Search

Background: Little is known about the potential benefits or harms of statins on physical function among people with HIV (PWH)., Methods: REPRIEVE was a double-blind randomized controlled trial evaluating pitavastatin for primary prevention of major adverse cardiovascular events (MACE) in PWH. Time to complete ten chair rises, 4-meter gait speed, grip strength, and a modified short physical performance test were assessed annually for up to 5 years in the ancillary study PREPARE and analyzed using linear mixed models., Findings: Of 602 PWH, 52% were randomized to pitavastatin and 48% to placebo. Median age was 51 years; 18% were female at birth; 2% transgender; 40% Black, and 18% Hispanic. Median PREPARE follow-up was 4.7 (4.3, 5.0) years. Muscle symptoms (grade ≥3 or treatment-limiting) occurred in 5% of both groups. There was no evidence of decline in chair rise rate in either treatment group, and no difference in the pitavastatin group compared to placebo (estimated difference -0.10 [95% CI: -0.30, 0.10] rises/min/year; p=0.31). Small declines over time were observed in other physical function tests in both treatment groups, with no apparent differences between groups., Interpretation: We observed minimal declines in physical function over 5 years of follow-up among middle-aged PWH, with no differences among PWH randomized to pitavastatin compared to placebo. This finding, combined with low prevalence of myalgias, supports the long-term safety of statin therapy on physical function, when used for primary prevention of MACE among PWH., (© The Author(s) 2024. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)

Background: Pericoronary adipose tissue (PCAT) may influence plaque development through inflammatory mechanisms. We assessed PCAT density, as a measure of pericoronary inflammation, in relationship to coronary plaque among people with human immunodeficiency virus (HIV [PWH]) and to a matched control population., Methods: In this baseline analysis of 727 participants of the Randomized Trial to Prevent Vascular Events in HIV (REPRIEVE) Mechanistic Substudy, we related computed tomography-derived PCAT density to presence and extent (Leaman score) of coronary artery disease (CAD), noncalcified plaque, coronary artery calcium (CAC), and vulnerable plaque features using multivariable logistic regression analyses. We further compared the PCAT density between PWH and age, sex, body mass index, CAC score, and statin use-matched controls from the community-based Framingham Heart Study (N = 464), adjusting for relevant clinical covariates., Results: Among 727 REPRIEVE participants (age 50.8 ± 5.8 years; 83.6% [608/727] male), PCAT density was higher in those with (vs without) coronary plaque, noncalcified plaque, CAC >0, vulnerable plaque, and high CAD burden (Leaman score >5) (P < .001 for each comparison). PCAT density related to prevalent coronary plaque (adjusted odds ratio [per 10 HU]: 1.44; 95% confidence interval, 1.22-1.70; P < .001), adjusted for clinical cardiovascular risk factors, body mass index, and systemic immune/inflammatory biomarkers. Similarly, PCAT density related to CAC >0, noncalcified plaque, vulnerable plaque, and Leaman score >5 (all P ≤ .002). PCAT density was greater among REPRIEVE participants versus Framingham Heart Study (-88.2 ± 0.5 HU versus -90.6 ± 0.4 HU; P < .001)., Conclusions: Among PWH in REPRIEVE, a large primary cardiovascular disease prevention cohort, increased PCAT density independently associated with prevalence and severity of coronary plaque, linking increased coronary inflammation to CAD in PWH., Competing Interests: Potential conflicts of interest. B. F. reports institutional research support from AstraZeneca, MedImmune, and MedTrace, all outside of the submitted work. M. V. Z. reports grant support through her institution from NIH/NIAID and Gilead Sciences, Inc., relevant to the conduct of the study, as well as grants from NIH/NIAID and NIH/NHLBI (RO1AI123001 PI, R01 HL137562 PI, R01HL146267 PI, K24AI157882 PI, U01HL123336 Co-I, U01HL123336-06S2 Co-I, R01HL151283 Co-I) outside the submitted work; travel support from conference organizing committees for CROI and International Workshop for HIV and Women; and unpaid participation in DSMB for NIH-funded studies. A. L. reports institutional research support from NIH/NIA, outside of the submitted work. T. H. B. reports equity in Excision Bio Therapeutics and serves on its Scientific Advisory Board, outside the submitted work. G. S. B. reports research grants (R01HL157531, U01HL146382, R56HL152803, R01MD013493) and royalties from UpToDate.com. C. D. M. reports institutional research support by Lilly and personal fees from ViiV Healthcare, Pfizer, and Gilead Sciences for participation in advisory board meetings outside the submitted work. C. J. F. reports grant support through his institution from Gilead Sciences, ViiV Healthcare, GSK, Janssen, Abbvie, Merck, Amgen, and Cytodyn, outside the submitted work; and personal fees from Theratechnologies and ViiV for consulting and participation on Advisory Board unrelated to REPRIEVE with Theratechnologies and ViiV, and role as Chair on DSMB for Intrepid Study, outside the submitted work. J. A. A. reports institutional research support for clinical trials from Atea, Emergent Biosolutions, Frontier Technologies, Gilead Sciences, Glaxo Smith Kline, Janssen, Merck, Pfizer, Regeneron, and ViiV Healthcare and personal fees for data safety monitoring or advisory boards from Kintor Pharmaceuticals, Glaxo Smith Kline, and Merck; all outside the submitted work. J. S. C. reports consulting fees from Merck and Company. H. J. R. reports grants from NIH/NHLBI and Kowa Pharmaceuticals during the conduct of the study as well as grants from NIH/NIAID, and NIH/NHLBI, NIH/NIDDK, and NIH/NIA outside the submitted work. U. H. reports institutional research support from Kowa, AstraZeneca, MedImmune, and HeartFlow; consulting fees from Recor Medical, Stanford University, Clinical Cardiovascular Sciences, MedTrace Inc., and Rapid AI; stock or stock options in Cleerly Inc. as Chief Scientific Officer; and personal fees from Duke University, all outside of the submitted work. M. T. L. reports grant support through his institution from NIH/NHLIBI and Kowa Pharmaceuticals America, Inc., for the conduct of the study; institutional grant support from MedImmune, CRICO, Ionis, Johnson & Johnson Innovation, National Academy of Medicine, and Astrazeneca; and personal fees from PQBypass, outside of the current work. P. S. D. reports consulting fees from Foresite Labs; receipt of equipment or drugs from Kowa and Caption Health; and an institutional grant for HeartFlow (outside of the current work). S. K. G. reports grants from NIH, KOWA Pharmaceuticals, Gilead Sciences, and ViiV Healthcare during the conduct of the study as well as personal consulting fees from TheraTechnologies, Navidea, and ViiV Healthcare, and Marathon Asset Management outside the submitted work. All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed., (© The Author(s) 2023. