Pacira BioSciences Inc. announced updated three-year results from an open-label Phase 1 clinical trial evaluating PCRX-201 (enekinragene inzadenovec), a novel gene therapy candidate for osteoarthritis of the knee. The data, which have already been presented, demonstrate that a single intra-articular injection of PCRX-201 was well tolerated and produced sustained clinical improvements in pain, stiffness, and function for up to 156 weeks across all patient subgroups and disease severities. PCRX-201 utilizes a high-capacity adenovirus gene therapy vector to increase production of interleukin-1 receptor antagonist (IL-1Ra), aiming to reduce chronic inflammation in the knee joint. The results support Pacira's ongoing Phase 2 study strategy. In March 2024, PCRX-201 received Regenerative Medicine Advanced Therapy (RMAT) designation from the U.S. FDA.