19-54631713-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001081637.3(LILRB1):c.284G>A(p.Arg95Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000239 in 1,614,018 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00028 (0 hom., cov: 57)
  • Exomes 𝑓: 0.00023 (0 hom.)
• Consequence: LILRB1 NM_001081637.3 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -2.24

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]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.014741689).
• BP6: Variant 19-54631713-G-A is Benign according to our data. Variant chr19-54631713-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2355285.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LILRB1	NM_001081637.3	c.284G>A	p.Arg95Gln	missense_variant	4/15	ENST00000324602.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LILRB1	ENST00000324602.12	c.284G>A	p.Arg95Gln	missense_variant	4/15	5	NM_001081637.3	P4

Frequencies

GnomAD3 genomes AF: 0.000282 AC: 43 AN: 152270 Hom.: 0 Cov.: 57

Gnomad AFR AF: 0.0000723

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000458

Gnomad ASJ AF: 0.00577

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00103

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000370 AC: 93 AN: 251444 Hom.: 0 AF XY: 0.000361 AC XY: 49 AN XY: 135890

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00825

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000653

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000235 AC: 343 AN: 1461630 Hom.: 0 Cov.: 130 AF XY: 0.000226 AC XY: 164 AN XY: 727114

Gnomad4 AFR exome AF: 0.0000896

Gnomad4 AMR exome AF: 0.000157

Gnomad4 ASJ exome AF: 0.00739

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.000302

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000675

Gnomad4 OTH exome AF: 0.000613

GnomAD4 genome AF: 0.000282 AC: 43 AN: 152388 Hom.: 0 Cov.: 57 AF XY: 0.000255 AC XY: 19 AN XY: 74516

Gnomad4 AFR AF: 0.0000721

Gnomad4 AMR AF: 0.000457

Gnomad4 ASJ AF: 0.00577

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00104

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000632 Hom.: 0

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.000814 AC: 7

ExAC AF: 0.000272 AC: 33

EpiCase AF: 0.000218

EpiControl AF: 0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 16, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.53	T
BayesDel_noAF	Benign	-0.76
Cadd	Benign	1.8
Dann	Benign	0.85
DEOGEN2	Benign	0.026	T;T;.;.;T;.;.
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.7
FATHMM_MKL	Benign	0.013	N
LIST_S2	Benign	0.69	T;T;T;T;T;T;.
M_CAP	Benign	0.00063	T
MetaRNN	Benign	0.015	T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-1.8	N;N;N;N;N;N;N
REVEL	Benign	0.011
Sift	Benign	0.48	T;T;T;T;T;T;T
Sift4G	Benign	0.52	T;T;T;T;T;T;T
Polyphen		0.77	.;.;.;.;.;P;.
Vest4		0.095
MVP		0.35
MPC		0.064
ClinPred		0.015	T
GERP RS		-4.2
gMVP		0.057

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

Other links and lift over

dbSNP: rs200251602; hg19: chr19-55143164;