X-12919675-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_138636.5(TLR8):c.635C>T(p.Ser212Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000331 in 1,209,310 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/20 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., 0 hem., cov: 23)

Exomes 𝑓: 0.0000027 ( 0 hom. 0 hem. )

Consequence

TLR8
NM_138636.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0820

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:):

TLR8-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.19308272).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TLR8	NM_138636.5 linkuse as main transcript	c.635C>T	p.Ser212Phe	missense_variant	2/2	ENST00000218032.7
TLR8-AS1	NR_030727.1 linkuse as main transcript	n.241-11342G>A		intron_variant, non_coding_transcript_variant
TLR8	NM_016610.4 linkuse as main transcript	c.689C>T	p.Ser230Phe	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TLR8	ENST00000218032.7 linkuse as main transcript	c.635C>T	p.Ser212Phe	missense_variant	2/2	1	NM_138636.5	P2	Q9NR97-1
TLR8	ENST00000311912.5 linkuse as main transcript	c.689C>T	p.Ser230Phe	missense_variant	3/3	1		A2	Q9NR97-2

Frequencies

GnomAD3 genomes

AF:

0.00000895

AC:

AN:

111679

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33829

show subpopulations

Gnomad AFR

AF:

0.0000326

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000273

AC:

AN:

1097631

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

362997

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:

0.00000356

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000895

AC:

AN:

111679

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33829

show subpopulations

Gnomad4 AFR

AF:

0.0000326

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 14, 2021

The c.635C>T (p.S212F) alteration is located in exon 2 (coding exon 2) of the TLR8 gene. This alteration results from a C to T substitution at nucleotide position 635, causing the serine (S) at amino acid position 212 to be replaced by a phenylalanine (F). 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

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.81

Cadd

Benign

1.9

Dann

Benign

0.93

DEOGEN2

Uncertain

0.49

T;.

FATHMM_MKL

Benign

0.21

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.0089

MetaRNN

Benign

0.19

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.2

L;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.24

PROVEAN

Uncertain

-3.8

D;D

REVEL

Benign

0.087

Sift

Uncertain

0.0010

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

0.0080

B;.

Vest4

0.098

MutPred

0.63

Loss of disorder (P = 0.0046);.;

MVP

0.082

MPC

0.83

ClinPred

0.54

GERP RS

-8.1

Varity_R

0.37

gMVP

0.41

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