IMPORTANCE:Patients co-infected with human immunodeficiency virus (HIV) and hepatitis C virus (HCV) are at high risk for liver disease progression. However, interferon-based treatments for HCV infection have significant toxicities, limiting treatment uptake. OBJECTIVE:To assess the all-oral 3 direct-acting antiviral (3D) regimen of ombitasvir, paritaprevir (co-dosed with ritonavir [paritaprevir/r]), dasabuvir, and ribavirin in HCV genotype 1-infected adults with HIV-1 co-infection, including patients with cirrhosis. DESIGN, SETTING, AND PARTICIPANTS:TURQUOISE-I is a randomized, open-label study. Part 1a of this pilot study was conducted at 17 sites in the United States and Puerto Rico between September 2013 and August 2014 and included 63 patients with HCV genotype 1 and HIV-1 co-infection who were HCV treatment-naive or had history of prior treatment failure with peginterferon plus ribavirin therapy. The study allowed enrollment of patients, including those with cirrhosis, with a CD4+ count of 200/mm3 or greater or CD4+ percentage of 14% or more and plasma HIV-1 RNA suppressed while taking a stable atazanavir- or raltegravir-inclusive antiretroviral regimen. INTERVENTIONS:Ombitasvir/paritaprevir/r, dasabuvir, and ribavirin for 12 or 24 weeks of treatment as randomized. MAIN OUTCOMES AND MEASURES:The primary assessment was the proportion of patients with sustained virologic response (HCV RNA <25 IU/mL) at posttreatment week 12 (SVR12). RESULTS:Among patients receiving 12 or 24 weeks of 3D and ribavirin, SVR12 was achieved by 29 of 31 (94%; 95% CI, 79%-98%) and 29 of 32 patients (91%; 95% CI, 76%-97%), respectively. Of the 5 patients who did not achieve SVR, 1 withdrew consent, 2 had confirmed virologic relapse or breakthrough, and 2 patients had clinical history and phylogenetic evidence consistent with HCV reinfection. The most common treatment-emergent adverse events were fatigue (48%), insomnia (19%), nausea (18%), and headache (16%). Adverse events were generally mild, with none reported as serious or leading to discontinuation. No patient had a confirmed HIV-1 breakthrough of 200 copies/mL or greater during treatment. CONCLUSIONS AND RELEVANCE:In this open-label, randomized uncontrolled study, treatment with the all-oral, interferon-free 3D-plus-ribavirin regimen resulted in high SVR rates among patients co-infected with HCV genotype 1 and HIV-1 whether treated for 12 or 24 weeks. Further phase 3 studies of this regimen are warranted in patients with co-infection. TRIAL REGISTRATION:clinicaltrials.gov Identifier: NCT01939197.

Background: CCR5 modified autologous CD4 cells (SB-728-T) are safe and increases total CD4 counts. The cells traffic to lymphoid tissues and have a selective survival advantage during ART treatment interruption (TI). Additional studies in CCR5 D32 heterozygote HIV subjects showed VL reductions during TI correlated with circulating bi-allelic CCR5-modified CD4 cells supporting the importance of maximizing engraftment. Low dose CTX has been successfully used to increase T cell engraftment. This study examines the effect of escalating doses of CTX on SB-728-T engraftment. Methods: A dose escalation study of IV CTX, with doses ranging from 100 mg/m2 to 2 g/m2 (n=3-6/cohort), administered 1-3 days prior to SB-728-T (>90% CD4, <1% CD8) infusion was performed in 18 aviremic, ART treated HIV subjects with CD4 T cells ≥500/uL. Results: CTX was generally well tolerated with low grade GI side-effects, managed with anti-emetics, at doses up to 1 g/m2. Grade 3 and 4 neutropenia requiring G-CSF developed at 1.5 and 2.0 g/m2 CTX. On Day 7, a dose-related increase in CD4 count and engraftment of bi-allelic CCR5 modified cells was observed with CTX doses up to 1 g/m2 but did not increase at 2.0 and 1.5 g/m2. By comparison, there was a progressive decline in CD8 cells with CTX dose escalation. Data is expressed as Mean +/- SE in Table 1.Table 1100 mg/m2500 mg/m21 g/m22 g/m21.5 g/m2ΔCD4 (cells/uL)776±5021695±5182700±9661370±7211396±367ΔCD8 (cells/uL)98±49180±117−210±7−424±63−164±161Bi-allelic (cells/uL)55±42102±24169±67142±30180±25 Open table in a new tab A 1-log VL reduction from peak was seen in 1 subject each at 100 and 500 mg/m2 of CTX while 1 subject each at the 1 and 1.5 g/m2 dose level had a 2-log decline during a TI. At the conclusion of the study, 3 additional subjects were conditioned with 1 g/m2 of CTX and administered CCR5 modified T cells containing 46.9+/-6.4% CD8 cells. CD8 count increased by 2236+/-967/uL (range 1029-4150/uL) with only modest increases in CD4 counts (733+/-233/uL; range 297-1096/uL) at 7 days in the 3 subjects. Two of the three subjects have had modest increases in VL to date during TI (<1000 copies/mL), suggesting an effect on viral control with the added CD8 T cells. Conclusion: CTX conditioning is generally well tolerated and was associated with increased engraftment of CCR5-modified T cells at doses up to 1 g/m2 in HIV subjects. CTX conditioning may be a useful strategy to maximize the engraftment and anti-viral effects of SB-728-T. The effects of co-administering CD8 cells with SB-728-T on VL will be presented.

