Citigroup maintains a "Buy" rating for Arcus Biosciences, Inc. (NYSE:RCUS) despite adjusting its price target from $56 to $44 following the discontinuation of the Phase 3 STAR-221 study.The STAR-221 study's discontinuation, due to lack of improved overall survival rates in cancer treatment, has led to a significant stock price decline of approximately 14.38%.Arcus Biosciences continues its research and development efforts, focusing on its inflammation and immunology portfolio despite recent setbacks.Arcus B ...

Arcus Biosciences, Inc. (NYSE:RCUS) on Friday announced the discontinuation of the Phase 3 STAR-221 study, being conducted in partnership with Gilead Sciences, Inc. (NASDAQ:GILD) , due to futility. • Arcus Biosciences stock is among today’s weakest performers. Why is RCUS stock dropping?The decision is based on the recommendation from the Independent Data Monitoring Committee (IDMC) following its review of data from an event-driven, pre-specified interim analysis of overall survival (OS).STAR-221 evaluated ...

Business Highlights - OmniAb has 104 active partners as of September 30, 2025 [13] - The company has 399 active programs as of September 30, 2025, a net addition of 36 programs year-to-date [16, 18] - There are 32 active clinical programs and approved products as of September 30, 2025 [26] - OmniAb is launching OmniUltra in December, a new technology for antibody and peptide therapeutics discovery [11, 41] Financial Performance - Q3 2025 total revenue was $22 million, compared to $42 million in Q3 2024 [65] - License and milestone revenue decreased to $06 million in Q3 2025 from $14 million in Q3 2024 [65] - Service revenue decreased to $12 million in Q3 2025 from $25 million in Q3 2024 [65] - Royalty revenue increased to $04 million in Q3 2025 from $03 million in Q3 2024 [65] - Research and Development expenses decreased to $104 million in Q3 2025 from $133 million in Q3 2024 [65] - Net loss was ($165) million in Q3 2025, compared to ($164) million in Q3 2024 [65] Financial Guidance - The company expects 2025 revenue to be in the range of $18 to $22 million [67] - The company expects 2025 operating expense to be in the range of $82 to $86 million [67]

Core Insights - Arcus Biosciences Inc. announced the first overall survival results from Arm A1 of the Phase 2 EDGE-Gastric study for patients with advanced gastric cancer [1] - The study evaluates the safety and efficacy of domvanalimab plus zimberelimab and chemotherapy [1][2] Study Details - The Phase 2 EDGE-Gastric study is a multi-arm global trial conducted in partnership with Gilead Sciences Inc. [2] - Patients in Arm A1 received a regimen of domvanalimab (1600mg IV every four weeks), zimberelimab (480mg IV every four weeks), and FOLFOX chemotherapy every two weeks [3] - The cohort demonstrated a median overall survival of 26.7 months [3] Efficacy Results - The study reported a confirmed overall response rate of 59% and a median progression-free survival of 12.9 months [4] - Richard Markus, chief medical officer of Arcus, emphasized the differentiated efficacy and safety of the anti-TIGIT-based combinations [4] Safety Profile - No unexpected safety signals were observed, and the treatment regimen was generally well tolerated [5] Market Reaction - Following the announcement, Arcus Biosciences' stock increased by 6.58%, reaching $15.56 [5]

Summary of Arcus Biosciences Investor Event - October 2025 Company Overview - **Company**: Arcus Biosciences - **Focus**: Development of innovative cancer therapies, particularly in renal cell carcinoma (RCC) and immunology - **Key Programs**: Castadafen (HIF2 inhibitor), domvanalimab (anti-TIGIT), quemliclustat (CD73 inhibitor) - **Financial Position**: Over $900 million in funding to support late-stage programs and clinical trials [7][8][14] Key Points on Castadafen - **Priority Program**: Castadafen is the highest priority program due to its scientific, clinical, and commercial validation [3][4] - **Market Potential**: The clear cell RCC market opportunity is estimated at approximately $5 billion, with additional potential in other cancers leading to a total market exceeding $10 billion [15][18] - **Clinical Data**: - Castadafen shows approximately twice the progression-free survival (PFS) compared to belzutifan, with a 50% lower rate of primary progression [17][43] - Confirmed overall response rate (ORR) for castadafen is 35%, compared to 22% for belzutifan [32][43] - Median PFS for castadafen is projected to exceed 12 months, with 60% of patients remaining progression-free at 12 months [40][41] - **Safety Profile**: Castadafen has a comparable safety profile to belzutifan, with serious adverse events (SAEs) at 31% and treatment-related SAEs at 6% [43][44] Other Programs - **Domvanalimab**: Focused on upper GI cancers, with an oral presentation at ESMO expected to provide overall survival data [5][6] - **Quemliclustat**: CD73 inhibitor showing unprecedented overall survival of 16.4 months in combination with gemcitabine/nab-paclitaxel [6][14] Clinical Trials and Collaborations - **PEAK-1 Study**: Ongoing phase 3 study for castadafen in frontline clear cell RCC, with strong enrollment expected due to investigator enthusiasm [12][14] - **Collaboration with AstraZeneca**: Cost-sharing arrangement while maintaining 100% commercial rights to castadafen [13][14] - **Taiho Collaboration**: Potential decision from Taiho regarding participation in the castadafen program [13] Market Competition - **Competitive Landscape**: Competing against major players like Merck and Roche, with a focus on addressing significant medical needs in large markets [14][15] - **Strategic Positioning**: Arcus aims to leverage its well-funded status and strong data to capture market share in the competitive landscape of RCC treatments [14][15] Insights from Key Opinion Leaders - **Dr. Raina McKay**: Emphasized the need for improved treatment options in RCC, highlighting the limitations of current therapies like belzutifan [48][52] - **Patient Journey**: Discussed the typical RCC patient journey and the importance of long-term treatment strategies [49][50] Conclusion - **Future Outlook**: Arcus Biosciences is well-positioned to capitalize on its innovative therapies, particularly castadafen, with strong clinical data and a robust financial foundation to support ongoing and future studies [7][8][15]