Allogeneic haematopoietic cell transplantation offers the chance of cure for patients with transformed follicular lymphoma
In patients with follicular lymphoma, secondary transformation to aggressive lymphoma (tFL) implies a poor prognosis. In principle, allogeneic haematopoietic cell transplantation (allo-HCT) offers a chance of cure for tFL but is rarely practiced. Aim of this retrospective multicenter study was to define the actual significance of allo-HCT in treatment of tFL.
The database of the German Registry for Stem Cell Transplantation (DRST) was screened for patients who underwent allo-HCT for tFL 1998–2008. Confirmation of tFL-diagnosis by local and/or pathologists of the National NHL Board was mandatory for enrolment. Gaps in reported EBMT Minimum Essential Data datasets (MED-A) were filled by local DRST data managers. Relevant HCT outcome variables were evaluated by uni- and multivariate statistical analysis.
Median age of enrolled 33 patients was 51 years with a post allo-HCT median follow-up of 7.1 years of surviving patients. At time of HCT 24/33 patients had chemosensitive disease. In 24/33 patients reduced intensity conditioning (RIC) was used. Estimated 1, 2, 5-year overall survival (OS) and event-free survival rates were 49/39/33, and 33/30/24%. Cumulative 100 days non-relapse mortality was 25%. Chemosensitive disease, RIC, and limited chronic GvHD were identified as independent prognostic factors for OS.
Allo-HCT offers the chance of cure for tFL.
KeywordsAllogeneic HCT Transformed follicular lymphoma Prognostic factors Cure
The authors would like to thank Franziska Hanke, Helga Neidlinger, and Karin Fuchs, who are the data managers of the DRST, and to all local data managers of the participating transplant units. Last but not least, thanks to all local as well as reference pathologists for their valuable support of this study. The DRST is/has been supported by grants from the “Deutsche Krebshilfe e.V.”, “Deutsche Jose-Carreras Leukämie Stiftung e.V.”, “DKMS”, and “Alfred and Angelika Gutermuth-Stiftung”.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
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