Article (Scientific journals)
Subgroup analyses of maraviroc in previously treated R5 HIV-1 infection.
Fatkenheuer, Gerd; Nelson, Mark; Lazzarin, Adriano et al.
2008In New England Journal of Medicine, 359 (14), p. 1442-55
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Keywords :
Adult; Aged; Anti-Retroviral Agents/adverse effects/therapeutic use; CD4 Lymphocyte Count; Cyclohexanes/adverse effects/therapeutic use; Double-Blind Method; Drug Therapy, Combination; Ethnic Groups; Female; Genotype; HIV Envelope Protein gp41/therapeutic use; HIV Fusion Inhibitors/adverse effects/therapeutic use; HIV Infections/drug therapy/immunology/virology; HIV-1/chemistry/genetics; Hepatitis B/blood/complications; Hepatitis C/blood/complications; Humans; Male; Middle Aged; Odds Ratio; Peptide Fragments/therapeutic use; RNA, Viral/blood; Receptors, CCR5/antagonists & inhibitors/genetics; Transaminases/blood; Treatment Outcome; Triazoles/adverse effects/therapeutic use; Viral Load
Abstract :
[en] BACKGROUND: We conducted subanalyses of the combined results of the Maraviroc versus Optimized Therapy in Viremic Antiretroviral Treatment-Experienced Patients (MOTIVATE) 1 and MOTIVATE 2 studies to better characterize the efficacy and safety of maraviroc in key subgroups of patients. METHODS: We analyzed pooled data from week 48 from the two studies according to sex, race or ethnic group, clade, CC chemokine receptor 5 (CCR5) delta32 genotype, viral load at the time of screening, the use or nonuse of enfuvirtide in optimized background therapy (OBT), the baseline CD4 cell count, the number of active antiretroviral drugs coadministered, the first use of selected background agents, and tropism at baseline. Changes in viral tropism and the CD4 count at treatment failure were evaluated. Data on aminotransferase levels in patients coinfected with hepatitis B virus (HBV) or hepatitis C virus (HCV) were also analyzed. RESULTS: A treatment benefit of maraviroc plus OBT over placebo plus OBT was shown in all subgroups, including patients with a low CD4 cell count at baseline, those with a high viral load at screening, and those who had not received active agents in OBT. Analyses of the virologic response according to the first use of selected background drugs showed the additional benefit of adding a potent new drug to maraviroc at the initiation of maraviroc therapy. More patients in whom maraviroc failed had a virus binding to the CXC chemokine receptor 4 (CXCR4) at failure, but there was no evidence of a decrease in the CD4 cell count at failure in such patients as compared with those in whom placebo failed. Subanalyses involving patients coinfected with HBV or HCV revealed no evidence of excess hepatotoxic effects as compared with baseline. CONCLUSIONS: Subanalyses of pooled data from week 48 indicate that maraviroc provides a valuable treatment option for a wide spectrum of patients with R5 HIV-1 infection who have been treated previously. (ClinicalTrials.gov numbers, NCT00098306 and NCT00098722.)
Disciplines :
Immunology & infectious disease
Author, co-author :
Fatkenheuer, Gerd
Nelson, Mark
Lazzarin, Adriano
Konourina, Irina
Hoepelman, Andy I M
Lampiris, Harry
Hirschel, Bernard
Tebas, Pablo
Raffi, Francois
Trottier, Benoit
Bellos, Nicholaos
Saag, Michael
Cooper, David A
Westby, Mike
Tawadrous, Margaret
Sullivan, John F
Ridgway, Caroline
Dunne, Michael W
Felstead, Steve
Mayer, Howard
van der Ryst, Elna
More authors (11 more) Less
Other collaborator :
Moutschen, Michel  ;  Université de Liège - ULiège > Département des sciences cliniques > Immunopathologie - Transplantation
Language :
English
Title :
Subgroup analyses of maraviroc in previously treated R5 HIV-1 infection.
Publication date :
2008
Journal title :
New England Journal of Medicine
ISSN :
0028-4793
eISSN :
1533-4406
Publisher :
Massachusetts Medical Society, Waltham, United States - Massachusetts
Volume :
359
Issue :
14
Pages :
1442-55
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 March 2010

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