Abstract: Method of selecting treatment for a subject diagnosed with cancer comprises contacting antibody that binds specifically to thymidine kinase 1 (TK1) protein with a first body fluid sample before completing cancer treatment; determining a first amount of antibody binding to TK1 protein in the first sample; correlating the first amount to a first concentration of TK1 protein using a standard curve correlating an amount of antibody binding to recombinant human TK1 (rhTK1) and a concentration of rhTK1; contacting the antibody with a second body fluid sample within one to six months after the cancer treatment; determining a second amount of antibody binding to TK1 protein in the second sample; correlating the second amount to a second concentration using the curve; identifying the patient as having a high risk of future cancer relapse if the second concentration is ? the first concentration; and selecting an adjuvant treatment based on the identification.

Abstract: Method of determining a likelihood of cancer relapse in a subject who has completed cancer tumor surgery, radiotherapy treatment and/or chemotherapy treatment comprises contacting an antibody that binds specifically to a serum form of thymidine kinase 1 (STK1) protein with a blood serum sample one to six months after completing the surgery and/or treatment, and before any cancer relapse has been detected; determining an amount of antibody binding to STK1 protein in the sample; correlating the amount of antibody binding to STK1 protein to a concentration of STK1 protein in the sample; and based on the concentration of STK1 protein in the sample, generating decision support information representative of a likelihood of cancer relapse in the subject one to ten years after completion of the surgery and/or treatment, the decision support information comprising a likelihood value defining one of a high or low likelihood of cancer relapse.

Abstract: Monoclonal antibodies and fragments thereof are capable of binding to a serum form of human TK1. Kits and methods involve the use of such monoclonal antibodies or fragments.

Abstract: The embodiments relate to monoclonal antibodies or fragments capable of binding to a serum form of human TK1 and to kits and methods involving the use of such monoclonal antibodies or fragments.

Abstract: Novel thymidine kinase (TK1) derived peptide consisting of the amino acid sequence of SEQ ID NO:1 or SEQ ID NO:2 is employed to obtain ligands having specificity to the peptide. The ligand may be an antibody or fragment thereof and may be used in various methods and kits for health screening and the like.

Abstract: A method of predicting the likelihood of cancer relapse in a patient undergoing treatment for cancer is provided. The binding response level of an immunoreactive material (IM) comprising thymidine kinase 1 (TK1) protein is determined in a body fluid sample of a patient and the likelihood of relapse of the cancer disease is predicted based on this determined IM binding response level. Those patients that run a risk of cancer progress and relapse 1-15 years after the cancer treatment may be identified directly by the IM binding response level within a few months following initiation of the treatment.