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Study to Assess Safety and Efficacy of Fingolimod in Children With Rett Syndrome (FINGORETT)

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
University Hospital, Basel, Switzerland Identifier:
First received: August 27, 2013
Last updated: April 5, 2017
Last verified: April 2017
The Trial Objective is to assess safety and efficacy of oral fingolimod (FTY720) in children older than 6 years with Rett Syndrome. So far there is no established treatment for children with Rett Syndrome. Therefore a positive result in terms of safety and first indications of efficacy would path the way to a phase II clinical study with more patients to further test the hypothesis that fingolimod treatment may slow down the regression of motor and language skills.

Condition Intervention Phase
Rett's Syndrome
Drug: fingolimod (FTY720)
Phase 1
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: No masking
Primary Purpose: Treatment
Official Title: A Phase 1 Clinical Study to Assess Safety and Efficacy of Oral Fingolimod (FTY720) in Children With Rett Syndrome.

Resource links provided by NLM:

Further study details as provided by University Hospital, Basel, Switzerland:

Primary Outcome Measures:
  • Levels of Brain derived neurotrophic factor (BDNF) in blood and cerebrospinal fluid before and under treatment [ Time Frame: change of BDNF measured at Baseline, at first dose, at 6 and at 12 months after start of treatment. ]

Enrollment: 6
Study Start Date: August 2013
Estimated Study Completion Date: July 2018
Estimated Primary Completion Date: March 2018 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Rett syndrome, fingolimod (FTY720)
0.5 or 0.25mg Fingolimod daily
Drug: fingolimod (FTY720)
0.5 or 0.25 mg fingolimod orally daily for each of 6 patients with rett syndrome for 12 months
Other Name: gilenya, fingolimod, FTY720

Detailed Description:

Rett syndrome is a neurodevelopmental disorder characterized by normal early psychomotor development followed by the loss of psychomotor and acquired purposeful hand skills and the onset of stereotyped movement of the hands and gait disturbance. The gene was discovered in 1999 and the disease was found to be caused by a mutation of the methyl-CpGbinding protein 2 (MeCP2). However, in many ways this clinically peculiar condition remains a mystery, with no clear correlations between the gene mutation and abnormal biological markers, neuropathology and/or unique clinical symptoms and signs.

Rett syndrome is an X-linked (Xq28) dominant postnatal severe neurodevelopmental disorder which is the second most common cause for genetic mental retardation in girls and the first pervasive disorder with a known genetic basis. Its incidence is between 1/10,000-15000 live births. The classical variant is characterized by apparently normal development for the first 6-18 months accompanied usually with early deceleration of head growth, followed by period of regression of motor and language skills, hand stereotypes, seizures, autonomic dysfunction and other neurological and related symptoms.

Repeated observations and experiments of the mouse models in several laboratories led to the appreciation of the role of BDNF in the disease pathophysiology. BDNF is a neurotrophic factor playing a major role in neurogenesis, neuronal survival, differentiation, and maturation during early development as well as in synaptic function and plasticity throughout life. Abnormalities in BDNF homeostasis are believed to contribute to the neurological phenotype and pathophysiology in part of the symptoms in methyl-CpG binding protein 2(Mecp2) null mice that show progressive deficits in its expression during the symptomatic stage.

FTY720 (Gilenya) is an orally active modulator of four of the five sphingosine-1 phosphate(S1P) receptors. FTY720 acts as 'super agonist' on the S1P receptor on thymocytes and lymphocytes, inducing uncoupling/internalization of that receptor.

A local study group (Yves-Alain Barde) found that FTY720 increases the levels of brain derived neurotrophic factor and improves symptoms of mice lacking MeCP2. In addition the volume of the striatum seemed to be higher (4 week old mice were treated in 4 days intervals with 0.1mg/kg body weight intraperitoneally).

Based on these results we intend to perform a phase I clinical,study to assess safety and efficacy of oral fingolimod (FTY720) in children with Rett Syndrome. Children will be included if being older than 6 years of age, fulfilling diagnostic criteria of Rett Syndrome in clinical Stages II -IV and having parents that do agree.


Ages Eligible for Study:   6 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Children fulfilling diagnostic criteria (2001, Hagberg B et al. Eur. J. Paediatr. Neurol. 2002) of Rett Syndrome
  • Stages II -IV Hagberg/ Witt-Engerström (Hagberg B, Witt-Engerström I. Am J Med Genet 1986, Hagberg B. Ment Retard Dev Disabil Res Rev 2002)
  • Patients older than 6 years old (have had their 6th birthday)
  • Written informed consent of parents/ of legal guardian
  • Negative testing for pregnancy
  • Positive confirmation of a MECP2 mutation

Exclusion Criteria:

  • Any uncertainty about diagnosis of Rett Syndrome
  • Patients younger than 6 years old (have not yet had their 6thbirthday)
  • Additional associated neurological diseases such as a brain malformation
  • Patient <15kg body weight at timepoint of screening
  • Patients with negative varicella-zoster virus immunoglobulin G (IgG) antibodies
  • Pregnancy or breastfeeding for girls in childbearing potential age
  Contacts and Locations
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Please refer to this study by its identifier: NCT02061137

Department of Neuropediatrics - University Children's Hospital
Basel, Switzerland, 4056
Sponsors and Collaborators
University Hospital, Basel, Switzerland
Principal Investigator: Ludwig Kappos, Prof. Department of Neurology - University Hospital Basel - Switzerland
  More Information

Responsible Party: University Hospital, Basel, Switzerland Identifier: NCT02061137     History of Changes
Other Study ID Numbers: CFTY720D2201T
Study First Received: August 27, 2013
Last Updated: April 5, 2017

Keywords provided by University Hospital, Basel, Switzerland:
Rett Syndrome (Mecp2 positive)
Fingolimod (FTY 720)
Brain Atrophy

Additional relevant MeSH terms:
Rett Syndrome
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
Fingolimod Hydrochloride
Immunosuppressive Agents
Immunologic Factors
Physiological Effects of Drugs processed this record on April 24, 2017