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  • 1
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 75, No. 10 ( 2020-10-01), p. 3004-3014
    Abstract: We compared 48 week effectiveness and safety of first-line antiretroviral regimens. Methods We analysed HIV treatment-naive adults from the Cohort of the Spanish HIV/AIDS Research Network (CoRIS) starting the most commonly used antiretroviral regimens from 2014 to 2018. We used multivariable regression models to assess the impact of initial regimen on: (i) viral suppression (VS) (viral load & lt;50 copies/mL); (ii) change in CD4 cell count; (iii) CD4/CD8 normalization ( & gt;0.4 and & gt;1); (iv) CD4 percentage normalization ( & gt;29%); (v) multiple T-cell marker recovery (MTMR: CD4  & gt; 500 cells/mm3 plus CD4 percentage & gt;29% plus CD4/CD8  & gt; 1); (vi) lipid, creatinine and transaminase changes; and (vii) discontinuations due to adverse events (AE). Results Among 3945 individuals analysed, the most frequently prescribed regimens were ABC/3TC/DTG (34.0%), TAF/FTC/EVG/CBT (17.2%), TDF/FTC + DTG (11.9%), TDF/FTC/EVG/CBT (11.7%), TDF/FTC/RPV (11.5%), TDF/FTC + bDRV (8.3%) and TDF/FTC + RAL (5.3%). At 48 weeks, 89.7% of individuals achieved VS with no significant differences by initial regimen. CD4 mean increase was 257.8 (249.3; 266.2) cells/mm3, and it was lower with TAF/FTC/EVG/CBT and TDF/FTC/RPV compared with ABC/3TC/DTG. CD4 percentage normalization was less likely with TAF/FTC/EVG/CBT, and MTMR was less likely with TAF/FTC/EVG/CBT and TDF/FTC + RAL. The proportion of discontinuations due to AE was higher with TDF/FTC + bDRV (9.7%), followed by TDF/FTC/EVG/CBT (9.5%) and TDF/FTC + DTG (7.9%). Compared with ABC/3TC/DTG, cholesterol and LDL mean increases were higher with TAF/FTC/EVG/CBT and lower with TDF/FTC + DTG, TDF/FTC/RPV and TDF/FTC + RAL. Higher mean increases in triglycerides were significantly associated with TAF/FTC/EVG/CBT. Regimens containing DTG showed higher creatinine increases. Conclusions The significantly greater immunological response and safety of some combinations may be useful for making decisions when initiating treatment.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
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  • 2
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 78, No. 6 ( 2023-06-01), p. 1423-1432
    Abstract: To assess the effectiveness and tolerability of dolutegravir (DTG)/lamivudine (3TC) among treatment-naive and virologically suppressed treatment-experienced individuals in the multicentre cohort of the Spanish HIV/AIDS Research Network (CoRIS) during the years 2018–2021. Methods We used multivariable regression models to compare viral suppression (VS) [HIV RNA viral load (VL) & lt;50 copies/mL] and the change in CD4 cell counts at 24 and 48 (±12) weeks after initiation with dolutegravir/lamivudine or other first-line ART regimens. Results We included 2160 treatment-naive subjects, among whom 401 (18.6%) started with dolutegravir/lamivudine. The remaining subjects started bictegravir (BIC)/emtricitabine (FTC)/tenofovir alafenamide (TAF) (n = 949, 43.9%), DTG + FTC/tenofovir disoproxil fumarate (TDF) (n = 282, 13.1%), DTG/3TC/abacavir (ABC) (n = 255, 11.8%), darunavir (DRV)/cobicistat(COBI)/FTC/TAF (n = 147, 6.8%) and elvitegravir (EVG)/COBI/FTC/TAF (n = 126, 5.8%). At 24 and 48 weeks after starting dolutegravir/lamivudine, 91.4% and 93.8% of the subjects, respectively, achieved VS. The probability of achieving VS with dolutegravir/lamivudine was not significantly different compared with any other regimen at 24 or 48 weeks, with the exception of a lower chance of achieving VS at 24 weeks for DRV/COBI/FTC/TAF (adjusted OR: 0.47; 95% CI: 0.30–0.74) compared with dolutegravir/lamivudine. For the analysis of treatment-experienced virally suppressed subjects we included 1456 individuals who switched to dolutegravir/lamivudine, among whom 97.4% and 95.5% maintained VS at 24 and 48 weeks, respectively. During the first 48 weeks after dolutegravir/lamivudine initiation, 1.0% of treatment-naive and 1.5% of treatment-experienced subjects discontinued dolutegravir/lamivudine due to an adverse event. Conclusions In this large multicentre cohort, effectiveness and tolerability of dolutegravir/lamivudine were high among treatment-naive and treatment-experienced subjects.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 1467478-6
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  • 3
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 75, No. 12 ( 2020-12-01), p. 3517-3524
