Disclosed herein are systems and assays that employ magnetically susceptible beads and point-of-care devices comprising magnetic immunosensors to determine the amount of glial fibrillary acidic protein (GFAP) in a biological sample obtained from a subject.

The invention features methods of treatment and diagnosis using NRG-2 polypeptides, nucleic acid molecules, and antibodies. The invention also provides novel NRG-2 polypeptides and nucleic acid molecules.

The present invention relates to neukinase, a downstream protein kinase in the neuregulin signaling pathway. In certain aspects, the present invention provides isolated neukinase-encoding nucleic acids, neukinase polypeptides, oligonucleotides that hybridize to neukinase nucleic acids, and expression vectors containing neukinase-encoding sequences. The present invention further provides isolated host cells, antibodies, transgenic non-human animals, compositions, and kits relating to neukinase. In other aspects, the present invention further provides methods of identifying predisposition to cardiac dysfunction, methods of detecting the presence of neukinase, neukinase nucleic acid, methods of screening for agents which affect neukinase activity, and methods of modulating neukinase activity.

The present invention is directed to methods of identifying and treating a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and administering a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as high. The present invention is also directed to methods of identifying a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and withholding a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as low. The invention is also directed to methods of performing an ELISA, including sequential steps of contacting a solid surface with a plurality of solutions each comprising in turn a capture antibody, a blocking agent, a sample suspected of containing an analyte, a detection antibody and an enzyme conjugate, in which the solid surface is subjected to a wash process after each sequential step.

A method of use of an isolated polypeptide conjugated with a radionuclide, wherein the isolated polypeptide binds specifically to HER2, or a variant thereof is described. The method is for monitoring the response to HSP90 inhibition and comprises the use of the isolated polypeptide conjugated with 18F. The application also describes the use of an isolated polypeptide conjugated with 18F, wherein the isolated polypeptide binds specifically to HER2 or variants thereof, as an imaging agent to monitor uptake thereof to measure HSP90 inhibition.

The present invention is directed to methods of identifying and treating a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and administering a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as high. The present invention is also directed to methods of identifying a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and withholding a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as low. The invention is also directed to methods of performing an ELISA, including sequential steps of contacting a solid surface with a plurality of solutions each comprising in turn a capture antibody, a blocking agent, a sample suspected of containing an analyte, a detection antibody and an enzyme conjugate, in which the solid surface is subjected to a wash process after each sequential step.

The present invention is directed to methods of identifying and treating a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and administering a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as high. The present invention is also directed to methods of identifying a human subject harboring a tumor or other disease comprising assessing HRG gene expression at a protein level in the human subject and withholding a treatment comprising an anti-HER3 antibody to the human subject whose HRG gene expression at a protein level is assessed as low. The invention is also directed to methods of performing an ELISA, including sequential steps of contacting a solid surface with a plurality of solutions each comprising in turn a capture antibody, a blocking agent, a sample suspected of containing an analyte, a detection antibody and an enzyme conjugate, in which the solid surface is subjected to a wash process after each sequential step.

The present invention relates to the biomarkers for predicting the clinical response to anti-LPS immunoglobulin treatments in patients in need thereof. In particular, the invention provides methods for predicting the clinical response to an anti-LPS immunoglobulin treatment in a patient in need thereof, said method comprising the steps of evaluating the expression of a predictive biomarker selected from the group consisting of CD14, CD68, TLR4, TLR7, IL6, IL8, IL10, IFN-alpha, IGF1, CXCL1, CXCL9, CXCL10, RAGE, GDNF, BCHE, and combination thereof, in said patient.

This invention provides methods for determining or predicting response to HER2-directed therapy in an individual.

The invention features methods of treatment and diagnosis using NRG-2 polypeptides, nucleic acid molecules, and antibodies. The invention also provides novel NRG-2 polypeptides and nucleic acid molecules.