Upstream Bio Conference Call Summary Company Overview - Company: Upstream Bio (NasdaqGS:UPB) - Event: First annual I&I Summit - Date: November 12, 2025 Key Industry Insights Drug Development and Efficacy - Upstream Bio presented positive Phase 2 data for verekitug, an antibody targeting the TSLP receptor, showing long pharmacodynamic activity with a dosing schedule of Q12 weeks [3][5][6] - The drug demonstrated a 76% reduction in systemic corticosteroid use and surgery needs in patients with chronic rhinosinusitis with nasal polyps (CRSwNP) [9][10] - The data indicated that there was no plateau in efficacy at 24 weeks, suggesting potential for continued improvement in longer studies [4][8] Clinical Trial Progression - Upstream Bio is advancing towards Phase 3 trials for both CRSwNP and severe asthma, with plans to analyze data from both indications contemporaneously to inform dose selection [11][12] - The company aims to initiate Phase 3 programs as quickly as possible, contingent on data analysis and regulatory feedback [31] Competitive Landscape - Upstream Bio differentiates itself from competitors by targeting the TSLP receptor rather than the ligand, which is the approach taken by other companies [34][35] - The competitive landscape includes drugs from GSK and ILOS, which are reportedly behind Upstream Bio in development timelines [32][34] Additional Important Points Pharmacodynamics and Dosing - The pharmacodynamic profile of verekitug suggests that it maintains receptor occupancy for up to 24 weeks after the last dose, which is critical for sustained efficacy [24][22] - The company is exploring the potential for extended dosing intervals (Q24 weeks) while ensuring that efficacy is not compromised [17][22] Regulatory Considerations - Upstream Bio is focused on obtaining robust data to support regulatory negotiations, with a primary endpoint of asthma exacerbation reduction set at 50% or greater [26][28] - The company is preparing for potential discussions with regulators regarding the design of future trials, including considerations for secondary endpoints like lung function improvement [30][31] Future Data Releases - Upcoming data from the Phase 2 trials is expected in Q1, with plans to present findings at major medical meetings such as QuadAI and ATS in the first half of the following year [38] This summary encapsulates the critical insights and developments discussed during the Upstream Bio conference call, highlighting the company's strategic direction and competitive positioning within the biotech industry.
Upstream Bio (NasdaqGS:UPB) Conference Transcript