Tuesday, January 13, 2026

GSK’s Depemokimab Shows Promise for Treating Chronic Rhinosinusitis with Nasal Polyps (CRSwNP) in Phase III ANCHOR Trials

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Key Takeaways

  • GSK’s depemokimab, administered biannually, demonstrated significant reduction in nasal polyp size and nasal obstruction in patients with chronic rhinosinusitis with nasal polyps (CRSwNP).
  • The trials revealed a well-tolerated safety profile comparable to placebo, providing a new potential treatment option for millions affected by CRSwNP.
  • Depemokimab, a long-acting biologic targeting interleukin-5 (IL-5), offers extended dosing intervals, which may enhance adherence and reduce clinic visits.

GSK (GlaxoSmithKline) has announced promising results from its Phase III ANCHOR trials, investigating the efficacy of depemokimabin patients with chronic rhinosinusitis with nasal polyps (CRSwNP). This condition affects millions worldwide, significantly impairing quality of life due to nasal obstruction and polyp growth. Depemokimab, an innovative biologic therapy administered biannually, has shown substantial improvements in reducing nasal polyp size and improving nasal obstruction, positioning itself as a potential breakthrough treatment for CRSwNP.

The ANCHOR-1 and ANCHOR-2 trials, which compared depemokimab to placebo, successfully met their primary endpoints. Over the course of 52 weeks, patients receiving depemokimab experienced a significant reduction in nasal polyp size and improved nasal obstruction scores. These findings reflect a positive impact on the symptoms most troublesome to those living with CRSwNP. Notably, depemokimab’s safety profile was comparable to that of the placebo, suggesting it is a well-tolerated treatment option. These results will be discussed in further detail at upcoming scientific conferences.

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Depemokimab: An Innovative Approach to CRSwNP Treatment

Depemokimab is a cutting-edge ultra-long-acting biologic with high affinity for interleukin-5 (IL-5), a cytokine closely linked to the type 2 inflammation that drives nasal polyp formation. With its extended half-life, depemokimab only requires dosing twice per year, a major advantage for both patients and healthcare providers. This dosing schedule has the potential to reduce the burden of frequent clinic visits, improving treatment adherence and providing more sustained symptom control.

The findings from the ANCHOR trials could represent a major step forward in the management of CRSwNP, particularly for those with type 2 inflammation. Key benefits include Significant reduction in nasal polyp size and improved nasal obstruction, Long-acting therapy with twice-yearly dosing could reduce the frequency of clinic visits, easing the burden on healthcare systems and enhancing patient satisfaction. The therapy’s positive safety profile, comparable to placebo, provides an encouraging risk-benefit balance, Regulatory filings are expected to follow worldwide based on the full analysis of the trial data.

CRSwNP Rhinosinusitis

Broader Implications for CRSwNP Treatment

CRSwNP is a chronic, often severe condition that can lead to recurrent infections, sleep disturbances, and impaired daily functioning. Current treatments often require frequent interventions, making adherence difficult for many patients. GSK’s depemokimab, with its extended dosing schedule, could transform treatment for patients, offering sustained relief from symptoms while reducing the need for regular medical visits. As GSK moves forward with regulatory filings based on these positive results, the medical community is hopeful that depemokimab could provide a new standard of care for CRSwNP patients.

These advancements in CRSwNP management could lead to improved patient outcomes, better quality of life, and more efficient use of healthcare resources, making it a significant development in the field of respiratory and inflammatory diseases. Stakeholders, including healthcare professionals and patients, eagerly await further progress in making this therapy widely available.

 

Source: GlaxoSmithKline, October 14, 2024

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