Methyl CpG Binding Protein 2 (MECP2) Duplication Syndrome Clinical Trial
Official title:
A Phase 1-2, Double-Blind, Sham-Controlled Multiple Ascending Dose Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Intrathecally-Administered ION440 in Patients With MECP2 Duplication Syndrome
The primary purpose of this study is to evaluate the safety and tolerability of ION440.
This is a phase 1-2 randomized, double-blind, sham-controlled, multiple-ascending dose (MAD) study to evaluate ION440 in pediatric and adult participants with MECP2 Duplication Syndrome (MDS) and will be conducted in two parts. During Part 1 (MAD) (36 weeks), participants will be randomized in a 3:1 ratio to receive ION440 or sham. Individuals who complete Part 1 may enter Part 2, an open label long-term extension study (LTE), where they will receive ION440 for up to approximately 156 weeks. Multiple dose cohorts (Dose A, Dose B, and Dose C) will be evaluated in the study. All dosing cohorts will be further subdivided by age. Sub cohort A will include participants 8 years of age and older and sub cohort B will include participants 2 through 7 years of age. Dosing cohorts will be enrolled sequentially with sub cohort A initiating prior to sub cohort B. ;