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1.
ERJ Open Res ; 9(3)2023 Jul.
Article in English | MEDLINE | ID: mdl-37143828

ABSTRACT

Brensocatib is a novel anti-inflammatory therapy in development for bronchiectasis treatment. Phase 2 WILLOW trial data demonstrate a low number needed to treat and negative number needed to harm, suggesting a favourable benefit-risk profile. https://bit.ly/3SbisW3.

2.
Ann Allergy Asthma Immunol ; 128(2): 169-177, 2022 02.
Article in English | MEDLINE | ID: mdl-34699967

ABSTRACT

BACKGROUND: PT027 is a fixed-dose combination of albuterol (salbutamol) and budesonide in a single pressurized metered-dose inhaler. OBJECTIVE: To evaluate the efficacy and safety of albuterol/budesonide compared with placebo in patients with asthma and exercise-induced bronchoconstriction (EIB). METHODS: In this randomized, double-blind, 2-period, single-dose crossover study, adolescents and adults with asthma and EIB (defined by ≥20% decrease from pre-exercise challenge forced expiratory volume in 1 second [FEV1]) were randomized to albuterol/budesonide (180/160 µg) followed by placebo (n = 29) or the reverse sequence (n = 31). Subjects were stratified by background therapy (as-needed short-acting ß2-agonist alone or low-to-medium dose inhaled corticosteroid plus as-needed short-acting ß2-agonist). FEV1 was measured 5 minutes pre-dose, 30 minutes postdose (5 minutes pre-exercise challenge [baseline]), and 5, 10, 15, 30, and 60 minutes postexercise. The primary end point was maximum percentage fall from baseline in FEV1 up to 60 minutes postexercise challenge. RESULTS: Least squares mean maximum percentage fall in FEV1 up to 60 minutes postexercise challenge was 5.45% with albuterol/budesonide vs 18.97% with placebo (difference, -13.51% [95% confidence interval, -16.94% to -10.09%]; P < .001). More subjects were fully protected (maximum percentage fall in FEV1 post-exercise challenge < 10%) with albuterol/budesonide than with placebo (78.3% vs 28.3%; P < .001). The treatment effect was consistent irrespective of background inhaled corticosteroid therapy, and albuterol/budesonide was well tolerated. CONCLUSION: In adolescents and adults with asthma and EIB, a single dose of albuterol/budesonide 180/160 µg taken approximately 30 minutes before exercise was significantly more effective than placebo in preventing EIB. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04234464.


Subject(s)
Albuterol , Asthma , Administration, Inhalation , Adolescent , Adult , Asthma/chemically induced , Asthma/drug therapy , Bronchoconstriction , Bronchodilator Agents , Budesonide/therapeutic use , Cross-Over Studies , Double-Blind Method , Forced Expiratory Volume , Humans
3.
J Asthma ; 59(7): 1420-1432, 2022 07.
Article in English | MEDLINE | ID: mdl-34338132

ABSTRACT

OBJECTIVE: To evaluate the efficacy and safety of three doses of glycopyrrolate metered dose inhaler (GP MDI) in patients with uncontrolled asthma despite treatment with inhaled corticosteroid/long-acting ß2-agonists (ICS/LABA) with or without tiotropium, to characterize the benefit of triple therapy. METHOD: This phase II/III, double-blind study randomized patients to 24 weeks' treatment with twice-daily GP MDI 36 µg, 18 µg, 9 µg, or placebo MDI (all delivered via Aerosphere inhalers), or once-daily open-label tiotropium 2.5 µg. Patients continued their own ICS/LABA regimen throughout the study. The primary endpoint was change from baseline in forced expiratory volume in 1 s (FEV1) area under the curve from 0 - 4 h (AUC0 - 4) at Week 24. Secondary endpoints included patient questionnaires to measure asthma control or symptoms. Safety was also assessed. RESULTS: The primary analysis (modified intent-to-treat) population included 1066 patients. The primary study endpoint was not met (changes from baseline in FEV1 AUC0 - 4 at Week 24 were 294 mL, 284 mL, 308 mL, 240 mL, and 347 mL for GP MDI 36 µg, GP MDI 18 µg, GP MDI 9 µg, placebo, and open-label tiotropium, respectively). There were no significant differences between treatment and placebo in secondary endpoints at Week 24. Post-hoc analyses using post-bronchodilator FEV1 as the baseline measurement, or averaging values across multiple baseline visits, showed a dose-related response to GP MDI. The incidence of adverse events was low and similar across treatments. CONCLUSION: Although this study did not meet its primary endpoint, post hoc analyses identified a dose-related response to GP MDI when alternative definitions of baseline FEV1 were used in the analyses.


Subject(s)
Asthma , Pulmonary Disease, Chronic Obstructive , Administration, Inhalation , Asthma/chemically induced , Asthma/drug therapy , Bronchodilator Agents/adverse effects , Cross-Over Studies , Double-Blind Method , Forced Expiratory Volume , Formoterol Fumarate/therapeutic use , Glycopyrrolate/adverse effects , Humans , Metered Dose Inhalers , Muscarinic Antagonists/adverse effects , Pulmonary Disease, Chronic Obstructive/diagnosis , Tiotropium Bromide/adverse effects , Treatment Outcome
4.
Clin Drug Investig ; 41(6): 579-590, 2021 Jun.
Article in English | MEDLINE | ID: mdl-34089147

ABSTRACT

BACKGROUND AND OBJECTIVES: Co-suspension Delivery™ Technology has been developed for the administration of albuterol sulfate pressurised inhalation suspension via metered-dose inhaler (AS MDI, PT007). We assessed the efficacy and safety of AS MDI versus Proventil® in order to determine the optimal dose of AS MDI to take to Phase III clinical trials. METHODS: ASPEN (NCT03371459) and ANTORA (NCT03364608) were Phase II, randomised, crossover, multicentre studies of AS MDI versus Proventil® in patients with persistent asthma. In ASPEN, 46 patients received cumulative-dose treatments (90 µg/inhalation using 1 + 1 + 2 + 4 + 8 inhalations at 30-minute intervals) in 1 of 2 possible sequences: AS MDI/Proventil or Proventil/AS MDI. In ANTORA, 86 patients were randomised to one of 10 treatment sequences of AS MDI (90 µg or 180 µg), placebo MDI, or Proventil (90 µg or 180 µg). The primary endpoints were baseline-adjusted forced expiratory volume in 1 second (FEV1) 30 minutes after each cumulative dose (ASPEN) and change from baseline in FEV1 area under the curve from 0 to 6 h (ANTORA). Safety was assessed in both studies. RESULTS: In ASPEN, AS MDI was equivalent to Proventil (within pre-specified bounds of ± 200 mL) following cumulative doses of albuterol up to 1440 µg for the primary endpoint. In ANTORA, 90 µg and 180 µg doses of AS MDI and Proventil were significantly superior to placebo MDI (p < 0.0001), and AS MDI was non-inferior to Proventil at both doses, based on a margin of 100 mL. No new safety concerns were identified. CONCLUSION: The effects of albuterol delivered via AS MDI and Proventil on bronchodilation were equivalent, supporting the selection of AS MDI 180 µg to be taken into Phase III clinical trials, either alone or in combination with an inhaled corticosteroid. TRIAL REGISTRATION NUMBER: ASPEN (NCT03371459); Date of registration: 29/12/2017. ANTORA (NCT03364608); Date of registration: 15/12/2017.


Subject(s)
Albuterol/administration & dosage , Asthma/drug therapy , Bronchodilator Agents/administration & dosage , Administration, Inhalation , Adult , Albuterol/therapeutic use , Cross-Over Studies , Female , Forced Expiratory Volume/drug effects , Humans , Male , Metered Dose Inhalers , Middle Aged , Severity of Illness Index , Young Adult
5.
Respir Investig ; 59(1): 135-144, 2021 Jan.
Article in English | MEDLINE | ID: mdl-32917556

ABSTRACT

BACKGROUND: PINNACLE-4 evaluated the efficacy and safety of the long-acting muscarinic antagonist/long-acting ß2-agonist fixed-dose combination glycopyrrolate/formoterol fumarate metered dose inhaler (GFF MDI) in patients from Asia, Europe, and the USA with moderate-to-very severe chronic obstructive pulmonary disease (COPD). This pre-specified analysis included Japanese patients in PINNACLE-4. METHODS: In this double-blind randomized study (NCT02343458), patients received GFF MDI (18/9.6 µg), glycopyrrolate (GP) MDI (18 µg), formoterol fumarate (FF) MDI (9.6 µg), or placebo MDI twice daily for 24 weeks. The primary endpoint was change from baseline in morning pre-dose trough forced expiratory volume in 1 s (FEV1) over Weeks 12-24. Secondary lung function endpoints, patient-reported outcomes, and safety were assessed. The Japanese subpopulation (n = 150) analyses were exploratory. RESULTS: GFF MDI improved change from baseline in morning pre-dose trough FEV1 over Weeks 12-24 versus GP MDI, FF MDI, and placebo MDI (least squares mean [LSM] differences [95% confidence interval]: 69 [8-131], 60 [-1 to 121], and 275 [180-370] mL, respectively). GFF MDI numerically improved Transition Dyspnea Index focal score and change from baseline in St George's Respiratory Questionnaire total score versus placebo MDI (LSM differences 0.19 and -3.78, respectively). Treatment-related adverse events occurred in ≤4.5% of patients in any treatment group. CONCLUSIONS: GFF MDI improved lung function versus monocomponents and placebo MDI in the Japan subpopulation of PINNACLE-4. The efficacy and safety results were generally consistent with those of the global study population, supporting the use of GFF MDI in Japanese patients with moderate-to-very severe COPD.


Subject(s)
Drug Delivery Systems/methods , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adult , Aged , Aged, 80 and over , Asian People , Delayed-Action Preparations , Double-Blind Method , Female , Humans , Male , Metered Dose Inhalers , Middle Aged , Safety , Severity of Illness Index , Suspensions , Treatment Outcome
6.
Article in English | MEDLINE | ID: mdl-32021143

ABSTRACT

Background: Glycopyrrolate/formoterol fumarate metered dose inhaler (GFF MDI) is a long-acting muscarinic antagonist/long-acting ß2-agonist fixed-dose combination therapy delivered by MDI, formulated using innovative co-suspension delivery technology. The PINNACLE-4 study evaluated the efficacy and safety of GFF MDI in patients with moderate-to-very severe chronic obstructive pulmonary disease (COPD) from Asia, Europe, and the USA. This article presents the results from the China subpopulation of PINNACLE-4. Methods: In this randomized, double-blind, placebo-controlled, parallel-group Phase III study (NCT02343458), patients received GFF MDI 18/9.6 µg, glycopyrrolate (GP) MDI 18 µg, formoterol fumarate (FF) MDI 9.6 µg, or placebo MDI (all twice daily) for 24 weeks. The primary endpoint was change from baseline in morning pre-dose trough forced expiratory volume in 1 second at Week 24. Secondary lung function endpoints and patient-reported outcome measures were also assessed. Safety was monitored throughout the study. Results: Overall, 466 patients from China were included in the intent-to-treat population (mean age 63.6 years, 95.7% male). Treatment with GFF MDI improved the primary endpoint compared to GP MDI, FF MDI, and placebo MDI (least squares mean differences: 98, 104, and 173 mL, respectively; all P≤0.0001). GFF MDI also improved daily total symptom scores and time to first clinically important deterioration versus monocomponents and placebo MDI, and Transition Dyspnea Index focal score versus placebo MDI. Rates of treatment-emergent adverse events were similar across the active treatment groups and slightly higher in the placebo MDI group. Conclusion: GFF MDI improved lung function and daily symptoms versus monocomponents and placebo MDI and improved dyspnea versus placebo MDI. All treatments were well tolerated with no unexpected safety findings. Efficacy and safety results were generally consistent with the global PINNACLE-4 population, supporting the use of GFF MDI in patients with COPD from China.