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Over 2-years of follow-up, integrase strand transfer inhibitor (INSTI)-use was associated with weight gain among those on an INSTI <2 years at entry (+0.27 kg/m2/year; 95% confidence interval [CI], .22 to .33 vs +0.17 kg/m2/year; 95% CI, .12 to .23; P = .01), but not those on an entry INSTI >2 years., Competing Interests: Potential conflicts of interest. C. D. M. reports institutional research grants from Lilly and personal fees from ViiV Healthcare and Gilead Sciences for participation in advisory board meetings outside the submitted work. J. L. reports consulting fees from ViiV Healthcare and Gilead Sciences, Inc, as well as investigator-initiated research grant support from ViiV Healthcare related to this work. C. J. F. reports grant support through their institution from Gilead Sciences, ViiV Healthcare, GSK, Janssen, AbbVie, Merck, Amgen, and Cytodyn, outside the submitted work; personal fees from Theratechnologies and ViiV Healthcare for consulting and participation on an advisory board unrelated to Randomized Trial to Prevent Vascular Events in HIV (REPRIEVE); and a role as chair on the data and safety monitoring board (DSMB) for the Intrepid Study, outside the submitted work. J. A. A. reports institutional research support for clinical trials from Atea, Emergent Biosolutions, Frontier Technologies, Gilead Sciences, GSK, Janssen, Merck, Pfizer, Regeneron, and ViiV Healthcare; personal fees for participation on advisory boards from GSK/ViiV Healthcare and Merck; and participation on a DSMB from Kintor, all outside the submitted work. M. V. Z. reports grant support through their institution from NIH/NIAID and Gilead Sciences, Inc, relevant to the conduct of the study, as well as grants from NIH/NIAID and NIH/NHLBI, outside the submitted work; unpaid participation on a DSMB for NIH-funded studies; and support for meetings and/or travel from Conference on Retroviruses and Opportunistic Infections (CROI) and the International Workshop for HIV and Women from the conference organizing committee as an abstract reviewer and/or speaker. E. M. reports consulting fees and honoraria for lectures from Gilead Sciences, ViiV Healthcare, Janssen, and MSD; advisory board participation for ViiV Healthcare and MSD; and that their institution has received research grants from Gilead, Janssen, MSD, Theratechnologies, and ViiV Healthcare, unrelated to the submitted work. N. L. O. reports grants from NIH/NHLBI during the conduct of the study and consulting fees from Gilead Sciences unrelated to the submitted work. P. K. serves as a consultant and receives research funding from ViiV Healthcare, Merck, Theratechnologies, and Gilead and owns stock in Pfizer, Gilead, Merck, GSK, and Moderna. S. H. B. reports serving as a scientific advisor to Gilead Sciences including payment for expert testimony and research grants to their institution from Gilead Sciences, ViiV Healthcare, and Janssen unrelated to the submitted work. J. C. R. reports work supported by NIAID of the NIH. H. J. R. reports grants from NIH/NHLBI and Kowa Pharmaceuticals America, Inc, during the conduct of the study as well as grants from NIH/NIAID, NIH/NHLBI, NIH/National Institute of Diabetes and Digestive and Kidney Diseases, and NIH/National Institute on Aging outside the submitted work. S. K. G. reports grants from NIH, Kowa Pharmaceuticals America, Inc, Gilead Sciences, and ViiV Healthcare during the conduct of the study; personal consulting fees from Theratechnologies, ViiV Healthcare, and Marathon Asset Management outside the submitted work; and participation on the Marathon Asset Management Scientific Advisory Board. All remaining authors: No reported conflicts of interest. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed., (© The Author(s) 2023. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Background: Cytomegalovirus (CMV) infection is thought to result in increased immune activation in people with human immunodeficiency virus (HIV, PWH). Although some data have linked asymptomatic CMV infection to cardiovascular disease among PWH, it remains unknown whether CMV is associated with increased or high-risk coronary plaque., Methods: The Randomized Trial to Prevent Vascular Events in HIV (REPRIEVE) enrolled PWH aged 40-75 years on stable antiretroviral therapy (ART) with low-to-moderate atherosclerotic cardiovascular disease (ASCVD) risk. Among a subset of US REPRIEVE participants, coronary plaque was assessed by coronary computed tomography angiography. Here, we assessed the relationship between CMV immunoglobulin G (IgG) titer and (1) levels of immune activation, (2) inflammatory biomarkers, and (3) coronary plaque phenotypes at study entry., Results: Of 672 participants, mean age was 51 years, 83% were men, median ASCVD risk score was 4.5%, and 66% had current CD4+ T-cell count ≥500 cells/mm3. Higher CMV IgG quartile group was associated with older age and lower current and nadir CD4+ T-cell counts. CMV IgG titer was associated with specific inflammatory biomarkers (sCD163, MCP-1, interleukin [IL]-6, hsCRP) in univariate analysis, but not after controlling for HIV-specific factors. In contrast, CMV IgG titer was not associated with coronary artery disease indexes, including presence of plaque, coronary artery calcium (CAC) score >0, vulnerable plaque presence, or