This was a 24-week, randomized, multicenter, open-label, controlled study. Participants were randomized into one of two treatment arms; oral administration of cinacalcet daily in addition to standard of care treatment, or standard of care alone. Randomization was stratified by age group (6 to \< 12 and 12 to \< 18 years of age). All participants received standard of care which could include therapy with Vitamin D sterols, calcium supplementation, and phosphate binders.
Participants in both treatment groups who completed the 20-week treatment period and those who ended the study due to study closure were eligible to enroll in an open-label extension study (20140159; NCT02341417) for further safety follow-up.
