Conditions: Anemia
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 65
Healthy volunteers: no

Brief summary:
This study will evaluate the efficacy and safety of different subcutaneous starting doses and dosing frequencies of Mircera in anemic patients with chronic kidney disease not yet on dialysis. The anticipated time on study treatment is 3-12 months and the target sample size is \<100 individuals.

Detailed description:

Arms:
arm 1: Eligible participants will be receiving RO0503821 (methoxy polyethylene glycol-epoetin beta \[Mircera\]) at a dose of 0.15 microgram per kilogram (mcg/kg) subcutaneously (SC) once every week to complete the dosage of 0.9 mcg/kg up to 6 weeks (Week 1 to Week 6). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 2: Eligible participants will be receiving RO0503821 at a dose of 0.3 mcg/kg SC once every week to complete the dosage of 1.8 mcg/kg up to 6 weeks (Week 7 to Week 12). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 3: Eligible participants will be receiving RO0503821 at a dose of 0.6 mcg/kg SC once every week, to complete the dosage of 3.6 mcg/kg up to 6 weeks (Week 13 to Week 18). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 4: Eligible participants will be receiving RO0503821 at a dose of 0.3 mcg/kg SC once every two week, to complete the dosage of 0.9 mcg/kg up to 6 weeks (Week 1 to Week 6). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 5: Eligible participants will be receiving RO0503821 at a dose of 0.6 mcg/kg SC once every two week, to complete the dosage of 1.8 mcg/kg up to 6 weeks (Week 7 to Week 12). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 6: Eligible participants will be receiving RO0503821 at a dose of 1.2 mcg/kg SC once every two week, to complete the dosage of 3.6 mcg/kg up to 6 weeks (Week 13 to Week 18). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 7: Eligible participants will be receiving RO0503821 at a dose of 0.45 mcg/kg SC once every three week, to complete the dosage of 0.9 mcg/kg up to 6 weeks (Week 1 to Week 6). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 8: Eligible participants will be receiving RO0503821 at a dose of 0.9 mcg/kg SC once every three week, to complete the dosage of 1.8 mcg/kg up to 6 weeks (Week 7 to Week 12). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period. arm 9: Eligible participants will be receiving RO0503821 at a dose of 1.8 mcg/kg SC once every three week, to complete the dosage of 3.6 mcg/kg up to 6 weeks (Week 13 to Week 18). Participants will be followed-up for one week post the treatment period. During extension Years 1 and 2, the participants will remain at the same frequency of administration as that of core treatment period.

Interventions: intervention 1: methoxy polyethylene glycol-epoetin beta [Mircera]
Intervention descriptions: intervention 1: Differing doses and frequencies of sc administration

Protocol document: