Oral Omadacycline vs. Placebo in Adults With NTM Pulmonary Disease Caused by Mycobacterium Abscessus Complex (MABc)

A Ph. 2, Double-Blind, Randomized, Parallel-Group, Placebo-Controlled, Multi-Center Study to Evaluate the Efficacy, Safety, & Tolerability of Oral Omadacycline in Adults With NTM Pulmonary Disease Caused by Mycobacterium Abscessus Complex

The purpose of this study is to evaluate the efficacy, safety and tolerability of oral omadacycline as compared to placebo in the treatment of adults with Nontuberculous Mycobacterial (NTM) pulmonary disease caused by Mycobacterium abscessus complex (MABc)

The total duration of subject participation in the study is approximately 5 months which includes a total duration of study treatment for approximately 3 months (84 days). Eligible participants will be randomized 1.5:1 to receive 3 months of treatment with either omadacycline or placebo (monotherapy). The study will use a double-dummy design in order to maintain the study blinding.

Key Inclusion Criteria:

• Has a diagnosis of Nontuberculous Mycobacterial pulmonary disease caused by MABc
• Has at least 2 of the following NTM-infection symptoms present at Screening and Baseline: chronic cough, coughing up blood (hemoptysis), wheezing, chest pain, frequent throat clearing, phlegm or sputum production, shortness of breath, fatigue, fever, night sweats, poor appetite, and/or weight loss.
• At least 1 positive pulmonary (sputum) culture for MABc in the 6 months prior to Screening and 1 positive culture at Screening
• Radiographic evidence of MABc infection via computed tomography (CT) scan of the chest within 3 months prior to Screening
• In the opinion of the investigator, guideline-directed antibiotic therapy for treatment of MABc will not be required within the next 3 months, and a delay, in order for the subject to participate in a placebo-controlled clinical trial, is considered reasonable and clinically acceptable
• Additional inclusion criteria as per protocol

Key Exclusion Criteria:

• Has received antibiotic treatment within 6 months prior to Screening for MABc or MAC
• Has received systemic or inhaled antibiotic therapy (other than chronic macrolide therapy) within 4 weeks prior to Screening
• Has any of the following medical conditions:
• Active pulmonary malignancy, or any type of malignancy requiring chemotherapy or radiation within 1 year prior to Screening
• Active allergic bronchopulmonary mycosis, or any other condition requiring chronic treatment with systemic corticosteroids within 90 days prior to Screening
• Radiologic evidence of cavitary disease
• Known active pulmonary tuberculosis
• Cystic fibrosis
• History of lung transplantation
• Another advanced lung disease with a known percent predicted forced expiratory volume in 1 second < 30%.
• Disseminated or extra-pulmonary NTM disease
• Has been previously treated with omadacycline
• Has a history of hypersensitivity or allergic reaction to tetracyclines
• Additional exclusion criteria as per protocol