OBJECTIVE:Whether concomitant HIV antiretroviral therapy (ART) affects the safety and efficacy of interferon-free HCV therapies or whether HCV treatment may negatively affect HIV control is unclear. We assessed the 3 direct-acting antiviral (3D) regimen of ombitasvir, ABT-450 (identified by AbbVie and Enanta; co-dosed with ritonavir) and dasabuvir with ribavirin (RBV) in HCV/HIV-1 co-infected patients with and without cirrhosis, including HCV treatment-experienced, receiving atazanavir (ATV)- or raltegravir (RAL)-based ART therapy.METHODS:HCV genotype 1-positive treatment-naïve or pegIFN/RBV-experienced patients, with or without Child-Pugh A cirrhosis, CD4+ count ≥200 cells/mm(3) or CD4 + % ≥14%, and plasma HIV-1 RNA suppressed on stable ART received open-label 3D + RBV for 12 or 24 weeks. Rates of HCV-sustained virologic response at post-treatment weeks 4 and 12 (SVR4 and SVR12, respectively) and bilirubin-related adverse events (AEs) are reported from post-hoc analyses for subgroups defined by treatment duration and ART regimen.RESULTS:The SVR12 rate for patients receiving 12 weeks of 3D + RBV was 93.5% with comparable rates in patients receiving either ATV (93.8%) or RAL therapy (93.3%) (Table 1). The SVR4 rate for the 24-week arm was 96.9% with a single virologic breakthrough at treatment week 16 in a patient receiving RAL therapy. Patients receiving concomitant ATV had more AEs related to indirect hyperbilirubinemia including ocular icterus, jaundice and grade 3 or 4 elevations in total bilirubin (predominantly indirect). No patient discontinued the study due to AEs, and no serious AEs were reported during or after treatment. No patient had a confirmed plasma HIV-1 RNA value ≥200 copies/mL during the treatment period.CONCLUSIONS:In this first study to evaluate an IFN-free regimen in HCV genotype 1-positive treatment-naïve and experienced patients with HIV-1 co-infection, including those with cirrhosis, high rates of SVR were comparable to those with HCV monoinfection. Indirect hyperbilirubinemia was consistent with the known ABT-450 inhibition of the OATP1B1 bilirubin transporter, RBV-related haemolytic anaemia and inhibitory effect of ATV on bilirubin conjugation. The laboratory abnormalities and AEs observed did not negatively affect treatment response or lead to treatment discontinuation.

