PMID- 33629812 OWN - NLM STAT- MEDLINE DCOM- 20211119 LR - 20240402 IS - 1613-4133 (Electronic) IS - 1613-4125 (Print) IS - 1613-4125 (Linking) VI - 65 IP - 8 DP - 2021 Apr TI - Xanthohumol Microbiome and Signature in Healthy Adults (the XMaS Trial): Safety and Tolerability Results of a Phase I Triple-Masked, Placebo-Controlled Clinical Trial. PG - e2001170 LID - 10.1002/mnfr.202001170 [doi] AB - SCOPE: Xanthohumol, a prenylflavonoid from hops, has been extensively studied preclinically but has undergone limited research in human subjects. A triple-masked, placebo-controlled phase I clinical trial was conducted to examine the safety and tolerability of xanthohumol. METHODS AND RESULTS: Thirty healthy volunteers were randomized to 24 mg day(-1) xanthohumol (99.8% pure) or placebo for eight weeks. Comprehensive metabolic panels, complete blood counts, body weight, vital signs, and health-related quality of life questionnaires were assessed every two weeks. Participants were interviewed for adverse events (AEs) throughout the trial. Thirteen of 14 (93%) and 14 of 16 (88%) participants completed the trial in the placebo and xanthohumol groups, respectively. There were no withdrawals due to AEs. There were no clinically relevant, between-group differences in laboratory biomarkers, body weight, vital signs, or health-related quality of life. There were no severe or FDA-defined serious AEs, but non-serious AEs are documented in both the placebo (n = 42) and xanthohumol (n = 58) groups. CONCLUSION: Over an eight-week period, 24 mg daily xanthohumol was safe and well-tolerated by healthy adults. CI - (c) 2021 Wiley-VCH GmbH. FAU - Langley, Blake O AU - Langley BO AUID- ORCID: 0000-0002-8942-1981 AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. FAU - Ryan, Jennifer Joan AU - Ryan JJ AUID- ORCID: 0000-0001-6324-9186 AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. FAU - Hanes, Douglas AU - Hanes D AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. FAU - Phipps, John AU - Phipps J AUID- ORCID: 0000-0001-6831-0564 AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. FAU - Stack, Emily AU - Stack E AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. FAU - Metz, Thomas O AU - Metz TO AUID- ORCID: 0000-0001-6049-3968 AD - Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, USA. FAU - Stevens, J Frederik AU - Stevens JF AUID- ORCID: 0000-0002-6348-9347 AD - College of Pharmacy and the Linus Pauling Institute, Oregon State University, Corvallis, Oregon, USA. FAU - Bradley, Ryan AU - Bradley R AUID- ORCID: 0000-0002-8073-3671 AD - Helfgott Research Institute, National University of Natural Medicine, Portland, Oregon, USA. AD - Herbert Wertheim School of Public Health and Human Longevity Science, San Diego, University of California, La Jolla, California, USA. LA - eng GR - K24 AT011568/AT/NCCIH NIH HHS/United States GR - R01 AT010271/AT/NCCIH NIH HHS/United States GR - R90 AT008924/AT/NCCIH NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20210311 PL - Germany TA - Mol Nutr Food Res JT - Molecular nutrition & food research JID - 101231818 RN - 0 (Biomarkers) RN - 0 (Flavonoids) RN - 0 (Placebos) RN - 0 (Propiophenones) RN - T4467YT1NT (xanthohumol) SB - IM MH - Adult MH - Biomarkers/blood MH - Body Weight/drug effects MH - Female MH - Flavonoids/*adverse effects/*pharmacology MH - Healthy Volunteers MH - Humans MH - Male MH - Placebos MH - Propiophenones/*adverse effects/*pharmacology MH - Quality of Life PMC - PMC8221389 MID - NIHMS1707595 OTO - NOTNLM OT - clinical trial OT - phase I OT - safety OT - tolerability OT - xanthohumol COIS- Potential Conflicts of Interest: No conflicts of interest to report. EDAT- 2021/02/26 06:00 MHDA- 2021/11/20 06:00 PMCR- 2022/04/01 CRDT- 2021/02/25 08:40 PHST- 2021/01/21 00:00 [revised] PHST- 2020/12/09 00:00 [received] PHST- 2021/02/26 06:00 [pubmed] PHST- 2021/11/20 06:00 [medline] PHST- 2021/02/25 08:40 [entrez] PHST- 2022/04/01 00:00 [pmc-release] AID - 10.1002/mnfr.202001170 [doi] PST - ppublish SO - Mol Nutr Food Res. 2021 Apr;65(8):e2001170. doi: 10.1002/mnfr.202001170. Epub 2021 Mar 11.