    Abstract: Transmission of resistance mutations to integrase strand transfer inhibitors (INSTIs) in HIV-infected patients may compromise the efficacy of first-line antiretroviral regimens currently recommended worldwide. Continued surveillance of transmitted drug resistance (TDR) is thus warranted. Objectives We evaluated the rates and effects on virological outcomes of TDR in a 96 week prospective multicentre cohort study of ART-naive HIV-1-infected subjects initiating INSTI-based ART in Spain between April 2015 and December 2016. Methods Pre-ART plasma samples were genotyped for integrase, protease and reverse transcriptase resistance using Sanger population sequencing or MiSeq™ using a ≥ 20% mutant sensitivity cut-off. Those present at 1%–19% of the virus population were considered to be low-frequency variants. Results From a total of 214 available samples, 173 (80.8%), 210 (98.1%) and 214 (100.0%) were successfully amplified for integrase, reverse transcriptase and protease genes, respectively. Using a Sanger-like cut-off, the overall prevalence of any TDR, INSTI-, NRTI-, NNRTI- and protease inhibitor (PI)-associated mutations was 13.1%, 1.7%, 3.8%, 7.1% and 0.9%, respectively. Only three (1.7%) subjects had INSTI TDR (R263K, E138K and G163R), while minority variants with integrase TDR were detected in 9.6% of subjects. There were no virological failures during 96 weeks of follow-up in subjects harbouring TDR as majority variants. Conclusions Transmitted INSTI resistance remains rare in Spain and, to date, is not associated with virological failure to first-line INSTI-based regimens.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1467478-6
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  • 4
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), ( 2019-10-29)
    Abstract: To assess the attitudes and opinions about generic antiretroviral drugs (ARVs) and single-tablet regimen (STR) de-simplification among physicians prescribing HIV treatment in the cohort of the Spanish HIV/AIDS Research Network (CoRIS). Methods An online questionnaire with 27 structured questions was sent to all physicians (n = 199) who prescribed ARVs among the 45 centres participating in the cohort. Results A total of 169 (84.9%) physicians answered the questionnaire. Only 4.1% of the physicians would never prescribe generic ARVs, but 53.3% would not prescribe them if the number of pills per day increased and 89.3% would not prescribe them if the number of doses per day increased. However, 84.0% of the physicians agreed to prescribe generic ARVs if doing so would decrease costs for the public healthcare system. The percentages of physicians stating that generic ARVs (compared with branded ones) would be associated with worse adherence, more adverse effects or more probability of virological failure, provided that the number of pills and doses per day would not change, were low: 0.6%, 7.7% and 3.6%, respectively. However, these percentages were much higher if the generic ARV entailed breaking an STR: 63.9%, 18.9% and 42.0%, respectively. Most physicians stated that they needed more information about the effectiveness and safety of generic ARVs and the price difference compared with their branded equivalents. Conclusions Although most physicians were confident about prescribing generic ARVs, the majority had strong concerns about de-simplifying STR, and they also needed more information about generic drugs.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
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  • 5
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 76, No. 4 ( 2021-03-12), p. 1046-1050
    Abstract: Cobicistat, dolutegravir and rilpivirine are all modest inhibitors of proximal tubular creatinine secretion (IPTCrS) and hence a moderate and early non-progressive creatinine estimated glomerular filtration rate (Cr-eGFR) reduction has been observed in clinical trials. Data regarding the impact of combination of those drugs on Cr-eGFR, in the clinical practice, are scarcely known. Methods Changes in Cr-eGFR after starting darunavir/cobicistat alone or in combination with dolutegravir and/or rilpivirine were studied in a nationwide retrospective cohort study of consecutive HIV-infected patients initiating darunavir/cobicistat. The relationship between Cr-eGFR changes over time and the use of darunavir/cobicistat alone or darunavir/cobicistat plus dolutegravir and/or rilpivirine adjusted by different HIV patient’s characteristics, socio-demographics, HIV severity and use of tenofovir concomitant medication other than antiretrovirals was explored through univariate and multivariate analyses. Results The analysis included 725 patients. At 48 weeks, the combination of two or more IPTCrS (darunavir/cobicistat with rilpivirine and/or dolutegravir) was associated with higher decreases in Cr-eGFR [adjusted median difference (±SD) –3.5 ± 1.6 (95% CI –6.6 to –0.3), P = 0.047], and a decrease up to or higher than 15 mL/min/1.73 m2 was more frequent [adjusted OR 3.233 (95% CI 1.343–7.782), P = 0.009] , with respect to darunavir/cobicistat alone. The Cr-eGFR changes between darunavir/cobicistat and darunavir/cobicistat with rilpivirine and/or dolutegravir showed more significant decreases in patients taking two or more IPTCrS at 12, 24 and 48 weeks. (ClinicalTrials.gov: NCT03042390). Conclusions Concomitant use of darunavir/cobicistat plus IPTCrS dolutegravir, rilpivirine, or both produced an additive effect in the expected Cr-eGFR decrease.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
    detail.hit.zdb_id: 1467478-6
