TY - JOUR
T1 - NGX-4010, a capsaicin 8% patch, for the treatment of painful HIV-associated distal sensory polyneuropathy
T2 - Integrated analysis of two phase III, randomized, controlled trials
AU - Brown, Stephen
AU - Simpson, David M.
AU - Moyle, Graeme
AU - Brew, Bruce J.
AU - Schifitto, Giovanni
AU - Larbalestier, Nicholas
AU - Orkin, Chloe
AU - Fisher, Martin
AU - Vanhove, Geertrui F.
AU - Tobias, Jeffrey K.
N1 - Funding Information:
Funding for these studies was provided by NeurogesX, Inc. Editorial assistance was provided by Adelphi Communications, supported by Astellas Pharma Europe Ltd.
Funding Information:
DMS has received consultancy fees and/or honorarium or speaker fees from NeurogesX, Astellas Pharma Europe Ltd., Eli Lilly and Pfizer. DMS’s institute has received grants from NeurogesX, Astra Zeneca and Pfizer. MF has received speaker fees and funding to attend a conference from Astellas. SB’s institute, AIDS Research Alliance, received grants to conduct the research. GS received funds as site investigator. JKT and GFV are former employees of NeurogesX and still own stock in NeurogesX.
PY - 2013/1/28
Y1 - 2013/1/28
N2 - Background: HIV-associated distal sensory polyneuropathy (HIV-DSP) is the most frequently reported neurologic complication associated with HIV infection. NGX-4010 is a capsaicin 8% dermal patch with demonstrated efficacy in the treatment of HIV-DSP. Data from two phase III, double-blind studies were integrated to further analyze the efficacy and safety of NGX-4010 and explore the effect of demographic and baseline factors on NGX-4010 treatment in HIV-DSP.Methods: Data from two similarly designed studies in which patients with HIV-DSP received NGX-4010 or a low-concentration control patch (capsaicin 0.04% w/w) for 30 or 60 minutes were integrated. Efficacy assessments included the mean percent change from baseline in Numeric Pain Rating Scale (NPRS) scores to Weeks 2-12. Safety and tolerability assessments included adverse events (AEs) and pain during and after treatment.Results: Patients (n = 239) treated with NGX-4010 for 30 minutes demonstrated significantly (p = 0.0026) greater pain relief compared with controls (n = 100); the mean percent change in NPRS scores from baseline to Weeks 2-12 was -27.0% versus -15.7%, respectively. Patients who received a 60-minute application of NGX-4010 (n = 243) showed comparable pain reductions (-27.5%) to patients treated for 30 minutes, but this was not statistically superior to controls (n = 115). NGX-4010 was effective regardless of gender, baseline pain score, duration of HIV-DSP, or use of concomitant neuropathic pain medication, although NGX-4010 efficacy was greater in patients not receiving concomitant neuropathic pain medications. NGX-4010 was well tolerated; the most common AEs were application-site pain and erythema, and most AEs were mild to moderate. The transient increase in pain associated with NGX-4010 treatment decreased the day after treatment and returned to baseline by Day 2.Conclusions: A single 30-minute application of NGX-4010 provides significant pain relief for at least 12 weeks in patients with HIV-DSP and is well tolerated.Trial registration: C107 = NCT00064623; C119 = NCT00321672.
AB - Background: HIV-associated distal sensory polyneuropathy (HIV-DSP) is the most frequently reported neurologic complication associated with HIV infection. NGX-4010 is a capsaicin 8% dermal patch with demonstrated efficacy in the treatment of HIV-DSP. Data from two phase III, double-blind studies were integrated to further analyze the efficacy and safety of NGX-4010 and explore the effect of demographic and baseline factors on NGX-4010 treatment in HIV-DSP.Methods: Data from two similarly designed studies in which patients with HIV-DSP received NGX-4010 or a low-concentration control patch (capsaicin 0.04% w/w) for 30 or 60 minutes were integrated. Efficacy assessments included the mean percent change from baseline in Numeric Pain Rating Scale (NPRS) scores to Weeks 2-12. Safety and tolerability assessments included adverse events (AEs) and pain during and after treatment.Results: Patients (n = 239) treated with NGX-4010 for 30 minutes demonstrated significantly (p = 0.0026) greater pain relief compared with controls (n = 100); the mean percent change in NPRS scores from baseline to Weeks 2-12 was -27.0% versus -15.7%, respectively. Patients who received a 60-minute application of NGX-4010 (n = 243) showed comparable pain reductions (-27.5%) to patients treated for 30 minutes, but this was not statistically superior to controls (n = 115). NGX-4010 was effective regardless of gender, baseline pain score, duration of HIV-DSP, or use of concomitant neuropathic pain medication, although NGX-4010 efficacy was greater in patients not receiving concomitant neuropathic pain medications. NGX-4010 was well tolerated; the most common AEs were application-site pain and erythema, and most AEs were mild to moderate. The transient increase in pain associated with NGX-4010 treatment decreased the day after treatment and returned to baseline by Day 2.Conclusions: A single 30-minute application of NGX-4010 provides significant pain relief for at least 12 weeks in patients with HIV-DSP and is well tolerated.Trial registration: C107 = NCT00064623; C119 = NCT00321672.
KW - Capsaicin 8% patch
KW - HIV-associated distal sensory polyneuropathy
KW - NGX-4010
KW - Neuropathic pain
UR - http://www.scopus.com/inward/record.url?scp=84875651599&partnerID=8YFLogxK
U2 - 10.1186/1742-6405-10-5
DO - 10.1186/1742-6405-10-5
M3 - Article
AN - SCOPUS:84875651599
SN - 1742-6405
VL - 10
JO - AIDS Research and Therapy
JF - AIDS Research and Therapy
IS - 1
M1 - 5
ER -