We have advanced multiple drug candidates into clinical development. We are presently devoting most of our resources to the development of our two most advanced drug candidates, telotristat etiprate for carcinoid syndrome and sotagliflozin for type 1 and type 2 diabetes. We have also advanced a number of additional compounds into various stages of clinical and preclinical development.
Telotristat etiprate, or LX1032, is an orally-delivered small molecule compound that we are developing for the treatment of carcinoid syndrome. Telotristat etiprate was internally generated by our medicinal chemists and inhibits tryptophan hydroxylase, or TPH, the rate-limiting enzyme for serotonin production found primarily in enterochromaffin, or EC, cells of the gastrointestinal tract. Our scientists found that mice lacking the non-neuronal form of this enzyme, TPH1, have virtually no serotonin in the gastrointestinal tract, but maintain normal levels of serotonin in the brain. Telotristat etiprate was specifically designed to achieve systemic exposure to address disorders such as carcinoid syndrome that require regulation of serotonin levels beyond the EC cells in the gastrointestinal tract without impacting brain serotonin production.
Sotagliflozin, or LX4211, is an orally-delivered small molecule compound that we are developing for the treatment of type 1 and type 2 diabetes mellitus. Sotagliflozin was internally generated by our medicinal chemists and inhibits both sodium-glucose cotransporter type 2, or SGLT2, a transporter responsible for most of the glucose reabsorption performed by the kidney, and sodium-glucose cotransporter type 1, or SGLT1, a transporter responsible for glucose and galactose absorption in the gastrointestinal tract. Our scientists identified mice lacking SGLT1, SGLT2 or both as having potent anti-diabetic phenotypes across multiple measures of glucose control and metabolism, and found that compounds inhibiting both targets had a favorable preclinical profile relative to compounds selective for SGLT2.