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  • 6
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 75, No. 1 ( 2020-01-01), p. 208-214
    Abstract: Darunavir/cobicistat can be used as mono, dual, triple or more than triple therapy. Objectives To assess factors associated with the number of drugs in darunavir/cobicistat regimens. Methods A nationwide retrospective cohort study of consecutive HIV-infected patients initiating darunavir/cobicistat in Spain from July 2015 to May 2017. Baseline characteristics, efficacy and safety at 48 weeks were compared according to the number of drugs used. Results There were 761 patients (75% men, 98% were antiretroviral-experienced, 32% had prior AIDS, 84% had HIV RNA & lt;50 copies/mL and 88% had ≥200 CD4 cells/mm3) who initiated darunavir/cobicistat as mono (n=308, 40%), dual (n=173, 23%), triple (n=253, 33%) or four-drug (n=27, 4%) therapy. Relative to monotherapy, triple therapy was more common in men aged & lt;50 years, with prior AIDS and darunavir plus ritonavir use, and with CD4 cells & lt;200/mm3 and with detectable viral load at initiation of darunavir/cobicistat; dual therapy was more common with previous intravenous drug use, detectable viral load at initiation of darunavir/cobicistat and no prior darunavir plus ritonavir; and four-drug therapy was more common with prior AIDS and detectable viral load at initiation of darunavir/cobicistat. Monotherapy and dual therapy showed a trend to better virological responses than triple therapy. CD4 responses and adverse effects did not differ among regimens. Discussion Darunavir/cobicistat use in Spain has been tailored according to clinical characteristics of HIV-infected patients. Monotherapy and dual therapy have been common and preferentially addressed to older patients with a better HIV status, suggesting that health issues other than HIV infection may have been strong determinants of its prescription.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2020
    detail.hit.zdb_id: 1467478-6
    SSG: 15,3
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  • 7
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 77, No. 10 ( 2022-09-30), p. 2784-2792
    Abstract: Although integrase inhibitor (INI)-based regimens are now the first-line choice for all people living with HIV, experience among children and adolescents is still scarce. We describe the characteristics and outcomes of a paediatric/adolescent cohort on INI-based ART. Methods Retrospective analysis of HIV-infected patients below 18 years of age who started an INI-based regimen from 2007 to 2019, enrolled in the Spanish National Adult (CoRIS) and Paediatric (CoRISpe) cohorts. Resistance mutations were identified by the Stanford HIV Drug Resistance Database. Results Overall, 318 INI-based regimens were implemented in 288 patients [53.8% female; median age at start of 14.3 years (IQR 12.0–16.3)]. Most were born in Spain (69.1%), vertically infected (87.7%) and treatment-experienced (92.7%). The most frequently prescribed INI was dolutegravir (134; 42.1%), followed by raltegravir (110; 34.6%) and elvitegravir (73; 23.0%). The median exposure was 2.0 years (IQR 1.1–3.0). The main reasons to start an INI-based therapy were treatment simplification (54.4%) and virological failure (34.3%). In total, 103 (32.4%) patients interrupted their regimen: 14.5% for simplification and 8.5% due to virological failure. Most subjects who received dolutegravir (85.8%) and elvitegravir (83.6%) did not interrupt their regimen and maintained undetectable viral load. There were only five virological failures with dolutegravir and three with elvitegravir. There were no interruptions related to adverse events. Seven patients with virological failure presented major resistance mutations to INIs; none of them were on dolutegravir. Conclusions INI-based regimens were effective and safe for HIV treatment in children and adolescents. Dolutegravir and elvitegravir presented an excellent profile, and most patients achieved and maintained viral suppression.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 1467478-6
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  • 8
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 76, No. 7 ( 2021-06-18), p. 1886-1892
    Abstract: We analysed the prevalence of M184V/I and/or K65R/E/N mutations archived in proviral DNA (pDNA) in youths with perinatal HIV, virological control and who previously carried these resistance mutations in historic plasma samples. Methods We included vertically HIV-infected youths/young adults aged ≥10 years in the Madrid Cohort of HIV-1 Infected Children and Adolescents, exposed to lamivudine and/or emtricitabine, with M184V/I and/or K65R/E/N in historic plasma samples, on antiretroviral therapy (ART), virologically suppressed (HIV-1 RNA & lt;50 copies/mL), and with available PBMCs in the Spanish HIV BioBank. Genomic DNA was extracted from PBMCs and HIV-1 RT gene was amplified and sequenced for resistance testing by Stanford HIV Resistance tool. Results Among the 225 patients