PMID- 25560174 OWN - NLM STAT- MEDLINE DCOM- 20150908 LR - 20150224 IS - 1941-9260 (Electronic) IS - 0032-5481 (Linking) VI - 127 IP - 2 DP - 2015 Mar TI - Assessment of confirmed urinary tract infection in patients treated with dalfampridine for multiple sclerosis. PG - 218-22 LID - 10.1080/00325481.2015.1000229 [doi] AB - Urinary tract infections (UTIs) were reported frequently with dalfampridine extended-release (dalfampridine-ER) 10 mg relative to placebo in previous multiple sclerosis (MS) studies. The objective of this study was to determine whether dalfampridine-ER is associated with increased incidence of confirmed UTIs in MS patients. This post hoc analysis used UTI data from a study comparing the 4-week safety and efficacy of 5 mg (n = 144) and 10 mg (n = 142) twice-daily dalfampridine-ER versus placebo (n = 143). To confirm UTIs, three clinical assessments were used: standard urinalysis (leukocytes > 5/high-power field); urine culture (>/= 100,000 and >/= 10,000 colony-forming units [CFUs]/mL) for those who reported UTIs as adverse events (AEs) or had positive urinalysis; and UTI symptomatology. Fisher's exact test assessed statistical significance. The proportion of patients who reported UTIs as AEs in the placebo and dalfampridine-ER 5 mg and 10 mg groups were 5.6%, 6.3%, and 9.9%, respectively. In comparison, those with laboratory-confirmed UTIs were lower: >/= 100,000 CFUs/mL: 4.2%, 2.8%, and 2.8%; and >/= 10,000 CFUs/mL: 4.2%, 3.5%, and 4.9%, respectively (no significant statistical difference across treatments). The proportion of patients with confirmed UTI was similar between dalfampridine-ER and placebo, thus suggesting that the treatment does not increase the risk of UTIs. FAU - Kantor, Daniel AU - Kantor D AD - Neurologique Foundation, Inc. , Ponte Vedra Beach, FL , USA. FAU - Chancellor, Michael B AU - Chancellor MB FAU - Snell, Clayton W AU - Snell CW FAU - Henney, Herbert R 3rd AU - Henney HR 3rd FAU - Rabinowicz, Adrian L AU - Rabinowicz AL LA - eng SI - ClinicalTrials.gov/NCT01328379 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150106 PL - England TA - Postgrad Med JT - Postgraduate medicine JID - 0401147 RN - 0 (Delayed-Action Preparations) RN - 0 (Potassium Channel Blockers) RN - BH3B64OKL9 (4-Aminopyridine) SB - IM MH - 4-Aminopyridine/administration & dosage/therapeutic use MH - Adult MH - Aged MH - Delayed-Action Preparations MH - Female MH - Humans MH - Male MH - Middle Aged MH - Multiple Sclerosis/*drug therapy MH - Potassium Channel Blockers/administration & dosage MH - Urinary Tract Infections MH - Young Adult OTO - NOTNLM OT - 4-aminopyridine OT - MS relapse OT - dalfampridine OT - multiple sclerosis OT - urinary tract infection EDAT- 2015/01/07 06:00 MHDA- 2015/09/09 06:00 CRDT- 2015/01/07 06:00 PHST- 2015/01/07 06:00 [entrez] PHST- 2015/01/07 06:00 [pubmed] PHST- 2015/09/09 06:00 [medline] AID - 10.1080/00325481.2015.1000229 [doi] PST - ppublish SO - Postgrad Med. 2015 Mar;127(2):218-22. doi: 10.1080/00325481.2015.1000229. Epub 2015 Jan 6.