Trial Outcomes & Findings for Dose-finding Study to Assess the Efficacy, Safety and Tolerability of Tobramycin Inhalation Powder in Patients With Non-Cystic Fibrosis Bronchiectasis and Pulmonary P. Aeruginosa Infection (NCT NCT02712983)

A total of 107 subjects were enrolled in the trial from 6 countries (Belgium \[2 sites\], France \[4 sites\], Germany \[5 sites\], Italy \[6 sites\], Spain \[8 sites\] and United Kingdom \[9 sites\]).

This study planned to recruit approximately 180 subjects to one of the 3 cohorts in a ratio of 1:1:1. The subjects within each cohort were randomized to blinded TIP or placebo with the following randomization scheme: TIP:TIP/Placebo cyclical:Placebo, in a 2:2:1 ratio.

Dose-finding Study to Assess the Efficacy, Safety and Tolerability of Tobramycin Inhalation Powder in Patients With Non-Cystic Fibrosis Bronchiectasis and Pulmonary P. Aeruginosa Infection

Microbiological data was collected to understand the direct impact of the drug on the pathogens. Sputum samples were cultured for the presence of three Pseudomonas aeruginosa (P. aeruginosa) biotypes measured were mucoid, dry and small colony variant. Change was determined using the formula = (Post-baseline value - baseline value). If no P. aeruginosa was isolated for a visit, log10 colony forming units (CFU) was imputed with log10 (19) for all biotypes. Only values for all morphotypes presented.

Microbiological data was collected to understand the direct impact of the drug on the pathogens. Sputum samples were cultured for the presence of three Pseudomonas aeruginosa (P. aeruginosa) biotypes measured were mucoid, dry and small colony variant. Change was determined using the formula = (Post-baseline value - baseline value). If no P. aeruginosa was isolated for a visit, log10 colony forming units (CFU) was imputed with log10 (19) for all biotypes. Only values for all morphotypes are presented.

The time to first onset of pulmonary exacerbation compared to placebo was analyzed. Participants with pulmonary exacerbation were categorized as: a) Overall, b) Category 1 (Oral): treated with oral antibiotics only and c) Category 2 (Parenteral): treated with parenteral Antibiotics and/or requiring hospitalization. Participants were censored at the time of completion of study or early discontinuation if they did not have a pulmonary exacerbation during the study period.

The duration of pulmonary exacerbation compared to placebo was analyzed. Participants with pulmonary exacerbation were categorized as: a) Overall, b) Category 1 (Oral): treated with oral antibiotics only and c) Category 2 (Parenteral): treated with parenteral Antibiotics and/or requiring hospitalization.

The exposure adjusted rate of pulmonary exacerbation compared to placebo was analyzed. Participants with pulmonary exacerbation were categorized as: a) Overall, b) Category 1 (Oral): treated with oral antibiotics only and c) Category 2 (Parenteral): treated with parenteral Antibiotics and/or requiring hospitalization. The Exposure adjusted rate = (Number of pulmonary exacerbations reported during the study period) / (sum of study duration in days for all participants/ 365.25). Only descriptive analysis performed.

Pulmonary exacerbations are defined as events requiring antibiotic therapy AND for which at least 3 of the following 6 symptoms, signs, or findings were present outside of normal variation: 1. Increased sputum volume, or change in viscosity/consistency or purulence for more than 24 hours; 2. Increased shortness of breath at rest or on exercise for more than 24 hours; 3. Increased cough for more than 24 hours; 4. Fever of ≥38° Celsius within the last 24 hours; 5. Increased malaise/fatigue/lethargy for more than 24 hours; 6. A reduction in forced expiratory volume in the first second of expiration (FEV1) or forced vital capacity (FVC) of least 10% from screening. Participants were categorized as: a) Overall, b) Category 1: treated with oral antibiotics only and c) Category 2: treated with parenteral Antibiotics and/or requiring hospitalization. Only descriptive analysis performed.

The percentage of participants who permanently discontinued study drug due to pulmonary exacerbation compared to placebo was analyzed.

The time to permanent study drug discontinuation due to Pulmonary exacerbation. Participants were censored at the time of last contact if they did not permanently discontinue study drug due to pulmonary exacerbation requiring during the study period. Only descriptive analysis performed.

The time to first use of anti-pseudomonal antibiotics administered compared to placebo was analyzed. Participants were censored at the time of last contact if they did not have anti-pseudomonal antibiotics over the entire study period.

The percentage of participants requiring anti-pseudomonal antibiotics compared to placebo was analyzed. Only descriptive analysis performed.

The total number of days of new anti-pseudomonal antibiotic use compared to placebo was analyzed. Only descriptive analysis

The percentage of participants requiring hospitalization due to serious respiratory-related adverse events (other than those regularly scheduled hospitalization that were planned prior to study start) was analyzed to define severity of pulmonary exacerbations compared to placebo. Only descriptive analysis performed.

The duration of hospitalization due to serious respiratory-related adverse events (other than those regularly scheduled hospitalization that were planned prior to study start) was analyzed to define severity of pulmonary exacerbations compared to placebo. Only descriptive analysis performed.

The number of hospitalization due to serious respiratory-related AEs was analyzed to define severity of pulmonary exacerbations compared to placebo. Respiratory related adverse events were identified using the AEs captured under system organ class 'Respiratory, thoracic and mediastinal disorders' and 'Infections and infestations'.

Time to first hospitalization due to serious respiratory-related AEs was analyzed to define severity of pulmonary exacerbations compared to placebo. Participants were censored at the time of last contact if they did not have a hospitalization due to serious respiratory-related adverse events over the entire study period.

The serum pharmacokinetic (PK) properties of tobramycin were assessed by evaluating tobramycin concentrations in serum collected from the non-cystic fibrosis bronchiectasis population post administration of o.d. or b.i.d. doses of TIP. Serum specimens for PK tobramycin concentration were assessed at Visit 101 (Day 1/start of treatment) 0 to 1 and 1 to 2 hours post-dose and Visit 102 (Day 8) 0 to 1 and 1 to 2 hours post-dose. Prior to protocol amendment #2, PK samples were assessed on Visits 103 (Day 29) rather than Visit 102. Only descriptive analysis performed.

The sputum pharmacokinetic (PK) properties of tobramycin were assessed by evaluating tobramycin concentrations in sputum collected from the non-cystic fibrosis bronchiectasis population post administration of o.d. or b.i.d. doses of TIP. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.

The QoL-B consists of 37 items across 8 domains: Physical Functioning (PF), Role Functioning (RF), Vitality, Emotional Function (EF), Social Functioning (SF), Treatment Burden (TB), Health Perception (HP) and Respiratory Symptoms (RS). Each of the 37 items is scored from 1 to 4, and each of the 8 scale scores is standardized on a 0-100 point scale, with higher scores representing fewer symptoms or better functioning and HRQoL. A total score is not calculated since functioning can vary greatly from one domain to another. Only descriptive analysis performed.