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Emerging diabetes drugs in early development

  January, 30 2006 11:13
your information resource in human molecular genetics
Barcelona, January 30, 2006

The complexity of glucose metabolism and the number of cellular processes affected by diabetes provides ample space for new drug targets and for first-in-class molecules. Some of them have reached or are close to early clinical development in type 2 diabetes. Roche pioneered and leads the field of glucokinase activators with a phase I compound. Karo Bio has a first-in-class hepatic glucocorticoid receptor antagonist which is in preclinical development. Bayer is about to enter phase I in the first half of this year with Bay 76-7171 which has an undisclosed novel mechanism of action. Sankyo and Metabasis reached clinical proof of concept with its first-in-class fructose 1,6-bisphosphatase inhibitor. Leaders in the arena of glycogen phsophorylase inhibitors are Pfizer and Sanofi-Aventis with clinical stage projects. Isis is ahead in the field of protein tyrosine phosphatase 1B inhibitors with its 2nd generation antisense project. These results were found in a search conducted by La Merie Business Intelligence. The results were published in the January 30 issue of R&D Pipeline News, edited by La Merie Business Intelligence.

Glucokinase activators (GKA) enhance glucose-stimulated insulin release from pancreatic islet cells and glucose disposition by the liver, thus reducing blood glucose and reducing weight as shown by Innodia’s ID1101 in phase I. The compound had an excellent safety profile and now serves as an anti-obesity drug candidate. The stimulation of insulin secretion by GKAs is glucose-dependent which should make it less likely that GKAs cause hypoglycemia. Inhibition of glycogenolysis by glycogen phosphorylase inhibitors (GPI) is another strategy to reduce blood glucose and has attracted the interest of many companies with drug discovery activities. The opposite approach is to inhibit gluconeogenesis by antagonizing the activity of fructose 1,6-bisphosphatase. Sankyo’s and Metabasis’ CS-917 was shown to cause a clinically significant reduction in blood glucose.

Protein tyrosine phosphatase 1B (PTP-1B) downregulates the insulin receptor. Inhibition of PTP-1B should prevent downregulation of the insulin receptor, thus improving insulin action. Isis showed clinically that its antisense compound could induce insulin sensitizing activity in healthy volunteers. Results of 12-weeks treatment of diabetes patients with ISIS 113715 are expected this year. Small molecule PTP-1B inhibitors are in the pipeline, but do not lead the field after failure of Wyeth’s phase II compound. Further novel approaches include a beta3 adrenergic agonist in phase II, a phosphodiesterease 11A inhibitor and a dually acting small molecule in preparation for phase I which increases insulin secretion and peripheral insulin sensitivity.

About La Merie

La Merie S.L. is a Business Intelligence enterprise fully dedicated to provide high quality R&D information to the biopharmaceutical industry. La Merie offers individual consultancy services and publishes reports and periodicals. For more information visit www.lamerie.com .

About R&D Pipeline News

R&D Pipeline News is a premier information source about research and development projects in the pipeline of the biopharmaceutical industry and is directed to all stakeholders in R&D. The weekly publication comes in a rapid- and easy-to-screen tabular format and provides access to the original information source via hyperlinks. R&D Pipeline News covers all relevant treatment modalities and is directly delivered to the desktop via e-mail.

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