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32 result(s) for "Hanscom, Brett"
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Cognitive function in breast cancer patients prior to adjuvant treatment
Purpose To compare the neuropsychological functioning of breast cancer patients with invasive cancer and noninvasive cancer prior to adjuvant treatment. Patients and Methods Breast cancer patients ( N  = 132) with invasive (Stages 1–3, N  = 110, age = 54.1 ± 8.1) or noninvasive (Stage 0, N  = 22, age = 55.8 ± 8.0) disease completed a battery of neuropsychological and psychological instruments following surgery but prior to initiation of chemotherapy, radiation or hormonal therapy. Matched healthy controls ( N  = 45, age = 52.9 ± 10.0) completed the same battery of instruments. For the patients, data on menstrual status, type of surgery, time of general anesthesia, CBC and platelets, nutritional status (B12 and folate), and thyroid function were collected. Results Comparison of mean neuropsychological test scores revealed that all groups scored within the normal range; however, patients with Stage 1–3 cancer scored significantly lower than healthy controls on the Reaction Time domain ( p  = 0.005). Using a definition of lower than expected cognitive performance that corrected for misclassification error, Stage 1–3 patients were significantly ( p  = 0.002) more likely to be classified as having lower than expected overall cognitive performance (22%) as compared to Stage 0 patients (0%) and healthy controls (4%). No differences were observed between patients classified as having lower than expected cognitive performance compared to those classified as normal performance on measures of depression, anxiety, fatigue, menstrual status, surgery/anesthesia or any of the blood work parameters. Conclusion Patients with Stage 1–3 breast cancer were more likely to be classified as having lower than expected cognitive performance prior to adjuvant treatment as compared to Stage 0 patients and healthy controls, although correction for misclassification error produced a lower rate than previously reported.
A scalable, integrated intervention to engage people who inject drugs in HIV care and medication-assisted treatment (HPTN 074): a randomised, controlled phase 3 feasibility and efficacy study
People who inject drugs (PWID) have a high incidence of HIV, little access to antiretroviral therapy (ART) and medication-assisted treatment (MAT), and high mortality. We aimed to assess the feasibility of a future controlled trial based on the incidence of HIV, enrolment, retention, and uptake of the intervention, and the efficacy of an integrated and flexible intervention on ART use, viral suppression, and MAT use. This randomised, controlled vanguard study was run in Kyiv, Ukraine (one community site), Thai Nguyen, Vietnam (two district health centre sites), and Jakarta, Indonesia (one hospital site). PWID who were HIV infected (index participants) and non-infected injection partners were recruited as PWID network units and were eligible for screening if they were aged 18–45 years (updated to 18–60 years 8 months into study), and active injection drug users. Further eligibility criteria for index participants included a viral load of 1000 copies per mL or higher, willingness and ability to recruit at least one injection partner who would be willing to participate. Index participants were randomly assigned via a computer generated sequence accessed through a secure web portal (3:1) to standard of care or intervention, stratified by site. Masking of assignment was not possible due to the nature of intervention. The intervention comprised systems navigation, psychosocial counselling, and ART at any CD4 count. Local ART and MAT services were used. Participants were followed up for 12–24 months. The primary objective was to assess the feasibility of a future randomised controlled trial. To achieve this aim we looked at the following endpoints: HIV incidence among injection partners in the standard of care group, and enrolment and retention of HIV-infected PWID and their injection partners and the uptake of the integrated intervention. The study was also designed to assess the feasibility, barriers, and uptake of the integrated intervention. Endpoints were assessed in a modified intention-to-treat popualtion after exclusion of ineligible participants. This trial is registered on ClinicalTrials.gov, NCT02935296, and is active but not recruiting new participants. Between Feb 5, 2015, and June 3, 2016, 3343 potential index participants were screened, of whom 502 (15%) were eligible and enrolled. 1171 injection partners were referred, and 806 (69%) were eligible and enrolled. Index participants were randomly assigned to intervention (126 [25%]) and standard of care (376 [75%]) groups. At week 52, most living index participants (389 [86%] of 451) and partners (567 [80%] of 710) were retained, and self-reported ART use was higher among index participants in the intervention group than those in the standard of care group (probability ratio [PR] 1·7, 95% CI 1·4–1·9). Viral suppression was also higher in the intervention group than in the standard of care group (PR 1·7, 95% CI 1·3–2·2). Index participants in the intervention group reported more MAT use at 52 weeks than those in the standard of care group (PR 1·7, 95% CI 1·3–2·2). Seven incident HIV infections occurred, and all in injection partners in the standard of care group (intervention incidence 0·0 per 100 person-years, 95% CI 0·0–1·7; standard of care incidence 1·0 per 100 person-years, 95% CI 0·4–2·1; incidence rate difference −1·0 per 100 person-years, 95% CI −2·1 to 1·1). No severe adverse events due to the intervention were recorded. This vanguard study provides evidence that a flexible, scalable intervention increases ART and MAT use and reduces mortality among PWID. The low incidence of HIV in both groups impedes a future randomised, controlled trial, but given the strength of the effect of the intervention, its implementation among HIV-infected PWID should be considered. US National Institutes of Health.
