Trial Outcomes & Findings for The Safety and Effectiveness of MK0476 (Montelukast) in Patients With Chronic Asthma (0476-388) (NCT NCT00739297)

NCT ID: NCT00739297

Last Updated: 2024-05-09

Results Overview

FEV1 measurements taken at 0 (=baseline), 10, 20, 30, 45, 60, 120, 180 and 240 minutes contributed to the average change from baseline over 4 hours. The number of minutes between consecutive measurements was used as weighting factor. The time-weighted average change was standardized by dividing by the time associated with the last measurement.

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

68 participants

Primary outcome timeframe

0 (=baseline) to 4 hours after treatment with montelukast

Results posted on

2024-05-09

Participant Flow

Patients were recruited from 6 centers in the United States between July and December 2008.

117 participants were screened; 49 were excluded. Randomized patients met the following criteria during the prestudy period: FEV1 (Forced expiratory volume in one second) 50-85% predicted while withholding short-acting beta agonist (SABA) and reversibility of airway obstruction \>12% following SABA at Visits 1 and 2.

Participant milestones

Participant milestones
Measure
Placebo
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Total
Consistent with the "incomplete-block" design of this study, 6 treatments (placebo and 5 active-dose levels) were administered during only 4 treatment periods. In other words, in this 4-period crossover design, no patient received all 6 treatments and thus some treatments were not received by all of the patients. Therefore, the TOTAL number of participants across ALL the dose levels provides the best metric to follow the consistency of patient flow from one treatment period to the next treatment period.
First Intervention (Visit 3 to Visit 4)
STARTED
17
11
6
19
6
9
68
First Intervention (Visit 3 to Visit 4)
COMPLETED
17
11
6
19
6
9
68
First Intervention (Visit 3 to Visit 4)
NOT COMPLETED
0
0
0
0
0
0
0
First Washout Period of 4-7 Days
STARTED
17
11
6
19
6
9
68
First Washout Period of 4-7 Days
COMPLETED
17
11
6
17
6
9
66
First Washout Period of 4-7 Days
NOT COMPLETED
0
0
0
2
0
0
2
Second Intervention (Visit 5 to Visit 6)
STARTED
18
8
10
14
6
10
66
Second Intervention (Visit 5 to Visit 6)
COMPLETED
18
8
10
14
6
10
66
Second Intervention (Visit 5 to Visit 6)
NOT COMPLETED
0
0
0
0
0
0
0
Second Washout Period of 4-7 Days
STARTED
18
8
10
14
6
10
66
Second Washout Period of 4-7 Days
COMPLETED
18
8
10
14
6
10
66
Second Washout Period of 4-7 Days
NOT COMPLETED
0
0
0
0
0
0
0
Third Intervention (Visit 7 to Visit 8)
STARTED
16
12
6
18
6
8
66
Third Intervention (Visit 7 to Visit 8)
COMPLETED
16
12
6
18
6
8
66
Third Intervention (Visit 7 to Visit 8)
NOT COMPLETED
0
0
0
0
0
0
0
Third Washout Period of 4-7 Days
STARTED
16
12
6
18
6
8
66
Third Washout Period of 4-7 Days
COMPLETED
16
12
6
18
6
8
66
Third Washout Period of 4-7 Days
NOT COMPLETED
0
0
0
0
0
0
0
Fourth Intervention(Visit 9 to Visit 10)
STARTED
16
11
8
15
7
9
66
Fourth Intervention(Visit 9 to Visit 10)
COMPLETED
16
11
8
15
7
8
65
Fourth Intervention(Visit 9 to Visit 10)
NOT COMPLETED
0
0
0
0
0
1
1

Reasons for withdrawal

Reasons for withdrawal
Measure
Placebo
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Total
Consistent with the "incomplete-block" design of this study, 6 treatments (placebo and 5 active-dose levels) were administered during only 4 treatment periods. In other words, in this 4-period crossover design, no patient received all 6 treatments and thus some treatments were not received by all of the patients. Therefore, the TOTAL number of participants across ALL the dose levels provides the best metric to follow the consistency of patient flow from one treatment period to the next treatment period.
First Washout Period of 4-7 Days
Adverse Event
0
0
0
2
0
0
2
Fourth Intervention(Visit 9 to Visit 10)
Patient unable to attend last visit
0
0
0
0
0
1
1