Subject(s)
Adrenergic beta-2 Receptor Agonists/therapeutic use , Formoterol Fumarate/therapeutic use , Glycopyrrolate/therapeutic use , Lung/drug effects , Metered Dose Inhalers , Muscarinic Antagonists/therapeutic use , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adrenergic beta-2 Receptor Agonists/administration & dosage , Adrenergic beta-2 Receptor Agonists/adverse effects , Aged , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/adverse effects , China , Double-Blind Method , Drug Combinations , Female , Forced Expiratory Volume , Formoterol Fumarate/administration & dosage , Formoterol Fumarate/adverse effects , Glycopyrrolate/adverse effects , Humans , Lung/physiopathology , Male , Middle Aged , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/adverse effects , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/physiopathology , Recovery of Function , Severity of Illness Index , Time Factors , Treatment Outcome
7.
Clin Pharmacol Drug Dev ; 8(2): 223-233, 2019 02.
Article in English | MEDLINE | ID: mdl-29901860

ABSTRACT

This randomized, phase 1, single-dose, crossover study (NCT02189304) compared the 12-hour pharmacokinetic (PK) and safety profiles of budesonide/glycopyrronium/formoterol fumarate dihydrate metered dose inhaler (BGF MDI) 320/14.4/10 µg and budesonide/formoterol fumarate dihydrate (BFF) MDI 320/10 µg (both formulated using innovative co-suspension delivery technology) to an active comparator (budesonide/formoterol fumarate dihydrate dry powder inhaler [BUD/FORM DPI] 320/9-µg delivered dose) in healthy adults. The potential for PK interaction between glycopyrronium and budesonide/formoterol within BGF MDI was assessed. Of 72 subjects randomized, 59 completed treatment. Systemic budesonide exposure (primary objective) based on area under the plasma drug concentration-time curve 0-12 hours (AUC0-12 ; % coefficient of variation) was 1598.38 (49.7), 1657.09 (50.4), and 1276.75 (70.4) pg·h/mL for BGF MDI, BFF MDI, and BUD/FORM DPI, respectively; and formoterol exposure (AUC0-12 [% coefficient of variation]) was 39.16 (45.9), 39.53 (40.5), and 23.24 (59.2) pg·h/mL, respectively. BGF MDI and BFF MDI were bioequivalent for budesonide and formoterol. All treatments were well tolerated. While systemic exposure to budesonide and formoterol was higher for BGF MDI and BFF MDI than for BUD/FORM DPI, there were no appreciable differences in the incidence of pharmacologically predictable adverse events. This, coupled with the absence of PK interactions, suggests the BGF MDI safety profile will be comparable to BUD/FORM DPI.


Subject(s)
Budesonide/pharmacokinetics , Formoterol Fumarate/pharmacokinetics , Glycopyrrolate/pharmacokinetics , Administration, Inhalation , Adult , Area Under Curve , Budesonide/administration & dosage , Cross-Over Studies , Double-Blind Method , Drug Administration Schedule , Drug Combinations , Drug Interactions , Female , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Humans , Male , Metered Dose Inhalers , Middle Aged , Therapeutic Equivalency , Young Adult
8.
J Aerosol Med Pulm Drug Deliv ; 32(1): 40-46, 2019 02.
Article in English | MEDLINE | ID: mdl-30335559

ABSTRACT

BACKGROUND: GFF MDI is a glycopyrrolate/formoterol fumarate fixed-dose combination metered dose inhaler formulated using co-suspension delivery technology. This open-label, single-arm multicenter study (NCT02268396) evaluated the accuracy, reliability, and functionality of the GFF MDI AeroCount® dose indicator when used by patients with chronic obstructive pulmonary disease (COPD). PATIENTS AND METHODS: The study enrolled subjects (40-80 years of age) with an established clinical history (≥6 months) of COPD, who completed an electronic diary twice daily to record study-drug administration time, the number of actuations used, and pre- and post-dose dose indicator readings. The primary endpoint was the percentage of devices for which the number of subject-reported actuations was consistent (±20 actuations) with the dose indicator-based actuation count (equal to 130 minus the dose indicator reading) at the end of the treatment period (4 weeks). Safety was monitored throughout the study. RESULTS: A total of 138 subjects with moderate-to-very severe COPD (50.7% male; mean [standard deviation (SD)] age 62.1 [8.3] years) were enrolled and treated. Subject-reported actuation count and dose indicator-based actuation counts were consistent for 96.4% (132/137) of devices at the end of the treatment period (4 weeks) in the intent-to-treat (ITT) population and for all devices in the per-protocol (PP) population. The mean (SD) dose indicator-based actuation and subject-reported actuation counts in the ITT population (n = 137) were 113.4 (18.9) and 117.0 (19.0), respectively, with a mean (SD) difference of 3.6 (7.9). The mean (SD) dose indicator-based actuation and subject-reported actuation counts in the PP population (n = 112) were 116.8 (8.7) and 119.7 (8.1), respectively. There were no unexpected safety findings. CONCLUSIONS: This study supported the accuracy, reliability, and utility of the dose indicator integrated into the GFF MDI device when used by patients with COPD.


Subject(s)
Adrenergic beta-2 Receptor Agonists/administration & dosage , Bronchodilator Agents/administration & dosage , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Lung/drug effects , Metered Dose Inhalers , Muscarinic Antagonists/administration & dosage , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adrenergic beta-2 Receptor Agonists/adverse effects , Adult , Aged , Aged, 80 and over , Bronchodilator Agents/adverse effects , Drug Combinations , Equipment Design , Female , Formoterol Fumarate/adverse effects , Glycopyrrolate/adverse effects , Humans , Lung/physiopathology , Male , Middle Aged , Muscarinic Antagonists/adverse effects , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/physiopathology , Severity of Illness Index , Treatment Outcome , United States
9.
Int J Chron Obstruct Pulmon Dis ; 13: 2969-2984, 2018.
Article in English | MEDLINE | ID: mdl-30310273

ABSTRACT

BACKGROUND: COPD is a major global cause of mortality and morbidity. PINNACLE-4 evaluated the efficacy and safety of GFF MDI (glycopyrrolate/formoterol fumarate metered dose inhaler) in patients from Asia, Europe, and the USA with moderate-to-very severe COPD. METHODS: In this double-blind, placebo-controlled, Phase III study, patients were randomized to treatment with GFF MDI 18/9.6 µg, glycopyrrolate (GP) MDI 18 µg, formoterol fumarate (FF) MDI 9.6 µg, or placebo MDI (all twice daily) for 24 weeks. Lung function, patient-reported outcomes (symptoms and health-related quality of life), and safety were assessed. RESULTS: Of the 1,756 patients randomized, 1,740 patients were included in the intent-to-treat population (mean age 64.2 years, 74.1% male, and 40.2% Asian). GFF MDI significantly improved morning predose trough FEV1 at Week 24 (primary endpoint) vs placebo MDI, GP MDI, and FF MDI (least squares mean differences: 165, 59, and 72 mL, respectively; all P<0.0001). GFF MDI also significantly improved other lung function endpoints vs placebo MDI, GP MDI, and FF MDI and patient-reported outcomes vs placebo MDI and GP MDI. A larger proportion of patients treated with GFF MDI achieved the minimum clinically important difference in Transition Dyspnea Index score vs GP MDI and placebo MDI and in St George's Respiratory Questionnaire score vs placebo MDI. Adverse event rates were similar across treatment groups. CONCLUSION: These results demonstrated the efficacy of GFF MDI in patients with moderate-to-very severe COPD. GFF MDI was well tolerated, with a safety profile commensurate with long-acting bronchodilators.