Safety and immunogenicity of a pentavalent meningococcal conjugate vaccine targeting serogroups A, C, W, Y, and X when co-administered with routine childhood vaccines at ages 9 months and 15 months in Mali: a single-centre, double-blind, randomised, controlled, phase 3, non-inferiority trial
Invasive meningococcal disease is a devastating public health problem for the African meningitis belt. We assessed the safety and immunogenicity of a pentavalent meningococcal conjugate vaccine targeting serogroups A, C, Y, W, and X (NmCV-5) relative to a licensed, quadrivalent meningococcal conjugate vaccine (MenACWY-TT) when co-administered with routine childhood vaccines at ages 9 months and 15 months. In this single-centre, double-blind, randomised, controlled, phase 3, non-inferiority trial, children aged 9–11 months who had completed their local infant Expanded Program on Immunization (EPI) vaccines were recruited at the Centre pour le Développement des Vaccins in Bamako, Mali. Participants were randomly assigned (1:1·2) at their 9-month EPI visits to receive a meningococcal vaccine at either their 9-month or 15-month EPI vaccination visits. At each participant's designated EPI visit, they were randomly assigned a second time (2:1) to receive either NmCV-5 or MenACWY-TT. Study vaccines and designated EPI vaccines were prepared and administered by assigned unmasked study personnel. Parents or guardians, investigators, and all other trial staff were masked to meningococcal vaccine assignments. The meningococcal vaccines were co-administered with a measles and rubella vaccine (first dose) and a yellow fever vaccine at age 9 months or with a measles and rubella vaccine (second dose) at age 15 months. The primary endpoint, seroprotective response, was defined as a rabbit complement serum bactericidal antibody titre of 8 or higher, with the estimand, given as the difference in the proportions of participants for each of the five meningococcal serogroups who showed this response 28 days after vaccination, assessed in the per-protocol population. The prespecified non-inferiority margin was –10% for all five serogroups in both age groups. The non-inferiority of the NmCV-5 seroprotective response to serogroup X was evaluated in comparison with the lowest seroprotective response for MenACWY-TT among serogroups A, C, W, or Y. Safety was a secondary endpoint, assessed over 6 months in a modified intention-to-treat population that included all participants who received a randomly assigned meningococcal vaccine. This trial is registered with ClinicalTrials.gov, NCT05093829. Between March 24 and Aug 15, 2022, 1325 participants were enrolled and randomly assigned to receive a meningococcal vaccine at either age 9 months (n=602) or age 15 months (n=723). Meningococcal vaccines were administered to 600 of the 602 participants assigned to the 9-month vaccination group during that same period. Between Sept 27, 2022, and Feb 6, 2023, 600 participants received meningococcal vaccines at their 15-month visits. In both groups, 400 participants received NmCV-5 and 200 participants received MenACWY-TT. The per-protocol population assessed in the non-inferiority analysis included 564 participants vaccinated at age 9 months (373 who received NmCV-5 and 191 who received MenACWY-TT) and 549 participants vaccinated at age 15 months (367 who received NmCV-5 and 182 who received MenACWY-TT). Among the participants in the per-protocol population who received NmCV-5 at age 9 months, the difference in seroprotection prevalence for NmCV-5 relative to MenACWY-TT was 0·0% (95% CI –1·0 to 2·0) for serogroup A, –0·5% (–2·3 to 1·9) for serogroup C, –3·0% (–6·3 to 0·8) for serogroup W, and –3·0% (–5·4 to –0·4) for serogroup Y. For serogroup X, non-inferiority was assessed relative to seroprotection for serogroup W in participants who received MenACWY-TT, with a difference of 2·3% (95% CI 0·3 to 4·7). The difference in the prevalence of seroprotection among the participants who received NmCV-5 at age 15 months relative to participants who received MenACWY-TT at age 15 months was 0·8% (95% CI –0·6 to 3·7) for serogroup A, –0·8% (–3·3 to 2·5) for serogroup C, 0·3% (–1·8 to 3·5) for serogroup W, and 1·4% (–0·6 to 4·8) for serogroup Y. For serogroup X, non-inferiority was assessed in relation to seroprotection for serogroup Y in participants who received MenACWY-TT, with a difference of 1·9% (95% CI 0·0 to 4·4). NmCV-5 responses in both age groups were non-inferior to MenACWY-TT responses for all five serogroups. Six serious adverse events were recorded but none were deemed related to vaccination. When compared with a licensed, quadrivalent meningococcal conjugate vaccine, and given alongside other routine vaccines, a single dose of NmCV-5 was safe and elicited a non-inferior immune response in infants aged 9 months and young children aged 15 months. US National Institutes of Health, UK Foreign, Commonwealth & Development Office, and Serum Institute of India.
