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Microsoft powerpoint - olt-hiv viral rebound_sf v.8. croi 2010 final

17th CROI 2010, San Francisco, CA - 2010
Background: Discontinuation of HAART in chronic HIV-1 infection is accompanied by a rapid rise in plasma HIV-1
RNA viral load (pVL) and a decrease in CD4+ T-cell counts. However, pVL and immunological dynamics following
Poster 687: Short-term plasma HIV-1 RNA viral load
transitory cessation of HAART after OLT in HIV-1–infected patients on immunosuppressive therapy has not been wel characterized. The aim of this study is to describe the short-term (4 weeks) dynamics of pVL and CD4/CD8 and immunological changes following temporary
subset changes after discontinuation of HAART.
discontinuation of HAART after liver transplantation
Methods: We included 25 consecutive HCV/HIV-coinfected patients who underwent OLT between 2002-2006 and
had on HAART a pVL below detection levels (BDL, <50 copies/mL) at OLT, who transiently discontinued cART and
(OLT) in HIV-1–infected recipients
restarted it at least 7 days later. Plasma HIV-1 RNA viral load and T cell subsets were determined before after cART
discontinuation. Data were obtained from the FIPSE OLT-HIV-05-GESIDA 45-05 database.
Results: Ten patients were off cART at 6-9 days of OLT, 11 after 10-17 days and 4 after 28 days. The 25 cases had
been on cART for a median (IQR) of 4.80 (1.04-8.56) years. Median (IQR) pre-HAART pVL was 4.63 (3.29; 5.03) log
José M. Miró,1 Juan González,2 Pilar Miralles,3 Miguel Montejo,4 Juan C. Meneu,5 10 copies/mL. cART based on efavirenz, a protease inhibitor or other combinations at OLT was taken in 8, 7 and 10 Antonio Rafecas,6 Montserrat Tuset,1 Elisa Cordero,7 Iñaki Pérez,1 Antonio cases, respectively. Median (IQR) CD4+ and CD8+ T-cell counts before discontinuation were 321 (200-408) and 487 (297;724) cells/mm3, respectively. A cyclosporine A (CsA)–based immunosuppressive regimen was started in Rimola,1 and the GESIDA/FIPSE OLT in HIV-Infected Patients Research Group 40% patients and a tacrolimus-based regimen in 60%. A rebound in pVL was detected at 6-17 days in 6 out of 24 patients (25%; 95% CI 12%;45%). Only one of the patients on CsA had a pVL rebound at 2 weeks (P=.18). pVL 1Hosp. Clínic - IDIBAPS. Univ. of Barcelona, Barcelona; 2Hosp. Univ. La Paz, Madrid; 3Hosp. Univ. rebound was higher than 10,000 copies/mL at 6-9, 10-17 and 28 days in only 1, 1 and none case, respectively. Gregorio Marañón, Madrid; 4Hosp. Univ. Cruces, Baracaldo; 5Hosp Univ. 12 de Octubre, Madrid; Median CD4+ T-cell counts at 6-9, 10-17 and 28 days were 231 (104;342), 229 (88;356) and 316 (241;608), 6Hosp. Bellvitge - IDIBELL. Univ. Barcelona, Barcelona; 7 Hosp. Univ. Virgen del Rocio, Sevilla; respectively (P<.05 at 6-9 and 10-17 days in comparison with baseline). Plasma VL returned to undetectable levels following reintroduction of cART in all cases
Conclusions: pVL remained BDL or rebounded at a very low level of viremia in most HCV-HIV OLT recipients after
2-4 weeks off HAART, probably due to the reduction in the T-cell immune activation induced by OLT immunosuppressive therapy.
