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Lookup NU author(s): Huw ThomasORCiD, Professor Alan Calvert, Professor Alan Boddy
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Introduction: Cereport (RMP-7) is a novel bradykinin agonist which is being developed as a modulator of the blood-brain barrier (BBB). In order to investigate the pharmacokinetics of carboplatin in combination with Cereport, we performed pharmacological studies in conjunction with early clinical trials. Methods: Pharmacokinetic samples were collected from eight patients in a phase I study (Cereport 100-300 ng/kg) and ten patients in a phase II study (Cereport 300 ng/kg). Pharmacokinetic parameters for carboplatin were compared with respect to the dose of Cereport and with historical controls. Results: Cereport combined with carboplatin was well-tolerated, with mild haematological toxicities consistent with the target area under the concentration-time curve (AUC) of 7 mg/ml*min. Although the clearance of carboplatin was within the range reported for this drug alone, the addition of Cereport resulted in a higher than expected carboplatin AUC. This effect was related to the dose of Cereport in the phase I study (AUC values 104-133% of target, Spearman rank correlation coefficient = 0.71, P < 0.001). The higher than expected AUC value was confirmed in the phase II study (AUC values 106-189% of target). Conclusions: Co-administration of Cereport with carboplatin may result in a greater than predicted AUC. The mechanism of this possible interaction remains to be determined, although this did not result in any increased toxicity. Thus, the clinical potential of this combination in the treatment of brain tumours warrants further investigation.
Author(s): Thomas HD, Lind M, Ford J, Bleehen N, Calvert AH, Boddy AV
Publication type: Article
Publication status: Published
Journal: Cancer Chemotherapy and Pharmacology
Year: 2000
Volume: 45
Issue: 4
Pages: 284-290
Print publication date: 01/03/2000
ISSN (print): 0344-5704
ISSN (electronic): 1432-0843
URL: http://dx.doi.org/10.1007/s002800050042
DOI: 10.1007/s002800050042
PubMed id: 10755316
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