chr19-4816405-G-A

Position:

chr19-4816405-G-A

Variant summary

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

The NM_182919.4(TICAM1):c.1973C>T(p.Pro658Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000331 in 1,570,466 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P658S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

TICAM1
NM_182919.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.411

Variant links:

Genes affected

TICAM1 (HGNC:18348): (TIR domain containing adaptor molecule 1) This gene encodes an adaptor protein containing a Toll/interleukin-1 receptor (TIR) homology domain, which is an intracellular signaling domain that mediates protein-protein interactions between the Toll-like receptors (TLRs) and signal-transduction components. This protein is involved in native immunity against invading pathogens. It specifically interacts with toll-like receptor 3, but not with other TLRs, and this association mediates dsRNA induction of interferon-beta through activation of nuclear factor kappa-B, during an antiviral immune response. Mutations in this gene are associated with encephalopathy, acute, infection-induced. [provided by RefSeq, Jul 2020]

TICAM1 links:

Genome browser will be placed here

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=0.03544095).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TICAM1	NM_182919.4 linkuse as main transcript	c.1973C>T	p.Pro658Leu	missense_variant	2/2	ENST00000248244.6
TICAM1	NM_001385678.1 linkuse as main transcript	c.1931C>T	p.Pro644Leu	missense_variant	3/3
TICAM1	NM_001385679.1 linkuse as main transcript	c.1838C>T	p.Pro613Leu	missense_variant	2/2
TICAM1	NM_001385680.1 linkuse as main transcript	c.1331C>T	p.Pro444Leu	missense_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TICAM1	ENST00000248244.6 linkuse as main transcript	c.1973C>T	p.Pro658Leu	missense_variant	2/2	1	NM_182919.4	P1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.0000685

AC:

AN:

204264

Hom.:

AF XY:

0.0000824

AC XY:

AN XY:

109166

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000451

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000592

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000106

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000303

AC:

AN:

1418194

Hom.:

Cov.:

AF XY:

0.0000285

AC XY:

AN XY:

702178

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000323

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000127

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000265

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152272

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.0000659

Hom.:

Bravo

AF:

0.000121

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000495

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Herpes simplex encephalitis, susceptibility to, 4

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 08, 2021

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 658 of the TICAM1 protein (p.Pro658Leu). This variant is present in population databases (rs148396522, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with TICAM1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1021957). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.098

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.57

CADD

Benign

6.0

DANN

Benign

0.95

DEOGEN2

Benign

0.34

Eigen

Benign

-0.93

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.098

LIST_S2

Benign

0.42

M_CAP

Benign

0.013

MetaRNN

Benign

0.035

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.0

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.5

REVEL

Benign

0.010

Sift

Uncertain

0.0080

Sift4G

Uncertain

0.017

Polyphen

0.22

Vest4

0.13

MVP

0.12

MPC

0.64

ClinPred

0.11

GERP RS

-0.30

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

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