Leaman score >5., Conclusions: No meaningful association was seen between CMV IgG titer and coronary artery disease indexes among ART-treated PWH at study enrollment. Longitudinal assessments in REPRIEVE will determine the relationship of CMV IgG titer to plaque progression and cardiovascular events., Clinical Trials Registration: NCT02344290., Competing Interests: Potential conflicts of interest. The views expressed in this article are those of the authors and do not necessarily represent the views of the NHLBI, the NIAID, the NIH, or the US Department of Health and Human Services. S. R. S. reports grant support through his institution from NIH/NIAID. M. T. L. reports grant support through his institution from Kowa Pharmaceuticals America, Inc, for the conduct of the study. He also reports grant support from MedImmune/Astrazeneca and personal fees from PQBypass outside of the current work. T. H. B. reports equity in Excision BioTherapeutics and serves on their Scientific Advisory Board, outside the submitted work. M. V. Z. reports grant support through her institution from NIH/NIAID and Gilead Sciences, Inc, relevant to the conduct of the study, as well as grants from NIH/NIAID and NIH/NHLBI outside the submitted work: RO1AI123001 PI, U01HL123336 Co-I, R01 HL137562 PI, U01HL123336-06S2 Co-I, R01HL146267 PI, R01HL151283 Co-I, K24AI157882 PI. M. V. Z. also reports support for attending meetings and/or travel from CROI and International Workshop for HIV and Women from conference organizing committee when abstract reviewer and/or speaker; unpaid participation on DSMB for NIH funded studies. B. F. reports unrelated grant support paid to institution from NIH/NHLBI, MedImmune/Astrazeneca, and MedTrace. C. M. reports grants to institution from Gilead Sciences, unrelated to this work, participation on Advisory Boards for ViiV Healthcare and Gilead Sciences, and no other disclosures. C. J. F. reports grant support through his institution from Gilead Sciences, ViiV Healthcare, GSK, Janssen, Abbvie, Merck, Amgen, and Cytodyn, outside the submitted work, and participation as Chair of DSMB for Intrepid Study. J. A. A. reports institutional research support for clinical trials from Atea, Emergent Biosolutions, Frontier Technologies, Gilead Sciences, Glaxo Smith Kline, Janssen, Merck, Pfizer, Regeneron, and ViiV Healthcare and personal fees for advisory boards from Glaxo Smith Kline/ViiV and Merck, and participation on a DSMB for Kintor; all outside the submitted work. E. T. O. reports grant support through his institution from NIH, Gilead, ViiV, and GSK, personal fees from Merck, ViiV Healthcare, and Theratechnologies, outside the submitted work, and roles as chair of Comorbidity Transformational Science Group for NIH-funded ACTG and as member of Scientific Review Committee for NIH-funded HVTN. J. C. reports consulting fees from Merck and Company (11/2021) and Resvirlogix. B. E. S. reports grant support through her institution from ViiV Healthcare and Gilead (Focus grant) outside the submitted work. H. J. R. reports grants from NIH/NIAID and NIH/NHLBI during the conduct of the study, as well as grants from NIH/NIAID, NIH/NHLBI, NIH/NIDDK, and NIH/NIA, outside the submitted work. K. M. E. reports grant support from Gilead Sciences, Inc., and consulting fees from Gilead Sciences, Inc, ViiV Pharmaceuticals America, Inc., and Janssen Therapeutics (all paid to the University of Colorado), and participation on DSMB for NIH study (paid to institution), outside the submitted work. S. K. G. reports grant support through his institution from Kowa Pharmaceuticals America, Inc, Gilead Sciences, Inc, and ViiV Healthcare for the conduct of the study, as well as grants from Theratechnologies and Navidea and personal fees from Theratechnologies Consulting and ViiV Consulting and Navidea, all outside the submitted work. All other authors report no potential conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Conflicts that the editors consider relevant to the content of the manuscript have been disclosed., (© The Author(s) 2022. Published by Oxford University Press on behalf of Infectious Diseases Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Background: Among people with HIV (PWH), sex differences in presentations of atherosclerotic cardiovascular disease (ASCVD) may be influenced by differences in coronary plaque parameters, immune/inflammatory biomarkers, or relationships therein., Methods: REPRIEVE, a primary ASCVD prevention trial, enrolled antiretroviral therapy (ART)-treated PWH. At entry, a subset of US participants underwent coronary computed tomography angiography (CTA) and immune phenotyping (n = 755 CTA; n = 725 CTA + immune). We characterized sex differences in coronary plaque and immune/inflammatory biomarkers and compared immune-plaque relationships by sex. Unless noted otherwise, analyses adjust for ASCVD risk score., Results: The primary analysis cohort included 631 males and 124 females. ASCVD risk was higher among males (median: 4.9% vs 2.1%), while obesity rates were higher among females (48% vs 21%). Prevalence of any plaque and of plaque with either ≥1 visible noncalcified portion or vulnerable features (NC/V-P) was lower among females overall and controlling for relevant risk factors (RR [95% CI] for any plaque: .67 [.50, .92]; RR for NC/V-P: .71 [.51, 1.00] [adjusted for ASCVD risk score and body mass index]). Females showed higher levels of IL-6, hs-CRP, and D-dimer and lower levels of Lp-PLA2 (P < .001 for all). Higher levels of Lp-PLA2, MCP-1, and oxLDL were associated with higher plaque (P < .02) and NC/V-P prevalence, with no differences by sex. Among females but not males, D-dimer was associated with higher prevalence of NC/V-P (interaction P = .055)., Conclusions: Among US PWH, females had a lower prevalence of plaque and NC/V-P, as well as differences in key immune/inflammatory biomarkers. Immune-plaque relationships differed by sex for D-dimer but not other tested parameters. Clinical Trial Registration. ClinicalTrials.gov; identifier: NCT0234429 (date of initial registration: 22 January 2015)., (© The Author(s) 2022. Published by Oxford University Press on behalf of Infectious Diseases Society of America.)

