An Evaluation of Psilocybin's Effect on Cardiac Repolarization and the Effect of Food on Psilocybin's Pharmacokinetics

Summary

This study is comprised of two parts. The purpose of the first part of this study is to evaluate the effects of a supratherapeutic dose of psilocybin on cardiac repolarization. The purpose of the second part of the study is to evaluate the effects of food on the pharmacokinetics of psilocybin.

Timeline

Start

2022-06-22

Primary completion

2023-08-09

Completion

2023-08-09

Publications

• Background Carhart-Harris RL, Leech R, Hellyer PJ, Shanahan M, Feilding A, Tagliazucchi E, Chialvo DR, Nutt D. The entropic brain: a theory of conscious states informed by neuroimaging research with psychedelic drugs. Front Hum Neurosci. 2014 Feb 3;8:20. doi: 10.3389/fnhum.2014.00020. eCollection 2014.
• Background Nichols DE. Hallucinogens. Pharmacol Ther. 2004 Feb;101(2):131-81. doi: 10.1016/j.pharmthera.2003.11.002.
• Background Passie T, Seifert J, Schneider U, Emrich HM. The pharmacology of psilocybin. Addict Biol. 2002 Oct;7(4):357-64. doi: 10.1080/1355621021000005937.
• Background Carhart-Harris RL, Nutt DJ. Experienced drug users assess the relative harms and benefits of drugs: a web-based survey. J Psychoactive Drugs. 2013 Sep-Oct;45(4):322-8. doi: 10.1080/02791072.2013.825034.
• Background Nutt DJ, King LA, Phillips LD; Independent Scientific Committee on Drugs. Drug harms in the UK: a multicriteria decision analysis. Lancet. 2010 Nov 6;376(9752):1558-65. doi: 10.1016/S0140-6736(10)61462-6. Epub 2010 Oct 29.
• Background Hasler F, Bourquin D, Brenneisen R, Bar T, Vollenweider FX. Determination of psilocin and 4-hydroxyindole-3-acetic acid in plasma by HPLC-ECD and pharmacokinetic profiles of oral and intravenous psilocybin in man. Pharm Acta Helv. 1997 Jun;72(3):175-84. doi: 10.1016/s0031-6865(97)00014-9.
• Background Brown RT, Nicholas CR, Cozzi NV, Gassman MC, Cooper KM, Muller D, Thomas CD, Hetzel SJ, Henriquez KM, Ribaudo AS, Hutson PR. Pharmacokinetics of Escalating Doses of Oral Psilocybin in Healthy Adults. Clin Pharmacokinet. 2017 Dec;56(12):1543-1554. doi: 10.1007/s40262-017-0540-6.
• Background Madsen MK, Fisher PM, Burmester D, Dyssegaard A, Stenbaek DS, Kristiansen S, Johansen SS, Lehel S, Linnet K, Svarer C, Erritzoe D, Ozenne B, Knudsen GM. Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels. Neuropsychopharmacology. 2019 Jun;44(7):1328-1334. doi: 10.1038/s41386-019-0324-9. Epub 2019 Jan 26.
• Background Manevski N, Kurkela M, Hoglund C, Mauriala T, Court MH, Yli-Kauhaluoma J, Finel M. Glucuronidation of psilocin and 4-hydroxyindole by the human UDP-glucuronosyltransferases. Drug Metab Dispos. 2010 Mar;38(3):386-95. doi: 10.1124/dmd.109.031138. Epub 2009 Dec 10.
• Background Hasler F, Bourquin D, Brenneisen R, Vollenweider FX. Renal excretion profiles of psilocin following oral administration of psilocybin: a controlled study in man. J Pharm Biomed Anal. 2002 Sep 5;30(2):331-9. doi: 10.1016/s0731-7085(02)00278-9.
• Background Darpo B, Benson C, Dota C, Ferber G, Garnett C, Green CL, Jarugula V, Johannesen L, Keirns J, Krudys K, Liu J, Ortemann-Renon C, Riley S, Sarapa N, Smith B, Stoltz RR, Zhou M, Stockbridge N. Results from the IQ-CSRC prospective study support replacement of the thorough QT study by QT assessment in the early clinical phase. Clin Pharmacol Ther. 2015 Apr;97(4):326-35. doi: 10.1002/cpt.60.
• Background Ferber G, Zhou M, Darpo B. Detection of QTc effects in small studies--implications for replacing the thorough QT study. Ann Noninvasive Electrocardiol. 2015 Jul;20(4):368-77. doi: 10.1111/anec.12227. Epub 2014 Nov 4.
• Background Huang DP, Chen J, Dang Q, Tsong Y. Assay sensitivity in "Hybrid thorough QT/QTc (TQT)" study. J Biopharm Stat. 2019;29(2):378-384. doi: 10.1080/10543406.2018.1535498. Epub 2018 Oct 22.
• Background Dahmane E, Hutson PR, Gobburu JVS. Exposure-Response Analysis to Assess the Concentration-QTc Relationship of Psilocybin/Psilocin. Clin Pharmacol Drug Dev. 2021 Jan;10(1):78-85. doi: 10.1002/cpdd.796. Epub 2020 Apr 6.
• Background Garnett C, Bonate PL, Dang Q, Ferber G, Huang D, Liu J, Mehrotra D, Riley S, Sager P, Tornoe C, Wang Y. Scientific white paper on concentration-QTc modeling. J Pharmacokinet Pharmacodyn. 2018 Jun;45(3):383-397. doi: 10.1007/s10928-017-9558-5. Epub 2017 Dec 5.
• Background Sischka PE, Costa AP, Steffgen G, Schmidt AF. The WHO-5 well-being index - validation based on item response theory and the analysis of measurement invariance across 35 countries. Journal of Affective Disorders Reports. 2020;1(100020).

Drugs

Indications

No indication recorded.