under follow-up in the study cohort, 13 (5.8%) met selection criteria, and RT sequences were recovered in 12 (92.3%) of them. All but one were Spaniards, carrying subtype B, with a median age at PBMCs sampling of 21.3 years (IQR: 15.6–23.1) with 4 years (IQR 2.1–6.5) of suppressed viral load (VL). Nine (75%) youths did not present M184V/I in pDNA after at least 1 year of viral suppression. In December 2019, the remaining three subjects carrying M184V/I in pDNA maintained suppressed viraemia, and two still used emtricitabine in ART. Conclusions The prevalence of resistance mutations to lamivudine and emtricitabine in pDNA in a cohort of youths perinatally infected with HIV who remain with undetectable VL, previously lamivudine and/or emtricitabine experienced, was infrequent. Our results indicate that ART including lamivudine or emtricitabine may also be safe and successful in youths with perinatal HIV with previous experience of and resistances to these drugs detected in plasma.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
    detail.hit.zdb_id: 1467478-6
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  • 9
    In: Antiviral Therapy, SAGE Publications, Vol. 14, No. 2 ( 2009-02), p. 195-201
    Abstract: Risk factors for loss of virological response in patients receiving lopinavir/ritonavir (LPV/r) monotherapy as maintenance treatment have not been determined. Methods In 121 patients enrolled in the OK and OK04 clinical trials assigned to receive monotherapy with LPV/r, we attempted to identify factors associated with loss of virological suppression at 48 weeks, defined as confirmed serum HIV type-1 RNA 〉 50 copies/ml, with missing data or changes caused by toxicity censored. Univariate and multivariate Cox proportional hazard models were used to calculate hazard ratios for the risk of loss of virological suppression. Results At week 48, 15 patients experienced loss of virological suppression. Probability of loss of virological suppression was 12.7%. Less than 9 months of maintenance of virological suppression prior to monotherapy, a lower baseline haemoglobin and low adherence measured by self-reported total missed doses in the week prior to study visit were associated with loss of virological suppression in the univariate analyses. Independent factors associated with loss of virological suppression by multivariate analyses were ≥2 visits with self-reported missed doses in the week prior to the study visit, a lower baseline haemoglobin and a nadir CD4 + T-cell count 〈 100 cells/μl Conclusions Suboptimal adherence, lower baseline haemoglobin and a nadir CD4 + T-cell count 〈 100 cells/μl were the main risk factors for losing virological suppression in patients randomized to monotherapy with LPV/r.
    Type of Medium: Online Resource
    ISSN: 1359-6535 , 2040-2058
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2009
    detail.hit.zdb_id: 2118396-X
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  • 10
    In: Journal of Antimicrobial Chemotherapy, Oxford University Press (OUP), Vol. 74, No. 10 ( 2019-10-01), p. 3044-3048
    Abstract: Few women have been included in darunavir/cobicistat clinical development studies, and hardly any of them were antiretroviral experienced or treated with anything other than triple-based therapies. Objectives Our aim was to increase our knowledge about women living with HIV undergoing darunavir/cobicistat-based regimens. Methods A multicentre (21 hospitals), retrospective study including a centrally selected random sample of HIV-1 patients starting a darunavir/cobicistat-based regimen from June 2014 to March 2017 was planned. Baseline characteristics, 24 and 48 week viral load response ( 〈 50 copies/mL), CD4+ lymphocyte count increase, time to change darunavir/cobicistat and adverse event occurrence were all compared by sex. The study was approved by each of the 21 ethics committees, and patients signed informed consent. Results Out of 761 participants, 193 were women. Similar characteristics were found for both sexes, except that the women had a longer duration of HIV infection (P = 0.001), and were less frequently pre-treated with darunavir/cobicistat in their previous regimen (P = 0.02). The main reason for using a darunavir/cobicistat-based regimen was simplification, without differences by sex, while monotherapy seems to be more frequently prescribed in women than in men (P = 0.067). The main outcomes, HIV viral load response, CD4+ lymphocyte count increase at 24 or 48 weeks, occurrence of adverse events, main reasons for changing and time to the modify darunavir/cobicistat regimen, did not show differences between the sexes. Conclusions No sex disparities were found in the main study outcomes. These results support the use of a darunavir/cobicistat-based regimen in long-term pre-treated women. Clinical Trial.gov No. NCT03042390.
    Type of Medium: Online Resource
    ISSN: 0305-7453 , 1460-2091
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2019
    detail.hit.zdb_id: 1467478-6
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