Background: Among antiretroviral therapy (ART)-treated people with human immunodeficiency virus (PWH), persistent systemic immune activation contributes to atherogenesis atherosclerotic, cardiovascular disease (CVD) events, and mortality. Factors associated with key immune activation indices have not previously been characterized among a global primary CVD prevention cohort of PWH., Methods: Leveraging baseline Randomized Trial to Prevent Vascular Events in HIV (REPRIEVE) data, we evaluated factors associated with soluble CD14 (sCD14) and oxidized low-density lipoprotein (oxLDL)., Results: The primary analysis cohort included 4907 participants from 5 global-burden-of-disease regions (38% female, 48% Black, median age 50 years). In fully adjusted models for sCD14, female sex and White race (among those in high-income regions) were associated with higher sCD14 levels, while higher body mass index (BMI) and current use of nucleoside reverse transcriptase inhibitor + integrase strand transfer inhibitor ART were associated with lower sCD14 levels. In fully adjusted models for oxLDL, male sex, residence in high-income regions, White race (among those in high-income regions), and higher BMI were associated with higher oxLDL levels. In a subanalysis cohort of 1396 women with HIV, increased reproductive age was associated with higher sCD14 levels but not with higher oxLDL levels., Conclusions: Factors associated with sCD14 and oxLDL, 2 key indices of immune-mediated CVD risk, differ. Future studies will elucidate ways in which medications (eg, statins) and behavioral modifications influence sCD14 and oxLDL and the extent to which dampening of these markers mediates CVD-protective effects., Clinical Trials Registration: NCT0234429., Competing Interests: Potential conflicts of interest. S. E. L. reports travel reimbursement from the Association of Nurses in AIDS Care as an invited presenter and receipt of a 1-time conference travel reimbursement. A. K. reports grants from NIH/NIAID and NIH/NHLBI during the conduct of the study. T. H. B. reports equity in Excision Bio Therapeutics and serves on their scientific advisory board outside the submitted work. J. S. C. reports consulting fees from Merck and Company and Resvirlogix. C. J. F. reports grant support through his institution from Gilead Sciences, ViiV Healthcare, GlaxoSmithKline, Janssen, AbbVie, Merck, Amgen, and Cytodyn outside the submitted work and serves as chair of the data and safety monitoring board (DSMB) for the Intrepid Study. E. T. O. reports grant support through his institution from NIH, Gilead Sciences, ViiV, and GlaxoSmithKline and personal fees from Merck, ViiV Healthcare, and Theratechnologies outside the submitted work. J. A. A. reports institutional research support for clinical trials from Atea, Emergent Biosolutions, Frontier Technologies, Gilead Sciences, GlaxoSmithKline, Janssen, Merck, Pfizer, Regeneron, and ViiV Healthcare and personal fees for advisory boards from GlaxoSmithKline/ViiV Healthcare and Merck, all outside the submitted work. C. D. M. reports personal fees from Gilead Sciences and ViiV Healthcare for participation in advisory board meetings outside the submitted work. K. M. E. reports grant support from Gilead Sciences and consulting fees from Gilead Sciences, ViiV Healthcare, and Janssen Therapeutics (all paid to the University of Colorado) outside the submitted work. M. C. reports serving as an executive board member for HIV Medicine Association and participation on boards for ViiV Healthcare and Gilead Sciences. M. M. reports personal fees from Merck and Company, Gilead Sciences, and ViiV outside the submitted work. M. T. L. reports grant support through his institution from Kowa Pharmaceuticals America, Inc, for the conduct of the study and reports grant support from MedImmune/AstraZeneca and personal fees from PQBypass outside the current work. S. K. G. reports grant support through his institution from Kowa Pharmaceuticals America, Inc, Gilead Sciences, and ViiV Healthcare for the conduct of the study, as well as grants from Theratechnologies and Navidea and personal fees from Theratechnologies Consulting, Navidea, and ViiV Healthcare Consulting, all outside the submitted work. H. J. R. reports grants from NIH/NIAID and NIH/NHLBI during the conduct of the study, as well as grants from NIH/NIAID, NIH/NHLBI, NIH/National Institute of Diabetes and Digestive and Kidney Diseases, and NIH/National Institute on Aging outside the submitted work. M. V. Z. reports grant support through her institution from NIH/NIAID and Gilead Sciences, relevant to the conduct of the study, as well as grants from NIH/NIAID and NIH/NHLBI outside the submitted work; support for the Conference on Retroviruses and Opportunistic Infections and International Workshop for HIV and Women from the conference organizing committee as an abstract reviewer and/or speaker; and participation in DSMB for NIH-funded studies and received no payment., (© The Author(s) 2022. