19-54220564-A-T

Position:

• chr19-54220564-A-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_006864.4(LILRB3):​c.1222T>A​(p.Ser408Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 9/12 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00015 (2 hom., cov: 18)
  • Exomes 𝑓: 0.000017 (2 hom.)
  • Failed GnomAD Quality Control
• Consequence: LILRB3 NM_006864.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.07

Genes affected

LILRB3 (HGNC:6607): (leukocyte immunoglobulin like receptor B3) 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]

LOC124904768 (HGNC:):

RPS9 (HGNC:10442): (ribosomal protein S9) Ribosomes, the organelles that catalyze protein synthesis, consist of a small 40S subunit and a large 60S subunit. Together these subunits are composed of 4 RNA species and approximately 80 structurally distinct proteins. This gene encodes a ribosomal protein that is a component of the 40S subunit. The protein belongs to the S4P family of ribosomal proteins. It is located in the cytoplasm. Variable expression of this gene in colorectal cancers compared to adjacent normal tissues has been observed, although no correlation between the level of expression and the severity of the disease has been found. As is typical for genes encoding ribosomal proteins, multiple processed pseudogenes derived from this gene are dispersed through the genome. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.14835685).
• BS2: High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LILRB3	NM_006864.4	c.1222T>A	p.Ser408Thr	missense_variant	6/13	ENST00000445347.2
LOC124904768	XR_007067339.1	n.710+960A>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LILRB3	ENST00000445347.2	c.1222T>A	p.Ser408Thr	missense_variant	6/13	2	NM_006864.4	A2

Frequencies

GnomAD3 genomes AF: 0.000146 AC: 16 AN: 109960 Hom.: 2 Cov.: 18

Gnomad AFR AF: 0.000397

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000326

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: 0.0000196

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000173 AC: 22 AN: 1271992 Hom.: 2 Cov.: 41 AF XY: 0.0000204 AC XY: 13 AN XY: 635882

Gnomad4 AFR exome AF: 0.000371

Gnomad4 AMR exome AF: 0.0000545

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000501

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000103

Gnomad4 OTH exome AF: 0.0000754

GnomAD4 genome AF: 0.000145 AC: 16 AN: 110032 Hom.: 2 Cov.: 18 AF XY: 0.000131 AC XY: 7 AN XY: 53300

Gnomad4 AFR AF: 0.000396

Gnomad4 AMR AF: 0.000326

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000196

Gnomad4 OTH AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.1222T>A (p.S408T) alteration is located in exon 6 (coding exon 6) of the LILRB3 gene. This alteration results from a T to A substitution at nucleotide position 1222, causing the serine (S) at amino acid position 408 to be replaced by a threonine (T). 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	-0.26	T
BayesDel_noAF	Benign	-0.61
CADD	Benign	13
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.94
FATHMM_MKL	Benign	0.050	N
M_CAP	Benign	0.0018	T
MetaRNN	Benign	0.15	T;T;T
MetaSVM	Benign	-0.99	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N
PROVEAN	Benign	-2.3	N;N;N
Sift	Benign	0.10	T;T;T
Sift4G	Benign	0.064	T;T;T
Vest4		0.39
MutPred		0.39		Gain of glycosylation at S408 (P = 0.0144);Gain of glycosylation at S408 (P = 0.0144);Gain of glycosylation at S408 (P = 0.0144);
MVP		0.15
ClinPred		0.30	T
GERP RS		1.7
gMVP		0.31

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs765393514; hg19: chr19-54744186;