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Study to Assess PT010 in Adult and Adolescent Participants With Inadequately Controlled Asthma (KALOS)

A Randomized, Double-Blind, Double Dummy, Parallel Group, Multicenter Variable Length Study to Assess the Efficacy and Safety of PT010 Relative to PT009 and Symbicort® in Adult and Adolescent Participants With Inadequately Controlled Asthma

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04609878
Acronym
KALOS
Enrollment
2274
Registered
2020-10-30
Start date
2020-12-15
Completion date
2025-03-21
Last updated
2026-06-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Asthma

Brief summary

This is a variable length study to evaluate the efficacy and safety of budesonide/glycopyrronium/formoterol inhaler in adults and adolescents with severe asthma inadequately controlled with standard of care

Detailed description

This is a randomized, double-blind, double dummy, parallel group, multicenter 24 to 52 week variable length study to assess the efficacy and safety of budesonide, glycopyrronium, and formoterol fumarate metered dose inhaler (MDI) relative to budesonide and formoterol fumarate MDI and Symbicort® pressurized MDI in adult and adolescent participants with inadequately controlled asthma. Approximately 2200 participants will be randomized globally.

Interventions

Budesonide, glycopyrronium, and formoterol fumarate metered dose inhaler

Budesonide, glycopyrronium, and formoterol fumarate metered dose inhaler

Budesonide and formoterol fumarate metered dose inhaler

Budesonide/formoterol fumarate pressurized metered dose inhaler

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
12 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

1. 12 to 80 years of age, male and female, BMI \<40 kg/m2; females must be not of childbearing potential or using a form of highly effective birth control. 2. Documented history of physician-diagnosed asthma \> and/or = 1 year prior to V1. 3. Regularly using a stable daily ICS/LABA regimen (including a stable ICS dose) with medium-to-high ICS doses for at least 4 weeks prior to V1. 4. ACQ-7 total score ≥1.5 at Visits 1, 3, and 5 (pre-randomization). 5. FEV1 % (assessed as an average of the 60 and 30 minute pre-dose assessments) predicted normal at V1, 2, 3, 4, and 5 (pre-randomization) * Participants ≥ 18 years of age: \< 80% * Participants 12 to \<18 years of age: \< 90% 6. FEV1 post-albuterol at V2 or V3 (if repeat needed). * Participants \> and/or = 18 years of age: Increase \> and/or = 12% and \> and/or = 200 mL. * Participants 12 to \<18 years of age: Increase =12% either in the 12 months prior to Visit 1 or at Visit 2, or at Visit 3. * Note: Even if there is documented history of reversibility, all participants must be assessed for reversibility at Visit 2 (and Visit 3, if reversibility is not demonstrated at Visit 2) to provide reversibility baseline data for characterization. 7. Willing and, in the opinion of the Investigator, able to adjust current asthma therapy, as required by the protocol. 8. Demonstrate acceptable MDI/pMDI administration technique. 9. Received no asthma medication other than run-in BFF MDI BID and albuterol as needed during screening (except for allowed medications as defined in Table 9 and systemic corticosteroid or ICS for the treatment of an asthma exacerbation). 10. eDiary 14-day compliance ≥70% during screening (defined as completing the daily eDiary for any 10 mornings and any 10 evenings and answering "Yes" to taking 2 puffs of run-in BFF MDI for any 10 mornings and 10 evenings in the last 14 days prior to randomization). 11. No respiratory infection in the 4 weeks prior to randomization, or asthma exacerbation treated with systemic corticosteroid and/or additional ICS treatment in the 4 weeks prior to randomization.