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Background: In addition to traditional cardiovascular (CV) risk factors, antiretroviral therapy, lifestyle, and human immunodeficiency virus (HIV)-related factors may contribute to future CV events in persons with HIV (PWH)., Methods: Among participants in the global REPRIEVE randomized trial, we characterized demographics and HIV characteristics relative to ACC/AHA pooled cohort equations (PCE) for atherosclerotic CV disease predicted risk and CV health evaluated by Life's Simple 7 (LS7; includes smoking, diet, physical activity, body mass index, blood pressure, total cholesterol, and glucose)., Results: Among 7382 REPRIEVE participants (31% women, 45% Black), the median PCE risk score was 4.5% (lower and upper quartiles Q1, Q3: 2.2, 7.2); 29% had a PCE score <2.5%, and 9% scored above 10%. PCE score was related closely to known CV risk factors and modestly (<1% difference in risk score) to immune function and HIV parameters. The median LS7 score was 9 (Q1, Q3: 7, 10) of a possible 14. Only 24 participants (0.3%) had 7/7 ideal components, and 36% had ≤2 ideal components; 90% had <5 ideal components. The distribution of LS7 did not vary by age or natal sex, although ideal health was more common in low sociodemographic index countries and among Asians. Poor dietary and physical activity patterns on LS7 were seen across all PCE scores, including the lowest risk categories., Conclusions: Poor CV health by LS7 was common among REPRIEVE participants, regardless of PCE. This suggests a critical and independent role for lifestyle interventions in conjunction with conventional treatment to improve CV outcomes in PWH. Clinical Trials Registration: NCT02344290. AIDS Clinical Trials Group study number: A5332., (© The Author(s) 2021. Published by Oxford University Press for the Infectious Diseases Society of America.)

Background: Dipeptidyl peptidase-4 (DPP-4) inhibitors have pleotropic anti-inflammatory and immune regulatory effects in addition to glucoregulation. We evaluated inflammation and immune markers in suppressed human immunodeficiency virus (HIV) infection during treatment with the DPP-4 inhibitor sitagliptin., Methods: Virologically suppressed adults with HIV without diabetes on stable antiretroviral therapy (ART) with ≥100/μL CD4 cells were randomized to 16 weeks of sitagliptin 100 mg/day vs placebo in a multicenter trial. The primary endpoint was the change in plasma soluble CD14 (sCD14) from baseline to week 15-16., Results: Ninety participants were randomized, and 42 from each arm were included in per-protocol analyses. Participants were 45% non-Hispanic white, 38% non-Hispanic black, and 15% Hispanic, with a median age of 51 years; 83% were male; and the median CD4 count was 602 cells/μL. At week 15-16, there was no difference in sCD14 change between the 2 arms (P = .69). Relative to placebo, the sitagliptin arm had 47% greater decline in CXCL10 (95% confidence interval, -57% to -35%) at week 15 (P < .001). There were no significant between-arm differences in other soluble biomarkers, total CD4 and CD8 counts, or markers of lymphocyte or monocyte activation. Sitagliptin was well tolerated., Conclusions: Sixteen weeks of sitagliptin had no effect on sCD14 levels in virologically suppressed participants with HIV. CXCL10, a chemokine involved in atherogenesis that predicts non-AIDS events during ART, declined markedly with sitagliptin. This suggests that DPP-4 inhibition has the potential to reduce cardiovascular morbidity in treated HIV infection., Clinical Trials Registration: NCT01426438., (© The Author(s) 2018. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Background: Chronic inflammation in treated HIV infection is associated with mortality and atherosclerotic cardiovascular disease (ASCVD). We evaluated the safety and potential efficacy of low-dose methotrexate (LDMTX) in treated HIV., Methods: This was a phase 2 randomized, double-blind, multicenter trial in adults ≥40 years old with treated HIV, with CD4+ T-cell count ≥400 cells/μL and with/at increased risk for ASCVD. Participants received LDMTX (5-15 mg/week) or placebo (plus folic acid) for 24 weeks and were followed for an additional 12 weeks. Primary endpoints were safety and brachial artery flow-mediated dilation (FMD)., Results: The 176 participants (90% male) had a median (Q1, Q3) age of 54 (49, 59) years. LDMTX was associated with decreases in CD4+ T cells at week 24 and CD8+ T cells at weeks 8, 12, and 24. Eleven participants (12.8%) experienced safety events in the LDMTX group vs 5 (5.6%) in placebo (Δ = 7.2%, upper 1-sided 90% CI, 13.4%; Pnoninferiority = .037). Week 24 change in FMD was 0.47% with LDMTX and 0.09% with placebo (P = .55). No inflammatory markers changed differentially with LDMTX compared to placebo., Conclusions: Adults with HIV and increased ASCVD risk treated with LDMTX had more safety events than with placebo, but the prespecified noninferiority margin of 15% was not exceeded. LDMTX had no significant effect on endothelial function or inflammatory biomarkers but was associated with a significant decrease in CD8+ T cells. The balance of risks and potential benefits of LDMTX in this population will require additional investigation., Clinical Trials Registration: NCT01949116., (© The Author(s) 2018. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Concentrations of antiretrovirals in hair are associated with virologic outcomes in cohorts of human immunodeficiency virus (HIV)-positive individuals but have never been examined in a clinical trial. We show for the first time the predictive utility of hair antiretroviral concentrations in a large HIV treatment-naive trial (AIDS Clinical Trials Group protocol A5257)., (© The Author(s) 2018. