Core Insights - AnaptysBio, Inc. has released updated data from the Phase 2b trial of rosnilimab, demonstrating significant efficacy in treating rheumatoid arthritis [1][2] - The drug showed durable responses and was well tolerated compared to standard biologics and JAK inhibitors [2][4] - Analyst Emily Bodnar upgraded AnaptysBio's rating from Neutral to Buy, raising the price target from $22 to $38 based on positive trial data [4] Efficacy and Safety - In a 424-patient trial, rosnilimab achieved JAK-like efficacy on multiple measures, including low disease activity (LDA) and remission on the Clinical Disease Activity Index (CDAI) [1] - At Week 12, all three doses of rosnilimab (100mg Q4W, 400mg Q4W, 600mg Q2W) showed statistically significant reductions in DAS-28 CRP and ACR20 compared to placebo [2] - By Week 12, 45% of patients achieved CDAI LDA, increasing to 69% by Week 14 across all doses [2] Patient Outcomes - Rosnilimab demonstrated clinically meaningful improvements in patient-reported outcomes, including pain visual analog scale (VAS) and HAQ-Disability Index [4] - As of the March 11, 2025 data cutoff, 83% of patients remained in LDA at Week 34, with a median CDAI of 13 for those not sustaining LDA [3] Competitive Landscape - Data from the SELECT-CHOICE trial indicated similar efficacy results for AbbVie’s Rinvoq and Bristol Myers Squibb’s Orencia, aligning with rosnilimab's outcomes [5] - In contrast, Eli Lilly's discontinued PD-1 agonist peresolimab showed a decline in CDAI LDA rates, highlighting rosnilimab's stronger performance [6] - Johnson & Johnson is expected to present early data for its PD-1 agonist at the upcoming EULAR conference, although its study is smaller than AnaptysBio's [6]

每经记者 许立波 林姿辰 每经编辑 文多 4月21日，微信公众号"梅斯肿瘤新前沿"发布8篇文章，其中部分内容与恒瑞医药（SH600276）自研PD-1（程序性死亡受体1）抑制剂卡瑞利珠单抗（商品 名：艾瑞卡）有关。网友发现，这些文章标题的第一个字可组成"佰泽安无生存获益"，遂猜测其影射百济神州（SH688235）的PD-1单抗"百泽安"（通用 名：替雷利珠单抗注射液）。此事在业内引发广泛关注。4月24日，"梅斯肿瘤新前沿"发布致歉说明，称争议内容来源于合作方投放素材。 此事表面上看是一段营销层面的偶发插曲，并迅速被企业方低调处理。其背后则是PD-1单抗市场竞争愈发激烈、格局趋于固化之下，企业在存量市场中寻 求突围所映射出的深层焦虑。 青侨阳光基金经理林伟在接受《每日经济新闻》记者采访时表示，在经过行业先发厂商7~8年的跑马圈地之后，PD-(L)1单抗［PD-1单抗药物、PD-L1（程序 性死亡配体1）单抗药物的合称］市场留给后来者建立竞争优势的差异化空间已经越来越小。"我认为行业格局已定，已经进入存量博弈阶段。"林伟表示， 当前的先发企业将主导未来的潜在增长。 但林伟也表示，如果把视野放大到整个肿瘤免疫层面， ...