Social Network Factors as Correlates and Predictors of High Depressive Symptoms Among Black Men Who Have Sex with Men in HPTN 061
Depression is linked to a range of poor HIV-related health outcomes. Minorities and men who have sex with men (MSM), suffer from high rates of depression. The current study examined the relationship between depressive symptoms and social network characteristics among community-recruited Black MSM in HPTN 061 from 6 US cities. A social network inventory was administer at baseline and depression was assessed with the CES-D at baseline, 6, and 12-months. At baseline, which included 1167 HIV negative and 348 HIV positive participants, size of emotional, financial, and medical support networks were significantly associated with fewer depressive symptoms. In longitudinal mixed models, size of emotional, financial, and medical support networks were significantly associated with fewer depressive symptoms as was the number of network members seen weekly. In the multivariate analyses, size of medical appointment network remained statistically significant (aOR 0.89, CI 0.81–0.98). These findings highlight the importance of network support of medical care on depression and suggest the value of support mobilization.
Population‐level impact of expanding PrEP coverage by offering long‐acting injectable PrEP to MSM in three high‐resource settings: a model comparison analysis
Introduction Long‐acting injectable cabotegravir (CAB‐LA) demonstrated superiority to daily tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) for HIV pre‐exposure prophylaxis (PrEP) in the HPTN 083/084 trials. We compared the potential impact of expanding PrEP coverage by offering CAB‐LA to men who have sex with men (MSM) in Atlanta (US), Montreal (Canada) and the Netherlands, settings with different HIV epidemics. Methods Three risk‐stratified HIV transmission models were independently parameterized and calibrated to local data. In Atlanta, Montreal and the Netherlands, the models, respectively, estimated mean TDF/FTC coverage starting at 29%, 7% and 4% in 2022, and projected HIV incidence per 100 person‐years (PY), respectively, decreasing from 2.06 to 1.62, 0.08 to 0.03 and 0.07 to 0.001 by 2042. Expansion of PrEP coverage was simulated by recruiting new CAB‐LA users and by switching different proportions of TDF/FTC users to CAB‐LA. Population effectiveness and efficiency of PrEP expansions were evaluated over 20 years in comparison to baseline scenarios with TDF/FTC only. Results Increasing PrEP coverage by 11 percentage points (pp) from 29% to 40% by 2032 was expected to avert a median 36% of new HIV acquisitions in Atlanta. Substantially larger increases (by 33 or 26 pp) in PrEP coverage (to 40% or 30%) were needed to achieve comparable reductions in Montreal and the Netherlands, respectively. A median 17 additional PYs on PrEP were needed to prevent one acquisition in Atlanta with 40% PrEP coverage, compared to 1000+ in Montreal and 4000+ in the Netherlands. Reaching 50% PrEP coverage by 2032 by recruiting CAB‐LA users among PrEP‐eligible MSM could avert >45% of new HIV acquisitions in all settings. Achieving targeted coverage 5 years earlier increased the impact by 5–10 pp. In the Atlanta model, PrEP expansions achieving 40% and 50% coverage reduced differences in PrEP access between PrEP‐indicated White and Black MSM from 23 to 9 pp and 4 pp, respectively. Conclusions Achieving high PrEP coverage by offering CAB‐LA can impact the HIV epidemic substantially if rolled out without delays. These PrEP expansions may be efficient in settings with high HIV incidence (like Atlanta) but not in settings with low HIV incidence (like Montreal and the Netherlands).
