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Safety/Effectiveness Study of Cysteamine Bitartrate Delayed-release Capsules (RP103) in Cysteamine Treatment Naive Patients With Cystinosis

NCT01744782 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2024-12-27

Study results available
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Summary

This was a long-term, open-label study of the safety, tolerability and effectiveness of RP103 in cystinosis patients who were naïve to any form of cysteamine treatment. Participants received RP103 treatment for at least 12 months. U.S. participants transitioned to the commercially approved drug PROCYSBI®. In Brazil, after at least 12 months of study participation and upon approval by the Brazilian regulatory authorities, participants were eligible to transition to a post-study drug supply program, and continue to receive the drug at no personal cost.

Conditions

  • Cystinosis

Interventions

DRUG

RP103

Cysteamine Bitartrate Delayed-release Capsules (RP103) were administered twice daily, orally or via gastrostomy tube (G-tube), after a 2-hour fast. The starting dose was one-quarter of the RP103 targeted maintenance dose based on age, weight, and body surface area. The recommended targeted maintenance dose for children up to 6 years old was 1 gram/m²/day, in 2 divided doses given Q12H. The dose was gradually escalated, in 10% steps, based on monitoring of WBC cystine levels 30 minutes after the morning RP103 dose collected every 2 weeks, until the participant's WBC cystine level was \<1 nmol ½ cystine/mg protein.

Sponsors & Collaborators

Principal Investigators

  • MD · Amgen

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Max Age
6 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-12-20
Primary Completion
2016-12-13
Completion
2016-12-13
FDA Drug
Yes

Countries

  • United States
  • Brazil

Study Locations

More Related Trials

Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01744782 on ClinicalTrials.gov