PMID- 30361524 OWN - NLM STAT- MEDLINE DCOM- 20190823 LR - 20220204 IS - 1532-1827 (Electronic) IS - 0007-0920 (Print) IS - 0007-0920 (Linking) VI - 119 IP - 9 DP - 2018 Oct TI - Safety and pharmacokinetics of MM-302, a HER2-targeted antibody-liposomal doxorubicin conjugate, in patients with advanced HER2-positive breast cancer: a phase 1 dose-escalation study. PG - 1086-1093 LID - 10.1038/s41416-018-0235-2 [doi] AB - BACKGROUND: This phase 1 dose-escalation trial studied MM-302, a novel HER2-targeted PEGylated antibody-liposomal doxorubicin conjugate, in HER2-positive locally advanced/metastatic breast cancer. METHODS: Patients were enrolled in four cohorts: MM-302 monotherapy (8, 16, 30, 40, and 50 mg/m(2) every 4 weeks [q4w]); MM-302 (30 or 40 mg/m(2) q4w) plus trastuzumab (4 mg/kg q2w); MM-302 (30 mg/m(2)) plus trastuzumab (6 mg/kg) q3w; MM-302 (30 mg/m(2)) plus trastuzumab (6 mg/kg) and cyclophosphamide (450 mg/m(2)) q3w. RESULTS: Sixty-nine patients were treated. The most common adverse events (AEs) were fatigue and nausea. Grade 3/4 AEs of special interest included neutropenia, fatigue, mucosal inflammation, anemia, thrombocytopenia, febrile neutropenia, and palmar-plantar erythrodysesthesia. The MTD was not reached. With MM-302 >/= 30 mg/m(2), overall response rate (ORR) was 13% and median progression-free survival (mPFS) 7.4 months (95% CI: 3.5-10.9) in all arms. In 25 anthracycline-naive patients, ORR was 28.0% and mPFS 10.9 months (95% CI: 1.8-15.3). Imaging with (64)Cu-labeled MM-302 visualized tumor-drug penetrance in tumors throughout the body, including the brain. CONCLUSION: MM-302 monotherapy, in combination with trastuzumab, or trastuzumab plus cyclophosphamide, was well tolerated and showed promising efficacy. The selected phase 2 MM-302 dose was 30 mg/m(2) plus 6 mg/kg trastuzumab q3w. FAU - Munster, Pamela AU - Munster P AD - Helen Diller Family Comprehensive Cancer Center, Department of Medicine, University of California, San Francisco, CA, USA. Pmunster@medicine.ucsf.edu. FAU - Krop, Ian E AU - Krop IE AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA. FAU - LoRusso, Patricia AU - LoRusso P AD - Yale Cancer Center, New Haven, CT, USA. FAU - Ma, Cynthia AU - Ma C AD - Department of Medicine and the Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA. FAU - Siegel, Barry A AU - Siegel BA AD - Mallinckrodt Institute of Radiology and the Alvin J. Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA. FAU - Shields, Anthony F AU - Shields AF AD - Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, USA. FAU - Molnar, Istvan AU - Molnar I AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Wickham, Thomas J AU - Wickham TJ AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Reynolds, Joseph AU - Reynolds J AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Campbell, Karen AU - Campbell K AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Hendriks, Bart S AU - Hendriks BS AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Adiwijaya, Bambang S AU - Adiwijaya BS AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Geretti, Elena AU - Geretti E AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Moyo, Victor AU - Moyo V AD - Research and Development, Merrimack Pharmaceuticals, Inc, Cambridge, MA, USA. FAU - Miller, Kathy D AU - Miller KD AD - Indiana University Melvin and Bren Simon Cancer Center, Indianapolis, IN, USA. LA - eng GR - P30 CA091842/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase I PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20181026 PL - England TA - Br J Cancer JT - British journal of cancer JID - 0370635 RN - 0 (Immunoconjugates) RN - 0 (Single-Chain Antibodies) RN - 80168379AG (Doxorubicin) RN - 8N3DW7272P (Cyclophosphamide) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Receptor, ErbB-2) RN - P188ANX8CK (Trastuzumab) RN - S5Z216QNO6 (gancotamab) MH - Adult MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/administration & dosage/adverse effects MH - Brain/diagnostic imaging MH - Breast Neoplasms/diagnostic imaging/*drug therapy/genetics MH - Cyclophosphamide/*administration & dosage/adverse effects MH - Dose-Response Relationship, Drug MH - Doxorubicin/administration & dosage/adverse effects/*analogs & derivatives/pharmacokinetics MH - Drug Administration Schedule MH - Female MH - Humans MH - Immunoconjugates/*administration & dosage/adverse effects/pharmacokinetics MH - Receptor, ErbB-2/*genetics MH - Single-Chain Antibodies/*administration & dosage/adverse effects/pharmacokinetics MH - Survival Analysis MH - Trastuzumab/*administration & dosage/adverse effects MH - Treatment Outcome PMC - PMC6219487 COIS- P.M. has nothing to declare. C.M.'s institution received financial support from Merrimack Pharmaceuticals to conduct this trial. P.L.'s former institution received financial support from Merrimack Pharmaceuticals to conduct this trial. Dr LoRusso has provided consultancy for: Agios, Alexion, Ariad, GenMab, Glenmark, Halozyme, Menarini, Novartis, Roche-Genentech, Genentech, CytomX, Omniox, and Ignyta. B.A.S. has received consulting fees from Merrimack Pharmaceuticals and his institution received financial support from Merrimack Pharmaceuticals to conduct this trial. Dr Siegel also received grants from the National Cancer Institute, and personal fees from Beacon Biosciences during the conduct of the study. AFS received consulting fees from Merrimack Pharmaceuticals and his institution received financial support from Merrimack Pharmaceuticals to conduct this trial. IM was an employee of Merrimack at the time of the study, and is a consultant for Ipsen Biosciences outside of the submitted work. J.R. was an employee of Merrimack at the time of the study. K.C. was an employee of Merrimack at the time of the study. B.S.H. was an employee of Merrimack at the time of the study. B.A. is an employee of Merrimack. E.G. was an employee of Merrimack at the time of the study. V.M. was an employee of Merrimack at the time of the study, is an equity owner in L.E.A.F. Pharmaceuticals LLC outside of the submitted work. In addition, Dr Moyo has a patent null pending. K.D.M. received financial support to her institution from Merrimack Pharmaceuticals to conduct this trial. T.J.W. was an employee of Merrimack at the time of the study. EDAT- 2018/10/27 06:00 MHDA- 2019/08/24 06:00 PMCR- 2019/10/26 CRDT- 2018/10/27 06:00 PHST- 2018/02/08 00:00 [received] PHST- 2018/07/27 00:00 [accepted] PHST- 2018/06/28 00:00 [revised] PHST- 2018/10/27 06:00 [pubmed] PHST- 2019/08/24 06:00 [medline] PHST- 2018/10/27 06:00 [entrez] PHST- 2019/10/26 00:00 [pmc-release] AID - 10.1038/s41416-018-0235-2 [pii] AID - 235 [pii] AID - 10.1038/s41416-018-0235-2 [doi] PST - ppublish SO - Br J Cancer. 2018 Oct;119(9):1086-1093. doi: 10.1038/s41416-018-0235-2. Epub 2018 Oct 26.