JRKL (JRK like) is a nuclear DNA-binding protein involved in central nervous system development [GO annotations]. Limited functional data are available in the provided literature; however, JRKL has been identified as a genetic susceptibility locus associated with inflammatory and autoimmune conditions. Genome-wide association studies identified JRKL/CNTN5 as a novel susceptibility locus for Behçet's disease (BD), a systemic vasculitis, with the rs2848479 variant showing significant association (P = 5.00E-08, OR = 1.68 in discovery; P = 3.29E-10, OR = 1.66 in validation) 1. JRKL was also implicated in palindromic rheumatism pathogenesis, with whole-exome sequencing identifying novel polygenic mutations in JRKL among seronegative patients 2. Additionally, JRKL exhibited differential enhancer-promoter interactions in doxorubicin-resistant breast cancer cells, suggesting potential involvement in chr11 organization and cancer-related transcriptional regulation 3. A comprehensive Behçet's disease genetics review confirmed JRKL/CNTN5 among multiple genetic variants associated with disease pathogenesis 4. The precise molecular mechanisms by which JRKL contributes to these disease phenotypes remain unclear and warrant further functional investigation.