SIGIRR

protein-coding

single 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

NM_001135054.2

Inheritance

—

ClinVar variants

U:71B:6

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e 0.61

Max pathogenic AF

—

Genomic locus

chr11:405,715-417,455

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~11.7 kb
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GenCC 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

2 Conditions Cataloged
not specifiedTotal: 70
not providedTotal: 4

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.

EffectPLPVUSLBBSum
synonymous
2
clinvar
2
clinvar
4
missense
69
clinvar
2
clinvar
71
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
2
clinvar
2
Total00714277
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 71 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_001135054.2RefSeqNP_001128526.19MANE Select
ENST00000431843.7EnsemblENSP00000403104.29MANE Select
NM_001135053.2RefSeqNP_001128525.19Standard
NM_021805.3RefSeqNP_068577.29Standard

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: gnomAD

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-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense-0.04852422401.010.00001362568
Missense (PolyPhen)8980.1761.1101871
Synonymous-1.491331131.180.00000699879
Loss of Function1.561118.20.6059.29e-7198

Population LoF Frequency

PopulationCAFp-valueStatus
African0.000380.00037rare
Latino/Admixed American0.000510.00046rare
Ashkenazi Jewish0.000530.00050rare
East Asian0.000230.00022rare
Finnish00.0absent
European (Non-Finnish)0.000600.00052rare
South Asian0.0000660.000065rare
Other0.00100.00098notable

dbNSFP Gene Annotations

Source: dbNSFP

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

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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