Study of Phenotype and Genotype Correlations in Patients With Contiguous Gene Deletion Syndromes

OBJECTIVES: I. Investigate phenotype and genotype correlations in patients with Smith-Magenis syndrome (SMS) associated with del(17p11.2). II. Clinically evaluate SMS patients with unusual deletions or duplication of proximal 17p. III. Clinically evaluate patients with Williams syndrome with molecular characterization of 7q11.23. IV. Perform clinical studies of Prader-Willi, Angelman, DiGeorge, and Shprintzen syndrome patients with unique […]

Single Dose Pharmacokinetic (PK) Study

The trial is a Phase 1 Single Dose PK Study in Adolescent Subjects with Fragile X syndrome (FXS) or Angelman syndrome (AS). * The primary objective of the study is to evaluate the pharmacokinetics (PK) of OV101 following a single 5 mg dose of OV101 in adolescents with FXS or AS. * Secondary objectives are […]

An Open-Label Study to Evaluate the Long-Term Safety, Tolerability, and Efficacy of OV101 in Individuals With Angelman Syndrome

This open-label study (OV101-18-002) will evaluate the long-term (52 weeks) safety of OV101 in subjects with AS and provide additional OV101 treatment to those subjects who completed Study OV101-15-001 (NCT02996305). Subjects with AS who completed the pharmacokinetic Study OV101-16-001 (NCT03109756) will also be permitted to participate, provided they meet all entry criteria.

Clinical Trial of Levodopa/Carbidopa ( Sinemet) Therapy in Angel Man Syndrome

The purpose of this study is to evaluate the safety and effectiveness (how well a drug works) of Carbidopa/levodopa (Sinemet) in individuals with Angelman syndrome. Sinemet is a medication that helps to raise dopamine levels (a chemical that signals nerve cells) in the brain and central nervous system. There is evidence that dopamine concentrations may […]

A Study to Investigate the Safety, Tolerability, Pharmacokinetics (PK) and Pharmacodynamics (PD) of RO7248824 in Participants With Angelman Syndrome (AS)

This is a phase I, multicenter, non-randomized, adaptive, open-label, multiple ascending, intra-participant, dose-escalation study with a long-term extension (LTE) part and an optional open-label extension (OOE) part. The objective of the study is to investigate the safety, tolerability, PK and PD of RO7248824 administered intrathecally (IT) in participants with AS. Two linked sets of dose […]