NM_182919.4:c.2091C>T

Variant names:

• chr19-4816287-G-A
• rs756453374
• NM_182919.4:c.2091C>T

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_Strong BP6_Very_Strong BP7

The NM_182919.4(TICAM1):​c.2091C>T​(p.Asn697Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000513 in 1,519,944 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000054 (0 hom.)
• Consequence: TICAM1 NM_182919.4 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.116
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• herpes simplex encephalitis, susceptibility to, 4

  Inheritance: AD, SD, AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 19-4816287-G-A is Benign according to our data. Variant chr19-4816287-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 750810.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=0.116 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_182919.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TICAM1	NM_182919.4	MANE Select	c.2091C>T	p.Asn697Asn	synonymous	Exon 2 of 2	NP_891549.1	Q8IUC6
	TICAM1	NM_001385678.1		c.2049C>T	p.Asn683Asn	synonymous	Exon 3 of 3	NP_001372607.1
	TICAM1	NM_001385679.1		c.1956C>T	p.Asn652Asn	synonymous	Exon 2 of 2	NP_001372608.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TICAM1	ENST00000248244.6	TSL:1 MANE Select	c.2091C>T	p.Asn697Asn	synonymous	Exon 2 of 2	ENSP00000248244.4	Q8IUC6
	TICAM1	ENST00000868535.1		c.2091C>T	p.Asn697Asn	synonymous	Exon 3 of 3	ENSP00000538594.1

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152224 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000166 AC: 3 AN: 180454 AF XY: 0.0000105

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000228

Gnomad OTH exome AF: 0.000242

GnomAD4 exome AF: 0.0000541 AC: 74 AN: 1367720 Hom.: 0 Cov.: 36 AF XY: 0.0000477 AC XY: 32 AN XY: 670388

African (AFR) AF: 0.00 AC: 0 AN: 30272

American (AMR) AF: 0.00 AC: 0 AN: 29364

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 20178

East Asian (EAS) AF: 0.00 AC: 0 AN: 38798

South Asian (SAS) AF: 0.0000281 AC: 2 AN: 71152

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49268

Middle Eastern (MID) AF: 0.000190 AC: 1 AN: 5254

European-Non Finnish (NFE) AF: 0.0000618 AC: 66 AN: 1067188

Other (OTH) AF: 0.0000889 AC: 5 AN: 56246

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152224 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74362

African (AFR) AF: 0.0000241 AC: 1 AN: 41456

American (AMR) AF: 0.00 AC: 0 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5208

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000441 AC: 3 AN: 68040

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000302

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Herpes simplex encephalitis, susceptibility to, 4 (1)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	4.5
DANN	Benign	0.83
PhyloP100		0.12

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

Other links and lift over

dbSNP: rs756453374; hg19: chr19-4816299;