PMID- 27917453 OWN - NLM STAT- MEDLINE DCOM- 20171214 LR - 20220414 IS - 1573-0646 (Electronic) IS - 0167-6997 (Print) IS - 0167-6997 (Linking) VI - 35 IP - 2 DP - 2017 Apr TI - Phase I study of MRX34, a liposomal miR-34a mimic, administered twice weekly in patients with advanced solid tumors. PG - 180-188 LID - 10.1007/s10637-016-0407-y [doi] AB - Purpose Naturally occurring tumor suppressor microRNA-34a (miR-34a) downregulates the expression of >30 oncogenes across multiple oncogenic pathways, as well as genes involved in tumor immune evasion, but is lost or under-expressed in many malignancies. This first-in-human, phase I study assessed the maximum tolerated dose (MTD), safety, pharmacokinetics, and clinical activity of MRX34, a liposomal miR-34a mimic, in patients with advanced solid tumors. Patients and Methods Adult patients with solid tumors refractory to standard treatment were enrolled in a standard 3 + 3 dose escalation trial. MRX34 was given intravenously twice weekly (BIW) for three weeks in 4-week cycles. Results Forty-seven patients with various solid tumors, including hepatocellular carcinoma (HCC; n = 14), were enrolled. Median age was 60 years, median prior therapies was 4 (range, 1-12), and most were Caucasian (68%) and male (57%). Most common adverse events (AEs) included fever (all grade %/G3%: 64/2), fatigue (57/13), back pain (57/11), nausea (49/2), diarrhea (40/11), anorexia (36/4), and vomiting (34/4). Laboratory abnormalities included lymphopenia (G3%/G4%: 23/9), neutropenia (13/11), thrombocytopenia (17/0), increased AST (19/4), hyperglycemia (13/2), and hyponatremia (19/2). Dexamethasone premedication was required to manage infusion-related AEs. The MTD for non-HCC patients was 110 mg/m(2), with two patients experiencing dose-limiting toxicities of G3 hypoxia and enteritis at 124 mg/m(2). The half-life was >24 h, and C(max) and AUC increased with increasing dose. One patient with HCC achieved a prolonged confirmed PR lasting 48 weeks, and four patients experienced SD lasting >/=4 cycles. Conclusion MRX34 treatment with dexamethasone premedication was associated with acceptable safety and showed evidence of antitumor activity in a subset of patients with refractory advanced solid tumors. The MTD for the BIW schedule was 110 mg/m(2) for non-HCC and 93 mg/m2 for HCC patients. Additional dose schedules of MRX34 have been explored to improve tolerability. FAU - Beg, Muhammad S AU - Beg MS AD - Division of Hematology/Oncology, University of Texas (UT) Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-8852, USA. Muhammad.Beg@UTSouthwestern.edu. FAU - Brenner, Andrew J AU - Brenner AJ AD - UT Health Science Center, San Antonio, TX, USA. FAU - Sachdev, Jasgit AU - Sachdev J AD - Scottsdale Healthcare Research Institute, Scottsdale, AZ, USA. FAU - Borad, Mitesh AU - Borad M AD - Mayo Clinic Cancer Center, Scottsdale, AZ, USA. FAU - Kang, Yoon-Koo AU - Kang YK AD - Asan Medical Center, Seoul, South Korea. FAU - Stoudemire, Jay AU - Stoudemire J AD - Mirna Therapeutics, Inc, Austin, TX, USA. FAU - Smith, Susan AU - Smith S AD - Mirna Therapeutics, Inc, Austin, TX, USA. FAU - Bader, Andreas G AU - Bader AG AD - Mirna Therapeutics, Inc, Austin, TX, USA. FAU - Kim, Sinil AU - Kim S AD - Mirna Therapeutics, Inc, Austin, TX, USA. FAU - Hong, David S AU - Hong DS AD - UT MD Anderson Cancer Center, Houston, TX, USA. LA - eng GR - P30 CA016672/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study DEP - 20161205 PL - United States TA - Invest New Drugs JT - Investigational new drugs JID - 8309330 RN - 0 (Antineoplastic Agents) RN - 0 (Liposomes) RN - 0 (MIRN34 microRNA, human) RN - 0 (MicroRNAs) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/*administration & dosage/adverse effects/pharmacokinetics/therapeutic use MH - Drug Administration Schedule MH - Female MH - Humans MH - Liposomes MH - Male MH - Maximum Tolerated Dose MH - MicroRNAs/*administration & dosage/adverse effects/pharmacokinetics/therapeutic use MH - Middle Aged MH - Nanoparticles/administration & dosage/adverse effects MH - Neoplasms/*drug therapy/metabolism MH - Treatment Outcome PMC - PMC5893501 MID - NIHMS955503 OTO - NOTNLM OT - Advanced solid tumors OT - Experimental therapeutics OT - Phase I trial OT - miR-34a OT - microRNA EDAT- 2016/12/06 06:00 MHDA- 2017/12/15 06:00 PMCR- 2018/04/11 CRDT- 2016/12/06 06:00 PHST- 2016/10/17 00:00 [received] PHST- 2016/11/09 00:00 [accepted] PHST- 2016/12/06 06:00 [pubmed] PHST- 2017/12/15 06:00 [medline] PHST- 2016/12/06 06:00 [entrez] PHST- 2018/04/11 00:00 [pmc-release] AID - 10.1007/s10637-016-0407-y [pii] AID - 10.1007/s10637-016-0407-y [doi] PST - ppublish SO - Invest New Drugs. 2017 Apr;35(2):180-188. doi: 10.1007/s10637-016-0407-y. Epub 2016 Dec 5.