Evaluation of the effect of new formulation, food, or a proton pump inhibitor on the relative bioavailability of the smoothened inhibitor glasdegib (PF-04449913) in healthy volunteers.
Cancer Chemother Pharmacol
; 80(6): 1249-1260, 2017 Dec.
Article
em En
| MEDLINE
| ID: mdl-29086063
ABSTRACT
PURPOSE:
This phase I open-label study investigated the oral bioavailability of two novel maleate salt-based glasdegib (PF-04449913) tablet formulations (small- and large-particle size) relative to the current clinical formulation (diHCl salt-based). In addition, the effect of a gastric pH-altering agent (rabeprazole) and food on the pharmacokinetics of the large-particle size formulation of glasdegib were evaluated. The pharmacokinetics of glasdegib oral solution was also assessed.METHODS:
Thirty-four healthy subjects received glasdegib 100 mg as three different formulations in the fasted state (diHCl salt or small- or large-particle size maleate formulation); 13 received the large-particle maleate formulation (fed), and 14 concurrently with rabeprazole (fasted); six subjects received glasdegib 50 mg oral solution (fasted).RESULTS:
For both new tablet formulations of glasdegib, ratios (TestReference) of adjusted geometric means (90% confidence interval) of area under the concentration-time curve from 0 to infinity and maximum plasma concentration were within 80-125% compared with the diHCl formulation (fasted). For the large-particle size formulation (fed), these ratios were 86.3% (81.0-92.0%) and 75.7% (65.3-87.7%), respectively, compared with fasted. When the large-particle maleate formulation was administered concurrently with rabeprazole versus alone (fasted), these ratios were 111.9% (102.8-121.9%) and 87.2% (75.9-100.3%), respectively. The pharmacokinetics of oral solution was similar to the tablet.CONCLUSIONS:
The maleate salt-based tablet formulations were bioequivalent to the diHCl tablet formulation. The extent of the observed effect of a high-fat, high-calorie meal or concurrent rabeprazole treatment on glasdegib exposure is not considered clinically meaningful.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Compostos de Fenilureia
/
Benzimidazóis
/
Inibidores da Bomba de Prótons
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article