Click to view a price quote on BX. : Blackstone  (BX) - Get Blackstone Group Inc. Class A Report Life Sciences plans to invest up to $250 million in Autolus Therapeutics  (AUTL) - Get Autolus Therapeutics Plc Sponsored ADR Report, a clinical-stage biopharmaceutical company, to develop cancer treatments. As part of the agreement, Blackstone will invest $150 million in product financing to help develop and commercialize the London company's leukemia therapy treatments, with $50 million payable when the deal closes. Blackstone, the New York private-equity firm, also agreed to buy $100 million of the American depositary shares of the biopharma.