Delivering integrated strategies from a mobile unit to address the intertwining epidemics of HIV and addiction in people who inject drugs: the HPTN 094 randomized controlled trial protocol (the INTEGRA Study)
Background Persons with opioid use disorders who inject drugs (PWID) in the United States (US) face multiple and intertwining health risks. These include interference with consistent access, linkage, and retention to health care including medication for opioid use disorder (MOUD), HIV prevention using pre-exposure prophylaxis (PrEP), and testing and treatment for sexually transmitted infections (STIs). Most services, when available, including those that address substance misuse, HIV prevention, and STIs, are often provided in multiple locations that may be difficult to access, which further challenges sustained health for PWID. HPTN 094 (INTEGRA) is a study designed to test the efficacy of an integrated, “whole-person” strategy that provides integrated HIV prevention including antiretroviral therapy (ART), PrEP, MOUD, and STI testing and treatment from a mobile health delivery unit (“mobile unit”) with peer navigation compared to peer navigation alone to access these services at brick and mortar locations. Methods HPTN 094 (INTEGRA) is a two-arm, randomized controlled trial in 5 US cities where approximately 400 PWID without HIV are assigned either to an experimental condition that delivers 26 weeks of “one-stop” integrated health services combined with peer navigation and delivered in a mobile unit or to an active control condition using peer navigation only for 26 weeks to the same set of services delivered in community settings. The primary outcomes include being alive and retained in MOUD and PrEP at 26 weeks post-randomization. Secondary outcomes measure the durability of intervention effects at 52 weeks following randomization. Discussion This trial responds to a need for evidence on using a “whole-person” strategy for delivering integrated HIV prevention and substance use treatment, while testing the use of a mobile unit that meets out-of-treatment PWID wherever they might be and links them to care systems and/or harm reduction services. Findings will be important in guiding policy for engaging PWID in HIV prevention or care, substance use treatment, and STI testing and treatment by addressing the intertwined epidemics of addiction and HIV among those who have many physical and geographic barriers to access care. Trial registration ClinicalTrials.gov NCT04804072 . Registered on 18 March 2021.
