Skip to content

Phase II Study of Ribose, Uridine, and Thymidine for a Complex Syndrome Involving Excessive 5'-Nucleotidase Activity

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00004658
Enrollment
Unknown
Registered
2000-02-25
Start date
1995-03-31
Completion date
Unknown
Last updated
2005-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

5'-Nucleotidase Syndrome

Keywords

5'-nucleotidase syndrome, inborn errors of metabolism, rare disease

Brief summary

OBJECTIVES: I. Evaluate the efficacy of oral ribose in patients with a complex 5'-nucleotidase syndrome who have not received uridine (UR) and thymidine (TDR). II. Evaluate the efficacy of UR/oral ribose and UR/TDR. III. Evaluate the efficacy of oral ribose given in combination with UR/TDR.

Detailed description

PROTOCOL OUTLINE: Newly identified patients receive ribose daily for 8 weeks. Patients who improve continue therapy. If improvement then reaches a plateau, uridine (UR) and thymidine (TDR) are added to the regimen. Patients who receive no benefit after 8 weeks of ribose are treated with UR/TDR. Patients who improve after 8 weeks of this combination continue therapy. Ribose is added to the treatment regimen for patients on UR/TDR at entry. At maximal improvement, TDR and UR are sequentially tapered.

Interventions

Sponsors

University of California, San Diego
CollaboratorOTHER
National Center for Research Resources (NCRR)
Lead SponsorNIH

Study design

Primary purpose
TREATMENT

Eligibility

Sex/Gender
ALL
Age
0 Years to 21 Years
Healthy volunteers
No

Inclusion criteria

PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Complex syndrome with excessive skin fibroblast 5'-nucleotidase activity characterized by: Recurrent infection Seizure disorder Speech impairment Attention deficit and behavior problems --Prior/Concurrent Therapy-- Concurrent uridine and thymidine therapy allowed --Patient Characteristics-- Other: No pregnant women

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026