Subject(s)
Bronchodilator Agents/administration & dosage , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Metered Dose Inhalers , Patient Reported Outcome Measures , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adult , Aged , Aged, 80 and over , Asia , Dose-Response Relationship, Drug , Double-Blind Method , Drug Administration Schedule , Drug Therapy, Combination , Europe , Female , Follow-Up Studies , Forced Expiratory Volume/drug effects , Humans , Internationality , Male , Middle Aged , Pulmonary Disease, Chronic Obstructive/diagnosis , Respiratory Function Tests , Severity of Illness Index , Treatment Outcome , United States
10.
Pulm Pharmacol Ther ; 53: 33-38, 2018 12.
Article in English | MEDLINE | ID: mdl-30218695

ABSTRACT

BACKGROUND: Chronic obstructive pulmonary disease (COPD) causes significant mortality in Japan. GFF MDI is a long-acting muscarinic antagonist/long-acting ß2-agonist fixed-dose combination of glycopyrronium (GP) and formoterol fumarate dihydrate (FF), delivered by a metered dose inhaler (MDI) using co-suspension delivery technology, for the long-term maintenance treatment of COPD. METHODS: This randomized, Phase I, single-dose, four-treatment, four-period, crossover study (NCT02196714) examined the pharmacokinetic (PK) and safety profile of two doses of GFF MDI (28.8 µg/10 µg and 14.4 µg/10 µg) and two doses of GP MDI (28.8 µg and 14.4 µg), both formulated using co-suspension delivery technology, in healthy Japanese subjects (18-45 years of age). PK parameters included area under the curve (AUC) from 0 to 12 h (AUC0-12), AUC from 0 to the time of the last measurable plasma concentration, maximum observed plasma concentration (Cmax), and time to Cmax. Safety was monitored throughout the study. RESULTS: Plasma GP profiles were comparable between GFF MDI and GP MDI formulations containing the same GP dose. Increases in GP AUC0-12 and Cmax were generally dose proportional from 14.4 to 28.8 µg after administration of either formulation. CONCLUSIONS: The addition of FF 10 µg to GP MDI 28.8 µg or 14.4 µg in a fixed-dose combination did not appreciably alter the PK of GP, nor did an increase in GP dose from 14.4 µg to 28.8 µg in a fixed-dose combination with FF 10 µg appreciably alter the PK of formoterol. Both formulations of GFF MDI and GP MDI were well tolerated in healthy Japanese subjects. Data from this study support further evaluation of GFF MDI in Japanese patients with COPD.


Subject(s)
Bronchodilator Agents/administration & dosage , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Muscarinic Antagonists/administration & dosage , Administration, Inhalation , Adolescent , Adult , Area Under Curve , Bronchodilator Agents/adverse effects , Bronchodilator Agents/pharmacokinetics , Cross-Over Studies , Dose-Response Relationship, Drug , Double-Blind Method , Drug Combinations , Drug Delivery Systems , Female , Formoterol Fumarate/adverse effects , Formoterol Fumarate/pharmacokinetics , Glycopyrrolate/adverse effects , Glycopyrrolate/pharmacokinetics , Humans , Japan , Male , Metered Dose Inhalers , Middle Aged , Muscarinic Antagonists/adverse effects , Muscarinic Antagonists/pharmacokinetics , Suspensions , Young Adult
11.
Respir Med ; 138: 74-80, 2018 05.
Article in English | MEDLINE | ID: mdl-29724397

ABSTRACT

OBJECTIVES: This study compared the efficacy, pharmacokinetics (PK), and safety of GFF MDI (Bevespi Aerosphere®), a fixed-dose combination of glycopyrronium and formoterol fumarate dihydrate (14.4/10 µg) delivered by a metered dose inhaler (MDI) formulated using innovative co-suspension delivery technology, in patients with moderate-to-very severe chronic obstructive pulmonary disease (COPD) with and without the Aerochamber Plus® Flow-Vu® valved holding chamber (VHC). METHODS: In this multicenter, open-label, crossover, Phase III study (NCT02454959), patients were randomized to receive GFF MDI 14.4/10 µg (equivalent to glycopyrrolate/formoterol fumarate 18/9.6 µg) twice daily for 7 days with and without the VHC. The primary endpoint was forced expiratory volume in 1 s area under the curve from 0 to 12 h (FEV1 AUC0-12) on Day 8. Steady state PK parameters for glycopyrronium and formoterol (AUC0-12, peak concentration [Cmax] and time to peak concentration [tmax]) were estimated from 12-h plasma concentration time data on Day 8. Safety and tolerability were also assessed throughout. RESULTS: Eighty patients were randomized. On Day 8, the ratio (90% confidence interval [CI]) of least squares mean (LSM) FEV1 AUC0-12 for GFF MDI with VHC (LSM = 1538 mL; n = 67) versus without VHC (LSM = 1516 mL; n = 68) was 101.4% (100.1, 102.7). PK parameters were comparable overall with a slightly higher exposure to glycopyrronium with the VHC. The AUC0-12 geometric LSM ratio (90% CI) for GFF MDI with versus without VHC was 115.99% (99.74, 134.89) for glycopyrronium and 96.66% (86.69, 107.78) for formoterol. GFF MDI with and without VHC were well tolerated with a similar adverse event profile. CONCLUSIONS: The magnitude of bronchodilatory effect was similar with and without a VHC following GFF MDI treatment. This, together with the PK and safety profiles, supports the use of the VHC with GFF MDI for the maintenance treatment of COPD, which could be particularly useful for patients who have difficulty with the coordination of an MDI.