Evaluation of long‐acting cabotegravir safety and pharmacokinetics in pregnant women in eastern and southern Africa: a secondary analysis of HPTN 084
Introduction Long‐acting injectable cabotegravir (CAB‐LA) for pre‐exposure prophylaxis significantly reduced HIV acquisition in HPTN 084. We report on the safety and CAB‐LA pharmacokinetics in pregnant women during the blinded period of HPTN 084. Methods Participants were randomized 1:1 to either active cabotegravir (CAB) plus tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) placebo or active TDF/FTC plus CAB placebo. Pregnancy testing was performed at each visit; participants with a positive test had study product withheld and were offered open‐label TDF/FTC. Pregnancies were confirmed on two tests at least 4 weeks apart. All participants with a positive pregnancy test prior to November 5, 2020 are included in this analysis. Pregnancy incidence, maternal adverse event (AE) incidence, pregnancy outcomes (including composite outcome of spontaneous abortion <20 weeks, intrauterine foetal death or stillbirth ≥20 weeks, premature birth <37 weeks, or small for gestational age) were assessed. The apparent terminal phase half‐life (t1/2app) of CAB‐LA in pregnant women in HPTN 084 was compared to non‐pregnant women from the phase 2a HPTN 077 trial. Multivariable models assessed associations with t1/2app. Results Fifty‐seven pregnancies (30 CAB‐LA, 27 TDF/FTC) were confirmed over 3845 person‐years [py] (incidence 1.5/100 py, 95% CI 1.1−1.9). CAB‐LA group participants had a median 342 days (IQR 192, 497) of CAB‐LA exposure prior to pregnancy detection. Grade 2 or higher maternal AE incidence did not differ by study arm (CAB 157, 95% CI 91−271 per 100 py vs. TDF/FTC 217, 95% CI 124–380 per 100 py; p = 0.256). Most pregnancies (81%) resulted in live births (25 CAB‐LA, 22 TDF/FTC). Composite poor pregnancy outcomes did not differ significantly by group (CAB 6/30 vs. TDF/FTC 4/27; p = 0.476). No congenital anomalies were observed. The CAB t1/2app geometric mean was 52.8 days (95% CI 40.7−68.4) in pregnant women compared to 60.3 days (95% CI 47.7−76.3; p = 0.66) in non‐pregnant women; neither pregnancy nor body mass index were significantly associated with t1/2app. Conclusions CAB‐LA concentrations post‐cessation of injections were generally well tolerated in pregnant women. The t1/2app was comparable between pregnant and non‐pregnant women. Ongoing studies will examine the safety and pharmacology of CAB‐LA in women who choose to continue CAB‐LA through pregnancy and lactation.
Estimated impact of long‐acting injectable PrEP in South Africa: a model comparison analysis
Introduction Long‐acting injectable cabotegravir (CAB‐LA) demonstrated superiority to daily tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) for human immunodeficiency virus (HIV) pre‐exposure prophylaxis (PrEP) in two clinical trials. This analysis projects the impact of expanding PrEP coverage with CAB‐LA in South Africa between 2022 and 2042. Methods Three independently calibrated models of HIV transmission in South Africa (Synthesis, EMOD‐HIV, Thembisa) projected HIV acquisitions and effective coverage (average PrEP coverage across exposure groups, weighted by HIV incidence in the absence of PrEP in each group) over 20 years under multiple scenarios of PrEP expansion compared to no PrEP expansion. PrEP expansion scenarios differed in targeted overall coverage, speed of expansion, coverage of high‐exposure groups, and relative coverage of women and men. Results Achieving 5% PrEP coverage with CAB‐LA by 2032 prioritizing high‐exposure groups resulted in 49% (Synthesis), 18% (EMOD‐HIV), and 8% (Thembisa) effective coverage and averted a median of 43%, 29% and 10% of new HIV acquisitions, respectively. Similar expansion with TDF/FTC resulted in lower impact by 19 percentage points (pp), 18pp and 3pp, respectively. Increasing CAB‐LA coverage to 15% led to an additional 7pp, 12pp and 16pp, respectively, of HIV acquisitions averted. Achieving 5% CAB‐LA coverage expanding to women only resulted in a lower impact by 16pp (Synthesis) and 13pp (EMOD‐HIV), and a higher impact by 2pp (Thembisa). Scenarios with similar effective coverage resulted in comparable impact estimates across models. Conclusions Offering CAB‐LA in South Africa may substantially impact the HIV epidemic based on these projections. Effective coverage proved to be a good predictor of intervention effectiveness.
