Four concrete Rare hematological diseases (RHD) areas has been identified for definition of Domain specific RHD Common Data Set (RHD-CDS) in line with ENROL dataset:

1. Blastic plasmacytoid dendritic cell neoplasm (BPDCN): EU-BLAST
2. Myelodysplastic Syndromes (MDS)
3. Rare Anaemia Disorders (RAD): RADeep
4. Bleeding and coagulation disorders: von Willebrand Disease: TWIST