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This is a Phase 2a, proof-of concept, 2-way, 2-period crossover, double-blind study to evaluate the safety and efficacy of INP105 as an acute treatment versus placebo in adolescents and young adults with autism spectrum disorder (ASD) experiencing agitation. Approximately 32 ASD patients who are currently being treated for agitation/aggression at several inpatient units specializing in behavioral treatment will be enrolled.
INP105 is a novel combination product that sprays a powder formulation of olanzapine to the upper nasal space. An earlier formulation showed a similar extent, but faster rate of absorption compared to the approved intramuscular product. In this study, 5 mg of olanzapine or placebo will be delivered nasally by this combination product to moderately or severely agitated participants.
Participants will undergo several screening assessments, including observation session(s) of episode(s) of agitation resulting from a frustration task (eg, a non-preferred activity). At least one observation session must result in a documented moderate to severe agitation episode prior to the participant being eligible to enroll in the study and be randomized to treatment.
The study will be conducted in 2 phases. A pilot phase will initially enroll at least 6 participants, who will receive both 5 mg INP105 (5 mg olanzapine) and placebo in random order, in the same crossover design as later participants. Participants will be dosed during a documented moderate to severe episode of agitation. Once 6 participants have completed both dosing periods and have at least 48 hours of post-dose safety data collected, a safety and preliminary efficacy analysis will be performed by an independent unblinded statistical group, and a summary report forwarded to a sponsor-led Data and Safety Review Committee (DSRC), who will remain blinded. Enrollment will be paused during the DSRC pilot phase safety and preliminary efficacy results review. Absent any concerning safety signals, the second phase will enroll all remaining participants. The DSRC may suggest revisions to the protocol, and the protocol amended and approved as necessary, prior to further participants being enrolled.
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8 participants in 2 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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