Subject(s)
Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Metered Dose Inhalers , Pulmonary Disease, Chronic Obstructive/drug therapy , Aged , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/adverse effects , Bronchodilator Agents/blood , Drug Combinations , Female , Forced Expiratory Volume/drug effects , Formoterol Fumarate/adverse effects , Formoterol Fumarate/blood , Glycopyrrolate/adverse effects , Glycopyrrolate/blood , Humans , Inhalation Spacers , Male , Middle Aged , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/adverse effects , Muscarinic Antagonists/blood , Pulmonary Disease, Chronic Obstructive/blood , Pulmonary Disease, Chronic Obstructive/physiopathology , Severity of Illness Index
12.
Pulm Pharmacol Ther ; 51: 18-25, 2018 08.
Article in English | MEDLINE | ID: mdl-29763659

ABSTRACT

INTRODUCTION: BGF MDI, a budesonide, glycopyrronium, and formoterol fumarate dihydrate triple fixed-dose combination metered dose inhaler formulated using co-suspension delivery technology, is currently in Phase III global development for chronic obstructive pulmonary disease. METHODS: This was a Phase I, randomized, double-blind, placebo-controlled, ascending-dose, crossover study to assess the safety and pharmacokinetic profiles of two doses of BGF MDI in healthy adult subjects of Japanese descent (NCT02197975). Safety assessments included monitoring for adverse events (AEs). Pharmacokinetic parameters were assessed following a single dose and 7-days chronic dosing with BGF MDI 160/14.4/10 µg and BGF MDI 320/14.4/10 µg. RESULTS: Twenty subjects were randomized and included in the safety and pharmacokinetic populations; mean age 29.7 years; 65% male; and mean body mass index of 21.9 kg/m2. The incidences of treatment-emergent AEs (TEAEs) were similar between treatments. All the TEAEs were mild to moderate in severity. Budesonide area under the plasma concentration-time curve from 0 to 12 h (AUC0-12) and maximum observed plasma concentration (Cmax) values were approximately double for the higher dose of BGF MDI compared with the lower dose on Day 1 and also following chronic dosing on Day 8. Glycopyrronium and formoterol AUC0-12 and Cmax values on Day 8 were comparable between the two doses of BGF MDI. DISCUSSION: Both doses of BGF MDI were well tolerated in healthy subjects of Japanese descent and the systemic exposure to budesonide was dose proportional for BGF MDI 160/14.4/10 µg and BGF MDI 320/14.4/10 µg. The safety and pharmacokinetics for BGF MDI 160/14.4/10 µg and BGF MDI 320/14.4/10 µg in Japanese subjects were comparable to data from previous studies in Western populations, which suggests that the safety and efficacy profile of BGF MDI should be similar in Western and Japanese subjects.


Subject(s)
Bronchodilator Agents/administration & dosage , Budesonide/administration & dosage , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Administration, Inhalation , Adult , Area Under Curve , Asian People , Bronchodilator Agents/adverse effects , Bronchodilator Agents/pharmacokinetics , Budesonide/adverse effects , Budesonide/pharmacokinetics , Cross-Over Studies , Dose-Response Relationship, Drug , Double-Blind Method , Drug Combinations , Female , Formoterol Fumarate/adverse effects , Formoterol Fumarate/pharmacokinetics , Glycopyrrolate/adverse effects , Glycopyrrolate/pharmacokinetics , Humans , Male , Metered Dose Inhalers , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/adverse effects , Muscarinic Antagonists/pharmacokinetics , Young Adult
13.
Int J Chron Obstruct Pulmon Dis ; 13: 1187-1194, 2018.
Article in English | MEDLINE | ID: mdl-29695902

ABSTRACT

PURPOSE: Due to the burden of COPD in Japan, new pharmacologic treatments are needed to meet patient requirements. This study assessed the efficacy and safety of glycopyrronium (GP) delivered via metered dose inhaler (MDI) in Japanese patients with moderate-to-severe COPD. METHODS: This Phase IIb, multicenter, randomized, double-blind, 7-day, crossover study compared GP MDI 28.8, 14.4, and 7.2 µg with placebo MDI (all administered as two inhalations, twice daily). The primary endpoint was change from baseline in morning pre-dose trough forced expiratory volume in 1 second (FEV1) on Day 8. Secondary endpoints included FEV1 area under the curve from 0 to 2 hours (AUC0-2) and peak change from baseline in FEV1 on Days 1 and 8 and forced vital capacity AUC0-2 on Day 8. Safety was also assessed. ClinicalTrials.gov Identifier: NCT03256552; http://www.ClinicalTrials.gov. RESULTS: Sixty-six patients were randomized and 62 were included in the modified intent-to-treat population (mean age 67.5 years). All three GP MDI doses significantly improved change from baseline in morning pre-dose trough FEV1 on Day 8 compared with placebo MDI (least squares mean differences 108-131 mL; all p<0.0001). Significant improvements in secondary efficacy endpoints were also observed for all three GP MDI doses compared with placebo MDI (all p<0.0001). Dose-response plateaued at GP MDI 14.4 µg. No significant safety findings were observed with any GP MDI dose or placebo MDI. CONCLUSIONS: The results of this study suggest that GP MDI 14.4 µg (7.2 µg per inhalation) is the most appropriate dose for use in Phase III studies in Japanese patients with moderate-to-severe COPD.


Subject(s)
Bronchodilator Agents/administration & dosage , Drug Delivery Systems/instrumentation , Glycopyrrolate/administration & dosage , Lung/drug effects , Metered Dose Inhalers , Muscarinic Antagonists/administration & dosage , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adult , Aged , Aged, 80 and over , Bronchodilator Agents/adverse effects , Cross-Over Studies , Double-Blind Method , Female , Forced Expiratory Volume , Glycopyrrolate/adverse effects , Humans , Intention to Treat Analysis , Japan , Lung/physiopathology , Male , Middle Aged , Muscarinic Antagonists/adverse effects , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/physiopathology , Severity of Illness Index , Time Factors , Treatment Outcome
14.
Article in English | MEDLINE | ID: mdl-29606861

