Abstract: The disclosure provides methods and compositions for treating tumors, particularly HER2-positive tumors. The method comprises administering a therapeutically effective amount of a HER2/4-1BB bispecific fusion protein. The HER2/4-1BB bispecific fusion protein is administered at a dose of from about 2.5 mg/kg to about 27 mg/kg, once every week, once every two weeks, or once every three week.

Abstract: The disclosure provides methods and compositions for treating tumors, particularly HER2-expressing tumors. The method comprises administering a therapeutically effective amount of a HER2/4-1BB bispecific fusion protein. The HER2/4-1BB bispecific fusion protein may be administered at a first dose and, subsequently, at a second dose, wherein the first dose exceeds the second dose.

Abstract: The disclosure provides methods for predicting a positive clinical outcome for a cancer patient upon treatment with a 4-1BB agonistic agent, for assessing activity of such 4-1BB agonistic agent in a subject, preferably a cancer patient, and for selecting a dose of a 4-1BB agonistic agent for treating a disease, such as cancer. The disclosure also provides methods of treating cancer as well as uses of biomarkers and uses of kits for their detection.

Abstract: A molecular nanotag is disclosed that includes a core nanoparticle with a diameter of less than about 100 nm, with an optional shell surrounding the core, and an armor bound to the surface of the core nanoparticle, or if present, to the surface of the shell. The molecular nanotag also includes a functionalized end with a fixed number of binding sites that can selectively bind to a molecular targeting ligand. Any one of, or any combination of, the core, the shell and the armor contribute to fluorescence, light scattering and/or ligand binding properties of the molecular tag that are detectable by microscopy or in a devices that measures intensity or power of fluorescence and light scattering.

Abstract: A molecular nanotag is disclosed that includes a core nanoparticle with a diameter of less than about 100 nm, with an optional shell surrounding the core, and an armor bound to the surface of the core nanoparticle, or if present, to the surface of the shell. The molecular nanotag also includes a functionalized end with a fixed number of binding sites that can selectively bind to a molecular targeting ligand. Any one of, or any combination of, the core, the shell and the armor contribute to fluorescence, light scattering and/or ligand binding properties of the molecular tag that are detectable by microscopy or in a devices that measures intensity or power of fluorescence and light scattering.