Relationship between pharmacokinetic profile of subcutaneously administered alemtuzumab and clinical response in patients with chronic lymphocytic leukemia.

Abstract:

:Alemtuzumab serum levels and clinical response after subcutaneous administration (10 mg 3 times/week for six weeks) have been explored in 29 chronic lymphocytic leukemia patients receiving the monoclonal antibody as consolidation. Serum concentrations after each administration gradually increased during the first week and more markedly during weeks 2 and 3, approaching the steady-state at week 6. Absorption continued slowly through the tissues for about 2-3 weeks after the last administration, starting to decrease thereafter. Difference between Responders and Non-responders was statistically significant: maximal concentration (Cmax) was 1.69 μg/mL vs. 0.44 μg/mL; concentration before subcutaneous administration (Cpre-dose) on day 15 was 0.7 vs. 0.21 μg/mL, area under curve (AUC0-12h) was 11.09 vs. 2.26 μgxh/mL for Responders and Non-responders, respectively. Higher systemic exposure to alemtuzumab correlated with a better clinical response and minimal residual disease. Results suggest that an adjusted schedule according to serum level could improve clinical outcome of patients receiving subcutaneous alemtuzumab.

journal_name

Haematologica

journal_title

Haematologica

authors

Montagna M,Montillo M,Avanzini MA,Tinelli C,Tedeschi A,Visai L,Ricci F,Vismara E,Morra E,Regazzi M

doi

10.3324/haematol.2010.033159

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

932-6

issue

6

eissn

0390-6078

issn

1592-8721

pii

haematol.2010.033159

journal_volume

96

pub_type

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