Baseline Characteristics

The Safety and Effectiveness of MK0476 (Montelukast) in Patients With Chronic Asthma (0476-388)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
All Participants
n=68 Participants
Combined participants from all arms.
Age, Continuous
39.1 years
STANDARD_DEVIATION 12.6 • n=5 Participants
Sex: Female, Male
Female
32 Participants
n=5 Participants
Sex: Female, Male
Male
36 Participants
n=5 Participants
FEV1 (Forced Expiratory Volume in One Second)
2.44 L (Liter)
STANDARD_DEVIATION 0.63 • n=5 Participants

PRIMARY outcome

Timeframe: 0 (=baseline) to 4 hours after treatment with montelukast

Population: Full analysis set (FAS) population which included all randomized patients who took at least one dose of post randomization study drug (Montelukast or placebo) at either of the intervention visits and had a measurement for analysis available in at least one treatment period of the cross-over design.

FEV1 measurements taken at 0 (=baseline), 10, 20, 30, 45, 60, 120, 180 and 240 minutes contributed to the average change from baseline over 4 hours. The number of minutes between consecutive measurements was used as weighting factor. The time-weighted average change was standardized by dividing by the time associated with the last measurement.

Outcome measures

Outcome measures
Measure
Placebo
n=67 Participants
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
n=42 Participants
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
n=30 Participants
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
n=66 Participants
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
n=25 Participants
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
n=36 Participants
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Change From Baseline in FEV1 Over 4 Hours
0.03 L (Liter)
Interval -0.03 to 0.1
0.07 L (Liter)
Interval 0.0 to 0.14
0.13 L (Liter)
Interval 0.06 to 0.2
0.10 L (Liter)
Interval 0.04 to 0.16
0.09 L (Liter)
Interval 0.01 to 0.16
0.12 L (Liter)
Interval 0.05 to 0.19

SECONDARY outcome

Timeframe: 4 hours (equals time point at which albuterol or albuterol placebo is administered) to 5.5 hours after treatment with montelukast

Population: Full analysis set (FAS) population which included all randomized patients who took at least one dose of post randomization study drug (albuterol or matching placebo) 4 hours after treatment with montelukast at either of the intervention visits and had a measurement for analysis available in at least one treatment period of the cross-over design.

FEV1 measurements taken at 0 (=baseline), 15, 30, 60, and 90 minutes after albuterol/placebo administration contributed to the average change from baseline over 90 minutes. The number of minutes between consecutive measurements was used as weighting factor. The time-weighted average change was standardized by dividing by the time associated with the last measurement.

Outcome measures

Outcome measures
Measure
Placebo
n=26 Participants
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
n=41 Participants
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Change From Baseline in FEV1 Over 90 Minutes After Albuterol/Placebo Administration
0.34 L
Interval 0.22 to 0.45
0.15 L
Interval 0.06 to 0.24
—
—
—
—

OTHER_PRE_SPECIFIED outcome

Timeframe: 0 (baseline) and 8 hours after treatment with montelukast

Population: Full analysis set (FAS) population which included all randomized patients who took at least one dose of post randomization study drug (Montelukast or placebo) at either of the intervention visits and had a measurement for analysis available in at least one treatment period of the cross-over design.

Average change from baseline in FEV1 at 8 hours after single dose montelukast administration.

Outcome measures

Outcome measures
Measure
Placebo
n=67 Participants
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
n=42 Participants
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
n=30 Participants
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
n=66 Participants
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
n=24 Participants
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
n=35 Participants
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Change From Baseline in FEV1 at 8 Hours After Treatment With Montelukast
0.06 L
Interval -0.02 to 0.14
0.11 L
Interval 0.03 to 0.2
0.13 L
Interval 0.04 to 0.23
0.11 L
Interval 0.03 to 0.19
0.12 L
Interval 0.02 to 0.22
0.14 L
Interval 0.05 to 0.23

OTHER_PRE_SPECIFIED outcome

Timeframe: 0 (baseline) and 24 hours after treatment with montelukast

Population: Full analysis set (FAS) population which included all randomized patients who took at least one dose of post randomization study drug (Montelukast or placebo) at either of the intervention visits and had a measurement for analysis available in at least one treatment period of the cross-over design.

Average change from baseline in FEV1 at 24 hours after single dose montelukast administration.

