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Erschienen in: memo - Magazine of European Medical Oncology 2/2015

01.06.2015 | case report

Potential impact of the hypomethylating agent 5-azacitidine on chronic lymphocytic leukemia with del(17)(p)/del(p53) and subsequent therapy-related acute myeloid leukemia without these aberrations: a case report

verfasst von: Prof. Michael Pfeilstöcker, MD, MBA, Rainer Weichselbaum, MD, Helmut Mühlberger, Elisabeth Menschel, MD, Felix Keil, MD

Erschienen in: memo - Magazine of European Medical Oncology | Ausgabe 2/2015

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Abstract

The patient presented here had a very poor prognosis due to previous chronic lymphocytic leukemia with unfavourable cytogenetics (deleted 17p and p53), therapy-related acute myeloid leukemia (intact 17p/p53), multiple pre-treatments (fludarabine, rituximab-CHOP, rituximab-bendamustine), advanced age (71 years) and several comorbidities—circumstances that usually do not allow high-dose chemotherapy or stem cell transplantation. Due to this unfavourable condition and reportedly poorer outcome of therapy-related acute myeloid leukemia relative to de novo acute myeloid leukemia with chemotherapy, treatment with the hypomethylating agent 5-azacitidine (Vidaza®), 75 mg/m2/day, subcutaneously for 7 days of 28-day cycles was started. Therapy was well tolerated and yielded a good response not only by eradicating the therapy-related acute myeloid leukemia but also by keeping the chronic lymphocytic leukemia under control for a rather long period of time. The simultaneous suppression and re-appearance of both the therapy-related acute myeloid leukemia with intact p53 and the chronic lymphocytic leukemia with deleted p53 suggests that hypomethylation by azacitidine attains tumour control by a mechanism that (i) is similar in the different tumours and (ii) acts independently of the p53 status. This case may serve as a model for disease progression mirrored in molecular and cytogenetic findings which are factored into treatment decisions.
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Metadaten
Titel
Potential impact of the hypomethylating agent 5-azacitidine on chronic lymphocytic leukemia with del(17)(p)/del(p53) and subsequent therapy-related acute myeloid leukemia without these aberrations: a case report
verfasst von
Prof. Michael Pfeilstöcker, MD, MBA
Rainer Weichselbaum, MD
Helmut Mühlberger
Elisabeth Menschel, MD
Felix Keil, MD
Publikationsdatum
01.06.2015
Verlag
Springer Vienna
Erschienen in
memo - Magazine of European Medical Oncology / Ausgabe 2/2015
Print ISSN: 1865-5041
Elektronische ISSN: 1865-5076
DOI
https://doi.org/10.1007/s12254-015-0201-0

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