Japan's Sumitomo Dainippon Pharma Co. Ltd. plans to pay $3 billion to acquire Roivant Sciences Ltd.'s ownership interests in five biopharma companies, plus options to acquire up to six more from the prolific company-builder. The deal, slated to close in October, would give Sumitomo Dainippon controlling interests in Myovant Sciences Inc., Urovant Sciences Inc., Enzyvant Therapeutics Inc. and Altavant Sciences Inc., as well as an equity stake of more than 10% in Roivant itself.

CEO Travis Mickle said prodrug-focused Kempharm Inc.'s potential $493 million deal with Gurnet Point Capital (GPC) marks "the end of a long journey to reach a very valuable point" in the story of the company, which has "ended with the same goal it started with" – gaining the best possible partner for attention deficit and hyperactivity disorder (ADHD) prospects KP-415 and KP-484.

Shares of San Diego-based Cidara Therapeutics Inc. (NASDAQ:CDTX) enjoyed a skyward ride, closing Tuesday at $2.35, up 67 cents, or 40%, on word of a deal with Mundipharma International Ltd., of Cambridge, U.K., to develop and commercialize rezafungin for invasive fungal infections. "Historically, [antifungal] pricing has been much stronger in the EU, so that is an important opportunity for us and now for Mundipharma as well," Cidara CEO Jeffrey Stein said.

HONG KONG – Daejeon, South Korea-based Alteogen Inc. said that it has signed a licensing agreement with Brazil's Cristália Produtos Químicos Farmacêuticos Ltd. to jointly develop and commercialize Alteogen's ALT-P1, a persistent growth hormone for children.

Calling the tie "magic," Pfizer Inc. CEO Albert Bourla defended his firm's decision to spin off its Upjohn unit and merge in an all-stock deal with Mylan N.V., creating a new entity to be named later with pro forma revenues as high as $20 billion. "We have a commercial footprint that is very much focused on China, on emerging markets," he said, which will help Mylan.

Shares of Lexicon Pharmaceuticals Inc. (NASDAQ:LXRX) fell 70.3% Monday to $1.69 as Sanofi SA terminated a $1.7 billion diabetes collaboration with the company. The decision followed two trials in which Zynquista (sotagliflozin), a dual SGLT inhibitor, failed to make a statistically significant dent in blood sugar control in patients with chronic kidney disease, a common result of diabetes.

DUBLIN – Zambon SpA is acquiring Breath Therapeutics BV for €140 million (US$155.8 million) up front plus up to €360 million more in regulatory and commercial milestones linked to the progress of Breath's drug-device combo, which is currently in phase III development for bronchiolitis obliterans syndrome (BOS), a fatal form of airway inflammation that can arise in lung transplant recipients.

Durect Corp. (NASDAQ: DRXX) got a solid bump after announcing it granted Gilead Sciences Inc. exclusive worldwide rights to develop and commercialize a long-acting injectable HIV product created with Durect's platform, Saber, in a deal that could generate more than $300 million for Durect.

LONDON – Silence Therapeutics plc has finally secured a deal to transform its fortunes, signing up Mallinckrodt plc in a potential $693 million-per-asset collaboration to develop siRNA therapeutics that block the complement inflammatory cascade.

HONG KONG – Celltrion Inc., of South Korea, and Hong Kong-based conglomerate Nan Fung Group Holdings Ltd. said they have built a joint venture named Vcell Healthcare Ltd., geared toward the Chinese market.