Background The Phase III VIKING-3 study demonstrated that dolutegravir (DTG) 50 mg twice daily was efficacious in antiretroviral therapy (ART)-experienced subjects habouring raltegravir- and/or elvitegravir-resistant HIV-1. VIKING-4 (ING116529) included a placebo-controlled 7-day monotherapy phase to demonstrate that short-term antiviral activity was attributable to DTG. Methods VIKING-4 is a Phase III randomized, double-blind study in therapy-experienced adults with integrase inhibitor (INI)-resistant virus randomized to DTG 50 mg twice daily or placebo while continuing their failing regimen (without raltegravir or elvitegravir) for 7 days (clinicaltrials.gov identifier NCT01568892). At day 8, all subjects switched to open-label DTG 50 mg twice daily and optimized background therapy including ≥1 fully active drug. The primary end point was change from baseline in plasma HIV-1 RNA at day 8. Results The study population (n=30) was highly ART-experienced with advanced HIV disease. Patients had extensive baseline resistance to all approved antiretroviral classes. Adjusted mean change in HIV-1 RNA at day 8 was -1.06 log10 copies/ml for the DTG arm and 0.10 log10 copies/ml for the placebo arm (treatment difference -1.16 log10 copies/ml [-1.52, -0.80]; P<0.001). Overall, 47% and 57% of subjects had plasma HIV-1 RNA <50 and <400 copies/ml at week 24, and 40% and 53% at week 48, respectively. No discontinuations due to drug-related adverse events occurred in the study. Conclusions The observed day 8 antiviral activity in this highly treatment-experienced population with INI-resistant HIV-1 was attributable to DTG. Longer-term efficacy (after considering baseline ART resistance) and safety during the open-label phase were in-line with the results of the larger VIKING-3 study.

Abstract Background: Although hypogonadism is common in men with human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS), testosterone levels after testosterone replacement therapy (TRT) in this population have not been reported. Methods: The Testim Registry in the United States (TRiUS) was the first prospective, observational registry of men with hypogonadism who were prescribed TRT. The TRiUS cohorts with (n = 82) and without (n = 767) HTV/AIDS were followed during 12 months of treatment with Testim® (1% testosterone gel; Auxilium Pharmaceuticals, Inc.). Total testosterone (TT) and free testosterone levels, symptoms of depression, sexual function, body composition profiles, and prostate-specific antigen levels were evaluated. Results: The HIV/AIDS and non-HIV/AIDS cohorts differed at baseline in age (48.3 vs 52.5 years), TT level (13.0 vs 9.6 nmol/L), duration of hypogonadism (27.1 vs 14.6 months), prior TRT (36.6% vs 22.6%), body mass index (26.5 vs 32.0 kg/m2), and antidepressant (29% vs 15%) and opioid (20% vs 10%) use (P ≤ 0.01 for all comparisons). During the 12 months, both cohorts experienced significant elevations in TT and free testosterone levels to within normal ranges. Sexual function and depression scores improved and antidepressant medication use decreased in both cohorts. Body composition profiles improved significantly (P < 0.05) in men without HIV/AIDS and remained stable in men with HIV/AIDS during the 12 months of follow-up. Conclusion: This 12-month, non-placebo-controlled, observational study of Testim® use in men with and without HIV/AIDS suggests that TRT may provide clinical benefits irrespective of the patient's HIV/AIDS status. This conclusion is supported by the higher testosterone levels, better sexual function, lower depression scores, and better body composition profiles found in both groups. However, given the loss of patients to follow-up, these results may reflect a bias toward drug responders.

Background Lentiviral vectors are being used with increasing frequency in human clinical trials. We were the first to use lentiviral vectors in clinical trials in 2003. Our lentiviral vector encoded a long RNA antisense sequence to the HIV-1 envelope and was used in an ex vivo autologous setting to provide viral load control in HIV-1 positive subjects failing anti-HIV therapy. A total of 65 subjects have been treated in Phase 1 and Phase 2 trials in six institutions. Methods Good manufacturing practices (GMP) lots of the lentiviral vector used in our clinical trials were assayed for the presence of replication competent lentivirus (RCL). RCL assays were conducted at two stages. The first testing was performed on samples collected immediately following bulk harvest of the GMP product lot and consisted of 1x108 cells used in production. RCL assays were also performed on aliquots of the final fill of the vector by the inoculation of at least 5% of the GMP final fill volume into C8166 cells, passaged for at least ten passages and tested for RCL by p24 enzyme-linked immunosorbent assay and vesicular stomatitis virus-G envelope DNA. Results Following 263 infusions of autologous, transduced cells, no adverse events have been detected in these subjects, with some followed for more than 8years following infusions. More than 4.3x1012 VRX496 proviral copies were administered to these 65 subjects. Conclusions Data from this small population suggest that there is no apparent risk for serious adverse events with the use of lentiviral vectors. Copyright (c) 2013 John Wiley & Sons, Ltd.

