Core Viewpoint - China Biopharmaceutical (01177) announced that its self-developed innovative drug TQH3906, a TYK2/JAK1 JH2 allosteric inhibitor, has completed Phase II clinical trials for moderate to severe plaque psoriasis, demonstrating good safety and efficacy [1][2]. Group 1: Clinical Trial Results - TQH3906 showed good safety and tolerability across all dosage groups, achieving the primary endpoint of the Phase II study [1]. - The study was a randomized, double-blind, placebo-controlled, multi-center trial involving 209 patients, with a daily oral administration regimen [1]. - At the recommended Phase II dose (RP2D), after 12 weeks of treatment, the PASI75 response rate exceeded 90% and the PASI90 response rate exceeded 70%, significantly outperforming the placebo group, which had PASI75 and PASI90 response rates of approximately 10% and 5%, respectively [2]. Group 2: Efficacy and Safety Comparison - The efficacy level of TQH3906 is comparable to IL-17/IL-23 targeted biologics and shows superior efficacy compared to other marketed oral psoriasis treatments like Deucravacitinib and Apremilast [2]. - The overall safety profile of TQH3906 is good, with the incidence of adverse events similar to the placebo group, and most treatment-emergent adverse events (TEAEs) were of grade 1-2 severity [2]. - No new safety signals were observed, and the safety characteristics are similar to other TYK2 inhibitors [2]. Group 3: Market Context and Future Research - Oral small molecule targeted therapies like TQH3906 offer advantages over antibody-based biologics, including convenience of administration, high tolerability, and better patient compliance [3]. - Currently, the only approved oral small molecule drugs for plaque psoriasis in China are PDE-4 inhibitors and Deucravacitinib, which have lower PASI75 and PASI90 response rates compared to TQH3906 [3]. - TQH3906 targets the pseudo-kinase domain (JH2) of TYK2/JAK1, enhancing selectivity against JAK2, JAK3, and other kinases, potentially leading to better safety profiles [3]. - The company plans to explore TQH3906 for new indications in inflammatory bowel disease, psoriatic arthritis, and other autoimmune and dermatological conditions [3].