The protein encoded by this gene is a member of the interleukin 1 receptor family and is similar to the interleukin 1 accessory proteins. It is most closely related to interleukin 1 receptor accessory protein-like 2 (IL1RAPL2). This gene and IL1RAPL2 are located at a region on chromosome X that is associated with X-linked non-syndromic mental retardation. Deletions and mutations in this gene were found in patients with mental retardation. This gene is expressed at a high level in post-natal brain structures involved in the hippocampal memory system, which suggests a specialized role in the physiological processes underlying memory and learning abilities.
IL1RAPL1; interleukin 1 receptor accessory protein-like 1; IL1RAPL, mental retardation, X linked 10 , mental retardation, X linked 21 , mental retardation, X linked 34 , MRX10, MRX21, MRX34; interleukin-1 receptor accessory protein-like 1; IL1R8; OPHN4; TIGIRR 2; IL 1 RAPL 1; IL 1RAPL 1; IL-1-RAPL-1; IL-1RAPL-1; IL1RAPL 1; IL1RAPL; IL1RAPL-1; Interleukin 1 receptor 8; Interleukin 1 receptor accessory protein like 1; IRPL1_HUMAN; Mental retardation X linked 10; Mental retardation X linked 21; Mental retardation X linked 34; MRX 21; MRX 34; MRX10; MRX21; MRX34; Oligophrenin 4; Oligophrenin-4; Oligophrenin4; OPHN 4; Three immunoglobulin domain containing IL 1 receptor related 2; Three immunoglobulin domain-containing IL-1 receptor-related 2; TIGIRR-2; TIGIRR2; X linked interleukin 1 receptor accessory protein like 1; X-linked interleukin-1 receptor accessory protein-like 1; interleukin 1 receptor-8; mental retardation, X-linked 10; three immunoglobulin domain-containing IL-1 r