PATIENTS & METHODS
Discontinuation of combined antiretroviral therapy (cART) in • We included 25 HCV/HIV-coinfected patients on cART who chronic HIV-1 infection (CHI) is accompanied by a rapid rise in underwent OLT between 2002-2006 and had a pVL below plasma HIV-1 RNA viral load (pVL) and a decrease in CD4+ T- detection levels (<50 copies/mL) at OLT, and who temporarily cell counts (Garcia F et al. AIDS. 1999; 13:F79-F86). However, pVL and immunological dynamics following temporary discontinuation of cART after OLT in HIV-1–infected patients on • Plasma HIV-1 RNA viral load and T-cell subsets were immunosuppressive therapy has not been well characterized. determined before resumption of cART (at 1, 2 or 4 weeks).
Clinical, virological, and immunological data were obtained from the FIPSE OLT-HIV-05-GESIDA 45-05 database.
The aim of this study is to describe the short-term (4 weeks) • pVL rebound was compared with a historical cohort of 8 dynamics of pVL and CD4/CD8 subset changes after patients with CHI who stopped cART after 1 year of effective treatment (Garcia F. AIDS. 1999;13:F79-F86).
STATISTICAL ANALYSIS
Patient Characteristics (I)
• Continuous variables were assessed using the t test for normally distributed data or the Mann-Whitney U test for non-normally distributed data. Categorical variables were compared using the Fisher exact test. The analysis was performed using SAS version 9.1.3 software (SAS Institute, Cary, NC, USA) and the level of significance was HIV-risk factors
Immunosuppressive regimen
•Data from Garcia F et al., AIDS 1999;13:F79-F86. All patients were treated with a ritonavir-boosted PI-based regimen; ** Median (IQR); NA=not applicable.
Patient Characteristics (II)
cART Before and After OLT (I)
Antiretroviral regimen
When cART was restarted
* T20+SQV+3TC — T20+TDF+FPV — DDI+EFV+SQV/r * Data from Garcia F et al. AIDS 1999;13:F79-F86; ** Median (IQR).
cART Before and After OLT (II)
Plasma HIV-1 RNA Viral Load Rebound After OLT
• Plasma HIV-1 RNA viral load rebound (>200 cp/mL) after 6- 17 days of cART discontinuation was detected in 6 out of 24 patients (25%; 95% confidence interval, 12%-45%). Only pVL >200 c/mL after cART D/C
one had a VL rebound >500,000 cp/mL.
• Median (IQR) time for restarting cART after OLT was 16 (13; pVL rebound >4 log10/mL
Twelve patients (48%) received the same cART regimen.
• All patients reached a plasma HIV-1 RNA viral load below detectable levels following reintroduction of cART.
* Data from Garcia F et al. AIDS 1999;13:F79-F86; NA=not applicable.
Plasma HIV-1 RNA Viral Rebound After OLT
Predictors of Plasma VL Rebound > 200 cp./mL
Variable
No. +ve/Total (%)
P value
Immunosuppressive regimen
Antiretroviral regimen
Length of cART before OLT
CD4+ T-cell count before OLT
Peak VL before starting cART
Days after OLT
Evolution of CD4 and CD8 in Patients With/out
Evolution of CD4 and CD8 Counts in Patients With/out
cART Discontinuation After OLT (≤ 4 Weeks)
cART Discontinuation After OLT (≤ 4 Weeks)
Off cART after OLT
On cART after OLT
CD4+ T-cell counts
CD8+ T-cell counts
* P<.05 at 6-9 and 10-17 days in comparison with baseline.
CONCLUSIONS
SITES AND INVESTIGATORS (I)
• Plasma HIV-RNA viral load remained below detectable levels HOSP. DE BELLVITGE – U.B. (BARCELONA)
or rebounded at a very low level of viremia in most HCV/HIV- A. Rafecas, FX Xiol, J.Fabregat, J.Carratálá, N. Fernández, R. Lastra et al.
