KCNK10 (TREK-2) encodes a two-pore domain potassium channel that functions as a voltage-dependent outward rectifier and leak channel, playing crucial roles in neuronal excitability and pain modulation. The channel exhibits complex gating mechanisms, converting from voltage-dependent to voltage-independent 'leak' conductance upon stimulation by mechanical stretch, acidic pH, heat, and lipids 1. KCNK10 forms both homodimers and heterodimers with other K2P channels, creating functional channels with distinct regulatory properties. In nociceptive neurons, TREK-2 activation by PD-L1 induces hyperpolarization and inhibits pain transmission 2. The channel shows significant expression in the central nervous system, with alternative splice variants contributing to functional diversity 3. Disease relevance includes upregulation in temporal lobe epilepsy, where increased KCNK10 expression may serve a neuroprotective function 4, and expression in ovarian cancer where modulators affect cell proliferation and apoptosis 5. Genetic variants in KCNK10 have been associated with cardiac electrical activity parameters in HIV-positive individuals 6. The channel's polymodal regulation and role in cellular excitability make it a potential therapeutic target for pain, epilepsy, and cancer treatment.