Genetic Variant TLR8:p.Pro218His (chrX-12919693-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_138636.5(TLR8):c.653C>A(p.Pro218His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000166 in 1,208,359 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 9.1e-7 ( 0 hom. 1 hem. )

Consequence

TLR8
NM_138636.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.277

Variant links:

Genes affected

TLR8 (HGNC:15632): (toll like receptor 8) 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 gene is predominantly expressed in lung and peripheral blood leukocytes, and lies in close proximity to another family member, TLR7, on chromosome X. [provided by RefSeq, Jul 2008]

TLR8 links:

TLR8-AS1 (HGNC:40720): (TLR8 antisense RNA 1)

TLR8-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.08247998).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TLR8	NM_138636.5 link	c.653C>A	p.Pro218His	missense_variant	Exon 2 of 2	ENST00000218032.7	NP_619542.1	Q9NR97-1
TLR8	NM_016610.4 link	c.707C>A	p.Pro236His	missense_variant	Exon 3 of 3		NP_057694.2	Q9NR97-2
TLR8-AS1	NR_030727.1 link	n.241-11360G>T		intron_variant	Intron 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TLR8	ENST00000218032.7 link	c.653C>A	p.Pro218His	missense_variant	Exon 2 of 2	1	NM_138636.5	ENSP00000218032.7		Q9NR97-1
TLR8	ENST00000311912.5 link	c.707C>A	p.Pro236His	missense_variant	Exon 3 of 3	1		ENSP00000312082.5		Q9NR97-2

Frequencies

GnomAD3 genomes

AF:

0.00000898

AC:

AN:

111360

Hom.:

Cov.:

AF XY:

0.0000298

AC XY:

AN XY:

33546

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000550

AC:

AN:

181719

Hom.:

AF XY:

0.0000150

AC XY:

AN XY:

66545

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000123

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

9.12e-7

AC:

AN:

1096999

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

362375

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000898

AC:

AN:

111360

Hom.:

Cov.:

AF XY:

0.0000298

AC XY:

AN XY:

33546

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Nov 22, 2022

Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.90

CADD

Benign

4.4

DANN

Benign

0.53

DEOGEN2

Benign

0.16

T;.

FATHMM_MKL

Benign

0.099

LIST_S2

Benign

0.59

T;T

M_CAP

Benign

0.0060

MetaRNN

Benign

0.082

T;T

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.6

L;.

PrimateAI

Benign

0.24

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.046

Sift

Benign

0.21

T;T

Sift4G

Benign

0.89

T;T

Polyphen

0.079

B;.

Vest4

0.094

MutPred

0.36

Loss of catalytic residue at P217 (P = 0.0191);.;

MVP

0.14

MPC

0.87

ClinPred

0.047

GERP RS

4.0

Varity_R

0.26

gMVP

0.52

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over