The primary objective of this study is to evaluate whether montelukast can reduce the severity of gastrointestinal (GI) events, measured by the Gastrointestinal Symptom Rating Scale (GSRS), after oral administration of dimethyl fumarate (DMF) in participants with relapsing forms of Multiple Sclerosis (MS). The secondary objectives of this study are as follows: To evaluate whether montelukast after oral administration of DMF in participants with relapsing forms of MS decreases discontinuations due to GI events and reduces the number of participants taking symptomatic therapies for GI events; To investigate the effect of montelukast on the incidence of flushing events after oral administration of 240 mg DMF in participants with relapsing forms of MS.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
102
Starting dose of 120 mg twice daily orally After 7 days, maintenance dose of 240 mg twice daily orally
As described in the treatment arm
Matched placebo
Research Site
Jonesboro, Arkansas, United States
Research Site
Carmichael, California, United States
Research Site
La Jolla, California, United States
Research Site
La Mesa, California, United States
Research Site
Pomona, California, United States
Research Site
Percentage of Participants With a Worsening in Severity of Gastrointestinal (GI) Adverse Events (AEs) on the GSRS From Day 0 to Day 10
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). Worsening in severity was defined as a positive average change from baseline (Day 0) to Day 10 in the GSRS score. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose. Average change is the sum of changes from baseline in GSRS score over the first 10 days divided by the total of days with a GSRS score.
Time frame: Baseline (Day 0), Day 10 (10 days after Day 0)
Average Change From Baseline in GSRS Overall Score at Day 1 to Day 10
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). This endpoint reports the average change from baseline (Day 0) at Day 1 to Day 10. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose. A negative change from baseline indicates that symptoms decreased.
Time frame: Baseline (Day 0), Day 1 (1 day after Day 0), Day 10 (10 days after Day 0)
Average Change From Baseline in GSRS Overall Score at Day 1 to Week 10
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). This endpoint reports the average change from baseline (Day 0) between Day 1 and Week 10. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose. A negative change from baseline indicates that symptoms decreased.
Time frame: Baseline (Day 0), Day 1 (1 day after Day 0), Week 10 (10 weeks after Day 0)
Time to First Worsening From Baseline in GSRS Overall Score at Day 1 to Day 10
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose.. Time to the first worsening was defined as the number of days from Day 1 to the first date with a worsened GSRS score. Censoring occurred at Day 10.
Time frame: Baseline (Day 0), Day 1 (1 day after Day 0) to Day 10 (10 days after Day 0)
Time to Recovery to Baseline GSRS Score From Last Occurrence of Worst GSRS Score at Day 1 to Week 8
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). Recovery was defined as a GSRS score less than or equal to the Day 0 score. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose. Time to recovery was defined as the date of recovery minus the date of the last occurrence of the worst score.
Time frame: Baseline (Day 0), Day 1 (1 Day after Day 0) to Week 8 (8 weeks after Day 0)
Average Change From Baseline in GSRS Overall Score at Day 1 to Weeks 1 to 8
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). This endpoint reports the average change from baseline (Day 0) between Day 1 and the specified time point. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 was the last day when the threshold was reached, prior to the first dose. A negative change from baseline indicates that symptoms decreased.
Time frame: Baseline (Day 0), Day 1 (1 Day after Day 0), Weeks 1 to 8 (1-8 weeks after Day 0)
Average Change From Baseline in GSRS Overall Score at Day 0 to 72 Hours From the Initiation of Randomized Study Treatment
The GSRS is a weekly recall scale that was modified for daily recall. The 15-question GSRS is summarized with a 7-point Likert scale: no discomfort at all=0; minor discomfort=1; mild discomfort=2; moderate discomfort=3; moderately severe discomfort=4; severe discomfort=5 and very severe discomfort=6. The overall GSRS score is a mean score that ranges from 0 (no symptoms) to 6 (the worst possible symptoms). This endpoint reports the average change from baseline (Day 0) at Day 1 to Day 3. Day 0: the day before a participant started randomized treatment (if the GI threshold was reached 1 day previously) or the first day of randomized treatment if the threshold was reached that day. If the threshold was reached \>1 day previously, then Day 0 is the last day when the threshold was reached, prior to the first dose. A negative change from baseline indicates that symptoms decreased.
Time frame: Baseline (Day 0), Day 3 (72 hours after Day 0)
Percentage of Participants Who Required GI Symptomatic Therapy During the Study
Symptomatic therapies were not permitted during the first 10 days after starting montelukast or placebo. From Day 10 onward, participants were allowed to use the following symptomatic therapies to treat DMF-related GI events: bismuth subsalicylate, simethicone, calcium carbonate, loperamide, proton-pump inhibitors and ondansetron.
Time frame: Day 10 to Week 10
Percentage of Participants Who Discontinued DMF Therapy Due to GI-Related Adverse Events (AEs) From Day 0 to Week 10
An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and that did not necessarily have a causal relationship with this treatment. An AE could therefore have been any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not related to the medicinal product. Participants used an electronic diary to record GI-related events. GI-related AEs included diarrhea, nausea, upper abdominal pain, abdominal pain, and dyspepsia.
Time frame: Day 0 to Week 10
Percentage of Participants Who Experienced AEs Related to Flushing
An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and that did not necessarily have a causal relationship with this treatment. An AE could therefore have been any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product, whether or not related to the medicinal product. Flushing-related AEs included flushing and hot flush. Only events with an onset date on or after the date of first DMF dose (up to 27 days before Day 0) are presented. This includes events present before and subsequently worsened after the first dose of DMF.
Time frame: Day of first DMF dose (up to 27 days before Day 0) to Week 10
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