In the latest deal from the burgeoning antibody-drug conjugate (ADC) space, Eisai Co. Ltd. and privately held Bliss Biopharmaceutical (Hangzhou) Co. Ltd. reached a development and commercialization agreement that could be worth up to $2 billion. The massive collaboration is the eighth largest so far this year and one of three that involve ADCs in the year’s top 10 deals. The year’s biggest, according to BioWorld statistics, is the partnership extension between Evotec SE and Bristol Myers Squibb Co. to identify neurodegenerative disease therapies for eight years. The other ADC deals involve Synaffix BV, which signed a $2 billion pact in January with Amgen Inc., and a $2.2 billion expanded deal in February with Macrogenics Inc.

Cyclin-dependent kinase 4 and 6 (CDK4 and CDK6) are validated targets for the treatment of ER+/HER2- breast cancer, but resistance to therapy is still a problem in these patients, with >20% of them developing intrinsic resistance and up to 70% developing acquired resistance within 3 years.

Tumor cells are known to produce high amounts of intracellular lipids, leading to increased levels of fatty acids, cholesterol and membrane phospholipids. Death domain-associated protein (DAXX) is a small ubiquitin-related modifier (SUMO)-binding protein that plays a role in transcription regulation by interacting with transcription factors such as p53 and NF-κB.

Immutep Ltd.’s lead immunotherapy candidate, eftilagimod (IMP-321, efti), plus pembrolizumab reverted previous resistance to PD-1/PD-L1 therapy in part B of the TACTI-002 phase II trial in second-line metastatic non-small-cell lung cancer (NSCLC) in patients refractory to anti-PD-1/PD-L1 therapy.