TRIML2 (tripartite motif family like 2) is a eutherian-specific regulatory protein that functions primarily as a modulator of cellular stress responses and immune pathways. The protein lacks the catalytic RING domain found in other TRIM family members but retains regulatory functions through protein-protein interactions 1. TRIML2 acts as a key component in p53-mediated apoptotic signaling, where it interacts with p53 and enhances its SUMOylation, thereby promoting the transactivation of proapoptotic genes including PIDD, PIG3, and PIG6, particularly under prolonged oxidative stress conditions 2. The protein demonstrates dual roles in different cellular contexts: it functions as a tumor suppressor in some settings, with its ubiquitinated form being associated with prolonged cell survival during viral lytic replication 3, while paradoxically promoting tumoral growth in oral squamous cell carcinoma through cell cycle regulation 4. TRIML2 also serves as an anti-inflammatory regulator in trophoblasts, where its expression reduces proinflammatory cytokine production and enhances cell survival during viral stimulation, supporting its evolutionary role in eutherian placentation 1. Clinically, TRIML2 shows potential as a biomarker and therapeutic target across multiple diseases, with altered methylation patterns observed in PCOS 5 and associations with Parkinson's disease risk 6.