Arcus Biosciences Halts Late-Stage Lung Cancer Trial
Written by Emily J. Thompson, Senior Investment Analyst
Updated: 11 hours ago
0mins
Should l Buy RCUS?
Source: seekingalpha
- Trial Termination Reason: Arcus Biosciences announced the discontinuation of the STAR-121 trial in collaboration with Gilead Sciences due to futility, indicating poor clinical prospects for the anti-TIGIT therapy domvanalimab, which may impact the company's future R&D direction.
- Clinical Trial Details: The STAR-121 trial evaluated domvanalimab combined with chemotherapy and the anti-PD-1 antibody zimberelimab as a first-line treatment for metastatic non-small cell lung cancer, but the Independent Data Monitoring Committee's recommendation led to its early termination, revealing insufficient efficacy of the therapy.
- Other Study Cessation: The company also announced the halt of the Phase 2 EDGE-Lung study, which assessed domvanalimab with various immunotherapies, further indicating significant challenges in its lung cancer research and potentially affecting its market competitiveness.
- Collaboration Rights Change: Arcus disclosed that effective July 14, 2026, Gilead will no longer hold option rights to certain early-stage pipeline projects due to the non-payment of option continuation fees, which may impact Arcus's cash flow and future collaboration opportunities.
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Analyst Views on RCUS
Wall Street analysts forecast RCUS stock price to rise
9 Analyst Rating
6 Buy
3 Hold
0 Sell
Moderate Buy
Current: 24.250
Low
14.00
Averages
27.44
High
44.00
Current: 24.250
Low
14.00
Averages
27.44
High
44.00
About RCUS
Arcus Biosciences, Inc. is a clinical-stage biopharmaceutical company developing differentiated molecules and combination therapies for people with cancer. The Company has a portfolio of investigational products, which are in clinical development with its advanced molecule, an anti-TIGIT antibody targeting lung and gastrointestinal cancers. The Company has approximately seven clinical programs that are focused on targets, including TIGIT, PD-1, adenosine A2a and A2b receptors, CD73, CD39, HIF-2a, and AXL. The Company is engaged in co-developing four investigational products, including zimberelimab (Arcuss anti-PD-1 molecule), domvanalimab (Arcuss anti-TIGIT antibody), etrumadenant (Arcuss adenosine receptor antagonist) and quemliclustat (Arcuss CD73 inhibitor). It is engaged in pursuing a Phase II and Phase III development program for domvanalimab in combination with its anti-PD-1 antibody, zimberelimab, in multiple settings, including lung and gastrointestinal cancer.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
- Trial Termination Reason: Arcus Biosciences announced the discontinuation of the STAR-121 trial in collaboration with Gilead Sciences due to futility, indicating poor clinical prospects for the anti-TIGIT therapy domvanalimab, which may impact the company's future R&D direction.
- Clinical Trial Details: The STAR-121 trial evaluated domvanalimab combined with chemotherapy and the anti-PD-1 antibody zimberelimab as a first-line treatment for metastatic non-small cell lung cancer, but the Independent Data Monitoring Committee's recommendation led to its early termination, revealing insufficient efficacy of the therapy.
- Other Study Cessation: The company also announced the halt of the Phase 2 EDGE-Lung study, which assessed domvanalimab with various immunotherapies, further indicating significant challenges in its lung cancer research and potentially affecting its market competitiveness.
- Collaboration Rights Change: Arcus disclosed that effective July 14, 2026, Gilead will no longer hold option rights to certain early-stage pipeline projects due to the non-payment of option continuation fees, which may impact Arcus's cash flow and future collaboration opportunities.
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ARCUS Biosciences Updates: ARCUS Biosciences is continuing its studies on STAR-121 and Phase 2 Edge-Lung, focusing on advancements in their research and development efforts.
SEC Filing: The company has filed with the SEC, indicating ongoing regulatory compliance and transparency in its operations.
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- Stock Option Grant: Arcus Biosciences has granted one new employee options to purchase 7,850 shares at an exercise price of $22.65, reflecting the company's commitment to attracting talent and its growth potential.
- Restricted Stock Units: The company also awarded the employee 3,950 restricted stock units, aimed at retaining key personnel and enhancing team stability through equity incentives.
- Incentive Plan Context: This grant is made under the company's 2020 Inducement Plan, which was approved in compliance with NYSE rules, demonstrating the company's foresight and compliance in attracting top talent.
- Strategic Development: Arcus Biosciences focuses on developing innovative drugs for cancer and autoimmune diseases, advancing its clinical trials to improve patient survival rates, showcasing its strategic positioning in the biopharmaceutical sector.
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- Stock Option Grant: Arcus Biosciences has granted stock options totaling 7,050 shares to two new employees at an exercise price of $21.41 per share, based on the closing price on March 23, 2026, reflecting the company's commitment to incentivizing new talent.
- Restricted Stock Units: In addition, the company awarded 3,550 shares in restricted stock units, aimed at further attracting and retaining talent, thereby enhancing team stability and execution capabilities.
- Incentive Plan Context: The stock grants are made under the company's 2020 Inducement Plan, approved by the Board of Directors, complying with the NYSE Listed Company Manual Rule 303A.08's
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- Stock Option Grant: Arcus Biosciences has granted stock options totaling 17,050 shares to two new employees at an exercise price of $23.43, reflecting the closing price on March 9, 2026, indicating the company's commitment to incentivizing new talent.
- Restricted Stock Units: In addition, the company awarded 8,550 shares in restricted stock units, further enhancing its long-term incentive mechanisms aimed at attracting and retaining key personnel to support its growth trajectory.
- Inducement Plan Context: The stock grants were made under the company's 2020 Inducement Plan, which was approved in January 2020, aligning with the
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