PMID- 27432838 OWN - NLM STAT- MEDLINE DCOM- 20171222 LR - 20240323 IS - 1537-6591 (Electronic) IS - 1058-4838 (Print) IS - 1058-4838 (Linking) VI - 63 IP - 8 DP - 2016 Oct 15 TI - Safety Profile of Nifurtimox for Treatment of Chagas Disease in the United States. PG - 1056-1062 LID - 10.1093/cid/ciw477 [doi] AB - BACKGROUND: Nifurtimox is 1 of only 2 medications available for treating Chagas disease (CD) and currently the only drug available in the United States, but its safety and tolerance have not been extensively studied. This is the first study to evaluate tolerance of nifurtimox in US patients with CD. METHODS: This investigation assessed side effects in a sample of 53 patients with CD, all Latin American immigrants, who underwent treatment with nifurtimox (8-10 mg/kg in 3 daily doses for 12 weeks) from March 2008 to July 2012. The frequency and severity of adverse events (AEs) was recorded. RESULTS: A total of 435 AEs were recorded; 93.8% were mild, 3.0% moderate, and 3.2% severe. Patients experienced a mean of 8.2 AEs; the most frequent were anorexia (79.2%), nausea (75.5%), headache (60.4%), amnesia (58.5%), and >5% weight loss (52.8%). Eleven patients (20.8%) were unable to complete treatment. Experiencing a moderate or severe AE (odds ratio [OR], 3.82; P < .05) and Mexican nationality (OR, 2.29; P < .05) were significant predictors of treatment discontinuation, but sex and cardiac progression at baseline were not. Patients who did not complete treatment experienced nearly 3 times more AEs per 30-day period (P = .05). CONCLUSIONS: Nifurtimox produces frequent side effects, but the majority are mild and can be managed with dose reduction and/or temporary suspension of medication. The high frequency of gastrointestinal symptoms and weight loss mirrors results from prior investigations. Special attention should be paid during the early stages of treatment to potentially severe symptoms including depression, rash, and anxiety. CI - (c) The Author 2016. Published by Oxford University Press for the Infectious Diseases Society of America. FAU - Forsyth, Colin J AU - Forsyth CJ AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Hernandez, Salvador AU - Hernandez S AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Olmedo, Wilman AU - Olmedo W AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Abuhamidah, Adieb AU - Abuhamidah A AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Traina, Mahmoud I AU - Traina MI AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Sanchez, Daniel R AU - Sanchez DR AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Soverow, Jonathan AU - Soverow J AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. FAU - Meymandi, Sheba K AU - Meymandi SK AD - Center of Excellence for Chagas Disease, Olive View-University of California, Los Angeles Medical Center, Sylmar. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160717 PL - United States TA - Clin Infect Dis JT - Clinical infectious diseases : an official publication of the Infectious Diseases Society of America JID - 9203213 RN - 0 (Trypanocidal Agents) RN - M84I3K7C2O (Nifurtimox) SB - IM MH - Adult MH - Aged MH - Chagas Disease/*drug therapy/epidemiology/parasitology MH - Drug-Related Side Effects and Adverse Reactions/diagnosis/*epidemiology/*etiology MH - Female MH - Humans MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Nifurtimox/*adverse effects/therapeutic use MH - Phenotype MH - Risk Factors MH - Severity of Illness Index MH - Symptom Assessment MH - Treatment Outcome MH - Trypanocidal Agents/*adverse effects/therapeutic use MH - Trypanosoma cruzi MH - United States/epidemiology PMC - PMC5036918 OTO - NOTNLM OT - Chagas disease OT - Trypanosoma cruzi OT - benznidazole OT - nifurtimox OT - side effects EDAT- 2016/07/20 06:00 MHDA- 2017/12/23 06:00 PMCR- 2016/07/17 CRDT- 2016/07/20 06:00 PHST- 2016/06/03 00:00 [received] PHST- 2016/07/06 00:00 [accepted] PHST- 2016/07/20 06:00 [entrez] PHST- 2016/07/20 06:00 [pubmed] PHST- 2017/12/23 06:00 [medline] PHST- 2016/07/17 00:00 [pmc-release] AID - ciw477 [pii] AID - 10.1093/cid/ciw477 [doi] PST - ppublish SO - Clin Infect Dis. 2016 Oct 15;63(8):1056-1062. doi: 10.1093/cid/ciw477. Epub 2016 Jul 17.