Study of the Pathogenesis of Rett Syndrome

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ClinicalTrials.gov Identifier: NCT00004807

Recruitment Status : Completed

First Posted : February 25, 2000

Last Update Posted : June 24, 2005

Sponsor:

Collaborator:

Johns Hopkins University

Information provided by:

Office of Rare Diseases (ORD)

Study Description

Brief Summary:

OBJECTIVES: I. Extend current knowledge of the phenotype and natural history of Rett syndrome (RS).

II. Continue the search for a cytogenetic and/or DNA marker. III. Study the effects of cholinergic drugs based on preliminary evidence for reduced levels of brain acetylcholine, while continuing supportive care to modify seizures, respiratory abnormalities, and motor disturbances, and improve nutrition, behavior, and learning.

IV. Identify targets for future therapeutic interventions, e.g., growth factors, to influence neurologic recovery.

Condition or disease	Intervention/treatment	Phase
Rett Syndrome	Drug: dextromethorphan Drug: topiramate Drug: Donepezil	Not Applicable

Detailed Description:

PROTOCOL OUTLINE: Patients receive a comprehensive clinical evaluation including an ophthalmologic exam; speech, communication, and developmental assessment; nutritional evaluation; neurologic exam; respiratory monitoring; and cytogenetic studies.

Selected patients with malnutrition are given night feedings of Pediasure with Fiber by nasogastric tube. Specific recommendations for feeding techniques and diet are made.

Selected patients with seizures or severe hyperventilation and progressive rigidity are nonrandomly assigned to dextromethorphan or topiramate therapy.

Oral dextromethorphan is maintained 6 months to 1 year; duration of therapy depends on response. Oral topiramate is given for 6 months to 1 year, and Aricept for 6 months to 1 year.

Concurrent anticonvulsants may require dose adjustments while on above protocols. Supportive care for constipation, scoliosis, and weight loss is allowed.

Study Design

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Study Type :	Interventional (Clinical Trial)
Enrollment :	120 participants
Primary Purpose:	Treatment
Study Start Date :	January 1995

Resource links provided by the National Library of Medicine

MedlinePlus Genetics related topics: Rett syndrome

MedlinePlus related topics: Rett Syndrome

Genetic and Rare Diseases Information Center resources: Rett Syndrome

U.S. FDA Resources

Arms and Interventions

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:	up to 45 Years (Child, Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

PROTOCOL ENTRY CRITERIA:

Rett syndrome

Diagnosis confirmed on study

Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00004807

Sponsors and Collaborators

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Johns Hopkins University

Investigators

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Study Chair:	Sakkubai Naidu	Johns Hopkins University

More Information

Publications:

Wenk GL, Naidu S, Casanova MF, Kitt CA, Moser H. Altered neurochemical markers in Rett's syndrome. Neurology. 1991 Nov;41(11):1753-6.

Reiss AL, Faruque F, Naidu S, Abrams M, Beaty T, Bryan RN, Moser H. Neuroanatomy of Rett syndrome: a volumetric imaging study. Ann Neurol. 1993 Aug;34(2):227-34.

Wenk GL, O'Leary M, Nemeroff CB, Bissette G, Moser H, Naidu S. Neurochemical alterations in Rett syndrome. Brain Res Dev Brain Res. 1993 Jul 16;74(1):67-72.

Cooke DW, Naidu S, Plotnick L, Berkovitz GD. Abnormalities of thyroid function and glucose control in subjects with Rett syndrome. Horm Res. 1995;43(6):273-8.

Naidu S, Hyman S, Harris EL, Narayanan V, Johns D, Castora F. Rett syndrome studies of natural history and search for a genetic marker. Neuropediatrics. 1995 Apr;26(2):63-6.

Naidu S, Hyman S, Piazza K, Savedra J, Perman J, Wenk G, Kitt C, Troncoso J, Price D, Cassanova M, et al. The Rett syndrome: progress report on studies at the Kennedy Institute. Brain Dev. 1990;12(1):5-7.

Casanova MF, Naidu S, Goldberg TE, Moser HW, Khoromi S, Kumar A, Kleinman JE, Weinberger DR. Quantitative magnetic resonance imaging in Rett syndrome. J Neuropsychiatry Clin Neurosci. 1991 Winter;3(1):66-72.

Naidu S, Wong DF, Kitt C, Wenk G, Moser HW. Positron emission tomography in the Rett syndrome: clinical, biochemical and pathological correlates. Brain Dev. 1992 May;14 Suppl:S75-9.

Marcus CL, Carroll JL, McColley SA, Loughlin GM, Curtis S, Pyzik P, Naidu S. Polysomnographic characteristics of patients with Rett syndrome. J Pediatr. 1994 Aug;125(2):218-24.

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ClinicalTrials.gov Identifier:	NCT00004807
Other Study ID Numbers:	199/12009 JHUSM-KKI-87021203
First Posted:	February 25, 2000 Key Record Dates
Last Update Posted:	June 24, 2005
Last Verified:	December 1998

Keywords provided by Office of Rare Diseases (ORD):


Rett syndrome neurologic and psychiatric disorders rare disease

Additional relevant MeSH terms:

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Rett Syndrome Syndrome Disease Pathologic Processes Mental Retardation, X-Linked Intellectual Disability Neurobehavioral Manifestations Neurologic Manifestations Nervous System Diseases Genetic Diseases, X-Linked Genetic Diseases, Inborn Heredodegenerative Disorders, Nervous System Topiramate Dextromethorphan	Donepezil Cholinesterase Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Cholinergic Agents Neurotransmitter Agents Physiological Effects of Drugs Nootropic Agents Anticonvulsants Hypoglycemic Agents Antitussive Agents Respiratory System Agents Excitatory Amino Acid Antagonists Excitatory Amino Acid Agents

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