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Background: Fat gain after antiretroviral therapy (ART) occurs, and its association with protease inhibitors (PIs) is unclear., Methods: Peripheral and central fat depots and lean mass were measured using standardized and centrally read abdominal CT scans and whole-body dual-energy absorptiometry scans over a 96-week period in human immunodeficiency virus (HIV)-infected treatment-naive participants. The patients were randomized to tenofovir-emtricitabine (TDF/FTC) plus atazanavir-ritonavir (ATV/r), darunavir-ritonavir (DRV/r), or raltegravir (RAL) in ACTG A5260s, a substudy of A5257. Within arm changes were assessed with signed-rank tests. The 96-week percentage changes in fat and lean mass in the 2 PI arms were not different, thus the PI arms were combined and compared to the RAL arm. Associations between baseline biomarkers and changes in body composition were assessed. All analyses used linear regression models., Results: 328 patients were randomized (90% male, 44% white non-Hispanic). The median age was 36 years, HIV-1 RNA 4.6 log10 copies/mL, and CD4 349 cells/μL. Overall, at week 96, increases in limb fat (13.4%), subcutaneous (19.9%) and visceral abdominal fat (25.8%), trunk fat (18%), and lean mass (1.8%) were apparent (P < .001 for changes within each arm). Changes for all fat and lean outcomes were not different between the PI arms or between the RAL and the combined PI arms. Higher baseline HIV-1 RNA levels were associated with greater gains in peripheral and central fat., Conclusions: In treatment-naive participants initiating ART with TDF/FTC, no differences in lean mass and regional fat were found with RAL when compared with ATV/r or DRV/r over 96 weeks., Clinical Trials Registration: NCT00811954 and NCT00851799., (© The Author 2016. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail journals.permissions@oup.com.)

Background: It is unclear whether the integrase inhibitor raltegravir (RAL) reduces inflammation and immune activation compared with ritonavir-boosted protease inhibitors (PIs)., Methods: In a prospective, randomized, multicenter clinical trial that included 328 human immunodeficiency type 1 (HIV-1)-infected, treatment-naive participants were randomized to receive tenofovir disoproxil fumarate-emtricitabine (TDF/FTC) plus atazanavir/ritonavir (ATV/r), darunavir/ritonavir (DRV/r), or RAL. A total of 234 participants (71%) with HIV-1 RNA levels <50 copies/mL by week 24 were included. Plasma biomarkers of inflammation and coagulation that were analysed included high-sensitivity C-reactive protein, interleukin-6 (IL-6), GlycA, D-dimer, soluble CD14 (sCD14), sCD163, and sIL-2r; blood cellular markers included %CD38+DR+ of T-cell subsets and %CD14+CD16+ and%CD14(dim)CD16+ monocyte subsets. Changes from baseline were examined at earlier (24 or 48 weeks) and later (96 weeks) time points, with 95% confidence intervals on fold-change. Pairwise treatment groups were compared using Wilcoxon rank sum tests, with P values adjusted for false discovery rate control., Results: Changes in biomarkers varied by regimen during the 96 weeks of follow-up as follows: hsCRP declined with ATV/r and RAL, IL-6 declined only with RAL, and GLycA decreased in all groups. D-dimer declined with ATV/r and DRV/r and was unchanged with RAL. Markers of T-cell activation and sCD163 (but not sCD14 and CD14-+CD16+) declined in all groups., Conclusions: Despite some differences in specific markers of inflammation and immune activation between the antiretroviral therapy (ART) regimens, we found no consistent evidence that the reduction of inflammation and immune activation with ART initiation was different between RAL and PI-based regimens., Clinical Trials Registration: NCT00811954 and NCT00851799., (© The Author 2015. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

Background: Metabolic effects following combination antiretroviral therapy (cART) vary by regimen type. Changes in metabolic effects were assessed following cART in the AIDS Clinical Trials Group (ACTG) A5257 study, and correlated with plasma ritonavir trough concentrations (C24)., Methods: Treatment-naive adult subjects were randomized to ritonavir-boosted atazanavir or darunavir, or raltegravir-based cART. Changes in lipids and other metabolic outcomes over time were estimated. Differences between arms were estimated with 97.5% confidence intervals and compared using pairwise Student t tests. Associations between ritonavir C24 and lipid changes at week 48 were evaluated via linear regression., Results: Analyses included 1797 subjects with baseline fasting data. Baseline lipid profiles and metabolic syndrome rates (approximately 21%) were similar across arms. Comparable increases occurred in total cholesterol, triglycerides, and low-density lipoprotein cholesterol with the boosted protease inhibitors (PIs); each PI had greater increases relative to raltegravir (all P ≤ .001 at week 96). Metabolic syndrome incident rates by week 96 (approximately 22%) were not different across arms. Ritonavir C24 was not different by arm (P = .89) (median, 69 ng/mL and 74 ng/mL in the atazanavir and darunavir arms, respectively) and were not associated with changes in lipid measures (all P > .1)., Conclusions: Raltegravir produced the most favorable lipid profile. Metabolic syndrome rates were high at baseline and increased to the same degree in all arms. Ritonavir C24 was not different in the PI arms and had no relationship with the modest but comparable increases in lipids observed with either atazanavir or darunavir. The long-term clinical significance of the lipid changes noted with the PIs relative to raltegravir deserves further evaluation., Clinical Trials Registration: NCT 00811954., (© The Author 2015. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

