Synta and GSK enter into $1.1 billion deal

LONDON and LEXINGTON, Mass. Synta Pharmaceuticals and GlaxoSmithKline have agreed on a collaboration for the joint development and commercialization of STA-4783, a new drug entering phase-three clinical development for the treatment of metastatic melanoma.

Under the terms of the agreement, the companies will share responsibility for the development and commercialization of the drug in the United States, with GlaxoSmithKline having exclusive rights outside of the United States.  Synta can earn up to $1.1 billion as a result of this agreement in development, upfront payments, stock purchases and milestone payments.

"This agreement confirms GSK's growing status as a world leader in the development of new oncology medicines for use in the treatment, prevention and supportive care of cancer patients.  It further strengthens our late stage oncology pipeline, which currently includes ten phase-three programs, and also demonstrates our commitment to identifying compounds that have the potential to deliver real benefit to patients," said Moncef Slaoui, chairman of research and development at GSK.  "The data we have seen from the phase-two trials conducted by Synta have given us confidence in the potential of STA-4783 as a novel means of treating metastatic melanoma, a disease for which there is high unmet medical need."

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