PMID- 30887180 OWN - NLM STAT- MEDLINE DCOM- 20200212 LR - 20200212 IS - 1432-0843 (Electronic) IS - 0344-5704 (Linking) VI - 83 IP - 5 DP - 2019 May TI - Pharmacokinetics and safety of olaparib tablets as monotherapy and in combination with paclitaxel: results of a Phase I study in Chinese patients with advanced solid tumours. PG - 963-974 LID - 10.1007/s00280-019-03799-1 [doi] AB - PURPOSE: Chinese patients have been enrolled in multiple Phase III trials of the poly(ADP-ribose) polymerase (PARP) inhibitor olaparib (Lynparza); however, the pharmacokinetic (PK) profile of olaparib has not been investigated in this population. This two-part, open-label Phase I study was, therefore, carried out to determine the PK and safety profile of olaparib (tablet formulation) in Chinese patients with advanced solid tumours as monotherapy and in combination with paclitaxel (NCT02430311). METHODS: The PK profile of olaparib 300 mg (twice daily [bid]; Cohort 1) as monotherapy after a single dose and at steady state, and 100 mg (bid; Cohort 2) as monotherapy (single dose and at steady state) and in combination (at steady state) with weekly paclitaxel (80 mg/m(2)) was assessed during Part A. Patients could continue to receive treatment (monotherapy, Cohort 1; combination therapy, Cohort 2) in Part B, which assessed safety and tolerability. RESULTS: Twenty and 16 patients were enrolled into Cohorts 1 and 2, respectively. Steady-state olaparib exposure increased slightly less than proportionally with increasing monotherapy dose and inter-patient variability was high. A statistically significant decrease in olaparib exposure was seen when given in combination with paclitaxel. Discontinuation due to adverse events (AEs) was rare and haematological AEs were more common in patients receiving combination treatment. CONCLUSIONS: The PK and safety profile of olaparib monotherapy in Chinese patients is consistent with that seen previously in Western and Japanese patients, and the recommended Phase III monotherapy tablet dose (300 mg bid) is suitable for use in this population. FAU - Yuan, Peng AU - Yuan P AD - National Clinical Research Center for Cancer/Cancer Hospital, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), No. 17 Panjiayuan, Chaoyang District, Beijing, 100021, China. FAU - Shentu, Jianzhong AU - Shentu J AD - Research Center for Clinical Pharmacy, State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital of Zhejiang University, Zhejiang, China. FAU - Xu, Jianming AU - Xu J AD - Affiliated Hospital Cancer Center, The 307th Hospital of Chinese People's Liberation Army, Academy of Military Medical Sciences, Beijing, China. FAU - Burke, Wendy AU - Burke W AD - Covance Clinical Research Unit, Leeds, UK. FAU - Hsu, Kate AU - Hsu K AD - AstraZeneca, Shanghai, China. FAU - Learoyd, Maria AU - Learoyd M AD - AstraZeneca, Cambridge, UK. FAU - Zhu, Min AU - Zhu M AD - AstraZeneca, Shanghai, China. FAU - Xu, Binghe AU - Xu B AD - National Clinical Research Center for Cancer/Cancer Hospital, National Cancer Center, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), No. 17 Panjiayuan, Chaoyang District, Beijing, 100021, China. xubinghe@medmail.com.cn. LA - eng SI - ClinicalTrials.gov/NCT02430311 PT - Clinical Trial, Phase I PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190318 PL - Germany TA - Cancer Chemother Pharmacol JT - Cancer chemotherapy and pharmacology JID - 7806519 RN - 0 (Phthalazines) RN - 0 (Piperazines) RN - 0 (Poly(ADP-ribose) Polymerase Inhibitors) RN - 0 (Tablets) RN - P88XT4IS4D (Paclitaxel) RN - WOH1JD9AR8 (olaparib) SB - IM MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/*administration & dosage/adverse effects/pharmacokinetics MH - China MH - Female MH - Humans MH - Male MH - Middle Aged MH - Neoplasms/*drug therapy MH - Paclitaxel/administration & dosage MH - Phthalazines/*administration & dosage/adverse effects/pharmacokinetics MH - Piperazines/*administration & dosage/adverse effects/pharmacokinetics MH - Poly(ADP-ribose) Polymerase Inhibitors/*administration & dosage/adverse effects/pharmacokinetics MH - Tablets OTO - NOTNLM OT - Chinese patients OT - Olaparib OT - PARP inhibitor OT - Paclitaxel OT - Pharmacokinetics OT - Safety EDAT- 2019/03/20 06:00 MHDA- 2020/02/13 06:00 CRDT- 2019/03/20 06:00 PHST- 2018/10/17 00:00 [received] PHST- 2019/02/11 00:00 [accepted] PHST- 2019/03/20 06:00 [pubmed] PHST- 2020/02/13 06:00 [medline] PHST- 2019/03/20 06:00 [entrez] AID - 10.1007/s00280-019-03799-1 [pii] AID - 10.1007/s00280-019-03799-1 [doi] PST - ppublish SO - Cancer Chemother Pharmacol. 2019 May;83(5):963-974. doi: 10.1007/s00280-019-03799-1. Epub 2019 Mar 18.