Exclusion criteria

1\. Completed treatment for respiratory infection or asthma exacerbation with systemic corticosteroids within 4 weeks of V1. 2a. Participants where, in the opinion of the Investigator, treatment with biological therapy for asthma would be appropriate. 2b. Any marketed or investigational biologics within 3 months or 5 half-lives of V1, whichever is longer and must not be used during study duration. 3\. Current smokers, former smokers with \>10 pack-years history, or former smokers who stopped smoking \<6 months prior to V1 (including all forms of tobacco, e-cigarettes or other vaping devices, and marijuana). 4\. Current evidence of Chronic Obstructive Pulmonary Disease (COPD). 5a. Oral and IV corticosteroid use (any dose) within 4 weeks of V1. 5b. Use of systemic corticosteroids for any other reason except for the acute treatment of severe asthma exacerbation is prohibited for the duration of the study. 5c. Depot corticosteroid use for any reason within 3 months of V1. 6\. Use of Long-Acting Muscarinic Antagonist (LAMA), either alone or as part of an inhaled combination therapy, in the 12 weeks prior to V1. 7\. Use of oral beta2-agonist within 3 months of V1. 8\. Use of any immunomodulators or immunosuppressive medication within 3 months or 5 half-lives, whichever is longer, and must not be used during the study duration. 9\. Narrow angle glaucoma not adequately treated and/or change in vision that may be relevant, in the opinion of the Investigator, within 3 months of Visit 1. 10\. Life-threatening asthma defined as a history of significant asthma episode(s) requiring intubation associated with hypercapnia, respiratory arrest, hypoxic seizures, or asthma-related syncopal episode(s). 11\. Hospitalization for asthma within 2 months of Visit 1. 12\. Known history of drug or alcohol abuse within 12 months of Visit 1. 13\. Regular use of a nebulizer or a home nebulizer for receiving asthma medications. 14\. Using any herbal products by inhalation or nebulizer within 4 weeks of Visit 1 and does not agree to stop during the study duration. 15\. Participation in another clinical study with a study intervention administered in the last 30 days or 5 half-lives, whichever is longer. Any other study intervention that is not identified in the protocol is prohibited for use during study duration. 16\. Participants with a known hypersensitivity to beta2-agonists, corticosteroids, anticholinergics, or any component of the MDI or pMDI. 17\. Study Investigators, sub-Investigators, coordinators, and their employees or immediate family members. 18\. For women only - currently pregnant (confirmed with positive highly sensitive pregnancy test), breast-feeding, or planned pregnancy during the study or not using acceptable contraception measures, as judged by the Investigator. Please refer to the study protocol for the complete inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in FEV1 AUC0-3 (L) at Week 24Week 24Change from baseline in forced expiratory volume in 1 second (FEV1) area under the curve 0 to 3 hours (AUC0-3) at Week 24. Treatment policy was implemented to handle all intercurrent events (ICEs) with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Rate of Severe Asthma ExacerbationsUp to 52 weeksRate of severe asthma exacerbations was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). An asthma exacerbation was severe if it resulted in at least 1 of the following: a course of systemic corticosteroids for 3 days to treat symptoms of asthma worsening, an ER/urgent care visit that required treatment with systemic corticosteroids, an inpatient hospitalization, or death related to asthma. Consecutive exacerbations with start/stop days ≤7 days apart were considered the same event of the highest severity. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.

