Genetic Variant TLR4:c.-180G>C (chr9-117704533-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_003266.4(TLR4):c.-180G>C variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,726 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

TLR4
NM_003266.4 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0920

Variant links:

Genes affected

TLR4 (HGNC:11850): (toll like receptor 4) 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. They recognize pathogen-associated molecular patterns that are expressed on infectious agents, and mediate the production of cytokines necessary for the development of effective immunity. The various TLRs exhibit different patterns of expression. In silico studies have found a particularly strong binding of surface TLR4 with the spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of Coronavirus disease-2019 (COVID-19). This receptor has also been implicated in signal transduction events induced by lipopolysaccharide (LPS) found in most gram-negative bacteria. Mutations in this gene have been associated with differences in LPS responsiveness, and with susceptibility to age-related macular degeneration. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2020]

TLR4 links:

ENSG00000285082 (HGNC:):

ENSG00000285082 links:

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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=0.018798023).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TLR4	NM_138554.5 link	c.61G>C	p.Val21Leu	missense_variant	Exon 1 of 3	ENST00000355622.8	NP_612564.1	O00206-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ENSG00000285082	ENST00000697666.1 link	c.-180G>C		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 5			ENSP00000513391.1	A0A8V8TMK6
TLR4	ENST00000355622.8 link	c.61G>C	p.Val21Leu	missense_variant	Exon 1 of 3	1	NM_138554.5	ENSP00000363089.5	O00206-1
ENSG00000285082	ENST00000697666.1 link	c.-180G>C		5_prime_UTR_variant	Exon 1 of 5			ENSP00000513391.1	A0A8V8TMK6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000240

AC:

AN:

250310

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135288

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000327

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461726

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727174

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000126

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.062

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.59

CADD

Benign

9.8

DANN

Benign

0.74

DEOGEN2

Benign

0.090

.;.;T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.032

LIST_S2

Benign

0.63

T;T;.;T

M_CAP

Benign

0.0020

MetaRNN

Benign

0.019

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-1.5

.;.;N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

0.31

.;.;.;N

REVEL

Benign

0.012

Sift

Benign

1.0

.;.;.;T

Sift4G

Benign

1.0

.;.;.;T

Polyphen

0.0030

.;.;B;B

Vest4

0.043

MutPred

0.38

Gain of catalytic residue at V21 (P = 0.0441);Gain of catalytic residue at V21 (P = 0.0441);Gain of catalytic residue at V21 (P = 0.0441);Gain of catalytic residue at V21 (P = 0.0441);

MVP

0.47

MPC

0.084

ClinPred

0.015

GERP RS

-2.0

Varity_R

0.039

gMVP

0.21

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over