Study in Subjects With Rheumatoid Arthritis to Evaluate the Effect of a Single Dose of Olokizumab on the Pharmacokinetics of Substrates for CYP1A2, CYP2C9, CYP2C19 and CYP3A4

This was a Phase 1, open-label, 3-period, single-sequence, crossover study in subjects with RA with increased C-reactive protein (CRP).

Approximately 15 eligible subjects were planned to be enrolled at approximately 3 study centers to have at least 12 evaluable subjects completing the study. However, if necessary, additional subjects could be dosed to obtain the 12 evaluable subjects required.

There was a 35-day Screening Period, followed by a 29-day study duration: eligible patients were administered a cocktail of 4 substrates alone with following 7 days PK-sampling (Period 1); a single subcutaneous dose of 128 mg OKZ was administered (Period 2) approximately 2 weeks prior to the second administration of the cocktail with following 7-days PK-sampling (Period 3). After completion of the Period 3 patients were followed-up for 19 weeks (133 days) for safety evaluations.

Overall duration of the study was approximately 200 days (6 and a half months).