SIGIRR
protein-codingsingle Ig and TIR domain containing, the group of TIR domain containing|Immunoglobulin like domain containing
Gene summary
Involved in negative regulation of Toll signaling pathway. Located in membrane. [provided by Alliance of Genome Resources, Jul 2025]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~11.7 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to SIGIRR variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001135054.2. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 2 | 2 | 4 | |||
| missense | 69 | 2 | 71 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 2 | 2 | ||||
| Total | 0 | 0 | 71 | 4 | 2 | 77 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001128526.1 | 9 | MANE Select | |
| Ensembl | ENSP00000403104.2 | 9 | MANE Select | |
| RefSeq | NP_001128525.1 | 9 | Standard | |
| RefSeq | NP_068577.2 | 9 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Regulation of toll-like receptor signaling pathway
- Signaling by Interleukins
- Cytokine Signaling in Immune system
- Toll-Like Receptors Cascades
- Innate Immune System
Biological Process
- negative regulation of cytokine-mediated signaling pathway
- acute-phase response
- signal transduction
- negative regulation of lipopolysaccharide-mediated signaling pathway
- negative regulation of DNA-binding transcription factor activity
Molecular Function
- protein binding
Cellular Component
- plasma membrane
- membrane
- integral component of membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000431843
- Coding exons
- 9
- Length
- 11740
- Individuals with no LoFs
- 125318
- Homozygous LoFs
- 1
- Heterozygous LoFs
- 97
- Defined
- 125416
- p
- 0.000391
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.0485 | 242 | 240 | 1.01 | 0.0000136 | 2568 |
| Missense (PolyPhen) | 89 | 80.176 | 1.1101 | 871 | ||
| Synonymous | -1.49 | 133 | 113 | 1.18 | 0.00000699 | 879 |
| Loss of Function | 1.56 | 11 | 18.2 | 0.605 | 9.29e-7 | 198 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00038 | 0.00037 | rare |
| Latino/Admixed American | 0.00051 | 0.00046 | rare |
| Ashkenazi Jewish | 0.00053 | 0.00050 | rare |
| East Asian | 0.00023 | 0.00022 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.00060 | 0.00052 | rare |
| South Asian | 0.000066 | 0.000065 | rare |
| Other | 0.0010 | 0.00098 | notable |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Acts as a negative regulator of the Toll-like and IL-1R receptor signaling pathways. Attenuates the recruitment of receptor-proximal signaling components to the TLR4 receptor, probably through an TIR-TIR domain interaction with TLR4. Through its extracellular domain interferes with the heterodimerization of Il1R1 and IL1RAP. {ECO:0000269|PubMed:12925853, ECO:0000269|PubMed:14715412, ECO:0000269|PubMed:15866876, ECO:0000269|PubMed:25963006}.;
Recessive Scores
- pRec
- 0.121
Intolerance Scores
- LoFtool
- 0.738
- RVIS EVS
- 0.06
- RVIS percentile EVS
- 58.85
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.327
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |