Although HER2-targeted therapies have become a mainstay in cancer treatment, some tumors evade them by stripping away the portion of the HER2 receptor that most therapies are built to recognize and bind to, but Taiwan’s AP Biosciences Inc. is developing bispecific antibody AP-402 to address treatment-resistant HER2+ cancers.
Investor hopes rose sharply for Merus NV’s phase III trials – data should roll out next year – with bispecific antibody petosemtamab after mid-stage results impressed Wall Street in head and neck squamous cell carcinoma. Shares of Utrecht, the Netherlands-based Merus (NASDAQ:MRUS) jumped, too, closing May 23 at $55.14, up $13.54, or 33%, on interim data as of the Feb. 27 cutoff date.
Interleukin-4 receptor α (IL-4Rα), a shared receptor subunit for both IL-4 and IL-13, along with thymic stromal lymphopoietin (TSLP), are key drivers of the type 2 inflammatory cascade involved in asthma and other inflammatory disorders.
Chronic obstructive pulmonary disease (COPD) is a prevalent and heterogeneous respiratory disorder with limited effective treatments. IL-33 and IL-4Rα are key mediators of airway inflammation in COPD and hence represent potential therapeutic targets.
Although HER2-targeted therapies have become a mainstay in cancer treatment, some tumors evade them by stripping away the portion of the HER2 receptor that most therapies are built to recognize and bind to, but Taiwan’s AP Biosciences Inc. is developing bispecific antibody AP-402 to address treatment-resistant HER2+ cancers.
Pfizer Inc. is paying $1.25 billion up front and up to $4.8 billion in milestone payments to gain global, ex-China rights to SSGJ-707, a PD-1/VEGF bispecific antibody from 3Sbio Inc. that recently won China clearance for a phase III study in lung cancer as a potential first-line monotherapy. Announced after U.S. market hours May 19, the exclusive agreement for SSGJ-707 spells up to $6.15 billion combined for Shenyang, China-based 3Sbio, along with separate tiered double-digit royalty payments on sales of SSGJ-707, if approved.
Current anticancer approaches, such as antibody or CAR T-cell therapies, rely on targeting tumor-associated antigens rather than tumor-specific antigens, with the consequent on-target, off-tumor effects.
Aptevo Therapeutics Inc. is advancing APVO-711, its bispecific antibody targeting PD-L1 x CD40 that combines checkpoint inhibition with immune activation in a single molecule.
The use of mimicking antibodies that activate death receptors (DRs) to selectively induce cell death in cancer cells has shown limited clinical success so far, primarily due to suboptimal efficacy and safety concerns, particularly hepatotoxicity. Emerging strategies to enhance efficacy include the development of bispecific antibodies that simultaneously target DRs and tumor-specific antigens.
Abtherx Inc. has signed a technology license agreement with Rondo Therapeutics with the aim of accelerating Rondo’s pipeline of bispecific antibodies. Rondo aims to advance the field of immuno-oncology, with a focus on treating solid tumors that fail to respond to current therapies.
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