Outcome measures

Outcome measures
Measure
Placebo
n=67 Participants
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
n=42 Participants
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
n=29 Participants
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
n=66 Participants
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
n=25 Participants
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
n=36 Participants
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Change From Baseline in FEV1 at 24 Hours After Treatment With Montelukast
0.02 L
Interval -0.06 to 0.09
0.05 L
Interval -0.03 to 0.13
0.10 L
Interval 0.01 to 0.19
0.06 L
Interval -0.01 to 0.13
0.08 L
Interval -0.01 to 0.18
0.09 L
Interval 0.01 to 0.18

Adverse Events

Placebo

Serious events: 0 serious events
Other events: 4 other events
Deaths: 0 deaths

25 mcg Montelukast

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

100 mcg Montelukast

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

250 mcg Montelukast

Serious events: 0 serious events
Other events: 3 other events
Deaths: 0 deaths

500 mcg Montelukast

Serious events: 0 serious events
Other events: 3 other events
Deaths: 0 deaths

1000 mcg Montelukast

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Placebo
n=67 participants at risk
Patients are randomized to receive placebo for montelukast on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions, either albuterol or placebo for albuterol is administered 4 hours after placebo for montelukast. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
25 mcg Montelukast
n=41 participants at risk
Patients are randomized to receive montelukast 25 mcg (microgram) on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 25 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
100 mcg Montelukast
n=30 participants at risk
Patients are randomized to receive montelukast 100 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 100 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
250 mcg Montelukast
n=66 participants at risk
Patients are randomized to receive montelukast 250 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 250 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
500 mcg Montelukast
n=25 participants at risk
Patients are randomized to receive montelukast 500 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 500 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
1000 mcg Montelukast
n=36 participants at risk
Patients are randomized to receive montelukast 1000 mcg on either Intervention I (Visit 3), Intervention II (Visit 5), Intervention III (Visit 7) or Intervention IV (Visit 9). At all interventions either albuterol or placebo for albuterol is administered 4 hours after montelukast 1000 mcg. During the washout periods separating the intervention periods, patients received no study treatment (i.e., patients did not receive montelukast or placebo treatment).
Infections and infestations
Gastroenteritis viral
0.00%
0/67
0.00%
0/41
0.00%
0/30
1.5%
1/66
0.00%
0/25
0.00%
0/36
Infections and infestations
Nasopharyngitis
0.00%
0/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
4.0%
1/25
0.00%
0/36
Infections and infestations
Upper respiratory tract infection
1.5%
1/67
0.00%
0/41
0.00%
0/30
1.5%
1/66
0.00%
0/25
0.00%
0/36
Infections and infestations
Viral infection
1.5%
1/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
0.00%
0/25
0.00%
0/36
Infections and infestations
Vulvovaginal mycotic infection
1.5%
1/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
0.00%
0/25
0.00%
0/36
Injury, poisoning and procedural complications
Contusion
0.00%
0/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
4.0%
1/25
0.00%
0/36
Injury, poisoning and procedural complications
Excoriation
0.00%
0/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
4.0%
1/25
0.00%
0/36
Nervous system disorders
Headache
0.00%
0/67
0.00%
0/41
0.00%
0/30
1.5%
1/66
0.00%
0/25
0.00%
0/36
Respiratory, thoracic and mediastinal disorders
Asthma
1.5%
1/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
0.00%
0/25
0.00%
0/36
Respiratory, thoracic and mediastinal disorders
Cough
1.5%
1/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
0.00%
0/25
0.00%
0/36
Respiratory, thoracic and mediastinal disorders
Sinus congestion
0.00%
0/67
2.4%
1/41
0.00%
0/30
0.00%
0/66
0.00%
0/25
0.00%
0/36
Skin and subcutaneous tissue disorders
Eczema
0.00%
0/67
0.00%
0/41
0.00%
0/30
0.00%
0/66
4.0%
1/25
0.00%
0/36

Additional Information

Senior Vice President, Global Clinical Development

Merck Sharp & Dohme Corp.

Phone: 1-800-672-6372

Results disclosure agreements

  • Principal investigator is a sponsor employee Merck agreements may vary with individual investigators, but will not prohibit any investigator from publishing. Merck supports the publication of results from all centers of a multi-center trial but requests that reports based on single-site data not precede the primary publication of the entire clinical trial.
  • Publication restrictions are in place

Restriction type: OTHER