Described herein are nanoprobes comprising ultrasmall aminated and cRGDY-conjugated nanoparticles labeled with Zirconium-89 (.sup.89Zr) and methods of their use. The provided compositions are renally clearable and possess suitable blood circulation half-time, high tumor active targeting capability, dominant renal clearance, low liver accumulation, and a high tumor-to-background ratio. The described nanoprobes exhibit great potential as “target-or-clear” tracers to human subjects for systemic targeted imaging (or treatment) of cancer.

Described is a labeling technique which can facilitate the metabolism in the liver after administration to patients without the reduction in the antibody function, thereby reducing accumulation of radionuclides in an organ such as the liver, and a modified antibody containing an IgG antibody and an IgG-binding peptide bound to the IgG antibody. The IgG-binding peptide has an amino acid sequence consisting of 13 to 17 amino acid residues, such as GPDCAYH(Xaa1)GELVWCTFH (SEQ ID NO: 2) wherein Xaa1 represents a lysine residue, a cysteine residue, an aspartic acid residue, a glutamic acid residue, 2-aminosuberic acid, or diaminopropionic acid, and a compound represented by the following formula (II-1) is linked at a position of the lysine residue via a modification linker to the N terminus of the IgG-binding peptide. ##STR00001##

Described herein are protein-payload conjugates and compositions thereof that are useful, for example, for target-specific delivery of therapeutic and/or imaging agent moieties. In certain embodiments, provided are specific and efficient methods for producing protein-payload constructs (e.g., antibody-drug conjugates) utilizing a combination of transglutaminase and Diels-Alder techniques. Antibody-drug conjugates and compositions which comprise glutaminyl-modified antibodies, Diels-Alder adducts, and reactive payloads and are provided.

Provided herein are agents, such as antibodies, antibody-drug conjugates, or chimeric antigen receptors, that target B7-H3. Methods of treating cancer are provided, comprising administering to a patient in need thereof an effective amount of an B7-H3-targeting agent. The patient may be selected for treatment if the cancer expresses an increased level of B7-H3.

Provided herein are agents, such as antibodies, antibody-drug conjugates, or chimeric antigen receptors, that target B7-H3. Methods of treating cancer are provided, comprising administering to a patient in need thereof an effective amount of an B7-H3-targeting agent. The patient may be selected for treatment if the cancer expresses an increased level of B7-H3.

Provided are compounds and compositions for targeting macrophages and other mannose-binding c-type lectin receptor high expressing cells and methods of treatment and diagnosis using such compounds and compositions.

The present invention relates to peptides, proteins, nucleic acids and cells for use in immunotherapeutic methods. In particular, the present invention relates to the immunotherapy of cancer. The present invention furthermore relates to tumor-associated T-cell peptide epitopes, alone or in combination with other tumor-associated peptides that can for example serve as active pharmaceutical ingredients of vaccine compositions that stimulate anti-tumor immune responses, or to stimulate T cells ex vivo and transfer into patients. Peptides bound to molecules of the major histocompatibility complex (MHC), or peptides as such, can also be targets of antibodies, soluble T-cell receptors, and other binding molecules.

Embodiments of the present invention provide compositions and methods for the treatment of cancer, in particular prostate cancer. According to certain embodiments, a method of treating cancer in a patient comprises administering to the patient a therapeutically effective amount of a radioconjugate, wherein the radioconjugate comprises an antibody or antigen binding domain with binding specificity for hK2. Also provided herein are pharmaceutical compositions comprising radiolabeled antibodies with binding specificity for hK2.

The present invention relates to dimers comprising a first polypeptide and a second polypeptide, wherein each of said first and second polypeptide comprises at least one immunoglobulin single variable domain (ISVD) and a C-terminal extension comprising a cysteine moiety (preferably at the C-terminus), wherein said first polypeptide and said second polypeptide are covalently linked via a disulfide bond between the cysteine moiety of said first polypeptide and the cysteine moiety of said second polypeptide, in which the dimer outperformed the benchmark constructs, e.g. cognate multivalent and multispecific constructs, in various assays. The present invention provides methods for making the dimers of the invention.

The present invention relates to monoclonal anti-Sortilin antibodies which have been found useful correcting a deficient level progranulin (PGRN). In particular, these antibodies can be used in the treatment of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS).