Eisai Co. and Merck, known as MSD outside the United States and Canada, have agreed upon a strategic collaboration for the worldwide co-development and co-commercialization of Lenvima (lenvatinib mesylate), an orally available tyrosine kinase inhibitor discovered by Eisai. Under the agreement, Eisai and Merck will develop and commercialize Lenvima jointly, both as monotherapy and in…