rs5743701

Positions:

• chr4-153704533-C-G

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_001318789.2(TLR2):​c.1626C>G​(p.Leu542=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00165 in 1,613,912 control chromosomes in the GnomAD database, including 30 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0091 (14 hom., cov: 32)
  • Exomes 𝑓: 0.00087 (16 hom.)
• Consequence: TLR2 NM_001318789.2 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.193

Genes affected

TLR2 (HGNC:11848): (toll like receptor 2) The protein encoded by this gene is a member of the Toll-like receptor (TLR) family which plays a fundamental role in pathogen recognition and activation of innate immunity. TLRs are highly conserved from Drosophila to humans and share structural and functional similarities. This protein is a cell-surface protein that can form heterodimers with other TLR family members to recognize conserved molecules derived from microorganisms known as pathogen-associated molecular patterns (PAMPs). Activation of TLRs by PAMPs leads to an up-regulation of signaling pathways to modulate the host's inflammatory response. This gene is also thought to promote apoptosis in response to bacterial lipoproteins. This gene has been implicated in the pathogenesis of several autoimmune diseases. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 4-153704533-C-G is Benign according to our data. Variant chr4-153704533-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 776023.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.193 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00912 (1388/152194) while in subpopulation AFR AF= 0.0322 (1335/41516). AF 95% confidence interval is 0.0307. There are 14 homozygotes in gnomad4. There are 676 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 14 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TLR2	NM_001318789.2	c.1626C>G	p.Leu542=	synonymous_variant	3/3	ENST00000642700.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TLR2	ENST00000642700.2	c.1626C>G	p.Leu542=	synonymous_variant	3/3		NM_001318789.2	P1

Frequencies

GnomAD3 genomes AF: 0.00910 AC: 1384 AN: 152076 Hom.: 15 Cov.: 32

Gnomad AFR AF: 0.0322

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00229

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.00383

GnomAD3 exomes AF: 0.00214 AC: 535 AN: 250402 Hom.: 7 AF XY: 0.00148 AC XY: 201 AN XY: 135450

Gnomad AFR exome AF: 0.0306

Gnomad AMR exome AF: 0.000955

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: 0.0000708

Gnomad OTH exome AF: 0.000327

GnomAD4 exome AF: 0.000867 AC: 1267 AN: 1461718 Hom.: 16 Cov.: 34 AF XY: 0.000744 AC XY: 541 AN XY: 727154

Gnomad4 AFR exome AF: 0.0315

Gnomad4 AMR exome AF: 0.00123

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000928

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000162

Gnomad4 OTH exome AF: 0.00212

GnomAD4 genome AF: 0.00912 AC: 1388 AN: 152194 Hom.: 14 Cov.: 32 AF XY: 0.00909 AC XY: 676 AN XY: 74408

Gnomad4 AFR AF: 0.0322

Gnomad4 AMR AF: 0.00229

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000118

Gnomad4 OTH AF: 0.00379

Alfa AF: 0.00255 Hom.: 2

Bravo AF: 0.00980

Asia WGS AF: 0.000866 AC: 3 AN: 3478

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

TLR2-related disorder Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 19, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Aug 16, 2018

- -

Colorectal cancer;C1834752:Mycobacterium tuberculosis, susceptibility to;C1968668:Leprosy, susceptibility to, 3 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Apr 05, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.84
DANN	Benign	0.34

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: rs5743701; hg19: chr4-154625685;