Secondary

MeasureTime frameDescription
Percentage of Responders in AQLQ(s)+12 (≥0.5 Increase Equals Response) at Week 24Week 24Percentage of responders in the Asthma Quality of Life Questionnaire for 12 years and older (AQLQ(s)+12) (≥0.5 increase equals response) at Week 24. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Percentage of Responders in SGRQ (≥4.0 Decrease Equals Response) at Week 24Week 24Percentage of responders in the St. George's Respiratory Questionnaire (SGRQ) (≥4.0 decrease equals response) at Week 24. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Change From Baseline in Morning Pre-dose Trough FEV1 (L) at Week 24Week 24Change from baseline in morning pre-dose trough forced expiratory volume in 1 second (FEV1) at Week 24. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Onset of Action on Day 1: Absolute Change in FEV1 (L) at 5 Minutes on Day 1Day 1Onset of action on Day 1: Absolute change in FEV1 at 5 minutes on Day 1. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Rate of Severe Asthma Exacerbations for Participants With Percent Predicted FEV1 ≤55% at BaselineUp to 52 weeksRate of severe asthma exacerbations for participants with percent predicted FEV1 ≤55% at baseline was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). An asthma exacerbation was severe if it resulted in at least 1 of the following: a course of systemic corticosteroids for 3 days to treat symptoms of asthma worsening, an ER/urgent care visit that required treatment with systemic corticosteroids, an inpatient hospitalization , or death related to asthma. Consecutive exacerbations with start/stop days ≤7 days apart were considered the same event of the highest severity. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Rate of Severe Asthma Exacerbations for Participants With ≥1 Severe Exacerbation in the 12 Months Prior to Visit 1Up to 52 weeksRate of severe asthma exacerbations for participants with ≥1 severe exacerbation in the 12 months prior to Visit 1 was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). An asthma exacerbation was considered severe if it resulted in at least 1 of the following: a course of systemic corticosteroids for 3 days to treat symptoms of asthma worsening, an ER/urgent care visit that required treatment with systemic corticosteroids, an inpatient hospitalization, or death related to asthma. Consecutive exacerbations with start/stop days ≤7 days apart were considered the same event of the highest severity. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Time to First Severe Asthma ExacerbationUp to 52 weeksTime to first severe asthma exacerbation was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). Time to first severe asthma exacerbation was the time from the first dose of study medication to the time of onset of the first severe asthma exacerbation. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Rate of Moderate or Severe Asthma ExacerbationsUp to 52 weeksRate of moderate or severe asthma exacerbations was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). An asthma exacerbation was severe if it resulted in at least 1 of the following: a course of systemic corticosteroids for 3 days to treat symptoms of asthma worsening, an ER/urgent care visit that required systemic corticosteroids, an inpatient hospitalization, or death related to asthma. A moderate asthma exacerbation was a worsening of symptoms that resulted in an additional ICS for 3 days. Consecutive exacerbations with start/stop days ≤7 days apart were considered the same event of the highest severity. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Time to First Moderate or Severe Asthma ExacerbationUp to 52 weeksTime to first moderate/severe asthma exacerbation was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). Time to first moderate or severe asthma exacerbation was the time from the first dose of study medication to the time of onset of the first moderate or severe asthma exacerbation. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Percentage of Responders in ACQ-7 (≥0.5 Decrease Equals Response) at Week 24Week 24Pooled percentage of responders in ACQ-7 (≥0.5 decrease equals response) at Week 24 was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Percentage of Responders in ACQ-5 (≥0.5 Decrease Equals Response) at Week 24Week 24Pooled percentage of responders in ACQ-5 (≥0.5 decrease equals response) at Week 24 was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Percentage of Responders in ACQ-7 (≥0.5 Decrease Equals Response) at Week 24Week 24Percentage of responders in the Asthma Control Questionnaire (ACQ)-7 (≥0.5 decrease equals response) at Week 24. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Pooled (KALOS/LOGOS): Percentage of Responders in AQLQ(s)+12 (≥0.5 Increase Equals Response) at Week 24Week 24Pooled percentage of responders in AQLQ(s)+12 (≥0.5 increase equals response) at Week 24 was assessed in a pre-specified pooled analysis across replicate studies D5982C00007 and D5982C00008 (NCT04609904). Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.
Percentage of Responders in the ACQ-5 (≥0.5 Decrease Equals Response) at Week 24Week 24Percentage of responders in ACQ-5 (≥0.5 decrease equals response) at Week 24. Treatment policy was implemented to handle all ICEs with the exception of initiation of new asthma therapy or use of prohibited medications thought to impact efficacy in conjunction with premature discontinuation of study intervention, for which the composite strategy was implemented.

