Conditions: Chronic Primary Insomnia
Keywords: insomnia elderly sleeplessness
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 112
Healthy volunteers: no

Brief summary:
A 2-night polysomnography / 5-way cross-over study to evaluate the effect, safety and tolerability of oral administration of almorexant (ACT 078573) in elderly subjects with primary insomnia.

Detailed description:

Arms:
arm 1: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 2: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 3: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 4: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 5: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 6: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 7: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 8: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 9: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo arm 10: 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo

Interventions: intervention 1: ACT-078573 oral capsules at 25 and 100 mg and matching placebo intervention 2: ACT-078573 and matching placebo intervention 3: ACT-078573 and matching placebo intervention 4: ACT-078573 and matching placebo intervention 5: ACT-078573 and matching placebo intervention 6: ACT-078573 and matching placebo intervention 7: ACT-078573 and matching placebo intervention 8: ACT-078573 and matching placebo intervention 9: ACT-078573 and matching placebo intervention 10: ACT-078573 and matching placebo
Intervention descriptions: intervention 1: 5-period, 5-treatment crossover: sequences: ABECD, BCADE, CDBEA, DECAB, EADBC DCEBA, EDACB, AEBDC, BACED, CBDAE Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 2: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 3: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 4: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 5: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 6: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 7: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 8: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 9: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo intervention 10: ACT-078573 oral capsules at 25 and 100 mg and matching placebo 5-period, 5-treatment crossover Where A = 200mg, B = 100 mg, C = 50 mg, D = 25mg, E = Placebo

Protocol document: