Weekly nab-Rapamycin in patients with advanced nonhematologic malignancies: final results of a phase I trial. Clin Cancer Res 2013 Oct 01;19(19):5474-84
Date
10/04/2013Pubmed ID
24089446Pubmed Central ID
PMC3935482DOI
10.1158/1078-0432.CCR-12-3110Scopus ID
2-s2.0-84886413865 (requires institutional sign-in at Scopus site) 71 CitationsAbstract
PURPOSE: This dose-finding phase I study investigated the maximum-tolerated dose (MTD) and safety of weekly nanoparticle albumin-bound rapamycin (nab-rapamycin) in patients with untreatable advanced nonhematologic malignancies.
EXPERIMENTAL DESIGN: nab-Rapamycin was administered weekly for 3 weeks followed by 1 week of rest, with a starting dose of 45 mg/m(2). Additional doses were 56.25, 100, 150, and 125 mg/m(2).
RESULTS: Of 27 enrolled patients, 26 were treated. Two dose-limiting toxicities (DLT) occurred at 150 mg/m(2) [grade 3 aspartate aminotransferase (AST) elevation and grade 4 thrombocytopenia], and two DLTs occurred at 125 mg/m(2) (grade 3 suicidal ideation and grade 3 hypophosphatemia). Thus, the MTD was declared at 100 mg/m(2). Most treatment-related adverse events (TRAE) were grade 1/2, including thrombocytopenia (58%), hypokalemia (23%), mucositis (38%), fatigue (27%), rash (23%), diarrhea (23%), nausea (19%), anemia (19%), hypophosphatemia (19%), neutropenia (15%), and hypertriglyceridemia (15%). Only one grade 3 nonhematologic TRAE (dyspnea) and one grade 3 hematologic event (anemia) occurred at the MTD. One patient with kidney cancer had a partial response and 2 patients remained on study for 365 days (patient with mesothelioma) and 238 days (patient with neuroendocrine tumor). The peak concentration (Cmax) and area under the concentration-time curve (AUC) of rapamycin increased with dose between 45 and 150 mg/m(2), except for a relatively low AUC at 125 mg/m(2). nab-Rapamycin significantly inhibited mTOR targets S6K and 4EBP1.
CONCLUSIONS: The clinical dose of single-agent nab-rapamycin was established at 100 mg/m(2) weekly (3 of 4 weeks) given intravenously, which was well tolerated with preliminary evidence of response and stable disease, and produced a fairly dose-proportional pharmacokinetic profile in patients with unresectable advanced nonhematologic malignancies.
Author List
Gonzalez-Angulo AM, Meric-Bernstam F, Chawla S, Falchook G, Hong D, Akcakanat A, Chen H, Naing A, Fu S, Wheler J, Moulder S, Helgason T, Li S, Elias I, Desai N, Kurzrock RAuthor
Razelle Kurzrock MD Center Associate Director, Professor in the Medicine department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AdolescentAdult
Aged
Antibiotics, Antineoplastic
Drug Administration Schedule
Female
Humans
Male
Maximum Tolerated Dose
Middle Aged
Neoplasm Staging
Neoplasms
Sirolimus
Treatment Outcome
Young Adult
