The present invention relates generally to the field of human genetics. More specifically, this invention relates to the clinical application of a bioinformatics methodology described in patent application Ser. No. 14/154,303 for the early detection of cancer. Said clinical application relates to obtaining the genome sequence from an individual's healthy tissue and comparing it to the DNA sequence obtained from that same individual's body tissues, wastes and/or fluids. Said method inspects the DNA sequence obtained from body tissues, wastes and/or fluids for the presence of DNA damage at bioinformatically predicted genetically unstable loci within cancer-linked regions of the patients healthy DNA. The identification of DNA damage within a predicted locus is considered to be evidence of cancer. Said method then uses the unique signature of any damaged DNA sequence which has occurred at predicted unstable cancer-linked loci to construct patient-specific cancer biomarker(s). These biomarkers can be used for monitoring the progression of cancer and for treatment of the cancer in a patient.