Provided herein are uses of fibroblast growth factor receptor 2 (FGFR2) inhibitors in cancer treatment, in some cases in combination with immune stimulating agents, such as inhibitors of PD-1 or PD-L1. In some embodiments, FGFR2 inhibitors may comprise FGFR2 antibodies or FGFR2 extracellular domain (ECD) polypeptides, or FGFR2 ECD fusion molecules comprising an FGFR2 ECD and a fusion partner. In some embodiments, PD-1/PD-L1 inhibitors may comprise anti-PD-1 antibodies such as antibodies that bind to PD-1 or to PD-L1 and inhibit interactions between these proteins, as well as PD-1 fusion proteins or polypeptides.

The present disclosure provides anti-CCR8 antibodies, and compositions and methods of their preparation and use.

Isolated antibodies that bind to human TIGIT (T-cell immunoreceptor with Ig and ITIM domains) are provided. In some embodiments, the antibody has a binding affinity (K.sub.D) for human TIGIT of less than 5 nM. In some embodiments, the anti-TIGIT antibody blocks binding of CD155 and/or CD112 to TIGIT. In some embodiments, the antibodies are afucosylated.

The present invention is directed to use of kifunensine for increasing sialylation of a glycosylated polypeptide, wherein a cell that produces the glycosylated polypeptide is contacted with kifunensine. Also provided are related methods for increasing sialylation of a glycosylated polypeptide and producing a glycosylated polypeptide, as well as glycosylated polypeptides and pharmaceutical compositions comprising the same, and their use in medicine.

Provided are anti-FGFR2b antibodies or antigen-binding fragments thereof, isolated polynucleotides encoding the same, pharmaceutical compositions comprising the same, and the uses thereof.

Provided are anti-FGFR2b antibodies or antigen-binding fragments thereof, isolated polynucleotides encoding the same, pharmaceutical compositions comprising the same, and the uses thereof.

The present disclosure provides anti-CCR8 antibodies, including compositions and methods of using such antibodies.

The present application relates to recombinant antibodies that are engineered to alter interactions between the antibodies and one or more endogenous lipases of a host cell used to produce the antibodies. In some cases, the antibodies are mutated in the heavy chain constant region, such as at CH1, CH2, and/or CH3. In other cases, the antibodies are mutated to alter their glycosylation profile.

The present disclosure is directed to leukotoxin-binding antibodies and antigen-binding fragments thereof. The antibodies and fragments can be used, for example, to detect leukotoxin and/or in methods of treating and preventing Staphylococcus aureus infections.

Bispecific antibodies which comprise one antigen-binding region binding to an epitope of human epidermal growth factor receptor 2 (HER2) and one antigen-binding region binding to human CD3, and related antibody-based compositions and molecules, are disclosed. Pharmaceutical compositions comprising the antibodies and methods for preparing and using the antibodies are also disclosed.