PMID- 36940261 OWN - NLM STAT- MEDLINE DCOM- 20230608 LR - 20240312 IS - 1549-490X (Electronic) IS - 1083-7159 (Print) IS - 1083-7159 (Linking) VI - 28 IP - 6 DP - 2023 Jun 2 TI - Atezolizumab Plus PEGPH20 Versus Chemotherapy in Advanced Pancreatic Ductal Adenocarcinoma and Gastric Cancer: MORPHEUS Phase Ib/II Umbrella Randomized Study Platform. PG - 553-e472 LID - 10.1093/oncolo/oyad022 [doi] AB - BACKGROUND: The MORPHEUS platform comprises multiple open-label, randomized, phase Ib/II trials designed to identify early efficacy and safety signals of treatment combinations across cancers. Atezolizumab (anti-programmed cell death 1 ligand 1 [PD-L1]) was evaluated in combination with PEGylated recombinant human hyaluronidase (PEGPH20). METHODS: In 2 randomized MORPHEUS trials, eligible patients with advanced, previously treated pancreatic ductal adenocarcinoma (PDAC) or gastric cancer (GC) received atezolizumab plus PEGPH20, or control treatment (mFOLFOX6 or gemcitabine plus nab-paclitaxel [MORPHEUS-PDAC]; ramucirumab plus paclitaxel [MORPHEUS-GC]). Primary endpoints were objective response rates (ORR) per RECIST 1.1 and safety. RESULTS: In MORPHEUS-PDAC, ORRs with atezolizumab plus PEGPH20 (n = 66) were 6.1% (95% CI, 1.68%-14.80%) vs. 2.4% (95% CI, 0.06%-12.57%) with chemotherapy (n = 42). In the respective arms, 65.2% and 61.9% had grade 3/4 adverse events (AEs); 4.5% and 2.4% had grade 5 AEs. In MORPHEUS-GC, confirmed ORRs with atezolizumab plus PEGPH20 (n = 13) were 0% (95% CI, 0%-24.7%) vs. 16.7% (95% CI, 2.1%-48.4%) with control (n = 12). Grade 3/4 AEs occurred in 30.8% and 75.0% of patients, respectively; no grade 5 AEs occurred. CONCLUSION: Atezolizumab plus PEGPH20 showed limited clinical activity in patients with PDAC and none in patients with GC. The safety of atezolizumab plus PEGPH20 was consistent with each agent's known safety profile. (ClinicalTrials.gov Identifier: NCT03193190 and NCT03281369). CI - (c) The Author(s) 2023. Published by Oxford University Press. FAU - Ko, Andrew H AU - Ko AH AD - Division of Hematology/Oncology, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, USA. FAU - Kim, Kyu-Pyo AU - Kim KP AD - Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. FAU - Siveke, Jens T AU - Siveke JT AD - Department of Medical Oncology and Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK/DKFZ, partner site Essen), West German Cancer Center, University Hospital Essen, Essen, Germany. FAU - Lopez, Charles D AU - Lopez CD AD - Division of Hematology Oncology, Oregon Health & Science University, Knight Cancer Institute, Portland, OR, USA. FAU - Lacy, Jill AU - Lacy J AD - Department of Medicine, Section of Medical Oncology, Yale School of Medicine, Yale University, New Haven, CT, USA. FAU - O'Reilly, Eileen M AU - O'Reilly EM AD - Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Macarulla, Teresa AU - Macarulla T AD - Gastrointestinal Cancer Unit, Vall d'Hebron University Hospital and Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain. FAU - Manji, Gulam A AU - Manji GA AD - Division of Hematology and Oncology, Columbia University Irving Medical Center, New York, NY, USA. FAU - Lee, Jeeyun AU - Lee J AD - Division of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. FAU - Ajani, Jaffer AU - Ajani J AD - Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. FAU - Alsina Maqueda, Maria AU - Alsina Maqueda M AD - Gastrointestinal Cancer Unit, Vall d'Hebron University Hospital and Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain. FAU - Rha, Sun-Young AU - Rha SY AD - Department of Internal Medicine, Yonsei Cancer Center, Yonsei University Health System, Seoul, Republic of Korea. FAU - Lau, Janet AU - Lau J AD - Genentech, Inc., South San Francisco, CA, USA. FAU - Al-Sakaff, Nedal AU - Al-Sakaff N AD - F. Hoffmann-La Roche, Ltd, Basel, Switzerland. FAU - Allen, Simon AU - Allen S AD - Genentech, Inc., South San Francisco, CA, USA. FAU - Lu, Danny AU - Lu D AD - Hoffmann-La Roche Limited, Mississauga, ON, Canada. FAU - Shemesh, Colby S AU - Shemesh CS AD - Genentech, Inc., South San Francisco, CA, USA. FAU - Gan, Xinxin AU - Gan X AD - Product Development Safety, Roche (China) Holding Ltd, Shanghai, People's Republic of China. FAU - Cha, Edward AU - Cha E AD - Genentech, Inc., South San Francisco, CA, USA. FAU - Oh, Do-Youn AU - Oh DY AD - Department of Internal Medicine, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. AD - Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea. AD - Integrated Major in Innovative Medical Science, Seoul National University Graduate School, Seoul, Republic of Korea. LA - eng SI - ClinicalTrials.gov/NCT03281369 SI - ClinicalTrials.gov/NCT03193190 GR - P30 CA008748/CA/NCI NIH HHS/United States GR - UL1 TR001863/TR/NCATS NIH HHS/United States PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Oncologist JT - The oncologist JID - 9607837 RN - 52CMI0WC3Y (atezolizumab) RN - EC 3.2.1.35 (Hyaluronoglucosaminidase) RN - P88XT4IS4D (Paclitaxel) RN - EC 3.2.1.35 (PEGPH20) SB - IM MH - Humans MH - *Adenocarcinoma/drug therapy MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects MH - *Carcinoma, Pancreatic Ductal/drug therapy MH - Hyaluronoglucosaminidase/adverse effects MH - Paclitaxel/adverse effects MH - *Pancreatic Neoplasms/drug therapy/pathology MH - *Stomach Neoplasms/drug therapy PMC - PMC10243783 OTO - NOTNLM OT - PD-L1 OT - basket study OT - combination therapy OT - gastric cancer OT - hyaluronan OT - immunotherapy OT - pancreatic cancer OT - proof of concept COIS- All authors received support from F. Hoffmann-La Roche/Genentech during the conduct of this study. Andrew H. Ko: Roche/Genentech (consulting/advisory relationship and research funding). Jens T. Siveke: AstraZeneca, Bayer, Immunocore, Roche/Genentech, Servier (honoraria), Bristol Myers Squibb, Celgene, Roche/Genentech, Pharma15 (Board of Directors, consulting/advisory relationship), Bristol Myers Squibb, Celgene, Roche/Genentech (research funding), and Pharma15 (intellectual property rights/inventor/patent holder). Charles D. Lopez: Servier Pharmaceuticals, Taiho Pharmaceuticals, Genentech/Roche (research funding). Jill Lacy: Ipsen, Novartis, Deciphera, Merck, Equinox, Techspert, Guidepoint, KeyQuest, FirstWorld Group, Aptitude Health, Brass Tacks Health (consulting/advisory relationship). Eileen M. O'Reilly: CytomX Therapeutics and Rafael Therapeutics (DSMB), Seagen, Boehringer Ingelheim, BioNTech, Ipsen, Merck, IDEAYA, Silenseed, Novartis, AstraZeneca, Noxxon, BioSapien, Cend Therapeutics, Thetis, Autem, ZielBio, Tempus (consulting/advisory relationship), Agios, Genentech-Roche, Eisai, Zymeworks (spouse: consulting/advisory relationship), Genentech/Roche, Celgene/BMS, BioNTech, AstraZeneca, Arcus, Elicio, Parker Institute (research funding). Teresa Macarulla: Ability Pharmaceuticals SL, Amgen, Aptitude Health, AstraZeneca, Basilea Pharma, Baxter, BioLineRX Ltd., Celgene, Eisai, Ellipses, Genzyme, Hirslanden/GITZ, Imedex, Incyte, Ipsen Bioscience, Inc., Janssen, Lilly, Marketing Farmaceutico & Investigacion Clinica, S.L., MDS, Medscape, Novocure, Paraxel, PPD Development, Polaris, QED Therapeutics, Roche Farma, Sanofi-Aventis, Servier, Scilink Comunicacion Cientifica SC, Surface Oncology, Zymeworks (consulting/advisory relationship), Abbvie Farmaceutica, Ability Pharmaceuticals, Agios Pharmaceuticals, AMC Medical Research, Amgen, Armo Biosciences, Aslan Pharmaceuticals, AstraZeneca, Basilea Pharmaceutica International, Bayer, BeiGene, BioKeralty Research Institute, BioLineRx, Blueprint Medicines, Boston Biomedical, Bristol Myers Squibb (BMS), Cantargia, Celgene, Eisai, Erytech Pharma, European Organisation for Research and Treatment of Cancer (EORTC), F. Hoffmann-La Roche, FibroGen, Halozyme, Incyte, Ipsen Bioscience, Ipsen Pharma, Lilly, Loxo Oncology, Medimmune, Merck Sharp & Dohme, Nelum, Novartis, Novocure, OncoMed Pharmaceuticals, QED Therapeutics, VCN Biosciences, Zymeworks (research funding), Servier, prIME, AstraZeneca, Sanofi, and Incyte (H). Gulam A. Manji: Roche/Genentech, CEND Pharmaceutical (consulting/advisory relationship), Roche/Genentech, Regeneron, BiolonRX, Merck (research funding), Amgen, Lilly, Roche (honoraria), CEND Pharmaceuticals (intellectual property rights/inventor/patent holder). Jeeyun Lee: OncXerna, Mirati, Guardant (consulting/advisory relationship), AstraZeneca, Merck MSD (research funding). Jaffer Ajani: BMS, Merck, Astellas, Amgen, Novartis, Zymeworks (honoraria), BMS, Roche, Merck, Prolinx, DF, Zymeworks, Astellas, Taiho, Leap, Gilead, LaNova (research funding). Maria Alsina Maqueda: Amgen, BMS, Lilly, MSD, Roche, Servier (honoraria), BMS, Lilly, MSD, Servier (consulting/advisory relationship). Sun-Young Rha: MSD, BMS/Ono, Daiichi Sankyo, Amgen, Indivumed, LG Biochemical (consulting/advisory relationship), Lilly, Merck, BMS, MSD (expert testimony), Amgen, BMS/Ono, Daiichi Sankyo, AstraZeneca, Roche, Merck, Lilly, MSD, BeiGene, Zymeworks (research funding). Janet Lau, Simon Allen, Danny Lu, Colby S. Shemesh, Xinxin Gan, Edward Cha, and Nedal Al-Sakaff: F. Hoffmann-La Roche Ltd./Genentech Inc. (employment and intellectual property rights/inventor/patent holder). Do-Youn Oh: AstraZeneca, Novartis, Genentech/Roche, Merck Serono, Bayer, Taiho, ASLAN, Halozyme, Zymeworks, BMS/Celgene, BeiGene, Basilea, Turning Point, Yuhan, Arcus Biosciences, IQVIA (consulting/advisory relationship), AstraZeneca, Novartis, Array, Eli Lilly, Servier, BeiGene, MSD, Handok (research funding). EDAT- 2023/03/21 06:00 MHDA- 2023/06/08 06:42 PMCR- 2023/03/20 CRDT- 2023/03/20 14:12 PHST- 2022/11/30 00:00 [received] PHST- 2023/01/18 00:00 [accepted] PHST- 2023/06/08 06:42 [medline] PHST- 2023/03/21 06:00 [pubmed] PHST- 2023/03/20 14:12 [entrez] PHST- 2023/03/20 00:00 [pmc-release] AID - 7081215 [pii] AID - oyad022 [pii] AID - 10.1093/oncolo/oyad022 [doi] PST - ppublish SO - Oncologist. 2023 Jun 2;28(6):553-e472. doi: 10.1093/oncolo/oyad022.