OBJECTIVES:To determine the incidence of hypogonadism in men with human immunodeficiency virus (HIV)/acquired immunodeficiency virus (AIDS), the most useful serum testosterone measurement and threshold for diagnosing hypogonadism, and the comparative efficacy of 2 testosterone replacement therapy (TRT) 1% gels (AndroGel® [Abbott Laboratories] and Testim® [Auxilium Pharmaceuticals, Inc.]). DESIGN AND SUBJECTS:This was a 2-stage observational study. In stage 1, patient records from 2 medical practices specializing in HIV/AIDS were reviewed. Eligible patients were aged ≥ 18 years; had HIV-seropositive status confirmed by enzyme-linked immunosorbent assay and western blot test or HIV-1 viremia confirmed by HIV-1 RNA polymerase chain reaction; and had prior baseline testosterone assessments for hypogonadism (ie, presence of signs/symptoms of hypogonadism as well as total testosterone [TT] and free testosterone [FT] level measurements). Stage 2 included the evaluation of patients from stage 1 who were treated with 5 to 10 g/day of TRT. The stage 2 inclusion criteria were a diagnosis of low testosterone (defined as TT level < 300 ng/dL and/or FT level < 50 pg/mL, as per The Endocrine Society guidelines and presence/absence of hypogonadal signs and symptoms); ≥ 12 months of evaluable sign and symptom assessments and TT/FT level measurements while on TRT with either Testim® or AndroGel®; and ≥ 4 weeks on initial TRT if the initial TRT was switched or discontinued. RESULTS:Four hundred one of 422 patients met the stage 1 inclusion criteria and 167 of 401 patients (AndroGel®, n = 92; Testim®, n = 75) met the stage 2 inclusion criteria. Total testosterone level < 300 ng/dL alone identified 24% (94 of 390) of patients as hypogonadal, but failed to diagnose an additional 111 patients (67.7%) with FT levels < 100 pg/mL and hypogonadal symptoms. Through month 12, AndroGel® increased mean TT levels by +42.8% and FT levels by +66.9%, compared with +178.7% (P = 0.017) and +191% (P = 0.039), respectively, for Testim®. Patients treated with Testim® showed significantly greater improvements in libido, sexual performance, nighttime energy, focus/concentration, and abdominal girth, and trends for greater improvement in fatigue and erectile dysfunction than patients treated with AndroGel®. No patients discontinued therapy due to adverse events. CONCLUSION:The most useful serum testosterone measurement and threshold for diagnosing hypogonadism in men with HIV/AIDS was FT level < 100 pg/mL, which identified 64% of men as hypogonadal with the presence of ≥ 1 hypogonadal symptom. This is above currently accepted thresholds. Criteria using TT level < 300 ng/dL and FT level < 50 pg/mL only diagnosed 24% and 19% of patients, respectively, as having hypogonadism. Testim® was more effective than AndroGel® in increasing TT and FT levels and improving hypogonadal symptoms.

