Clinical pharmacodynamic/exposure characterisation of the multikinase inhibitor ilorasertib (ABT-348) in a phase 1 dose-escalation trial

Autor: Gerald Steven Falchook, Peter Ansell, Wijith Munasinghe, Mark J. Ratain, Razelle Kurzrock, Michael L. Maitland, Sanja Karovic, David S. Hong, Ly M. Nguyen, Elizabeth Hoening, Guinan K. Lian, Joann P. Palma, Linda Janisch, Mark D. McKee, Cherrie K. Donawho, Sarina Anne Piha-Paul, Shekman Wong
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Maitland, ML; Piha-Paul, S; Falchook, G; Kurzrock, R; Nguyen, L; Janisch, L; et al.(2018). Clinical pharmacodynamic/exposure characterisation of the multikinase inhibitor ilorasertib (ABT-348) in a phase 1 dose-escalation trial. BRITISH JOURNAL OF CANCER, 118(8), 1042-1050. doi: 10.1038/s41416-018-0020-2. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/6cc4x3jv
British Journal of Cancer
British journal of cancer, vol 118, iss 8
DOI: 10.1038/s41416-018-0020-2.
Popis: BACKGROUND:Ilorasertib (ABT-348) inhibits Aurora and VEGF receptor (VEGFR) kinases. Patients with advanced solid tumours participated in a phase 1 dose-escalation trial to profile the safety, tolerability, and pharmacokinetics of ilorasertib. METHODS:Ilorasertib monotherapy was administered at 10-180 mg orally once daily (Arm I, n = 23), 40-340 mg orally twice daily (Arm II, n = 28), or 8-32 mg intravenously once daily (Arm III, n = 7), on days 1, 8, and 15 of each 28-day cycle. RESULTS:Dose-limiting toxicities were predominantly related to VEGFR inhibition. The most frequent treatment-emergent adverse events ( > 30%) were: fatigue (48%), anorexia (34%), and hypertension (34%). Pharmacodynamic markers suggested that ilorasertib engaged VEGFR2 and Aurora B kinase, with the VEGFR2 effects reached at lower doses and exposures than Aurora inhibition effects. In Arm II, one basal cell carcinoma patient (40 mg twice daily (BID)) and one patient with adenocarcinoma of unknown primary site (230 mg BID) had partial responses. CONCLUSIONS:In patients with advanced solid tumours, ilorasertib treatment resulted in evidence of engagement of the intended targets and antitumour activity, but with maximum inhibition of VEGFR family kinases occurring at lower exposures than typically required for inhibition of Aurora B in tissue. CLINICAL TRIAL REGISTRATION:NCT01110486.
Databáze: OpenAIRE