0.055

MPC

0.070

ClinPred

0.0024

GERP RS

-2.7

gMVP

0.030

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000049

dbscSNV1_RF

Benign

0.0

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