Clinical Trial: RISCA : Prospective Study of Individuals at Risk for SCA1, SCA2, SCA3, SCA6, SCA7

Study Status: Completed
Recruit Status: Unknown status
Study Type: Observational

Official Title: Prospective Study of Individuals at Risk for Spinocerebellar Ataxia Type 1, Type 2, Type 3, Type 6 and Type 7 (SCA1, SCA2, SCA3, SCA6, SCA7)

Brief Summary:

The spinocerebellar ataxias (SCAs) are a clinically and genetically heterogeneous group of autosomal dominantly inherited progressive ataxia disorders. It is estimated that there are 30,000 individuals in the European Community that directly descend from individuals affected by a SCA disorder and thus carry a 50% risk of having inherited an SCA mutation. These at risk individuals provide a unique research opportunity to prospectively study the presymptomatic phase of SCA disorders and to identify the earliest and most sensitive clinical signs and biological markers that herald the onset of the illness. This information is of critical importance for the development of future therapeutic interventions aimed at postponing the clinical onset of ataxia.

We therefore propose to perform a prospective observational study of individuals at risk for the most common SCA disorders, SCA1, SCA2, SCA3 and SCA6 (RISCA). It is our aim to answer the following questions: (1) What is the incidence of disease manifestation in mutation carriers? (2) Which clinical signs precede the onset of manifest ataxia in SCA1, SCA2, SCA3 and SCA6? (3) What are the prevalence and incidence of preceding signs? (4) Are the prevalence and incidence of preceding signs affected by genotype, gender, age, estimated time until disease manifestation and repeat length? (5) Does the presence of certain preceding signs predict the manifestation of ataxia ? (6) Are there MRI alterations that precede the onset of ataxia? It is planned to enroll 480 study participants and to follow them at regular intervals over six years. At each visit, study participants are asked in a structured interview for a number of predefined clinical signs that potentially precede the onset of ataxia. In addition, the following self-assessment scales will be applied: Pittsburgh Sleep Quality Index (PSQI), Diagnostic Criteria for Restless Legs S

Detailed Summary:
Sponsor: Institut National de la Santé Et de la Recherche Médicale, France

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Original Primary Outcome:

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Original Secondary Outcome:

Information By: Institut National de la Santé Et de la Recherche Médicale, France

Dates:
Date Received: December 21, 2009
Date Started: May 2009
Date Completion:
Last Updated: January 27, 2012
Last Verified: January 2012