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Clinical Trial Summary

The purpose of this study is to evaluate the safety and tolerability of memantine in pediatric (6-12 years old) patients with autism, Asperger's Disorder, or Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) and to identify responders for participation in a follow-up randomized withdrawal study.


Clinical Trial Description

This 50-week multicenter and multinational clinical study is comprised of a 2-week screening period, a 6-week open-label dose-titration period followed by a variable duration maintenance period (up to 42 weeks).

Patients with at least 12 weeks of investigational product exposure who meet the protocol specified responder criterion at two consecutive visits separated by at least two weeks are eligible to transition to a randomized withdrawal study. A responder is defined as a patient who demonstrates at least a 10 point improvement (reduction in score) in the Social Responsiveness Scale (SRS) total raw score relative to the Visit 1 total raw score.

Weight based dose limits were selected in this study to ensure that exposure in terms of area under the curve (AUC) was less than the predefined limit of 2100 ng·h/mL which represents a 10-fold lower exposure than observed at the No observed adverse effect level (NOAEL) of 15 mg/kg/day in juvenile rats.

The weight-based dose limits in this study were as follows:

- Group A: ≥ 60 kg; maximum 15 mg/day

- Group B: 40-59 kg; maximum 9 mg/day

- Group C: 20-39 kg; maximum 6 mg/day

- Group D: < 20 kg; maximum 3 mg/day ;


Study Design

Endpoint Classification: Safety Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT01592786
Study type Interventional
Source Forest Laboratories
Contact
Status Completed
Phase Phase 2
Start date June 2012
Completion date August 2013

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