HOSP. RAMON Y CAJAL (MADRID)
coinfected OLT recipients after 2-4 weeks off cART in R. Barcena, J. Fortún, C. Quereda, S. Moreno, P. Martín, M. García, AM. Moreno, comparison with chronically HIV-infected patients who HOSP. VALL D´HEBRON – U.A.B. (BARCELONA)
V. Vargas, Ll. Castells, E. Ribera, A. Pahissa, JI. Esteban, J. Gavaldá, R. Charco, O. Len. HOSP. DE CRUCES (VIZCAYA)
pVL returned to undetectable levels following reintroduction of M. Montejo, A. Valdivieso, M. Gastaca, P. Ruiz, A. Ventoso, J. Gonzalez, M. Testillano, cART in all cases, suggesting that no mutations associated J. Bustamante, M.J. Suarez, J.R. Fernandez, E. Montejo, J. Ortiz de Urbina.
HOSP. CLINIC - IDIBAPS – U.B. (BARCELONA)
with antiretroviral resistance had been selected.
JM Miró, A. Rimola, A. Moreno, C. Manzardo, M. Laguno, F.Aguero, M. López-Dieguez, M. Tuset, C. Cervera, M. Monras, J. Mallolas, J. Blanch, C. Lanaspa, I. Pérez, E. de Lazzari, JM Gatell.
This low level of viremia was probably due to the reduction in HOSP. UNIV. GREGORIO MARAÑON (MADRID)
the T-cell immune activation induced by immunosuppressive R. Bañares, P. Miralles, M. Salcedo, J. Cosín, JC López Bernaldo de Quirós, J. Berenguer et al.
HOSP. UNIV. VIRGEN DEL ROCIO (SEVILLA)
E. Cordero, JM. Cisneros, MA. Gómez, M. Sayago, JM. Pascasio, C. Bernal, JM. Sousa et al.
SITES AND INVESTIGATORS (II)
ACKNOWLEDGEMENTS
HOSP. UNIV. LA FE (VALENCIA)
M. Blanes, M. Prieto, J. López, M. Berenguer et al. HOSP. UNIV. REINA SOFIA (CORDOBA)
- Fundación para la Investigación y Prevención del SIDA en España J.Torre-Cisneros, M. de la Mata, JJ Castón, S. Rufian, P. López, A. Rivero, A. Camacho, C. Natera, E. Vidal, R. Lara et al.
HOSP. UNIV. CENTRAL DE ASTURIAS (OVIEDO)
- Grupo de Estudio de Sida (GESIDA/SEIMC).
M. Rodríguez, I. González-Pinto, V. Asensi, MP. Alonso , ML. González-Diéguez.
- Sociedad Española de Trasplante Hepático (SETH).
HOSP. UNIV. VIRGEN DE LA ARRIXACA (MURCIA)
- Grupo de Estudio de Infecciones en Trasplantados. HOSP. CARLOS HAYA (MALAGA)
M. Jiménez, JM. Rodrigo, J. Santoyo, JL. Fernández, J. de la Cruz et al.
HOSP. 12 DE OCTUBRE (MADRID)
M. Abradelo, F. Pulido, R. Rubio, E. Moreno, S. Olivares et al. - Secretaria del Plan Nacional del Sida (SPNS) del Ministerio de HOSP. UNIV. JUAN CANALEJO (LA CORUÑA)
JD. Pedreira, F. Suárez, S. López, P. Vázquez, MA. Castro.
HOSP. UNIV. MARQUES DE VALDECILLA (SANTANDER)
- Organización Nacional de Trasplante (ONT).
MC. Fariñas, JD. García, S. Echevarría, E. Fábrega, F. Casafont et al.
HOSP. UNIV. SANTIAGO DE COMPOSTELA (LA CORUÑA)
A. Antela, E. Losada, E. Varo, J. Fernández.
HOSP. CLINICO LOZANO BLESA (ZARAGOZA)
R. Lozano, E. Tejero, S. Letona,, JJ. Araiz, P. Luque, A. Navarro et al.

Source: http://fundacionseimcgesida.org/apartados/archivos/2/4505-poster-croi-2010.pdf

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