The Hematology Biology Department is now divided into two departments. The Clinical Biology Department includes the hematology and morphology, hemostasis, flow cytometry, HLA/HPA, and onco-hematology molecular biology laboratories. In addition, the erythrocyte immunology laboratory and the blood bank have joined the Human Body Material Banks. The biologists involved work together to develop new concepts and analyses aimed at optimizing patient care and safety.
The Flow Cytometry Laboratory has taken a major technological step forward with the acquisition of new automated systems for labeling cells of interest using 12 antibodies combined with different fluorochromes. We are not far from being able to “find a needle in a haystack’’. This project is being validated and will gradually become routine in 2025. It reflects an ongoing commitment to technical innovation to meet the growing needs of onco-hematology and precision medicine. Over the last few decades, immunotherapy has revolutionized cancer treatment. Among these new weapons, CAR-T cells have demonstrated their efficacy in the treatment of hematological malignancies. However, the clinical use of CAR-T cells revealed marked inter-individual variability in terms of anti-tumor response and remission duration. In this context, immunomonitoring is emerging as a key predictive tool for identifying patients at risk and adapting therapeutic strategies. The Onco-Hematology Molecular Biology Laboratory has set up regular monitoring of patients undergoing treatment in order to correlate immunological and pharmacokinetic biomarkers with clinical events. Preliminary results are very encouraging.
Hospitals must comply with strict standards for blood component storage. These standards aim to limit the risk of blood-borne bacterial infections, maintain cell viability and protein efficiency, and reduce blood loss. This last point is essential, not only for financial management of the blood bank, but above all out of ethical respect for blood donors. With this in mind, the Blood Bank has set up a system for monitoring the temperature at which red blood cell concentrates are transported, so that unused concentrates can be better monitored and returned to stock to avoid waste. Various weak links have been identified and gradually corrected. Optimized storage conditions for red blood cells now ensure patient safety and efficacy, while reducing blood bag losses.
Currently, the greatest risk in transfusion is at the patient's bedside, when there are failures in identitovigilance. Since the risk of drawing blood from the wrong patient is around one in 2,000, international transfusion societies require blood typing to be carried out on two independent samples. This is not always easy to put into practice, and many procedural bypasses have been observed. To avoid the temptation to take both samples at the same time, the Erythrocyte Immunology Laboratory, in collaboration with the information technology department, has introduced the automatic addition of a blood type request to a hemogram prescription for a hospital patient whose blood group is not yet known. If a transfusion is requested for this patient, simple blood type confirmation on a new sample will be enough. This measure considerably improves patient safety.