Fiche publication
Date publication
février 2010
Auteurs
Membres identifiés du Cancéropôle Est :
Pr MAYNADIE Marc
Tous les auteurs :
Maury S, Huguet F, Leguay T, Lacombe F, Maynadie M, Girard S, de Labarthe A, Kuhlein E, Raffoux E, Thomas X, Chevallier P, Buzyn A, Delannoy A, Chalandon Y, Vernant JP, Rousselot P, Macintyre E, Ifrah N, Dombret H, Bene MC
Lien Pubmed
Résumé
The prognostic significance of CD20 expression in B-cell precursor acute lymphoblastic leukemia (BCP-ALL) has been mostly studied in children and yielded conflicting results. In 143 adults with Philadelphia chromosome-negative BCP-ALL treated in the multicentric GRAALL 2003 trial, CD20 positivity over 20% was observed in 32% of patients. While not influencing complete remission achievement, CD20 expression was associated with a higher cumulative incidence of relapse (CIR) at 42 months (P=0.04), independently of the ALL high-risk subset (P=0.025). Notably, the negative impact of CD20 expression on CIR was only observed in patients with a white blood cell count (WBC) over 30x10(9)/L (P=0.006), while not in those with a lower WBC. In the former subgroup, this impact translated into lower event-free survival (15% vs. 59% at 42 months, P=0.003). CD20 expression thus appears to be associated with a worse outcome, which reinforces the interest of evaluating rituximab combined to chemotherapy in CD20-positive adult BCP-ALL. ClinicalTrials.gov ID, NCT00222027.
Référence
Haematologica. 2010 Feb;95(2):324-8