Countries

Argentina, Belgium, Bulgaria, Canada, Chile, Hungary, India, Italy, Japan, New Zealand, Peru, Philippines, Poland, Puerto Rico, Romania, South Korea, Spain, Taiwan, Thailand, United States, Vietnam

Participant flow

Recruitment details

A total of 2274 subjects were randomized at 378 study centers in 20 countries from 15 December 2020. The last subject completed their last study visit on 21 March 2025. Of the 2274 randomized subjects, all populations excluded 125 subjects due to GCP violations and 5 subjects due to not receiving study therapy.

Pre-assignment details

Adult and adolescent subjects with inadequately controlled moderate to severe asthma were randomized to 1 of 4 treatment groups: BGF MDI 320/28.8/9.6 μg, BGF MDI 320/14.4/9.6 μg, BFF MDI 320/9.6 μg, and Symbicort pMDI 320/9 μg. Subjects who were eligible for the study discontinued their medium or high dose ICS/LABA at Visit 1 and initiated run-in BFF MDI until randomization.

Baseline characteristics

Characteristic
Age, Categorical
Age group (years)
<=18 years
22 Participants
Age, Categorical
Age group (years)
>=65 years
148 Participants
Age, Categorical
Age group (years)
Between 18 and 65 years
432 Participants
Baseline Pre-bronchodilator Percent Predicted FEV1 (%)58.7 Percentage
STANDARD_DEVIATION 12.3
Baseline Reversibility (%)23.6 Percentage
STANDARD_DEVIATION 19.9
Baseline Severe Asthma Exacerbation History Within the Prior Year
0 exacerbations
204 Participants
Baseline Severe Asthma Exacerbation History Within the Prior Year
1 exacerbation
272 Participants
Baseline Severe Asthma Exacerbation History Within the Prior Year
≥2 exacerbations
452 Participants
Ethnicity (NIH/OMB)
Ethnicity
Hispanic or Latino
664 Participants
Ethnicity (NIH/OMB)
Ethnicity
Not Hispanic or Latino
412 Participants
Ethnicity (NIH/OMB)
Ethnicity
Unknown or Not Reported
0 Participants
Prior Inhaled Corticosteroid (ICS) Dose
High
911 Participants
Prior Inhaled Corticosteroid (ICS) Dose
Low
4 Participants
Prior Inhaled Corticosteroid (ICS) Dose
Medium
344 Participants
Prior Inhaled Corticosteroid (ICS) Dose
Missing
0 Participants
Race (NIH/OMB)
Race
American Indian or Alaska Native
15 Participants
Race (NIH/OMB)
Race
Asian
518 Participants
Race (NIH/OMB)
Race
Black or African American
9 Participants
Race (NIH/OMB)
Race
More than one race
49 Participants
Race (NIH/OMB)
Race
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Race
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
Race
White
216 Participants
Region of Enrollment
Argentina
102 Participants
Region of Enrollment
Belgium
1 Participants
Region of Enrollment
Bulgaria
85 Participants
Region of Enrollment
Canada
53 Participants
Region of Enrollment
Chile
23 Participants
Region of Enrollment
Hungary
130 Participants
Region of Enrollment
India
42 Participants
Region of Enrollment
Italy
3 Participants
Region of Enrollment
Japan
52 Participants
Region of Enrollment
Korea, Republic Of
9 Participants
Region of Enrollment
New Zealand
2 Participants
Region of Enrollment
Peru
40 Participants
Region of Enrollment
Philippines
111 Participants
Region of Enrollment
Poland
58 Participants
Region of Enrollment
Romania
71 Participants
Region of Enrollment
Spain
4 Participants
Region of Enrollment
Taiwan, China
12 Participants
Region of Enrollment
Thailand
6 Participants
Region of Enrollment
United States
57 Participants
Region of Enrollment
Viet Nam
23 Participants
Sex: Female, Male
Sex
Female
384 Participants
Sex: Female, Male
Sex
Male
114 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
1 / 3421 / 5941 / 6062 / 602
other
Total, other adverse events
81 / 342109 / 594123 / 606119 / 602
serious
Total, serious adverse events
18 / 34232 / 59434 / 60632 / 602

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 1, 2026