BRINP3 (BMP/retinoic acid inducible neural specific 3) is a member of the MACPF superfamily that functions as a negative regulator of cell proliferation and plays diverse roles in neuronal development and disease pathogenesis 1. The protein inhibits neuronal cell proliferation by negatively regulating cell cycle transition, while paradoxically promoting pituitary gonadotrope cell proliferation, migration, and invasion when overexpressed 1. BRINP3 demonstrates context-dependent oncogenic properties, being highly expressed in osteosarcoma tissues where it associates with poor prognosis and promotes cancer cell proliferation and migration through interaction with microtubule-associated protein 4 (MAP4) 2. In multiple myeloma, BRINP3 contributes to bortezomib resistance through BDNF/TrkB-mediated STAT3 phosphorylation 3. Behaviorally, Brinp3 knockout mice exhibit altered anxiety responses and sociability changes, suggesting its importance in anxiety moderation 1. BRINP3 genetic variants show population-specific adaptations, with rs11578671 correlating with hemoglobin levels in high-altitude Aymara females and being associated with susceptibility to peri-implantitis 45. The gene is also differentially expressed in various inflammatory conditions including papillary thyroid carcinoma metastases and ulcerative colitis 67.