Phase 1 study of veliparib (ABT-888), a poly (ADP-ribose) polymerase inhibitor, with carboplatin and paclitaxel in advanced solid malignancies

Leonard J. Appleman, Jan H. Beumer, Yixing Jiang, Yan Lin, Fei Ding, Shannon Puhalla, Leigh Swartz, Taofeek K. Owonikoko, R. Donald Harvey, Ronald Stoller, Daniel P. Petro, Hussein A. Tawbi, Athanassios Argiris, Sandra Strychor, Marie Pouquet, Brian Kiesel, Alice P. Chen, David Gandara, Chandra P. Belani, Edward ChuSuresh S. Ramalingam

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Purpose: Veliparib is an oral inhibitor of poly (ADP-ribose) polymerase (PARP)-1 and -2. PARP-1 expression may be increased in cancer, and this increase confers resistance to cytotoxic agents. We aimed to determine the recommended phase 2 dose (RP2D), maximum tolerated dose (MTD), dose-limiting toxicity (DLT), and pharmacokinetics (PK) of veliparib combined with paclitaxel and carboplatin. Methods: Eligibility criteria included patients with advanced solid tumors treated with ≤ 3 prior regimens. Paclitaxel and carboplatin were administered on day 3 of a 21-day cycle. Veliparib was given PO BID days 1–7, except for cycle 1 in the first 46 patients to serve as control for toxicity and PK. A standard “3 + 3” design started veliparib at 10 mg BID, paclitaxel at 150 mg/m2, and carboplatin AUC 6. The pharmacokinetic (PK) disposition of veliparib, paclitaxel, and carboplatin was determined by LC–MS/MS and AAS during cycles 1 and 2. Results: Seventy-three patients were enrolled. Toxicities were as expected with carboplatin/paclitaxel chemotherapy, including neutropenia, thrombocytopenia, and peripheral neuropathy. DLTs were seen in two of seven evaluable patients at the maximum administered dose (MAD): veliparib 120 mg BID, paclitaxel 200 mg/m2, and carboplatin AUC 6 (febrile neutropenia, hyponatremia). The MTD and RP2D were determined to be veliparib 100 mg BID, paclitaxel 200 mg/m2, and carboplatin AUC 6. Median number of cycles of the three-agent combination was 4 (1–16). We observed 22 partial and 5 complete responses. Veliparib did not affect paclitaxel or carboplatin PK disposition. Conclusion: Veliparib, paclitaxel, and carboplatin were well tolerated and demonstrated promising antitumor activity.

Original languageEnglish (US)
Pages (from-to)1289-1301
Number of pages13
JournalCancer Chemotherapy and Pharmacology
Issue number6
StatePublished - Dec 1 2019

All Science Journal Classification (ASJC) codes

  • Oncology
  • Toxicology
  • Pharmacology
  • Cancer Research
  • Pharmacology (medical)


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