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Upstream Bio Reports Positive Top-Line Results from the Phase 2 VIBRANT Trial of Verekitug for the Treatment of Chronic Rhinosinusitis with Nasal Polyps (CRSwNP)

Upstream Bio (UPB) | September 2, 2025

By Mike Hernandez

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Upstream Bio announces positive results from the Phase 2 VIBRANT trial evaluating Verekitug for CRSwNP treatment.

Verekitug demonstrated statistically significant and clinically meaningful reductions in nasal polyp score and congestion.

The trial showed improvements in key secondary endpoints and a generally well-tolerated safety profile.

Positive Results

VIBRANT trial of Verekitug showed significant reductions in nasal polyp score and congestion, meeting primary and key secondary endpoints.

Safety Profile

Verekitug demonstrated a well-tolerated safety profile with no serious adverse events observed.

Clinical Potential

Verekitug's potent targeting of the TSLP receptor may offer distinct clinical benefits in CRSwNP treatment.

  • The Phase 2 VIBRANT trial highlights Verekitug's potential to advance the standard of care in CRSwNP treatment.
  • Results suggest Verekitug's clinical effect and extended dosing could address unmet needs in respiratory diseases like severe asthma.

The positive results from the VIBRANT trial position Verekitug as a promising treatment option for CRSwNP, with the potential to impact the standard of care in respiratory diseases.