Counterfactual estimation of efficacy against placebo for novel PrEP agents using external trial data: example of injectable cabotegravir and oral PrEP in women
Introduction Multiple antiretroviral agents have demonstrated efficacy for human immunodeficiency virus (HIV) pre‐exposure prophylaxis (PrEP). As a result, clinical trials of novel agents have transitioned from placebo‐ to active‐controlled designs; however, active‐controlled trials do not provide an estimate of efficacy versus no use of PrEP. Counterfactual placebo comparisons using other data sources could be employed to provide this information. Methods We compared the active‐controlled study (HPTN 084) of injectable cabotegravir (CAB‐LA) versus daily oral emtricitabine/tenofovir disoproxil fumarate (FTC/TDF) among women from seven countries in Africa to three external, contemporaneous randomized HIV prevention trials from which we constructed counterfactual placebo estimates. We used direct standardization via analysis weights to achieve the same distribution of person‐years between the external study and HPTN 084, across strata predictive of HIV risk (country and selected risk covariates). We estimated prevention efficacy against a counterfactual placebo to provide information on the use of CAB‐LA and FTC/TDF compared to no intervention. We compared the counterfactual placebo findings for FTC/TDF to previous placebo‐controlled trials, adjusted for observed adherence to daily pills. Results Distribution of age and baseline prevalence of gonorrhoea and chlamydia were similar among matched counterfactual placebo and observed HPTN 084 arms after standardization. Counterfactual estimates of CAB‐LA versus placebo in all three settings showed a consistent risk reduction of 93%–94%, with lower bounds of the confidence intervals above 72%. Observed adherence (quantifiable tenofovir in plasma) in HPTN 084 was 54%–56%, and estimated efficacy of daily oral FTC/TDF against a counterfactual placebo was consistent with a predicted risk reduction of 39%–40% for this level of daily pill use. Conclusions Counterfactual placebo rates of HIV acquisition derived from external trial data in similar locations and time can be used to support estimates of placebo‐based efficacy of a novel HIV prevention agent. External trial data must be standardized to be representative of the clinical trial cohort testing the novel HIV prevention agent, accounting for confounders.
Causes and risk factors of death among people who inject drugs in Indonesia, Ukraine and Vietnam: findings from HPTN 074 randomized trial
Introduction The HIV Prevention Trials Network (HPTN) 074 study demonstrated a positive effect of an integrated systems navigation and psychosocial counseling intervention on HIV treatment initiation, viral suppression, medication assisted treatment (MAT) enrollment, and risk of death among people who inject drugs (PWID). In this sub-study, we analyzed the incidence, causes, and predictors of death among HIV-infected and uninfected participants. Methods The HPTN 074 randomized clinical trial was conducted in Indonesia, Ukraine, and Vietnam. HIV-infected PWID with unsuppressed viral load (indexes) were recruited together with at least one of their HIV-negative injection partners. Indexes were randomized in a 1:3 ratio to the intervention or standard of care. Results The trial enrolled 502 index and 806 partner participants. Overall, 13% (66/502) of indexes and 3% (19/806) of partners died during follow-up (crude mortality rates 10.4 [95% CI 8.1–13.3] and 2.1 [1.3–3.3], respectively). These mortality rates were for indexes nearly 30 times and for partners 6 times higher than expected in a population of the same country, age, and gender (standardized mortality ratios 30.7 [23.7–39.0] and 5.8 [3.5–9.1], respectively). HIV-related causes, including a recent CD4 < 200 cells/μL, accounted for 50% of deaths among indexes. Among partners, medical conditions were the most common cause of death (47%). In the multivariable Cox model, the mortality among indexes was associated with sex (male versus female aHR = 4.2 [1.5–17.9]), CD4 count (≥ 200 versus < 200 cells/μL aHR = 0.3 [0.2–0.5]), depression (moderate-to-severe versus no/mild aHR = 2.6 [1.2–5.0]) and study arm (intervention versus control aHR = 0.4 [0.2–0.9]). Among partners, the study arm of the index remained the only significant predictor (intervention versus control aHR = 0.2 [0.0–0.9]) while controlling for the effect of MAT (never versus ever receiving MAT aHR = 2.4 [0.9–7.4]). Conclusions The results confirm that both HIV-infected and uninfected PWID remain at a starkly elevated risk of death compared to general population. Mortality related to HIV and other causes can be significantly reduced by scaling-up ART and MAT. Access to these life-saving treatments can be effectively improved by flexible integrated interventions, such as the one developed and tested in HPTN 074.