TY - JOUR
T1 - Impact of low-level viremia on clinical and virological outcomes in treated HIV-1-infected patients
AU - Vandenhende, Marie-Anne
AU - Ingle, Suzanne
AU - May, Margaret
AU - Chene, Geneviève
AU - Zangerle, Robert
AU - Van Sighem, Ard
AU - Gill, M John
AU - Schwarze-Zander, Carolynne
AU - Hernandez-Novoa, Beatriz
AU - Obel, Niels
AU - Kirk, Ole
AU - Abgrall, Sophie
AU - Guest, Jodie
AU - Samji, Hasina
AU - D'Arminio Monforte, Antonella
AU - Llibre, Josep M
AU - Smith, Colette
AU - Cavassini, Matthias
AU - Burkholder, Greer A
AU - Shepherd, Bryan
AU - Crane, Heidi M
AU - Sterne, Jonathan
AU - Morlat, Philippe
AU - Antiretroviral Therapy Cohort Collaboration (ART-CC)
PY - 2015/1/28
Y1 - 2015/1/28
N2 - BACKGROUND: The goal of antiretroviral therapy (ART) is to reduce HIV-related morbidity and mortality by suppressing HIV replication. The prognostic value of persistent low-level viremia (LLV), particularly for clinical outcomes, is unknown.OBJECTIVE: Assess the association of different levels of LLV with virological failure, AIDS event, and death among HIV-infected patients receiving combination ART.METHODS: We analyzed data from 18 cohorts in Europe and North America, contributing to the ART Cohort Collaboration. Eligible patients achieved viral load below 50 copies/ml within 3-9 months after ART initiation. LLV50-199 was defined as two consecutive viral loads between 50 and 199 copies/ml and LLV200-499 as two consecutive viral loads between 50 and 499 copies/ml, with at least one between 200 and 499 copies/ml. We used Cox models to estimate the association of LLV with virological failure (two consecutive viral loads at least 500 copies/ml or one viral load at least 500 copies/ml, followed by a modification of ART) and AIDS event/death.RESULTS: Among 17 902 patients, 624 (3.5%) experienced LLV50-199 and 482 (2.7%) LLV200-499. Median follow-up was 2.3 and 3.1 years for virological and clinical outcomes, respectively. There were 1903 virological failure, 532 AIDS events and 480 deaths. LLV200-499 was strongly associated with virological failure [adjusted hazard ratio (aHR) 3.97, 95% confidence interval (CI) 3.05-5.17]. LLV50-199 was weakly associated with virological failure (aHR 1.38, 95% CI 0.96-2.00). LLV50-199 and LLV200-499 were not associated with AIDS event/death (aHR 1.13, 95% CI 0.81-1.68; and aHR 0.95, 95% CI 0.62-1.48, [corrected] respectively).CONCLUSION: LLV200-499 was strongly associated with virological failure, but not with AIDS event/death. Our results support the US guidelines, which define virological failure as a confirmed viral load above 200 copies/ml.
AB - BACKGROUND: The goal of antiretroviral therapy (ART) is to reduce HIV-related morbidity and mortality by suppressing HIV replication. The prognostic value of persistent low-level viremia (LLV), particularly for clinical outcomes, is unknown.OBJECTIVE: Assess the association of different levels of LLV with virological failure, AIDS event, and death among HIV-infected patients receiving combination ART.METHODS: We analyzed data from 18 cohorts in Europe and North America, contributing to the ART Cohort Collaboration. Eligible patients achieved viral load below 50 copies/ml within 3-9 months after ART initiation. LLV50-199 was defined as two consecutive viral loads between 50 and 199 copies/ml and LLV200-499 as two consecutive viral loads between 50 and 499 copies/ml, with at least one between 200 and 499 copies/ml. We used Cox models to estimate the association of LLV with virological failure (two consecutive viral loads at least 500 copies/ml or one viral load at least 500 copies/ml, followed by a modification of ART) and AIDS event/death.RESULTS: Among 17 902 patients, 624 (3.5%) experienced LLV50-199 and 482 (2.7%) LLV200-499. Median follow-up was 2.3 and 3.1 years for virological and clinical outcomes, respectively. There were 1903 virological failure, 532 AIDS events and 480 deaths. LLV200-499 was strongly associated with virological failure [adjusted hazard ratio (aHR) 3.97, 95% confidence interval (CI) 3.05-5.17]. LLV50-199 was weakly associated with virological failure (aHR 1.38, 95% CI 0.96-2.00). LLV50-199 and LLV200-499 were not associated with AIDS event/death (aHR 1.13, 95% CI 0.81-1.68; and aHR 0.95, 95% CI 0.62-1.48, [corrected] respectively).CONCLUSION: LLV200-499 was strongly associated with virological failure, but not with AIDS event/death. Our results support the US guidelines, which define virological failure as a confirmed viral load above 200 copies/ml.
KW - Adult
KW - Anti-Retroviral Agents
KW - Antiretroviral Therapy, Highly Active
KW - Europe
KW - Female
KW - HIV Infections
KW - HIV-1
KW - Humans
KW - Male
KW - Middle Aged
KW - North America
KW - Prognosis
KW - Survival Analysis
KW - Treatment Outcome
KW - Viral Load
KW - Viremia
U2 - 10.1097/QAD.0000000000000544
DO - 10.1097/QAD.0000000000000544
M3 - Journal article
C2 - 25686685
SN - 0269-9370
VL - 29
SP - 373
EP - 383
JO - AIDS (London, England)
JF - AIDS (London, England)
IS - 3
ER -