Phase 0 Clinical Trial of the Poly (ADP-Ribose) Polymerase Inhibitor ABT-888 in Patients With Advanced Malignancies

We conducted the first phase 0 clinical trial in oncology of a therapeutic agent under the Exploratory Investigational New Drug Guidance of the US Food and Drug Administration. It was a first-in-human study of the poly (ADP-ribose) polymerase (PARP) inhibitor ABT-888 in patients with advanced malign...

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Veröffentlicht in:Journal of clinical oncology 2009-06, Vol.27 (16), p.2705-2711
Hauptverfasser: KUMMAR, Shivaani, KINDERS, Robert, MURGO, Anthony J, COLLINS, Jerry, STEINBERG, Seth M, ELIOPOULOS, Helen, GIRANDA, Vincent L, GORDON, Gary, HELMAN, Lee, WILTROUT, Robert, TOMASZEWSKI, Joseph E, DOROSHOW, James H, GUTIERREZ, Martin E, RUBINSTEIN, Larry, PARCHMENT, Ralph E, PHILLIPS, Lawrence R, JIUPING JI, MONKS, Anne, LOW, Jennifer A, CHEN, Alice
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container_end_page 2711
container_issue 16
container_start_page 2705
container_title Journal of clinical oncology
container_volume 27
creator KUMMAR, Shivaani
KINDERS, Robert
MURGO, Anthony J
COLLINS, Jerry
STEINBERG, Seth M
ELIOPOULOS, Helen
GIRANDA, Vincent L
GORDON, Gary
HELMAN, Lee
WILTROUT, Robert
TOMASZEWSKI, Joseph E
DOROSHOW, James H
GUTIERREZ, Martin E
RUBINSTEIN, Larry
PARCHMENT, Ralph E
PHILLIPS, Lawrence R
JIUPING JI
MONKS, Anne
LOW, Jennifer A
CHEN, Alice
description We conducted the first phase 0 clinical trial in oncology of a therapeutic agent under the Exploratory Investigational New Drug Guidance of the US Food and Drug Administration. It was a first-in-human study of the poly (ADP-ribose) polymerase (PARP) inhibitor ABT-888 in patients with advanced malignancies. ABT-888 was administered as a single oral dose of 10, 25, or 50 mg to determine the dose range and time course over which ABT-888 inhibits PARP activity in tumor samples and peripheral blood mononuclear cells, and to evaluate ABT-888 pharmacokinetics. Blood samples and tumor biopsies were obtained pre- and postdrug administration for evaluation of PARP activity and pharmacokinetics. A novel statistical approach was developed and utilized to study pharmacodynamic modulation as the primary end point for trials of limited sample size. Thirteen patients with advanced malignancies received the study drug; nine patients underwent paired tumor biopsies. ABT-888 demonstrated good oral bioavailability and was well tolerated. Statistically significant inhibition of poly (ADP-ribose) levels was observed in tumor biopsies and peripheral blood mononuclear cells at the 25-mg and 50-mg dose levels. Within 5 months of study activation, we obtained pivotal biochemical and pharmacokinetic data that have guided the design of subsequent phase I trials of ABT-888 in combination with DNA-damaging agents. In addition to accelerating the development of ABT-888, the rapid conclusion of this trial demonstrates the feasibility of conducting proof-of-principle phase 0 trials as part of an alternative paradigm for early drug development in oncology.
doi_str_mv 10.1200/JCO.2008.19.7681
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It was a first-in-human study of the poly (ADP-ribose) polymerase (PARP) inhibitor ABT-888 in patients with advanced malignancies. ABT-888 was administered as a single oral dose of 10, 25, or 50 mg to determine the dose range and time course over which ABT-888 inhibits PARP activity in tumor samples and peripheral blood mononuclear cells, and to evaluate ABT-888 pharmacokinetics. Blood samples and tumor biopsies were obtained pre- and postdrug administration for evaluation of PARP activity and pharmacokinetics. A novel statistical approach was developed and utilized to study pharmacodynamic modulation as the primary end point for trials of limited sample size. Thirteen patients with advanced malignancies received the study drug; nine patients underwent paired tumor biopsies. ABT-888 demonstrated good oral bioavailability and was well tolerated. Statistically significant inhibition of poly (ADP-ribose) levels was observed in tumor biopsies and peripheral blood mononuclear cells at the 25-mg and 50-mg dose levels. Within 5 months of study activation, we obtained pivotal biochemical and pharmacokinetic data that have guided the design of subsequent phase I trials of ABT-888 in combination with DNA-damaging agents. 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subjects Administration, Oral
Aged
Antineoplastic Agents - administration & dosage
Antineoplastic Agents - pharmacokinetics
Antineoplastic Agents - therapeutic use
Benzimidazoles - administration & dosage
Benzimidazoles - pharmacokinetics
Benzimidazoles - therapeutic use
Biological and medical sciences
Biological Availability
Biopsy
Clinical Trials, Phase I as Topic
Dose-Response Relationship, Drug
Enzyme Inhibitors - administration & dosage
Enzyme Inhibitors - pharmacokinetics
Enzyme Inhibitors - therapeutic use
Feasibility Studies
Female
Humans
Leukocytes, Mononuclear - drug effects
Leukocytes, Mononuclear - enzymology
Male
Medical sciences
Middle Aged
Neoplasms - drug therapy
Neoplasms - enzymology
Neoplasms - pathology
Original Reports
Poly(ADP-ribose) Polymerase Inhibitors
Research Design
Treatment Outcome
Tumors
title Phase 0 Clinical Trial of the Poly (ADP-Ribose) Polymerase Inhibitor ABT-888 in Patients With Advanced Malignancies
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