Background: The AIDS Clinical Trials Group (ACTG) A5230 study evaluated lopinavir/ritonavir (LPV/r) monotherapy following virologic failure (VF) on first-line human immunodeficiency virus (HIV) regimens in Africa and Asia., Methods: Eligible subjects had received first-line regimens for at least 6 months and had plasma HIV-1 RNA levels 1000-200 000 copies/mL. All subjects received LPV/r 400/100 mg twice daily. VF was defined as failure to suppress to <400 copies/mL by week 24, or confirmed rebound to >400 copies/mL at or after week 16 following confirmed suppression. Subjects with VF added emtricitabine 200 mg/tenofovir 300 mg (FTC/TDF) once daily. The probability of continued HIV-1 RNA <400 copies/mL on LPV/r monotherapy through week 104 was estimated with a 95% confidence interval (CI); predictors of treatment success were evaluated with Cox proportional hazards models., Results: One hundred twenty-three subjects were enrolled. Four subjects died and 2 discontinued prematurely; 117 of 123 (95%) completed 104 weeks. Through week 104, 49 subjects met the primary endpoint; 47 had VF, and 2 intensified treatment without VF. Of the 47 subjects with VF, 41 (33%) intensified treatment, and 39 of 41 subsequently achieved levels <400 copies/mL. The probability of continued suppression <400 copies/mL over 104 weeks on LPV/r monotherapy was 60% (95% CI, 50%-68%); 80%-85% maintained levels <400 copies/mL with FTC/TDF intensification as needed. Ultrasensitive assays on specimens with HIV-1 RNA level <400 copies/mL at weeks 24, 48, and 104 revealed that 61%, 62%, and 65% were suppressed to <40 copies/mL, respectively., Conclusions: LPV/r monotherapy after first-line VF with FTC/TDF intensification when needed provides durable suppression of HIV-1 RNA over 104 weeks., Clinical Trials Registration: NCT00357552., (© The Author 2015. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

Background: In the United States, black individuals infected with human immunodeficiency virus (HIV) have higher rates of virologic failure on antiretroviral therapy (ART) and of death compared to white individuals. The cause for these disparities is uncertain. We sought to examine differences in virologic outcomes among antiretroviral-naive clinical trial participants starting randomized ART and to investigate factors to explain the differences., Methods: Individual-level data from participants initiating ART in 5 AIDS Clinical Trials Group studies were analyzed. Included studies were those conducted during 1998-2006 with a primary outcome of virologic failure. The primary outcome measure was time to virologic failure, regardless of ART changes., Results: A total of 2495 individuals (1151 black; 1344 white) were included with a median follow-up of 129 weeks. Compared to whites, blacks had an increased hazard of virologic failure (hazard ratio [HR]; 1.7; 95% confidence interval [CI], 1.4-1.9; P < .001), with no evidence of heterogeneity across regimens (P = .97); the association remained after adjustment for measured confounders (HR, 1.4; 95% CI, 1.2-1.6; P < .001). Increased hazard of virologic failure was associated with younger age, higher pretreatment HIV type 1 RNA level, lower pretreatment CD4 cell count, hepatitis C antibody, less education, and recent nonadherence to treatment. Sensitivity analyses with different endpoint definitions demonstrated similar results., Conclusions: In this analysis, blacks had a 40% higher virologic failure risk than whites that was not explained by measured confounders. The observation was consistent over a range of regimens, suggesting that the difference may be driven by social factors; however, biological factors cannot be ruled out. Further research should identify the sources of racial disparities and develop strategies to reduce them.

Background: Observational and retrospective clinical trial cohorts have reported conflicting results for the association of abacavir use with risk of myocardial infarction (MI), possibly related to issues that may bias estimation of treatment effects, such as time-varying confounders, informative dropout, and cohort loss due to competing events., Methods: We analyzed data from 5056 individuals initiating randomized antiretroviral treatment (ART) in AIDS Clinical Trials Group studies; 1704 started abacavir therapy. An intent-to-treat analysis adjusted for pretreatment covariates and weighting for informative censoring was used to estimate the hazard ratio (HR) of MIs after initiation of a regimen with or without abacavir., Results: Through 6 years after ART initiation, 36 MI events were observed in 17,404 person-years of follow-up. No evidence of an increased hazard of MI in subjects using abacavir versus no abacavir was seen (over a 1-year period: P=.50; HR, 0.7 [95% confidence interval {CI}, 0.2-2.4]); over a 6-year period: P=.24; HR, 0.6 [95% CI, 0.3-1.4]); these results were robust over as-treated and sensitivity analyses. Although the risk of MI decreased over time, there was no evidence to suggest a time-dependent abacavir effect. Classic cardiovascular disease (CVD) risk factors were the strongest predictors of MI., Conclusion: We find no evidence to suggest that initial ART containing abacavir increases MI risk over short-term and long-term periods in this population with relatively low MI risk. Traditional CVD risk factors should be the main focus in assessing CVD risk in individuals with human immunodeficiency virus infection., (© The Author 2011. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved.)

