Programmed cell death protein receptor and ligands in haematological malignancies - Current status.

The checkpoint inhibitors have been continuously present in haematology for 20 years. From the first description, several of them were enrolled to the list of the oncological drugs. The research on nivolumab, avelumab, durvolumab is still in progress. In the treatment of some diseases, for instance, Hodgkin lymphoma, the programmed death cell pathway has already an important role. During the last years, the guidelines were enriched by using these drugs, both in solid and haematological malignancies. In this review, we present a history of discovery, research and clinical use of this new class of drugs potentially providing a significant change in curability rates of some haematological malignancies.