Fibronectin type III domains (FN3) that specifically bind to CD8A, related polynucleotides capable of encoding CD8A-specific FN3 domains, cells expressing the FN3 domains, as well as associated vectors, and detectably labeled FN3 domains are useful in therapeutic and diagnostic applications.

Described herein are novel anti-PD1 antibody reagents (e.g., antibodies, antigen-binding fragments thereof, and/or chimeric antigen receptors). Also described herein antibody-drug conjugates or kits comprising the disclosed antibody reagents, as well as methods of treating cancer by administering the disclosed antibody reagents.

The invention relates to the application of inhibition of transcription factor 4 (TCF4/ITF2) in the treatment of cancer. This in particular in combination therapy in conjunction with an immunotherapeutic compound (such as for treating cancers poorly responding or refractive to immunotherapy). In particular, inhibition of TCF4/ITF2 is capable of restoring response to immunotherapy such as immune checkpoint inhibitor therapy. Expression levels of TCF4/ITF2 as well as levels of mesenchymal-like cancer cells in a cancer lesion are predictive of future response to immunotherapy early after initiation of the immunotherapy. Further part of the invention are methods of detecting mesenchymal-like cancer cells.

The present invention provides methods of treating cancer patients having KRAS mutant tumors, and methods of selecting such patients for treatment, comprising selectively administering an anti-CTLA-4 antibody to those patients having KRAS mutations. Exemplary anti-CTLA-4 antibodies for use in the methods of the invention include ipilimumab, nonfucosylated anti-CTLA-4 antibodies, activatable anti-CTLA-4 antibodies, and nonfucosylated activatable anti-CTLA-4 antibodies. Such methods optionally comprise concurrent treatment with an anti-PD-1 or anti-PD-L1 antibody.

Provided are novel multispecific antibodies comprising at least one of a first antigen-binding region and a second antigen-binding region each capable of binding specifically to human epidermal growth factor receptor 2 (HER2), and a third antigen-binding region capable of binding specifically to transferrin receptor (TfR).

In alternative embodiments, provided are chimeric, synthetic or recombinant anti-human ICOS protein or polypeptide (also called inducible T-cell co-stimulator, or Cluster of Differentiation-278, or CD278) antibodies (Abs), including products of manufacture and kits comprising them, and methods for making and using them, including for example their use in the detection or diagnosis, and treatment, of a cancer, or other diseases or conditions involving expression of ICOS. In alternative embodiments, anti-ICOS proteins (for example, antibodies) as provided herein are used together with an agent for determining whether ICOS expression or activity is present, increased, reduced or absent. In alternative embodiments, anti-ICOS antibodies as provided herein are used in the diagnosis and/or treatment of a cancer or a tumor.

Antibodies that bind to AXL protein and variants thereof are described herein. AXL exhibits a distinct and limited expression pattern in normal adult tissue(s), and is aberrantly expressed in the cancers listed in Table I. Consequently, the MAbs of the invention provide a diagnostic composition for the treatment and management of cancer.

The present invention discloses novel monoclonal antibodies and functional fragments thereof that specifically bind to SLeA carbohydrate antigen with high specificity and selectivity. The invention further provides compositions comprising the antibodies or fragments thereof as well as uses of the antibodies, fragments and compositions.

Antibodies, antigen-binding fragments, and conjugates (e.g., antibody-drug conjugates such as those comprising eribulin) thereof that bind to mesothelin are disclosed. The disclosure further relates to methods and compositions for use in the treatment of cancer by administering the compositions provided herein.

Provided herein are antibody molecules that bind specifically to C-MET and related nucleic acid molecules, vectors and host cells. Also provided herein are medical uses of such antibody molecules.