4-186083063-C-A

Position:

• chr4-186083063-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003265.3(TLR3):​c.1377C>A​(p.Phe459Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict 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)
• Consequence: TLR3 NM_003265.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.944

Genes affected

TLR3 (HGNC:11849): (toll like receptor 3) 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 (PAMPs) 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. This receptor is most abundantly expressed in placenta and pancreas, and is restricted to the dendritic subpopulation of the leukocytes. It recognizes dsRNA associated with viral infection, and induces the activation of NF-kappaB and the production of type I interferons. It thus plays a role in host defense against multiple viruses. [provided by RefSeq, Jul 2021]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09996948).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TLR3	NM_003265.3	c.1377C>A	p.Phe459Leu	missense_variant	4/5	ENST00000296795.8	NP_003256.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TLR3	ENST00000296795.8	c.1377C>A	p.Phe459Leu	missense_variant	4/5	1	NM_003265.3	ENSP00000296795	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 70

GnomAD4 genome Cov.: 32

Alfa AF: 0.201 Hom.: 6761

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.32
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	12
DANN	Benign	0.93
DEOGEN2	Benign	0.027	T;.
Eigen	Benign	-0.89
Eigen_PC	Benign	-0.74
FATHMM_MKL	Benign	0.43	N
LIST_S2	Benign	0.79	T;D
M_CAP	Benign	0.0049	T
MetaRNN	Benign	0.10	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	-1.1	N;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	0.66	N;N
REVEL	Benign	0.061
Sift	Benign	0.17	T;T
Sift4G	Benign	0.31	T;T
Polyphen		0.0030	B;.
Vest4		0.062
MutPred		0.46		Loss of sheet (P = 0.0457);.;
MVP		0.57
MPC		0.16
ClinPred		0.58	D
GERP RS		0.28
Varity_R		0.079
gMVP		0.28

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: rs3775290; hg19: chr4-187004217;