Factors associated with poor immunologic response to virologic suppression by highly active antiretroviral therapy in HIV-infected women.
Virologic response to highly active antiretroviral therapy (HAART) typically results in a substantial rise in CD4 cell counts. We investigated factors associated with poor CD4 response among HIV-infected women followed at 6-monthly intervals in the Women's Interagency HIV Study. Women with nadir CD4 counts < 350 cells/mm3 who achieved at least 6 months of plasma HIV RNA < 400 copies/ml were studied. Demographic, clinical, and treatment factors were compared between immunologic nonresponders, defined as the lower quartile of CD4 count change after two visits with virologic suppression (< 56 cell/mm3; n = 38), and the remaining group of responders (n = 115). Immunologic nonresponders had lower baseline HIV RNA levels and higher CD4 counts, more frequently used HAART 6 months prior to achieving consistent viral suppression, and more commonly had HIV RNA levels > 80 but < 400 copies/mL at both suppressive visits (21 vs. 7.8%, p = 0.024). In multivariate analysis, higher CD4 count and lower HIV RNA level at the last presuppressive visit were associated with immune nonresponse. We conclude that higher baseline CD4 count and lower HIV RNA level were associated with poor immunologic response to HAART in women with virologic suppression for at least 6 months. Persistent low level viremia may also contribute.
Vaamonde
Carlos M
CM
Division of International Medicine and Infectious Diseases, Department of Medicine, Weill Medical College of Cornell University, New York, New York 10021, USA.
Hoover
Donald R
DR
Anastos
Kathryn
K
Tan
Tianren
T
Shi
Qiuhu
Q
Gao
Wei
W
Kovacs
Andrea
A
Cohen
Mardge
M
DeHovitz
Jack
J
Glesby
Marshall J
MJ
D000328:Adult; D023241:Antiretroviral Therapy, Highly Active; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D015658:HIV Infections / Q000188:drug therapy* / Q000821:virology; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans; D015337:Multicenter Studies as Topic; D015999:Multivariate Analysis; D011446:Prospective Studies; D012367:RNA, Viral / Q000097:blood; D013997:Time Factors; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology; D019562:Viral Load
D012367:RNA, Viral