Hematopoietic stem-cell transplantation for advanced systemic mastocytosis

Celalettin Ustun, Andreas Reiter, Bart L. Scott, Ryotaro Nakamura, Gandhi Damaj, Sebastian Kreil, Ryan Shanley, William J. Hogan, Miguel Angel Perales, Tsiporah Shore, Herrad Baurmann, Robert Stuart, Bernd Gruhn, Michael Doubek, Jack W. Hsu, Eleni Tholouli, Tanja Gromke, Lucy A. Godley, Livio Pagano, Andrew GilmanEva Maria Wagner, Tor Shwayder, Martin Bornhäuser, Esperanza B. Papadopoulos, Alexandra Böhm, Gregory Vercellotti, Maria Teresa Van Lint, Christoph Schmid, Werner Rabitsch, Vinod Pullarkat, Faezeh Legrand, Ibrahim Yakoub-Agha, Wael Saber, John Barrett, Olivier Hermine, Hans Hagglund, Wolfgang R. Sperr, Uday Popat, Edwin P. Alyea, Steven Devine, H. Joachim Deeg, Daniel Weisdorf, Cem Akin, Peter Valent

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


Results: Responses in SM were observed in 40 patients (70%), with complete remission in 16 patients (28%). Twelve patients (21%) had stable disease, and five patients (9%) had primary refractory disease. Overall survival (OS) at 3 years was 57% for all patients, 74% for patients with SM-AHNMD, 43% for those with ASM, and 17% for those with MCL. The strongest risk factor for poor OS was MCL. Survival was also lower in patients receiving RIC compared with MAC and in patients having progression compared with patients having stable disease or response.

Conclusion: AlloHCT was associated with long-term survival in patients with advanced SM. Although alloHCT may be considered as a viable and potentially curative therapeutic option for advanced SM in the meantime, given that this is a retrospective analysis with no control group, the definitive role of alloHCT will need to be determined by a prospective trial.

Purpose: Advanced systemic mastocytosis (SM), a fatal hematopoietic malignancy characterized by drug resistance, has no standard therapy. The effectiveness of allogeneic hematopoietic stem-cel transplantation (alloHCT) in SM remains unknown.

Patients and Methods: In a global effort to define the value of HCT in SM, 57 patients with the following subtypes of SM were evaluated: SM associated with clonal hematologic non-mast cell disorders (SM-AHNMD; n = 38), mast cell leukemia (MCL; n = 12), and aggressive SM (ASM; n = 7). Median age of patients was 46 years (range, 11 to 67 years). Donors were HLA-identical (n = 34), unrelated (n = 17), umbilical cord blood (n = 2), HLA-haploidentical (n = 1), or unknown (n = 3). Thirty-six patients received myeloablative conditioning (MAC), and 21 patients received reduced-intensity conditionng (RIC).

Original languageEnglish (US)
Pages (from-to)3264-3274
Number of pages11
JournalJournal of Clinical Oncology
Issue number29
StatePublished - Oct 10 2014

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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