PMID- 34795408 OWN - NLM STAT- MEDLINE DCOM- 20220310 LR - 20221024 IS - 1532-1827 (Electronic) IS - 0007-0920 (Print) IS - 0007-0920 (Linking) VI - 126 IP - 4 DP - 2022 Mar TI - Phase 1A/1B dose-escalation and -expansion study to evaluate the safety, pharmacokinetics, food effects and antitumor activity of pamiparib in advanced solid tumours. PG - 576-585 LID - 10.1038/s41416-021-01632-2 [doi] AB - BACKGROUND: Pamiparib, a PARP1/2 inhibitor, demonstrated antitumor activity in preclinical models. METHODS: This Phase 1A/1B dose-escalation/dose-expansion study enrolled adults (>/=18 years) with advanced/metastatic cancer. The dose-escalation phase evaluated the recommended Phase 2 dose (RP2D), maximum tolerated dose (MTD), and pharmacokinetics; the dose-expansion phase evaluated the antitumor activity and food effects. RESULTS: Patients (N = 101) were enrolled in dose-escalation (n = 64) and dose-expansion (n = 37). During BID dose-escalation, dose-limiting toxicities were Grade 2 nausea (n = 1, 40 mg; n = 1, 80 mg); Grade 2 nausea and Grade 2 anorexia (n = 1, 120 mg), Grade 2 nausea, Grade 3 fatigue and Grade 3 paraesthesia (n = 1, 120 mg); MTD was 80 mg BID and RP2D was 60 mg BID. Common adverse events (AEs) were nausea (69.3%), fatigue (48.5%) and anaemia (35.6%); the most common Grade >/=3 AE was anaemia (24.8%). There was a dose-proportional increase in pamiparib exposure; no food effects on pharmacokinetics were observed. In the efficacy-evaluable population (n = 77), objective response rate (ORR) was 27.3% (95% CI, 17.7-38.6%). Median duration of response was 14.9 months (95% CI, 8.7-26.3). In the epithelial ovarian cancer (EOC)-evaluable population (n = 51), ORR was 41.2% (95% CI, 27.6-55.8%). CONCLUSIONS: Pamiparib was tolerated with manageable AEs, and antitumor activity was observed in patients with EOC. CLINICALTRIALS. GOV IDENTIFIER: NCT02361723. CI - (c) 2021. The Authors. FAU - Lickliter, Jason D AU - Lickliter JD AD - Nucleus Network, Melbourne, VIC, Australia. FAU - Voskoboynik, Mark AU - Voskoboynik M AD - Nucleus Network, Melbourne, VIC, Australia. AD - Central Clinical School, Monash University, Melbourne, VIC, Australia. FAU - Mileshkin, Linda AU - Mileshkin L AD - Peter MacCallum Cancer Centre-East Melbourne, East Melbourne, VIC, Australia. FAU - Gan, Hui K AU - Gan HK AD - Olivia Newton-John Cancer Wellness and Research Centre, Austin Hospital, Heidelberg, Melbourne, VIC, Australia. AD - La Trobe University School of Cancer Medicine, Heidelberg, VIC, Australia. AD - Department of Medicine, University of Melbourne, Heidelberg, VIC, Australia. FAU - Kichenadasse, Ganessan AU - Kichenadasse G AUID- ORCID: 0000-0001-9923-5149 AD - Flinders Centre for Innovation in Cancer, Flinders Medical Centre, Bedford Park, SA, Australia. FAU - Zhang, Kathy AU - Zhang K AD - BeiGene USA, Inc., San Mateo, CA, USA. FAU - Zhang, Maggie AU - Zhang M AD - BeiGene USA, Inc., San Mateo, CA, USA. FAU - Tang, Zhiyu AU - Tang Z AD - BeiGene USA, Inc., San Mateo, CA, USA. FAU - Millward, Michael AU - Millward M AUID- ORCID: 0000-0002-1744-1617 AD - Linear Clinical Research & University of Western Australia, Nedlands, WA, Australia. michael.millward@uwa.edu.au. LA - eng SI - ClinicalTrials.gov/NCT02361723 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20211118 PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (Fluorenes) RN - 0 (Poly(ADP-ribose) Polymerase Inhibitors) RN - 8375F9S90C (pamiparib) SB - IM EIN - Br J Cancer. 2021 Dec 20;:. PMID: 34931042 MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Fluorenes/*administration & dosage/adverse effects/pharmacokinetics MH - Food MH - Humans MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Neoplasms/*drug therapy MH - Poly(ADP-ribose) Polymerase Inhibitors/*administration & dosage/adverse effects/pharmacokinetics MH - Survival Analysis MH - Treatment Outcome PMC - PMC8854719 COIS- Dr. JDL has no competing interests to declare. Dr. MV reports personal fees from Merck Sharp & Dohme and personal fees from AstraZeneca outside the submitted work. Dr. LM reports other support from BeiGene outside the submitted work. Dr. HG reports personal fees from Merck Serono, Eisai, and Bristol-Myers Squibb outside the submitted work. Dr. GK has nothing to disclose. Dr. KZ, Dr. MZ and Dr. ZT are employees with stock grant or options in BeiGene, Ltd. Dr. MM reports personal fees and non-financial support from AstraZeneca, Bristol-Myers Squibb, and Roche; and personal fees from Merck Sharp & Dohme, Pfizer and Novartis outside the submitted work. EDAT- 2021/11/20 06:00 MHDA- 2022/03/11 06:00 PMCR- 2021/11/18 CRDT- 2021/11/19 06:49 PHST- 2021/07/19 00:00 [received] PHST- 2021/11/03 00:00 [accepted] PHST- 2021/10/25 00:00 [revised] PHST- 2021/11/20 06:00 [pubmed] PHST- 2022/03/11 06:00 [medline] PHST- 2021/11/19 06:49 [entrez] PHST- 2021/11/18 00:00 [pmc-release] AID - 10.1038/s41416-021-01632-2 [pii] AID - 1632 [pii] AID - 10.1038/s41416-021-01632-2 [doi] PST - ppublish SO - Br J Cancer. 2022 Mar;126(4):576-585. doi: 10.1038/s41416-021-01632-2. Epub 2021 Nov 18.