
OHTUVAYRE TRIALS EVALUATED
Lung function, safety, and health-related quality of life
Study design
The ENHANCE studies were pivotal phase 3 trials that enrolled a broad population of symptomatic adult patients with moderate to severe COPD1
aN, number of all enrolled patients.
bn, number of patients who received at least one dose of study drug and had non-missing FEV1 value.
Safety of OHTUVAYRE was based on the pooled safety population for 24 weeks in ENHANCE-1 and ENHANCE-2 and on a 48-week cohort (OHTUVAYRE, n=280; placebo, n=89) in ENHANCE-1.
Overview
The ENHANCE Trials were designed to evaluate the efficacy and safety of OHTUVAYRE in patients with moderate to severe COPD in two 24-week randomized, double-blind, placebo-controlled, parallel-group clinical studies. After a 28-day run-in to ensure stable background medication use, a total of 1553 adults (763 in ENHANCE-1, 790 in ENHANCE-2) were randomized 5:3 to receive 3 mg of OHTUVAYRE or placebo twice daily administered by oral inhalation via standard jet nebulizer.1
ENHANCE-1
ENHANCE-2
Patients were allowed to remain in the trials after treatment discontinuation.1
cSelected inclusion/exclusion criteria.
BID, twice daily; COPD, chronic obstructive pulmonary disease; ENHANCE, Ensifentrine as a Novel inHAled Nebulized COPD thErapy; FEV1, forced expiratory volume in one second; FVC, forced vital capacity; ICS, inhaled corticosteroids; LABA, long-acting beta2-agonist; LAMA, long-acting muscarinic antagonist; mMRC, modified Medical Research Council dyspnea scale; R, randomization.
Patients1
Selected eligibility criteriac:
- COPD diagnosis: FEV1/FVC<0.71
- Post-bronchodilator FEV1 30-70% predicted normal1
- mMRC dyspnea scale score ≥21
- Current smoker or smoking history (≥10 pack-years)1
- No asthma diagnosis1
- No exacerbation requiring oral or parenteral steroids in the 3 months prior to screening1,2
Selected baseline characteristics:
- Approximately 62% of patients were on maintenance background therapy, which primarily included LAMA, LABA, or LABA + ICS1
- ~38% weren’t currently on concomitant maintenance COPD therapy1
- In the ENHANCE-1 and ENHANCE-2 trials, 25% and 21% of patients, respectively, reported exacerbations of COPD within the 15 months prior to the studies
Primary endpoint
Change from baseline in FEV1 AUC0-12h at Week 12a
Significantly improved lung function as demonstrated by average FEV1 AUC0-12h
aAverage FEV1 AUC0-12h is defined as the AUC over 12 hours of the FEV1, divided by 12 hours.1
bn, number of patients who received at least one dose of study drug and had non-missing baseline FEV1 value.
AUC, area under the curve; ENHANCE, Ensifentrlne as a Novel inHAled Nebulized COPD thErapy; FEV1, forced expiratory volume in one second; mL, milliliter.
Learn about the delivery system of OHTUVAYRE.
Take a look at the safety profile of OHTUVAYRE.
References
- Anzueto A, Barjaktarevic IZ, Siler TM, et al. Ensifentrine, a novel phosphodiesterase 3 and 4 inhibitor for the treatment of chronic obstructive pulmonary disease: randomized, double-blind, placebo-controlled, multicenter phase III trials (the ENHANCE trials). Am J Respir Crit Care Med. 2023;208(4):406-416. doi:10.1164/rccm.202306-0944OC
- Identifier: NCT04542057. A phase 3 trial to evaluate the safety and efficacy of ensifentrine in patients with COPD. ClinicalTrials.gov. Last update posted October 16, 2023. Accessed April 27, 2026. https://clinicaltrials.gov/study/NCT004542057