Background: Testosterone decline becomes more prevalent as men age and symptomatic testosterone deficiency is associated with potentially serious comorbidities. Despite limitations, registries can provide an opportunity to accumulate data regarding disease management in a typical patient population, including diagnosis, treatment, and outcomes. Materials and Methods: The Testim Registry in the United States (TRiUS) was a prospective, 12-month, observational cohort registry of men prescribed Testim (R) (1% testosterone gel; Auxilium Pharmaceuticals, Inc.) for the first time; patients previously on other forms of testosterone replacement therapy (TRT) were eligible to participate in the study as well. The registry recorded total testosterone (TT) and free testosterone (FT) levels, prostate-specific antigen (PSA), sexual function, mood/depression, and cardiometabolic and anthropometric criteria before and after TRT. Changes over time were analyzed by analysis of variance, and linear regression and Pearson product-moment correlation coefficients were used to examine relationships between variables. Results: At baseline, 849 patients from 72 sites were enrolled, with 743 of 849 started on 5 g gel/day (50 mg testosterone/day) and 106 of 849 started on 10 g gel/day (100 mg testosterone/day). Mean TT and FT levels increased significantly after 3 months of TRT (TT level, 16.8 +/- 9.87 nmol/L [485 +/- 284 ng/dL], P < 0.001; FT level, 286.3 +/- 224.9 pmol/L [82.5 +/- 64.8 pg/mL], P < 0.001) and were maintained at eugonadal levels. Mean PSA levels increased significantly (P = 0.004) from 1.12 +/- 1.11 mu g/L (1.12 +/- 1.11 ng/mL) at baseline to 1.26 +/- 1.22 mu g/L (1.26 +/- 1.22 ng/mL) after 12 months of TRT, although changes were well within guidelines (< 1.4 mu g/L/year increase). Significant improvements were seen in sexual function and mood/depression at 3 months and in metabolic parameters at 12 months. Conclusion: Testosterone deficiency symptoms improved with TRT use in men; sexual function and mood/depression improvements were seen before metabolic improvements. Prostate-specific antigen levels increased, although increases were within guideline-determined safety limits.

BACKGROUND Studies of injectable poly-l-lactic acid (PLLA) in human immunodeficiency virus (HIV)-associated facial lipoatrophy have predominantly included male Caucasians. OBJECTIVE To report cumulative year 2 interim study results examining the safety and efficacy of injectable PLLA in subjects with HIV categorized according to Fitzpatrick skin type and sex. MATERIALS AND METHODS This is an ongoing open-label, multicenter, 5-year study of 290 treated subjects. After correction with injectable PLLA, subjects are being followed annually. Primary end points include incidence and severity of treatment-emergent adverse events (TEAEs). Secondary end points include mean change from baseline of James scale severity grade and treatment satisfaction. RESULTS At 2 years, TEAE incidences were: potentially related to study product (n = 53,18.3%) or injection procedure (n = 71, 24.5%), injection-site nodules (n = 24, 8.3%) and papules (n = 25, 8.6%). No hypertrophic scars, keloids, or product-related serious TEAEs were reported. Mean improvement in James scale grade for all groups was 1.4 (p < .001), and 89.4% of subjects and 95.5% of physicians rated treatment satisfaction as very good or excellent. CONCLUSION At 2 years, injectable PLLA is a safe and effective long-term treatment for HIV-associated facial lipoatrophy regardless of Fitzpatrick skin type; confirmation of these results will be needed at the completion of this 5-year study.

Background: Testosterone levels naturally decline with age in men, often resulting in testosterone deficiency (hypogonadism). However, few studies have examined hypogonadal characteristics and treatment in older (>65 years) men.Objective: To compare data at baseline and after 12 months of testosterone replacement therapy (TRT) in hypogonadal men >= 65 vs <65 years old. Data for participants 65-74 vs >= 75 years old were also compared.Methods: Data were from TRiUS (Testim Registry in the United States), which enrolled 849 hypogonadal men treated with Testim (R) 1% (50-100 mg testosterone gel/day) for the first time. Anthropometric, laboratory, and clinical measures were taken at baseline and 12 months, including primary outcomes of total testosterone (TT), free testosterone (FT), and prostate-specific antigen (PSA) levels. Comparisons of parameters were made using Fisher's exact test or analysis of variance. Nonparametric Spearman's rho and first-order partial correlation coefficients adjusted for the effect of age were used to examine bivariate correlations among parameters.Results: Of the registry participants at baseline with available age information, 16% (133/845) were >65 years old. They were similar to men <65 years old in the duration of hypogonadism prior to enrollment (similar to 1 year), TT and FT levels at baseline, TT and FT levels at 12-month follow-up, and in reported compliance with treatment. Older patients were more likely to receive lower doses of TRT. PSA levels did not statistically differ between groups after 12 months of TRT (2.18 +/- 2.18 ng/mL for >= 65 vs 1.14 +/- 0.84 ng/mL for <65 years old, P = 0.1). Baseline values for the >75-year-old subcohort were not significantly different from subcohorts aged 65-74 years and <65 years.Conclusion: Hypogonadal men >= 65 years old showed significant benefit from TRT over 12 months, similar to that found for hypogonadal men <65 years old. TRT was well tolerated in older patients, successfully increased testosterone level regardless of age, and did not significantly increase PSA levels in older men.

