PMID- 29660598 OWN - NLM STAT- MEDLINE DCOM- 20190128 LR - 20191210 IS - 1879-0852 (Electronic) IS - 0959-8049 (Linking) VI - 96 DP - 2018 Jun TI - First-in human, phase 1, dose-escalation pharmacokinetic and pharmacodynamic study of the oral dual PI3K and mTORC1/2 inhibitor PQR309 in patients with advanced solid tumors (SAKK 67/13). PG - 6-16 LID - S0959-8049(18)30730-5 [pii] LID - 10.1016/j.ejca.2018.03.012 [doi] AB - BACKGROUND: PQR309 is an orally bioavailable, balanced pan-phosphatidylinositol-3-kinase (PI3K), mammalian target of rapamycin (mTOR) C1 and mTORC2 inhibitor. PATIENTS AND METHODS: This is an accelerated titration, 3 + 3 dose-escalation, open-label phase I trial of continuous once-daily (OD) PQR309 administration to evaluate the safety, pharmacokinetics (PK) and pharmacodynamics in patients with advanced solid tumours. Primary objectives were to determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D). RESULTS: Twenty-eight patients were included in six dosing cohorts and treated at a daily PQR309 dose ranging from 10 to 150 mg. Common adverse events (AEs; >/=30% patients) included fatigue, hyperglycaemia, nausea, diarrhoea, constipation, rash, anorexia and vomiting. Grade (G) 3 or 4 drug-related AEs were seen in 13 (46%) and three (11%) patients, respectively. Dose-limiting toxicity (DLT) was observed in two patients at 100 mg OD (>14-d interruption in PQR309 due to G3 rash, G2 hyperbilirubinaemia, G4 suicide attempt; dose reduction due to G3 fatigue, G2 diarrhoea, G4 transaminitis) and one patient at 80 mg (G3 hyperglycaemia >7 d). PK shows fast absorption (T(max) 1-2 h) and dose proportionality for C(max) and area under the curve. A partial response in a patient with metastatic thymus cancer, 24% disease volume reduction in a patient with sinonasal cancer and stable disease for more than 16 weeks in a patient with clear cell Bartholin's gland cancer were observed. CONCLUSION: The MTD and RP2D of PQR309 is 80 mg of orally OD. PK is dose-proportional. PD shows PI3K pathway phosphoprotein downregulation in paired tumour biopsies. Clinical activity was observed in patients with and without PI3K pathway dysregulation. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov # NCT01940133. CI - Copyright (c) 2018 Elsevier Ltd. All rights reserved. FAU - Wicki, Andreas AU - Wicki A AD - University Hospital Basel, Division of Oncology, Dept. of Biomedicine, Petersgraben 4, 4031 Basel, Switzerland. Electronic address: andreas.wicki@usb.ch. FAU - Brown, Nicholas AU - Brown N AD - University College London Hospitals NHS Trust, Gynecological Oncology Team, 235 Euston Road, London NW1 2BU, United Kingdom. FAU - Xyrafas, Alexandros AU - Xyrafas A AD - SAKK Coordinating Center, Effingerstrasse 33, 3008 Bern, Switzerland. FAU - Bize, Vincent AU - Bize V AD - SAKK Coordinating Center, Effingerstrasse 33, 3008 Bern, Switzerland. FAU - Hawle, Hanne AU - Hawle H AD - SAKK Coordinating Center, Effingerstrasse 33, 3008 Bern, Switzerland. FAU - Berardi, Simona AU - Berardi S AD - SAKK Coordinating Center, Effingerstrasse 33, 3008 Bern, Switzerland. FAU - Cmiljanovic, Natasa AU - Cmiljanovic N AD - Piqur Therapeutics AG, Hochbergstrasse 60C, 4057 Basel, Switzerland. FAU - Cmiljanovic, Vladimir AU - Cmiljanovic V AD - Piqur Therapeutics AG, Hochbergstrasse 60C, 4057 Basel, Switzerland. FAU - Stumm, Michael AU - Stumm M AD - Piqur Therapeutics AG, Hochbergstrasse 60C, 4057 Basel, Switzerland. FAU - Dimitrijevic, Sasa AU - Dimitrijevic S AD - Piqur Therapeutics AG, Hochbergstrasse 60C, 4057 Basel, Switzerland. FAU - Herrmann, Richard AU - Herrmann R AD - Piqur Therapeutics AG, Hochbergstrasse 60C, 4057 Basel, Switzerland. FAU - Pretre, Vincent AU - Pretre V AD - University Hospital Basel, Dept. of Biomedicine, Petersgraben 4, 4031 Basel, Switzerland. FAU - Ritschard, Reto AU - Ritschard R AD - University Hospital Basel, Dept. of Biomedicine, Petersgraben 4, 4031 Basel, Switzerland. FAU - Tzankov, Alexandar AU - Tzankov A AD - University Hospital Basel, Dept. of Pathology, Schonbeinstrasse 40, 4056 Basel, Switzerland. FAU - Hess, Viviane AU - Hess V AD - University Hospital Basel, Division of Oncology, Dept. of Biomedicine, Petersgraben 4, 4031 Basel, Switzerland. FAU - Childs, Alexa AU - Childs A AD - University College London Hospitals NHS Trust, Gynecological Oncology Team, 235 Euston Road, London NW1 2BU, United Kingdom. FAU - Hierro, Cinta AU - Hierro C AD - Vall d'Hebron Institut d'Oncologia, Universitat Autonoma of Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain. FAU - Rodon, Jordi AU - Rodon J AD - Vall d'Hebron Institut d'Oncologia, Universitat Autonoma of Barcelona, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain. FAU - Hess, Dagmar AU - Hess D AD - Cantonal Hospital St. Gallen, Dept. of Oncology and Hematology, Rorschacherstrasse 95, 9007 St. Gallen, Switzerland. FAU - Joerger, Markus AU - Joerger M AD - Cantonal Hospital St. Gallen, Dept. of Oncology and Hematology, Rorschacherstrasse 95, 9007 St. Gallen, Switzerland. FAU - von Moos, Roger AU - von Moos R AD - Cantonal Hospital Graubunden, Dept. of Oncology and Hematology, Loestrasse 170, 7000 Chur, Switzerland. FAU - Sessa, Cristiana AU - Sessa C AD - Istituto Oncologico della Svizzera Italiana, Ospedale San Giovanni, 6500 Bellinzona, Switzerland. FAU - Kristeleit, Rebecca AU - Kristeleit R AD - University College London Hospitals NHS Trust, Gynecological Oncology Team, 235 Euston Road, London NW1 2BU, United Kingdom. LA - eng SI - ClinicalTrials.gov/NCT01940133 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20180413 PL - England TA - Eur J Cancer JT - European journal of cancer (Oxford, England : 1990) JID - 9005373 RN - 0 (Antineoplastic Agents) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Protein Kinase Inhibitors) RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 2) SB - IM MH - Administration, Oral MH - Adult MH - Aged MH - Antineoplastic Agents/*administration & dosage/adverse effects/*pharmacokinetics MH - Dose-Response Relationship, Drug MH - Europe MH - Female MH - Humans MH - Male MH - Maximum Tolerated Dose MH - Mechanistic Target of Rapamycin Complex 1/*antagonists & inhibitors/metabolism MH - Mechanistic Target of Rapamycin Complex 2/*antagonists & inhibitors/metabolism MH - Middle Aged MH - Molecular Targeted Therapy MH - Neoplasms/*drug therapy/enzymology/pathology MH - Phosphatidylinositol 3-Kinase/metabolism MH - *Phosphoinositide-3 Kinase Inhibitors MH - Protein Kinase Inhibitors/*administration & dosage/adverse effects/*pharmacokinetics MH - Signal Transduction/drug effects MH - Treatment Outcome MH - Young Adult OTO - NOTNLM OT - PI3K OT - PQR309 OT - Phase 1 OT - Solid tumours OT - mTOR EDAT- 2018/04/17 06:00 MHDA- 2019/01/29 06:00 CRDT- 2018/04/17 06:00 PHST- 2017/12/08 00:00 [received] PHST- 2018/03/09 00:00 [revised] PHST- 2018/03/13 00:00 [accepted] PHST- 2018/04/17 06:00 [pubmed] PHST- 2019/01/29 06:00 [medline] PHST- 2018/04/17 06:00 [entrez] AID - S0959-8049(18)30730-5 [pii] AID - 10.1016/j.ejca.2018.03.012 [doi] PST - ppublish SO - Eur J Cancer. 2018 Jun;96:6-16. doi: 10.1016/j.ejca.2018.03.012. Epub 2018 Apr 13.