Viral proteases are well-established therapeutic targets in HIV and hepatitis C virus infections. Following the recent COVID-19 pandemic, one of the strategies in place is SARS-CoV-2 main protease (Mpro) inhibition, given the crucial role of SARS-CoV-2 Mpro in the replication of the virus.

Microtubule-associated serine/threonine kinase-like (MASTL) is involved in cell proliferation, migration, and invasion and for that reason is considered a relevant therapeutic target for cancer treatment. At the recent ACS Fall meeting, researchers from Pfizer Inc. presented the discovery and characterization of a series of potent and selective MASTL inhibitors for the treatment of cancer.

The U.S. FDA approved Pfizer Inc.’s respiratory syncytial virus (RSV) prophylactic, Abrysvo (RSVpreF) for maternal use, providing pregnant women with the option of protecting their newborns up to the age of 6 months against RSV for the first time. The regulator’s Vaccines and Related Biological Products Advisory Committee voted 14-0 in favor of approving the BLA for maternal use of the vaccine in May, a few weeks before the agency gave it the go-ahead for use in older adults (those ages 60 and older).

Less than a week after approving Johnson & Johnson’s bispecific antibody, Talvey (talquetamab-tgvs), for relapsed or refractory multiple myeloma (r/r MM) under accelerated review, the U.S. FDA has followed suit with Pfizer Inc.’s equivalent, Elrexfio (elranatamab-bcmm). The accelerated clearance of Elrexfio – a B-cell maturation antigen (BCMA) bispecific antibody that targets BCMA on myeloma cells and the CD3 receptor on T cells – covers it for adult patients who have received at least four prior lines of therapy, including a proteasome inhibitor, an immunomodulatory agent and an anti-CD38 monoclonal antibody.

Alexion, Astrazeneca Rare Disease, part of Astrazeneca plc, has entered a definitive purchase and license agreement for a portfolio of preclinical gene therapy programs and enabling technologies from Pfizer Inc.

Riparian Pharmaceuticals Inc., a Viva Biotech Holdings Group portfolio company, has entered into an exclusive license agreement and research agreement with Pfizer Inc. in cardiovascular disease.

Venture firm Flagship Pioneering Inc. and Pfizer Inc. are each investing $50 million in a pact that could result in the development of 10 programs, each worth a potential $700 million in milestones. Altogether, if all products are successfully commercialized, the deal could be worth $7 billion, with milestone money going to Flagship and some of its 45 bioplatform companies.

Sanofi SA and Astrazeneca plc had a lot to celebrate July 17 when the FDA approved Beyfortus (nirsevimab) ahead of schedule, making it the first respiratory syncytial virus (RSV) prophylactic for infants in the U.S. “This is just really an historic day,” Michael Greenberg, a Sanofi vice president and medical head of the company’s North America vaccines unit, told BioWorld. The companies had been expecting the FDA decision later this quarter. The earlier approval suggests the FDA appreciated the urgency of having time for health systems and doctors to get the drug ahead of the next RSV season, Greenberg said.