Lexicon Pharmaceuticals announced that it is progressing into the placebo-controlled portion of its Phase 2 clinical trial of LX4211 in patients with type 1 diabetes, having successfully completed the open-label, pioneer portion of the trial. LX4211 is an investigational, oral, dual inhibitor of sodium glucose transporters 1 and 2, or SGLT1 and SGLT2. The pioneer phase of the study was designed to gain important initial information regarding the safety of co-administration of LX4211 with insulin in this, the first test of dual inhibition of SGLT1 and SGLT2 in patients with insulin-dependent type 1 diabetes. The successful conclusion of the 28-day pioneer group enables the initiation of the placebo-controlled expansion phase of the study to commence in up to 30 patients with type 1 diabetes. Based on the results observed in the pioneer group, Lexicon has identified the 400 mg once daily dose of LX4211 as the appropriate treatment for the expansion phase of the trial.