GSK Type 1 Diabetes Drug, Otelixizumab, Fails in Phase 3 Study

GlaxoSmithKline and Tolerx, Inc’s Investigatinal immunotherapy, Otelixizumab,  for type 1 diabetes failed to meet primary end point in the Phase 3 DEFEND-1 study. Otelixizumab, an investigational humanized anti-CD3 monoclonal antibody, did not meet the primary efficacy endpoint of change in C-peptide at month 12 in patients with new-onset autoimmune type 1 diabetes.

Following preliminary review of the data, no new or unexpected treatment-related safety concerns have emerged during the DEFEND-1 study. Study investigators and regulatory agencies have been notified of the DEFEND-1 study outcome.

GSK will continue to explore additional dosing regimens to inform decisions about the future clinical development program for otelixizumab. New recruitment and dosing in the DEFEND-2 study, the ongoing confirmatory Phase III study with a design similar to DEFEND-1, has been suspended pending review of the DEFEND-1 results.

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