OBJECTIVE Among patients with hypogonadism-associated comorbidities, opioid users have the highest incidence of hypogonadism. Data from the Testim Registry in the United States were analyzed to determine the efficacy of testosterone replacement therapy in opioid users vs nonusers. DESIGN Prospective, 12-month observational cohort registry. SUBJECTS Hypogonadal men (N = 849) prescribed Testim (but not necessarily testosterone replacement) for the first time. INTERVENTIONS Testim 1% testosterone gel (5-10 g/day). OUTCOME MEASURES Total and free testosterone, sex hormone-binding globulin, prostate-specific antigen, sexual function, mood/depression, and anthropometric data were assessed. Changes from baseline were analyzed using repeated measures mixed-effects analysis of variance; multiple linear regressions of changes in testosterone levels with sexual function, mood, and opioid use were computed. RESULTS 90/849 patients (10.6%) reported opioid use at baseline; 75/90 (83%) used opioids for ≥ 30 days prior to baseline. Baseline total testosterone and prostate-specific antigen were not statistically different between opioid users and nonusers; there was a trend for higher sex hormone-binding globulin (P = 0.08) and lower free testosterone (P = 0.05) in opioid users. After 1 month, both opioid users and nonusers had significant (P < 0.001) increases in total and free testosterone, which continued through 12 months. Sexual function and mood improved significantly in both opioid users and nonusers over 12 months, and significantly correlated with change in total testosterone. CONCLUSIONS Testosterone replacement therapy increased serum testosterone in hypogonadal opioid users and nonusers alike. The data suggest that with testosterone replacement, hypogonadal opioid users might be expected to have similar improvements in sexual function and mood as opioid nonusers.

Purpose: We measured prostate specific antigen after 12 months of testosterone replacement therapy in hypogonadal men.Materials and Methods: Data were collected from the TRiUS (Testim(R) Registry in the United States), an observational registry of hypogonadal men on testosterone replacement therapy (849). Participants were Testim naive, had no prostate cancer and received 5 to 10 gm Testim 1% (testosterone gel) daily.Results: A total of 451 patients with prostate specific antigen and total testosterone values were divided into group A (197 with total testosterone less than 250 ng/dl) and group B (254 with total testosterone 250 ng/dl or greater). The groups differed significantly in free testosterone and sex hormone-binding globulin, but not in age or prostate specific antigen. In group A but not group B prostate specific antigen correlated significantly with total testosterone (r = 0.20, p = 0.005), free testosterone (r = 0.22, p = 0.03) and sex hormone-binding globulin (r = 0.59, p = 0.002) at baseline. After 12 months of testosterone replacement therapy, increase in total testosterone (mean +/- SD) was statistically significant in group A (+326 +/- 295 ng/dl, p <0.001; final total testosterone 516 +/- 28 ng/dl) and group B (+154 +/- 217 ng/dl, p <0.001; final total testosterone 513 +/- 20 ng/dl). After 12 months of testosterone replacement therapy, increase in prostate specific antigen was statistically significant in group A (+0.19 +/- 0.61 ng/ml, p = 0.02; final prostate specific antigen 1.26 +/- 0.96 ng/ml) but not in group B (+0.28 +/- 1.18 ng/ml, p = 0.06; final prostate specific antigen 1.55 +/- 1.72 ng/ml). The average percent prostate specific antigen increase from baseline was higher in group A (21.9%) than in group B (14.1%). Overall the greatest prostate specific antigen was observed after 1 month of treatment and decreased thereafter.Conclusions: Patients with baseline total testosterone less than 250 ng/dl were more likely to have an increased prostate specific antigen after testosterone replacement therapy than those with baseline total testosterone 250 ng/dl or greater, supporting the prostate saturation hypothesis. Clinicians should be aware that severely hypogonadal patients may experience increased prostate specific antigen after testosterone replacement therapy.

