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Histiocytic disorders

Blastic plasmacytoid dendritic cell neoplasm

Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare aggressive cancer of immature plasmacytoid dendritic cells. It often appears in the skin but can also involve marrow, blood, lymph nodes and the central nervous system.

Condition overviewSource check:
Other names and abbreviations

BPDCN · CD4+ CD56+ hematodermic neoplasm (historical) · Blastic NK-cell lymphoma · agranular CD4-positive natural killer cell leukaemia (historical)

Where transplant fits

Allogeneic transplantation is commonly considered for eligible patients, ideally in a first remission when feasible. Unrelated registry donors and relatives can provide suitable grafts. The evidence supporting timing is mainly observational, and treatment response or transplant does not guarantee cure.

Treatment depends on the exact diagnosis, disease stage, prior treatment and the person’s health. These categories are not estimates of donor demand.

Treatment at a glance

Who it affects
BPDCN mainly affects older adults, more often men, but it also occurs in younger people and children.
Other treatment options
Treatment may use the CD123-directed medicine tagraxofusp, leukemia-style chemotherapy or a clinical trial. CNS evaluation and CNS-directed treatment are considered within specialist care. Response and medical fitness guide subsequent consolidation.
Cells used for transplantation
Donated blood-forming cells for allogeneic transplantation. Marrow, peripheral blood or cord blood and donor type are selected for the patient and transplant approach.

Questions to bring to your care team

What is the exact diagnosis or subtype? What is the goal of each treatment option? If transplant is being considered, why does it fit this situation, which cells would be used and what are the alternatives?

Supporting someone with a diagnosis

Sources and further reading

  1. WHO fifth-edition classification: Myeloid and Histiocytic/Dendritic Neoplasms
    WHO classification authors / Leukemia · Accessed 2026-09-05
  2. Allogeneic hematopoietic cell transplantation for blastic plasmacytoid dendritic cell neoplasm: a CIBMTR analysis
    CIBMTR / Blood Advances · Accessed 2026-09-05
  3. Stem Cell and Bone Marrow Transplants for Cancer
    NCI · Accessed 2026-09-05
  4. Donor and cord blood unit selection guidelines
    NMDP / CIBMTR · Accessed 2026-09-05

Understanding can become action.

Some patients need a blood stem cell donor. Others receive different treatment. Wherever your interest began, you can help JBF reach more people who may be able to donate.

Explore the official registry serving where you live. It explains who can join, how registration works and what donation involves.

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If joining is not right for you, a gift to the Jada Bascom Foundation supports education, outreach and referrals to official registries.

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Keep learning

Why matching is hard: an interactive leukemia story

More in histiocytic disorders. Sharing a group does not mean sharing a treatment plan.

The flyer: STOP BLOOD CANCER set in tall letters over a dark plum page, a quote, and a QR code beside the words TEXT JADA TO 61474.One standing face of the table tent: the same headline and quote on the left, a large QR code on the right.

Take it off the screen

Print it. Put it where people already stand.

A coffee counter, a church foyer, a break room, a race table. Every sheet carries the code that opens Jeana’s walk, and a number to text for anyone who would rather not scan — no app, no wifi, nothing to hand back.

Everything else for running a drive

Blastic plasmacytoid dendritic cell neoplasm — condition and treatment guide | Jada Bascom Foundation