P. Denoix and G. Mathe Approximately 70% of cancer patients relapse after surgery before the 5th year and, in most cases, for example in breast carcinoma, they relapse still later up to the 20th year. For some considerable time, the strategy of cancer treatment has been limited to the sophistication of surgery-radiotherapy combinations that maximally decreased the incidence of local and regional relapses in sites that were within their reach. Today, the practice of clinical oncology is unthinkable without the active participation of the medical oncologist. He is the "third man" of the clinical oncology team, and he has recently focused attention on the fact that most relapses arise from distant metastases due to the proliferation of cells seeded there after having left the primary tumor site at the time of operation and, hence, are inaccessible to any form oflocal and/or regional treatment. On this evidence, medical oncologists have proposed the application of medical treatments for disseminated minimal residual disease (MRD). They have two available means: chemother apy and immunotherapy. Medical oncologists in general can be divided into three groups: chemotherapists, immunotherapists, and chemoimmunotherapists. The pure chemotherapists, who had already cured some malignant neoplasias such as Hodgkin's disease, acute lymphoid leukemia, placental choriocarcinoma, and Wilms' tumor, thought they might have the means of attacking the residual disease of common cancers.

1978 Annual Plenary Meeting of the European Organization for Research on Treatment of Cancer, Paris, June 1978

First multi-year cumulation covers six years: 1965-70.

This volume provides a concise yet comprehensive overview of minimal residual disease (MRD) testing. The text reviews the history of MRD testing, MRD testing for acute lymphoblastic leukemia/lymphoma, molecular diagnostics for MRD analysis in hematopoietic malignancies, the use of "difference from normal" flow cytometry in monitoring AML response, ML-DS for measurable residual disease detection, and advancements in next generation sequencing for detecting MRD. Written by experts in the field, Minimal Residual Disease Testing: Current Innovations and Future Directions is a valuable resource for hematologists, oncologists, pathologists, and radiologists on the variety of technologies available to detect MRD and how best to integrate these platforms into clinical practice.

Adjuvant treatment is administered prior to or as follow up to surgical procedures for breast cancer. Proven success in using medical therapies allowing for breast conserving procedures or reducing risk of occurrence. Although there has been much progress towards a cure, including the introduction of new targeted therapies, metastasizing cancer remains highly incurable.

The objective of the treatment of acute leukemia involves the eradication of all neoplastic cells, including the last one. Ideally, treatment should be controlled by monitoring cell kill. If the last cells could be discovered and their biological properties be determined, the qualitative and quantitative effects of treatment should be directly evaluable. This should ultimately permit a calculated tumor cell reduction thereby avoiding overtreatment and excessive toxicity and thus providing a basis for individualized antileukemic treatment. In recent years several new developments have contributed to the selective discovery of minimal numbers of leukemic cells which are hidden among the normal cells in the marrow cavities. These methods are the first steps to the realization of the therapeutic goals indicated above. They include the production and ap plication of monoclonal antibodies against differentiation antigens on the cell sur face, the use of pulse cytophotometry - and cell sorter techniques, the employment of cytogenetics, the development of culture techniques for selective growth of precursor cells and several others. These methodologies offer prospects for refined diagnosis and, as far as the elimination of leukemic cells is concerned, the further development of autologous bone marrow transplantation. Eliminating tumor cells from autologous grafts requires the detailed knowledge of the cellular inter relationships within the neoplasm so that the neoplastic cells responsible for tumor propagation are specifically removed. Recognition and characterization of the clonogenic cells of the neoplasm should then lead to determining their sensitivity to the therapeutic agents which are clinically applied.