Abstract
Mannose-binding lectin (MBL)-deficient children with cancer may benefit from substitution of the innate immune protein MBL during chemotherapy-induced neutropaenia. We determined the safety and pharmacokinetics of MBL substitution in a phase II study in MBL-deficient children. Twelve MBL-deficient children with cancer (aged 0-12 years) received infusions of plasma-derived MBL once, or twice weekly during a chemotherapy-induced neutropaenic episode (range: 1-4 weeks). Four patients participated multiple times. Target levels of 1.0 microg/ml were considered therapeutic. In total, 65 MBL infusions were given. No MBL-related adverse reactions were observed, and the observed trough level was 1.06 microg/ml (range: 0.66-2.05 microg/ml). Pharmacokinetics were not related to age after correction for body weight. The half-life of MBL, for a child of 25 kg, was 36.4h (range: 23.7-66.6h). No anti-MBL antibodies were measured 4 weeks after each MBL course. Substitution therapy with MBL-SSI twice weekly was safe and resulted in trough levels considered protective.
Original language | English |
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Pages (from-to) | 505-12 |
Number of pages | 8 |
Journal | European Journal of Cancer |
Volume | 45 |
Issue number | 4 |
DOIs | |
Publication status | Published - Mar 2009 |
Keywords
- Antineoplastic Agents/adverse effects
- Child
- Child, Preschool
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Female
- Humans
- Infant
- Infant, Newborn
- Male
- Mannose-Binding Lectin/adverse effects
- Neutropenia/blood
- Patient Selection
- Prospective Studies