ABSTRACT

Purpose: The efficacy and tolerability of GFF MDI (Bevespi Aerosphere®), a fixed-dose combination of glycopyrronium (GP)/formoterol fumarate dihydrate (FF) 14.4/10 µg (equivalent to glycopyrrolate/formoterol fumarate 18/9.6 µg) delivered by metered dose inhaler (MDI) using innovative co-suspension delivery technology, has been investigated in a Phase III clinical trial program (NCT01854645, NCT01854658, NCT01970878) in patients with COPD. Here, we present findings from a pharmacokinetic (PK) sub-study of NCT01854645 (PINNACLE-1). Methods: PINNACLE-1 was a multicenter, randomized, double-blind, parallel-group, 24 wk chronic-dosing, placebo- and active-controlled study. The PK sub-study assessed the systemic accumulation of glycopyrronium and formoterol following administration of GFF MDI 14.4/10 µg, GP MDI 14.4 µg, or FF MDI 10 µg (all BID) for 12 wks. Plasma for PK analysis was collected for up to 12 h after dosing, on Day 1 and Week 12. Results: Of 2,103 patients randomized in PINNACLE-1, 292 participated in the PK sub-study. The plasma concentration-time profiles of glycopyrronium were similar following treatment with GFF MDI or GP MDI, both after single dosing and at Week 12. Accumulation at Week 12 relative to Day 1 was up to 2.30-fold for glycopyrronium. The plasma concentration-time profiles of formoterol were similar following treatment with GFF MDI or FF MDI, both after single dosing and at Week 12. Accumulation at Week 12 relative to Day 1 was up to 1.62-fold for formoterol. Conclusion: Overall, the results have characterized the accumulation of glycopyrronium and formoterol associated with GFF MDI, GP MDI, and FF MDI, and indicated that there were no meaningful PK interactions, whether drug-drug or due to formulation, between glycopyrronium and formoterol following treatment with GFF MDI formulated using co-suspension delivery technology.


Subject(s)
Adrenergic beta-2 Receptor Agonists/pharmacokinetics , Bronchodilator Agents/pharmacokinetics , Formoterol Fumarate/pharmacokinetics , Glycopyrrolate/pharmacokinetics , Lung/drug effects , Metered Dose Inhalers , Muscarinic Antagonists/pharmacokinetics , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adrenergic beta-2 Receptor Agonists/administration & dosage , Adrenergic beta-2 Receptor Agonists/adverse effects , Adrenergic beta-2 Receptor Agonists/blood , Adult , Aged , Aged, 80 and over , Australia , Biological Availability , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/adverse effects , Bronchodilator Agents/blood , Double-Blind Method , Drug Combinations , Female , Formoterol Fumarate/administration & dosage , Formoterol Fumarate/adverse effects , Formoterol Fumarate/blood , Glycopyrrolate/administration & dosage , Glycopyrrolate/adverse effects , Glycopyrrolate/blood , Humans , Lung/physiopathology , Male , Middle Aged , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/adverse effects , Muscarinic Antagonists/blood , New Zealand , Pulmonary Disease, Chronic Obstructive/blood , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/physiopathology , Severity of Illness Index , Treatment Outcome , United States
15.
Pulm Pharmacol Ther ; 49: 67-74, 2018 04.
Article in English | MEDLINE | ID: mdl-29567116

ABSTRACT

BACKGROUND: Glycopyrrolate/formoterol fumarate (GFF) metered dose inhaler (MDI) is a fixed-dose combination of the long-acting muscarinic antagonist (LAMA), glycopyrrolate (GP), and the long-acting ß2-agonist (LABA), formoterol fumarate (FF), delivered via metered dose inhaler using innovative co-suspension delivery technology. Here we report the results of two studies that examined the cardiovascular safety of GFF MDI. METHODS: The thorough QT (TQT) study was a Phase I, randomized, double-blind, single-dose, crossover study to assess GFF MDI 18/9.6 (Bevespi Aerosphere®), GFF MDI 144/38.4 and GP MDI 144 µg, compared with placebo MDI and open-label moxifloxacin 400 mg (active control) in healthy volunteers (PT003009). The cardiovascular safety study in patients with chronic obstructive pulmonary disease (COPD) was a Phase IIb, randomized, multicenter, double-blind, 14-day dosing, parallel-group study to evaluate GFF MDI 36/9.6, GP MDI 36 and FF MDI 9.6 µg compared with open-label FF dry powder inhaler (DPI; Foradil® Aerolizer®) 12 µg, in patients with moderate-to-severe COPD (PT003003 [NCT01349803]). RESULTS: Seventy healthy volunteers were randomized in the TQT study. GFF MDI 144/38.4, GFF MDI 18/9.6 and GP MDI 144 µg all met the confidence interval-based criteria for negative QT prolongation potential. In the study in patients with COPD, 237 subjects were randomized and treated. GFF MDI 36/9.6, GP MDI 36, and FF MDI 9.6 µg did not result in clinically meaningful changes from baseline in 24-h mean heart rate at Day 14 (primary endpoint) or in any of the other Holter monitoring endpoints at Day 14, compared with FF DPI 12 µg. CONCLUSIONS: No clinically significant effects on cardiovascular safety occurred at therapeutic or supratherapeutic doses of GFF MDI, apart from a small and transient increase in heart rate following supratherapeutic dose of GFF MDI 144/38.4 µg. Furthermore, there were no unexpected safety findings reported in either healthy volunteers or patients with COPD.


Subject(s)
Double-Blind Method , Drug Delivery Systems , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Pulmonary Disease, Chronic Obstructive/drug therapy , Adolescent , Adult , Aged , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/adverse effects , Cross-Over Studies , Drug Combinations , Female , Formoterol Fumarate/adverse effects , Glycopyrrolate/adverse effects , Humans , Long QT Syndrome/etiology , Male , Metered Dose Inhalers , Middle Aged , Moxifloxacin/administration & dosage , Moxifloxacin/adverse effects , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/adverse effects , Pulmonary Disease, Chronic Obstructive/physiopathology , Technology, Pharmaceutical/methods , Young Adult
16.
Eur J Pharm Sci ; 111: 450-457, 2018 Jan 01.
Article in English | MEDLINE | ID: mdl-29055732

