KIAA1191 is a cytoplasmic protein with potential NADPH-dependent oxidoreductase activity that appears to function as a regulatory factor in cell survival and stress responses. The protein localizes to the cytoplasm and mitochondria 1, and bioinformatic analyses suggest it belongs to the flavine-containing monooxygenase family, linking it to proteins involved in growth cone guidance and neuronal development 1. In multiple myeloma, KIAA1191 high expression suppresses cell proliferation and migration while promoting necroptotic cell death through upregulation of RIP1, RIP3, and CYLD proteins 2. This activity synergizes with bortezomib chemotherapy, suggesting therapeutic potential 2. KIAA1191 expression correlates with improved overall survival and progression-free survival in MM patients 2. Recently, KIAA1191 was identified as a novel susceptibility gene for gestational diabetes mellitus (GDM) through integrative genomic analysis 3. Additionally, KIAA1191 was identified as a candidate gene associated with plague resistance in prairie dogs and belongs to the same protein class as plague-resistance genes in other species, suggesting potential roles in pathogen defense through parallel evolutionary mechanisms 4. Collectively, KIAA1191 appears to regulate cell death pathways, metabolic processes, and immune responses, with emerging clinical relevance in cancer and metabolic disease.