PMID- 31129068 OWN - NLM STAT- MEDLINE DCOM- 20210726 LR - 20210726 IS - 1873-5010 (Electronic) IS - 1569-1993 (Linking) VI - 19 IP - 2 DP - 2020 Mar TI - Pilot study to test inhaled nitric oxide in cystic fibrosis patients with refractory Mycobacterium abscessus lung infection. PG - 225-231 LID - S1569-1993(19)30104-3 [pii] LID - 10.1016/j.jcf.2019.05.002 [doi] AB - BACKGROUND: Airways of Cystic Fibrosis (CF) patients are Nitric Oxide (NO) deficient which may contribute to impaired lung function and infection clearance. Mycobacterium abscessus (M. abscessus) infection prevalence is increasing in CF patients and is associated with increased morbidity and mortality. Here, we assess the safety and efficacy of intermittent inhaled NO (iNO) as adjuvant therapy in CF patients with refractory M. abscessus lung infection. METHODS: A prospective, open-label pilot study of iNO (160 ppm) administered five times/day during hospitalization (14 days), and three times/day during ambulatory treatment (7 days) was conducted. The primary outcome was safety measured by NO-related adverse events (AEs). Secondary outcomes were six-minute walk distance (6MWD), forced expiratory volume in 1 s (FEV(1)), and M. abscessus burden in airways. RESULTS: Nine subjects were recruited. INO at 160 ppm was well-tolerated and no iNO-related SAEs were observed during the study. Mean FEV1 and 6WMD were increased relative to baseline during NO treatment. M. abscessus culture conversion was not achieved, but 3/9 patients experienced at least one negative culture during the study. Mean time to positivity in M. abscessus culture, and qPCR analysis showed reductions in sputum bacterial load. The study was not powered to achieve statistical significance in FEV1, 6WMD, and bacterial load. CONCLUSIONS: Intermittent iNO at 160 ppm is well tolerated and safe and led to increases in mean 6MWD and FEV1. INO exhibited potential antibacterial activity against M. abscessus. Further evaluation of secondary endpoints in a larger cohort of CF patients is warranted to demonstrate statistical significance. CI - Copyright (c) 2019 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Bentur, Lea AU - Bentur L AD - Pediatric Pulmonary Institute and CF Center, Ruth Children's Hospital, Rambam Health Care Campus, POB 9602, Haifa, Israel; Technion-Israel Institute of Technology, Haifa, Israel. Electronic address: l_bentur@rambam.health.gov.il. FAU - Gur, Michal AU - Gur M AD - Pediatric Pulmonary Institute and CF Center, Ruth Children's Hospital, Rambam Health Care Campus, POB 9602, Haifa, Israel; Technion-Israel Institute of Technology, Haifa, Israel. FAU - Ashkenazi, Moshe AU - Ashkenazi M AD - Pediatric Pulmonary Institute and National CF Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer 52621, Ramat-Gan, Israel; Pediatric Pulmonary Unit, Soroka University Medical Center POB 151, Beer-Sheva, Israel. FAU - Livnat-Levanon, Galit AU - Livnat-Levanon G AD - Pediatric Pulmonology Unit and CF Center, Lady Davis Carmel Medical Center, Haifa, Israel. FAU - Mizrahi, Marko AU - Mizrahi M AD - AIT Therapeutics Inc, Garden City, NY 11530, USA. FAU - Tal, Asher AU - Tal A AD - AIT Therapeutics Inc, Garden City, NY 11530, USA. FAU - Ghaffari, Abdi AU - Ghaffari A AD - AIT Therapeutics Inc, Garden City, NY 11530, USA. FAU - Geffen, Yuval AU - Geffen Y AD - Microbiology Laboratory, Rambam Health Care Campus, POB 9602, Haifa, Israel. FAU - Aviram, Micha AU - Aviram M AD - Pediatric Pulmonary Unit, Soroka University Medical Center POB 151, Beer-Sheva, Israel. FAU - Efrati, Ori AU - Efrati O AD - Pediatric Pulmonary Institute and National CF Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer 52621, Ramat-Gan, Israel; Sackler Faculty of Medicine, Tel-Aviv University, POB 39040, Tel-Aviv, Israel. LA - eng PT - Clinical Trial PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20190523 PL - Netherlands TA - J Cyst Fibros JT - Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society JID - 101128966 RN - 0 (Anti-Bacterial Agents) RN - 0 (Bronchodilator Agents) RN - 31C4KY9ESH (Nitric Oxide) SB - IM MH - Adult MH - Anti-Bacterial Agents/therapeutic use MH - Bacterial Load/*methods MH - Bronchodilator Agents/administration & dosage MH - Chemotherapy, Adjuvant/methods MH - *Cystic Fibrosis/epidemiology/microbiology/physiopathology/therapy MH - Female MH - Humans MH - Israel/epidemiology MH - Male MH - *Mycobacterium Infections, Nontuberculous/physiopathology/therapy MH - Mycobacterium abscessus/drug effects/isolation & purification MH - Nitric Oxide/*administration & dosage MH - Outcome Assessment, Health Care MH - Respiratory Function Tests/*methods MH - Respiratory Therapy/methods MH - Sputum/microbiology MH - Walk Test/methods OTO - NOTNLM OT - Cystic fibrosis OT - Inhaled nitric oxide OT - Mycobacterium Abscessus EDAT- 2019/05/28 06:00 MHDA- 2021/07/27 06:00 CRDT- 2019/05/27 06:00 PHST- 2018/11/15 00:00 [received] PHST- 2019/04/30 00:00 [revised] PHST- 2019/05/02 00:00 [accepted] PHST- 2019/05/28 06:00 [pubmed] PHST- 2021/07/27 06:00 [medline] PHST- 2019/05/27 06:00 [entrez] AID - S1569-1993(19)30104-3 [pii] AID - 10.1016/j.jcf.2019.05.002 [doi] PST - ppublish SO - J Cyst Fibros. 2020 Mar;19(2):225-231. doi: 10.1016/j.jcf.2019.05.002. Epub 2019 May 23.