Background: The instantaneous inhibitory potential (IIP), a measure of antiviral activity that incorporates the slope of the dose-response curve, has been proposed as a better predictor of clinical efficacy than the inhibitory quotient (IQ). However, there are no quantitative analyses supporting this hypothesis., Methods: The correlation between differences in log10(IQ) (Deltalog10(IQ)) or differences in IIP (DeltaIIP) and the differences in percentage of subjects with plasma human immunodeficiency virus type 1 (HIV-1) RNA levels <50 copies/mL at week 48 was determined for antiretroviral drugs compared in 17 randomized clinical trials. The Deltalog10(IQmin), Deltalog10(IQmax), DeltaIIPmin, DeltaIIPmax, Deltalog10(IQ12), Deltalog10(IQ24), DeltaIIP12, and DeltaIIP24 for comparative drugs were correlated with differences in percentage of subjects with HIV-1 RNA levels <50 copies/mL in each trial. log10(IQ24), log10(IQ12), IIP24, and IIP12 were calculated using published median effect model slope values and t1/2 values; r2 values from linear regression and Spearman correlation coefficients were calculated for each analysis; and correlation coefficients were compared between log10(IQ) and IIP., Results: r2 values were greatest for the Deltalog10(IQ12) and Deltalog10(IQ24) comparisons using intention-to-treat outcomes from the 17 trials. Differences in r2 values between Deltalog10(IQ24) and DeltaIIP24 and between Deltalog10(IQ12) and DeltaIIP12 were 0.05 and 0.18, respectively. Differences in Spearman rank correlation coefficients between log10(IQ) and IIP at each drug concentration were not significantly different, with the exception of Deltalog10(IQmax) and DeltaIIPmax; the Deltalog10(IQmax) correlation was significantly stronger than the DeltaIIPmax correlation., Conclusions: IIP was not substantially better than log10(IQ) in describing the modest relationship between antiviral activity, pharmacokinetics, and virologic outcomes for antiretroviral drugs.

In AIDS Clinical Trials Group A5095, 9% of participants who experienced an adverse event related to efavirenz substituted nevirapine. Most adverse events resolved; 15 participants ultimately discontinued nevirapine therapy. Grade 3/4 hepatotoxicity was observed in 14% of individuals who substituted nevirapine, compared with 6% who continued efavirenz therapy. Substitution of nevirapine because of efavirenz toxicity was generally safe and efficacious. Clinical trials registration. NCT00013520 .

Background: Efavirenz has a long plasma half-life and a low genetic barrier to resistance. Simultaneously stopping treatment with all agents in efavirenz-containing regimens may result in functional efavirenz monotherapy that selects for drug-resistant human immunodeficiency virus type 1. Lower plasma efavirenz clearance is associated with a cytochrome P450 2B6 gene (CYP2B6) polymorphism (516G-->T) that is more frequent among African American individuals than among European American individuals., Methods: We characterized relationships between this polymorphism and predicted plasma efavirenz concentration-time profiles after discontinuation of therapy with use of data obtained from subjects receiving therapy. Pharmacokinetic parameters were estimated using population-based methods. Concentrations after discontinuation of therapy were predicted from subject-specific estimates. RESULTS. Median estimated efavirenz half-lives were 23, 27, and 48 h for patients with CYP2B6 position 516 GG (78 patients), GT (60), and TT (14) genotypes, respectively (P<.001). After therapy was stopped, plasma efavirenz concentrations in patients with GG, GT, and TT genotypes were predicted to exceed 46.7 ng/mL (the estimated protein-adjusted 95% inhibitory concentration for wild-type virus) for a median of 5.8 days (interquartile range [IQR], 4.4-8.3 days), 7.0 days (IQR, 5.0-8.0 days), and 14 days (IQR, 11.1-21.2 days), respectively (P<.001). Plasma efavirenz levels were predicted to exceed 46.7 ng/mL for >21 days in 5% of subjects with GG genotype, 5% of subjects with GT genotype, and 29% of subjects with TT genotype., Conclusions: The CYP2B6 position 516 TT genotype or a prolonged measured elimination half-life may predict increased risk of developing drug resistance among patients who discontinue efavirenz-containing regimens. This has implications for strategies to safely discontinue antiretroviral regimens while avoiding the emergence of drug resistance.

We evaluated phenotypic and genotypic markers of drug resistance in human immunodeficiency virus type 1 (HIV-1) at the time of virologic failure (VF) in subjects in the AIDS Clinical Trials Group Protocol 388 (ACTG 388) who received lamivudine-zidovudine (or lamivudine-stavudine) and either indinavir, efavirenz-indinavir, or nelfinavir-indinavir. At VF, phenotypically susceptible HIV-1 was found in 55% of subjects in the nelfinavir-indinavir arm, compared with 22% in the indinavir arm (P=.006). Phenotypic resistance to lamivudine was less common in the efavirenz-indinavir arm (33% of subjects; P=.002) and the nelfinavir-indinavir arm (43%; P=.003), compared with the indinavir arm (78%). Isolated phenotypic resistance to efavirenz at VF occurred in HIV-1 recovered from 33% of subjects in the efavirenz-indinavir arm; 24% of the subjects had HIV-1 with both efavirenz and lamivudine resistance. Results of genotypic tests were similar. The lower frequency of resistance in the nelfinavir-indinavir arm likely reflects decreased drug exposure that is due to intolerance, which is consistent with the lower potency and tolerability of this combination in ACTG 388. The lower frequency of lamivudine resistance in the efavirenz-indinavir arm is consistent with reports in other studies of potent regimens. Thus, although dual resistance to efavirenz and lamivudine occurred at VF in the efavirenz-indinavir arm, this risk was relatively low when evaluated in the context of the potency and tolerability of this regimen.