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Ref Type Journal Article
PMID (25377158)
Authors Noh YH, Lim HS, Jung JA, Song TH, Bae KS
Title Population pharmacokinetics of HM781-36 (poziotinib), pan-human EGF receptor (HER) inhibitor, and its two metabolites in patients with advanced solid malignancies.
Journal Cancer chemotherapy and pharmacology
Vol 75
Issue 1
Date 2015 Jan
Abstract Text To develop a population pharmacokinetic (PK) model for HM781-36 (poziotinib) and its metabolites in cancer patients.Blood samples were collected from three phase I studies in which fifty-two patients received oral HM781-36B tablets (0.5-32 mg) once daily for 2 weeks, and another 20 patients received oral HM781-36B tablets (12, 16, 18, 24 mg) in fasting (12 patients) or fed (eight patients) state once daily for 4 weeks. Nonlinear mixed effect modeling was employed to develop the population pharmacokinetic model.HM781-36 PK was ascribed to a two-compartment model and HM781-36-M1/-M2 PK to one-compartment model. HM781-36 oral absorption was characterized by first-order input (absorption rate constant: 1.45 ± 0.23 h⁻¹). The central volume of distribution (185 ± 12.7 L) was influenced significantly by body weight. The absorption rate constant was influenced by food. The typical HM781-36 apparent clearance was 34.5 L/h (29.4 %CV), with an apparent peripheral volume of distribution of 164 L (53.5 %CV). Other covariates did not significantly further explain the PKs of HM781-36.The proposed model suggests that HM781-36 PKs are consistent across most solid tumor types, and that the absorption process of HM781-36 is affected by the fed state before dosing. HM781-36 PKs are not complicated by patient factors, other than body weight.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown Advanced Solid Tumor not applicable Poziotinib Phase I Actionable In a Phase I trial, Poziotinib (HM781-36B) displayed favorable pharmacokinetics in patients with advanced solid tumors (PMID: 25377158). 25377158