ABSTRACT

This gamma scintigraphy imaging study was the first to assess pulmonary and extrathoracic deposition and regional lung deposition patterns of a radiolabelled long-acting muscarinic antagonist/long-acting ß2-agonist fixed-dose combination glycopyrronium/formoterol fumarate dihydrate (GFF) 14.4/10µg (equivalent to glycopyrrolate/formoterol fumarate 18/9.6µg), delivered by pressurized metered dose inhaler (pMDI) using novel co-suspension delivery technology. In this Phase I, randomized, single-centre, single-blind, single-dose, two-treatment, crossover, placebo-controlled study (PT003020), 10 healthy male adults received two actuations of GFF pMDI (7.2/5.0µg per actuation) and placebo pMDI (containing phospholipid-based porous particles without active pharmaceutical ingredient), both radiolabelled with 99mTc, up to 5MBq per actuation. Gamma scintigraphy images of lungs, stomach, head and neck were recorded. In addition, images of the actuators after use, collected mouth washings and exhalation filters were acquired. On average, 38.4% of the emitted dose of radiolabelled GFF pMDI, and 32.8% of radiolabelled placebo pMDI, was deposited in the lungs. The percentage emitted dose detected in the oropharyngeal and stomach regions was 61.4% and 66.9% for radiolabelled GFF pMDI and placebo pMDI, respectively. For both treatments, ≤0.25% of the emitted dose was detected in the exhalation filter. The normalized outer/inner ratio was 0.57 and 0.59 for radiolabelled GFF pMDI and placebo pMDI, respectively, and the standardized central/peripheral ratio was 1.85 and 1.94 respectively, indicating delivery of both co-suspension delivery technology formulations throughout the airways. There were no new or unexpected safety findings. In conclusion, both formulations were efficiently and uniformly deposited in the lungs with similar regional deposition patterns, oropharyngeal and stomach deposition, exhalation fraction and actuator-recovered dose.


Subject(s)
Formoterol Fumarate/administration & dosage , Formoterol Fumarate/pharmacokinetics , Glycopyrrolate/administration & dosage , Glycopyrrolate/pharmacokinetics , Lung , Administration, Inhalation , Adult , Aerosols/administration & dosage , Aerosols/pharmacokinetics , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/pharmacokinetics , Cross-Over Studies , Drug Combinations , Drug Delivery Systems , Humans , Male , Metered Dose Inhalers , Middle Aged , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/pharmacokinetics , Radionuclide Imaging , Suspensions
17.
Respir Res ; 18(1): 157, 2017 08 18.
Article in English | MEDLINE | ID: mdl-28821260

ABSTRACT

BACKGROUND: Symptoms of chronic obstructive pulmonary disease may vary throughout the day and it is important that therapeutic approaches provide 24-h symptom control. We report the results of two phase IIIb crossover studies, PT003011 and PT003012, investigating the 24-h lung function profile of GFF MDI (glycopyrrolate/formoterol fumarate 18/9.6 µg delivered using innovative co-suspension delivery technology) administered twice daily. METHODS: Patients with moderate-to-very severe chronic obstructive pulmonary disease received 4 weeks' treatment with each of GFF MDI, placebo MDI, and open-label tiotropium (PT003011 only). Lung function was assessed over 24 h on day 29 of each treatment period. The primary outcome was forced expiratory volume in 1 second area under the curve from 0 to 24 h (FEV1AUC0-24). Other outcomes included change from baseline in average daily rescue medication use over the treatment period. In addition, we conducted a post-hoc analysis of data pooled from both studies to further characterize the effect of GFF MDI on inspiratory capacity. RESULTS: GFF MDI treatment significantly increased FEV1AUC0-24 versus placebo in studies PT003011 (n = 75) and PT003012 (n = 35) on day 29 (both studies p < 0.0001), with similar improvements in FEV1AUC versus placebo for hours 0-12 and 12-24. In PT003011, improvements with GFF MDI versus tiotropium in FEV1AUC were greater during hours 12-24 compared to 0-12 h. GFF MDI treatment also resulted in a significant reduction in rescue medication use versus placebo (-0.84 [p<0.0001] and -1.11 [p=0.0054] puffs/day in PT003011 and PT003012, respectively), and versus tiotropium in PT003011 (-0.44 [p=0.017] puffs/day). A post-hoc pooled analysis showed patients treated with GFF MDI were more likely to achieve a >15% increase from baseline in inspiratory capacity than patients treated with placebo or tiotropium (72.1%, 19.0% and 47.0% of patients, respectively after the evening dose on day 29). There were no significant safety/tolerability findings. CONCLUSIONS: GFF MDI significantly improved 24-h lung function versus placebo in patients with moderate-to-very severe chronic obstructive pulmonary disease, with similar benefits in the second 12-h period compared to the first, supporting twice-daily dosing of GFF MDI. TRIAL REGISTRATION: Pearl Therapeutics, Inc.; www.clinicaltrials.gov ; NCT02347072 and NCT02347085 . Registered 21 January 2015.


Subject(s)
Bronchodilator Agents/administration & dosage , Drug Delivery Systems/methods , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Inspiratory Capacity/drug effects , Pulmonary Disease, Chronic Obstructive/drug therapy , Aged , Cross-Over Studies , Double-Blind Method , Drug Therapy, Combination , Female , Humans , Inspiratory Capacity/physiology , Male , Middle Aged , Pulmonary Disease, Chronic Obstructive/diagnosis , Pulmonary Disease, Chronic Obstructive/physiopathology , Time Factors
18.
Respir Med ; 126: 105-115, 2017 05.
Article in English | MEDLINE | ID: mdl-28427541

ABSTRACT

BACKGROUND: The long-term safety and efficacy of a novel Co-Suspension™ Delivery Technology glycopyrrolate (GP)/formoterol fumarate (FF) 18/9.6 µg fixed-dose combination metered dose inhaler (GFF MDI) were investigated in a 28-week safety extension study (PINNACLE-3, NCT01970878) of two randomized controlled Phase III trials (PINNACLE-1 and -2; NCT01854645 and NCT01854658) in subjects with moderate-to-very severe chronic obstructive pulmonary disease (COPD). METHODS: Subjects completing 24 weeks' treatment with GFF MDI, GP MDI, FF MDI (all twice-daily) or open-label tiotropium 18 µg (once-daily) in PINNACLE-1 or -2 were randomly selected to continue treatment for 28 weeks. The target enrollment for PINNACLE-3 was 850 subjects. Safety and efficacy were evaluated over 52 weeks. RESULTS: Of 3274 subjects randomized to active treatment in PINNACLE-1 or -2, 892 entered PINNACLE-3. Incidences of adverse events, serious adverse events and major adverse cardiovascular events were similar across treatment groups with no unexpected safety findings. For change from baseline in morning pre-dose trough forced expiratory volume in 1 s (FEV1), treatment differences for GFF MDI versus GP MDI, FF MDI and open-label tiotropium over 52 weeks were 57, 65 and 25 mL, respectively (p ≤ 0.0117). Average daily rescue medication use was significantly reduced for GFF MDI versus GP MDI and open-label tiotropium (p ≤ 0.0002). Statistically significant improvements were observed with GFF MDI versus monocomponents in Self-Administered Computerized Transition Dyspnea Index focal score, and in St George's Respiratory Questionnaire total score versus GP MDI. CONCLUSIONS: Results confirmed the long-term safety and tolerability of GFF MDI 18/9.6 µg twice-daily in subjects with moderate-to-very severe COPD. Improvements in efficacy endpoints were also sustained over 52 weeks.


