Masitinib in Combination With Methotrexate, in Treatment of Patients With Active Rheumatoid Arthritis

A 12-week With Possible Extension, Prospective, Multicenter, Randomized, Open Label, Uncontrolled, 2-parallel Group, Phase II Study to Compare Efficacy and Safety of AB1010 at 3 and 6 mg/kg/Day in Combination With Methotrexate, in Treatment of Patients With Active Rheumatoid Arthritis With Inadequate Response to 1. Methotrexate or to 2. Any DMARD Including Anti TNF Alpha if Patients Previously Failed Methotrexate or to 3. Methotrexate in Combination With Any DMARD Including Anti TNF Alpha

A 12-week with possible extension, phase II study to compare efficacy and safety of masitinib at 3 and 6 mg/kg/day in combination with methotrexate, in treatment of patients with active rheumatoid arthritis refractory to standard treatments.

Inclusion Criteria:

1. Disease duration of at least 6 months Meet American College of Rheumatology (ACR) criteria for RA.
2. ACR functional class I-III
3. Have active RA
4. Failed (defined as active RA with stable dose during 3 months) i. methotrexate or ii. any DMARD including anti TNF alpha if patients previously failed methotrexate or iii. methotrexate in combination with any DMARD including anti TNF alpha

Exclusion Criteria:

1. Patient had a major surgery within 2 weeks prior to study entry.
2. Life expectancy < 6 months.