Home › Metabolic Disorders › NCT00359684
Use of Cysteamine in the Treatment of Cystinosis
Who can join
1 Week – 115 Years · All sexes
Full eligibility criteria
* INCLUSION CRITERIA: Diagnosis of cystinosis, whether classical or one of the variants with later onset or no renal complications. Patients will be diagnosed as having cystinosis based upon a leucocyte cystine content greater than 1 nmol half-cystine/mg protein (normal, less than 0.2) and a typical clinical course. EXCLUSION CRITERIA: Inability to travel to the NIH. Age less than one week. Nonviable neonates and neonates of uncertain viability will be excluded.
About the study
Cystinosis is an inherited disease resulting in poor growth and kidney failure. There is no known cure for cystinosis, although kidney transplantation may help the renal failure and prolong survival. Both the kidney damage and growth failure are thought to be due to the accumulation of the amino acid cystine within the cells of the body. The cystine storage later damages other organs besides the kidneys, including the thyroid gland, pancreas, eyes, and muscle.
The drug cysteamine (Cystagon; ProCysBi) is an oral medication given to patients with cystinosis prior to kidney transplantation. The drug works by reducing the level of cystine in the white blood cells and muscle tissue. The drug may also decrease levels of cystine in the kidneys and other tissues.
This study has several goals:
1. Long-term surveillance of cysteamine treated patients. 2. Detection of new non-kidney complications of cystinosis. 3. Maintenance of a patient population for genetic testing (mutational analysis) of the cystinosis gene.\<TAB\>
What is being tested
- Cysteamine (drug)
Sponsor: National Human Genome Research Institute (NHGRI) · Participants: 330 · Started: Jan 4, 1979
Contact the study team
- William A Gahl, M.D. · Phone: (301) 402-2739
Official record on ClinicalTrials.gov — NCT00359684
Locations in the U.S.
| Maryland | National Institutes of Health Clinical Center, Bethesda |
Conditions
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.