Background Recent evidence suggests that there may be a bidirectional, physiological link between hypogonadism and metabolic syndrome (MetS), and testosterone replacement therapy (TRT) has been shown to improve some symptoms of MetS in small patient populations. We examined the effect of 12 months of TRT on MetS components in a large cohort of hypogonadal men. Methods Data were obtained from TRiUS (Testim ® Registry in the United States), a 12-month, multicenter, prospective observational registry (N = 849) of hypogonadal men prescribed Testim 1% testosterone gel (5-10 g/day). Data analyzed included age, total testosterone (TT), free testosterone (FT), sex hormone-binding globulin (SHBG), and MetS components: waist circumference, blood pressure, fasting blood glucose, plasma triglycerides, and HDL cholesterol. Results Of evaluable patients (581/849) at baseline, 37% were MetS+ (n = 213) and 63% were MetS- (n = 368). MetS+ patients had significantly lower TT (p < 0.0001) and SHBG (p = 0.01) levels. Patients with the lowest quartile TT levels (<206 ng/dL [<7.1 nmol/L]) had a significantly increased risk of MetS+ classification vs those with highest quartile TT levels (≥331 ng/dL [≥11.5 nmol/L]) (odds ratio 2.66; 95% CI, 1.60 to 4.43). After 12 months of TRT, TT levels significantly increased in all patients (p < 0.005). Despite having similar TT levels after TRT, only MetS+ patients demonstrated significant decreases in waist circumference, fasting blood glucose levels, and blood pressure; lowest TT quartile patients demonstrated significant decreases in waist circumference and fasting blood glucose. Neither HDL cholesterol nor triglyceride levels changed significantly in either patient population. Conclusion Hypogonadal MetS+ patients were more likely than their MetS- counterparts to have lower baseline TT levels and present with more comorbid conditions. MetS+ patients and those in the lowest TT quartile showed improvement in some metabolic syndrome components after 12 months of TRT. While it is currently unclear if further cardiometabolic benefit can be seen with longer TRT use in this population, testing for low testosterone may be warranted in MetS+ men with hypogonadal symptoms.

INTRODUCTION:Up to 30% of erectile dysfunction (ED) patients treated with phosphodiesterase type 5 (PDE5) inhibitors do not show improved sexual function, which may be due in part to low serum testosterone. Hypogonadal patients already receiving testosterone replacement therapy (TRT) likewise can still suffer from symptoms of sexual dysfunction. In these patient populations, augmenting with, or switching, TRT treatment may improve sexual function.AIM:To determine if 12-month treatment with a testosterone gel improves sexual function in hypogonadal men, as measured by the Brief Male Sexual Function Inventory (BMSFI), and in subgroups defined by low testosterone, PDE5 inhibitor use, and prior TRT.METHODS:The Testim Registry in the United States (TRiUS) was a large (N = 849) multicenter registry of hypogonadal men treated with Testim (testosterone 1%) topical gel and followed for 12 months.MAIN OUTCOME MEASURES:Data collected at suggested visits (baseline; 1, 3, 6, and 12 months) included total testosterone (TT), free testosterone (FT), BMSFI scores, physical exam, and body measurements.RESULTS:TRiUS had 271 patients with baseline testosterone and BMSFI measurements. At 12 months of TRT, TT and FT levels significantly increased from baseline (P < 0.001), with mean ± standard deviation final TT = 17.37 ± 8.61 nmol/L (500.6 ± 248.2 ng/dL) and FT = 240.1 ± 296.0 pmol/L (69.2 ± 85.3 pg/mL). The mean total BMSFI score significantly increased from baseline at 12 months (27.4 ± 10.3 to 33.8 ± 9.8, P < 0.001) and at each visit in all domains (sex drive/libido, erectile function, ejaculatory function, level of bother), overall and for all subgroups. Regression analysis indicated that increased total BMSFI score was significantly associated with increased TT levels at 6 months.CONCLUSIONS:In hypogonadal patients, 12-month administration of topical testosterone gel resulted in increased TT and FT levels and significantly improved sexual function. All subgroups studied, including men taking PDE5 inhibitors for ED and those previously on TRT, demonstrated significant improvement in sexual function from baseline scores.