Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN)

The main goal of this study is to investigate the effectiveness and safety of chemotherapy agents in the treatment of participants with BPDCN and to provide comparator arm data to the prospective ELZONRIS registry study (STML-401-0521).

The main goal of this registry study is to investigate the effectiveness and safety of tagraxofusp in the treatment of adult participants with BPDCN in the real-world clinical practice setting.

The goal of this clinical trial is to study the efficacy of the tagraxofusp + venetoclax combination in treatment-naive blastic plasmacytoid dendritic cell neoplasm adult patients. The main question is to verify the response in patients after 3 cycles of tagraxofusp+venetolax and to demonstrate if the combination of tagraxofusp + venetoclax increases the rate of complete remission, assessed after 3 months of treatment. Patients will receive a ramp-up phase of venetoclax during 3 days and at least 3 cycles of venetoclax. After, the investigators will evaluate the response, and depending on the response observed, patients may receive additional cycles of treatment for a maximum of 24 cycles, or receive an allograft or discontinue the treatment in the case of therapeutic failure.

Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN) is a very rare hematologic malignancy. Despite recent advances, at present there is no consensus on the optimal treatment of BPDCN. The optimal therapy of disease remains to be determined, and due to the rarity of cases, there is a need for international collaboration to collect data on BPDCN clinical presentations, diagnostics, treatment regimens and outcomes. Therefore, the objectives of this study are: (1) to build a large database of patients with BPDCN, (2) to investigate the characteristics and outcome of the disease with different treatment regimens, (3) to evaluate prognostic factors, and (4) to generate data-based prospective treatment recommendations.