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AGIX-4207 Phase 2 Study in Rheumatoid Arthritis Does Not Meet Primary Endpoint
"Although we are disappointed with the results of the OSCAR study, we believe these results are compound-specific and that our v-protectant(TM) technology still offers great promise of yielding novel therapeutics to treat rheumatoid arthritis," commented Rob Scott, M.D., Senior Vice President of Clinical Development and Regulatory Affairs and Chief Medical Officer at AtheroGenics. "AtheroGenics continues to have an active program aimed at investigating second generation v-protectants(TM) in rheumatoid arthritis. We have identified other compounds with enhanced therapeutic potential within our industry-standard rheumatoid arthritis preclinical models and will be aggressively working to select another candidate to move into formal preclinical development."
The Phase II double-blinded, placebo-controlled, 12-week study involved 275 patients in multiple European centers with mild-to-severe rheumatoid arthritis. Study subjects were randomized into four groups receiving either placebo or one of three single daily oral doses of AGIX-4207: 75 mg, 150 mg or 225 mg. Study subjects who were previously treated with biological Disease Modifying Anti-Rheumatic Drugs (DMARDs) were not enrolled in the study nor were subjects who were taking non-biological DMARDs at the commencement of the study. Study subjects on Non-Steroidal Anti-Inflammatory Drugs (NSAIDS) including aspirin, COX-2 inhibitors and analgesics were allowed to remain on their drug regimens.
The primary endpoint of the study was improvement in ACR 20 scores, as measured after 12 weeks of treatment with AGIX-4207. An ACR 20 response is a preset standard from the American College of Rheumatology, which requires a greater than 20 percent reduction in swollen joint count, in tender joint count and in three out of five of the following: patient's assessment of pain, patient's assessment of disease activity, investigator's assessment of disease activity, acute phase reactant (ESR or CRP) and patient's assessment of functional status. In the analysis of all randomized patients, 25 percent of placebo-treated patients achieved an ACR 20 response at Week 12 compared with 20 percent at 75 mg, 15 percent at 150 mg, and 23 percent at 225 mg of AGIX- 4207-treated patients. The drug was generally well tolerated, and serious adverse events were similar to placebo.
Source: AtheroGenics, Inc.