Bellerophon, FDA Agree on INOpulse Approval Pathway
Bellerophon Therapeutics and FDA have reached agreement on the regulatory approval pathway for INOpulse, a proprietary pulsatile nitric oxide delivery system for patients with pulmonary hypertension associated with interstitial lung disease (PH-ILD). Based on recent data and INOpulse’s safety profile, Bellerophon says FDA agreed that it can measure moderate to vigorous physical activity (MVPA) as the primary endpoint in its planned pivotal Phase 3 study. MVPA will be measured by a medical wearable continuous activity monitor (actigraphy), the company says. In addition, the agency agreed with the company’s proposal that a Phase 2b study be amended to a Phase 2/3 trial. “This agreement allows a seamless transition into Cohort 3 of iNO-PF, which will serve as the pivotal Phase 3 trial,” the company says.
In January, Bellerophon reported positive results from Cohort 1 of its ongoing Phase 2b iNO-PF trial. “Subjects on active treatment demonstrated a statistically significant improvement of 34% in MVPA as compared to subjects on placebo, as well as improvements in overall activity, oxygen saturation and additional functional measures,” the company says. “Compared to surrogate endpoints, such as six-minute walk distance or patient reported outcomes, change in MVPA provides a direct and continuous measure of physical activity in PH-ILD patients, who have limited ability to perform even the most basic daily tasks.”