Subject(s)
Formoterol Fumarate/pharmacology , Glycopyrrolate/pharmacology , Metered Dose Inhalers/statistics & numerical data , Pulmonary Disease, Chronic Obstructive/drug therapy , Tiotropium Bromide/pharmacology , Administration, Inhalation , Adrenergic beta-2 Receptor Agonists/administration & dosage , Adrenergic beta-2 Receptor Agonists/therapeutic use , Aged , Bronchodilator Agents/administration & dosage , Bronchodilator Agents/therapeutic use , Drug Therapy, Combination , Drug Tolerance , Dyspnea/drug therapy , Female , Forced Expiratory Volume/drug effects , Formoterol Fumarate/administration & dosage , Formoterol Fumarate/adverse effects , Glycopyrrolate/administration & dosage , Glycopyrrolate/adverse effects , Humans , Male , Middle Aged , Muscarinic Antagonists/administration & dosage , Muscarinic Antagonists/therapeutic use , Severity of Illness Index , Smoking/epidemiology , Tiotropium Bromide/administration & dosage , Treatment Outcome
19.
Chest ; 151(2): 340-357, 2017 Feb.
Article in English | MEDLINE | ID: mdl-27916620

ABSTRACT

BACKGROUND: Long-acting muscarinic antagonist (LAMA)/long-acting ß2-agonist (LABA) combinations are a treatment option for patients with COPD who continue to have symptoms despite treatment with a LAMA or a LABA alone. The Efficacy and Safety of PT003, PT005, and PT001 in Subjects with Moderate-to-Very Severe COPD (PINNACLE-1) (NCT01854645) and the Multi-Center Study to Assess the Efficacy and Safety of PT003, PT005, and PT001 in Subjects with Moderate-to-Very Severe COPD (PINNACLE-2) (NCT01854658) trials investigated the efficacy and safety of a novel glycopyrrolate [GP]/formoterol [FF] 18/9.6-µg (GFF) metered dose inhaler (MDI) formulated using the Co-Suspension Delivery Technology in patients with moderate-to-very severe COPD. METHODS: These two phase III trials took place over 24 weeks and were randomized, double blind, and placebo controlled; 2,103 and 1,615 patients (40-80 years of age), respectively, were randomized. Patients received GFF MDI, GP MDI 18 µg, FF MDI 9.6 µg, or placebo MDI (all twice daily), or tiotropium 18 µg dry powder inhaler (once daily in PINNACLE-1 only [open-label active comparator]). Efficacy and safety were assessed. RESULTS: At week 24, differences in change from baseline in the morning predose trough FEV1 for GFF MDI vs placebo MDI, GP MDI, and FF MDI were 150 mL, 59 mL, and 64 mL in PINNACLE-1 (all P < .0001) and 103 mL, 54 mL, and 56 mL in PINNACLE-2 (all P < .001), respectively. There were no significant safety findings (incidence of adverse events was similar between treatment arms). CONCLUSIONS: We conclude that GFF MDI 18/9.6 µg demonstrated superiority over placebo and monocomponent MDIs and was well tolerated, thus providing an additional treatment option for patients with moderate-to-very severe COPD. TRIAL REGISTRY: ClinicalTrials.gov; No.: NCT01854645 and No. NCT01854658; URL: www.clinicaltrials.gov.


Subject(s)
Bronchodilator Agents/administration & dosage , Formoterol Fumarate/administration & dosage , Glycopyrrolate/administration & dosage , Muscarinic Antagonists/administration & dosage , Pulmonary Disease, Chronic Obstructive/drug therapy , Administration, Inhalation , Adult , Aged , Aged, 80 and over , Budesonide/therapeutic use , Double-Blind Method , Drug Combinations , Drug Therapy, Combination , Female , Fluticasone/therapeutic use , Forced Expiratory Volume , Glucocorticoids/therapeutic use , Humans , Male , Metered Dose Inhalers , Middle Aged , Prednisone/therapeutic use , Pulmonary Disease, Chronic Obstructive/physiopathology , Suspensions , Vital Capacity
20.
J Biopharm Stat ; 23(1): 82-97, 2013.
Article in English | MEDLINE | ID: mdl-23331223

ABSTRACT

Thorough QT/QTc (TQT) trials are conducted to assess a drug's risk potential for prolonging the QT interval. In a randomized crossover, multiple postdose electrocardiograph (ECG) readings are collected over time, within each period leading to a repeated-measures scenario. Additionally, baseline readings at single or multiple time points are collected prior to treatment. Two active, yet seemingly separate, areas of statistical research for TQT crossover studies concern the method of baseline correction and the specified covariance structure for repeated measures analysis. Due to interdependence of the covariance structure of baseline-corrected QTc values and the definition of baseline, these two research areas cannot be considered separately. We illustrate how the covariance structure for baseline-corrected QTc values differs under various definitions of baseline and provide recommendations on the choice of baseline: Time-matched baseline averaged over periods and time-matched baseline from the first period only are preferable in terms of efficiency; in case a period-specific correction is required to account for the treatment carryover effect, period-specific time-averaged baseline with multiple measurements taken predose in each period offers greater efficiency than a single predose baseline. This research on the interdependence of baseline correction method and covariance structure enables statisticians to use observed data from previous TQT studies to plan design and analysis for future studies.


Subject(s)
Aza Compounds/administration & dosage , Quinolines/administration & dosage , Randomized Controlled Trials as Topic/methods , Research Design , Cross-Over Studies , Fluoroquinolones , Humans , Moxifloxacin , Randomized Controlled Trials as Topic/standards , Research Design/standards
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