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Prolonged administration of erythropoietin increases erythroid response rate in myelodysplastic syndromes: a phase II trial in 281 patients
Author(s) -
Terpos Evangelos,
Mougiou Athina,
Kouraklis Alexandra,
Chatzivassili Aria,
Michalis Evridiki,
Giannakoulas Nicholas,
Manioudaki Eleni,
Lazaridou Anna,
Bakaloudi Vassiliki,
Protopappa Maria,
Liapi Dimitra,
Grouzi Elisavet,
Parharidou Agapi,
Symeonidis Argyris,
Kokkini Garoufalia,
Laoutaris Nikolaos P.,
Vaipoulos George,
Anagnostopoulos Nikolaos I.,
Christakis John I.,
Meletis John,
Bourantas Konstantinos L.,
Zoumbos Nicholas C.,
Yataganas Xenophon,
Viniou for The Greek MDS Study Group NoraAthina
Publication year - 2002
Publication title -
british journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.907
H-Index - 186
eISSN - 1365-2141
pISSN - 0007-1048
DOI - 10.1046/j.1365-2141.2002.03583.x
Subject(s) - medicine , myelodysplastic syndromes , erythropoietin , gastroenterology , refractory (planetary science) , anemia , relative risk , bone marrow , confidence interval , biology , astrobiology
Summary. Treatment with recombinant human erythropoietin (rHuEpo) improves anaemia in approximately 20% of patients with myelodysplastic syndromes (MDS). We investigated the potential advantage of a prolonged administration of rHuEpo to achieve higher erythroid response rates (RR) in 281 MDS patients: 118 with refractory anaemia (RA), 77 with refractory anaemia and ringed sideroblasts (RARS), 59 with refractory anaemia with excess of blasts and blast count < 10% (RAEB‐I), and 27 with RAEB and blast count between 11–20% (RAEB‐II). rHuEpo was given subcutaneously at a dose of 150 U/kg thrice weekly, for a minimum of 26 weeks. Response to treatment was evaluated after 12 and 26 weeks of therapy. The overall RR was 45·1%; the RR for RA, RARS, RAEB‐I and RAEB‐II were 48·3%, 58·4%, 33·8% and 13% respectively. A significant increase in RR was observed at week 26 in RA, RARS and RAEB‐I patients, as the response probability increased with treatment duration. The RR was higher in the good cytogenetic prognostic group and serum Epo level of > 150 U/l at baseline predicted for non‐response. The median duration of response was 68 weeks and the overall risk of leukaemic transformation was 21·7%. These results suggest that prolonged administration of rHuEpo produces high and long‐lasting erythroid RR in MDS patients with low blast counts, particularly in those with pretreatment serum Epo levels of < 150 U/l and good cytogenetic prognosis.