Vietnamese Born in July, 1976 Gender: Male Editorial Board Vietnam Journal of Biotechnology (https://vjs.ac.vn/index.php/vjbt) Bangladesh Journal of Pharmacology (http://bdpsjournal.org/index.php/bjp) Vice Chairman Vietnam Association of Regenerative Medicine and Cell Therapy (VARC) (2023-2028) Member Japanese Society for Immunology (JSI) (2009-2013) International Society for Stem Cell Application (ISSCA) (2019-2020) Vietnam Biological Association (VBA) (2024-2029) Monograph Aryl hydrocarbon receptor (Ahr) a transcriptional factor in autoimmune, neurological and cancer diseases and some applications of Ahr in biomedical research ISBN 978-604-357-333-6, 2024 WIPO patent (WO 2007/054348 A1) NOVEL MEDICAMENTS The present invention relates to the use of a modulator of tryptophan metabolism for the manufacture of a medicament for the therapy and/or prophylaxis of immunotolerance and/or multiorgan failure, depression, post-traumatic stress syndrome (PTSD), burn-out syndrome and chronic fatigue syndrome (CFS).