19-4818047-C-G

Position:

• chr19-4818047-C-G

Variant summary

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

The NM_182919.4(TICAM1):​c.331G>C​(p.Ala111Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000687 in 1,456,090 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 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)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: TICAM1 NM_182919.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.03

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]

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=0.0974589).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TICAM1	NM_182919.4	c.331G>C	p.Ala111Pro	missense_variant	2/2	ENST00000248244.6	NP_891549.1
TICAM1	NM_001385678.1	c.289G>C	p.Ala97Pro	missense_variant	3/3		NP_001372607.1
TICAM1	NM_001385679.1	c.196G>C	p.Ala66Pro	missense_variant	2/2		NP_001372608.1
TICAM1	NM_001385680.1	c.-71-241G>C		intron_variant			NP_001372609.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TICAM1	ENST00000248244.6	c.331G>C	p.Ala111Pro	missense_variant	2/2	1	NM_182919.4	ENSP00000248244	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1456090 Hom.: 0 Cov.: 80 AF XY: 0.00000138 AC XY: 1 AN XY: 724606

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000113

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.070	T
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.66
FATHMM_MKL	Benign	0.052	N
LIST_S2	Benign	0.54	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.097	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-0.92	N
REVEL	Benign	0.099
Sift	Benign	0.21	T
Sift4G	Uncertain	0.040	D
Polyphen		0.024	B
Vest4		0.36
MutPred		0.32		Gain of relative solvent accessibility (P = 0.0082);
MVP		0.30
MPC		0.30
ClinPred		0.14	T
GERP RS		4.1
Varity_R		0.54

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: rs201291933; hg19: chr19-4818059;