Usefulness of Integrase resistance testing in proviral HIV-1 DNA in patients with Raltegravir prior failure.
BMC Infect Dis
; 16: 197, 2016 May 13.
Article
em En
| MEDLINE
| ID: mdl-27177767
ABSTRACT
BACKGROUND:
In our study, we have hypothesized that proviral DNA may show the history of mutations that emerged at previous failures to a Raltegravir containing regimen, in patients who are currently undetectable and candidates to simplification to a Dolutegravir containing regimen, in order to decide on once a day or twice a day dosing.METHODS:
We have performed a pilot, observational, retrospective, non interventional study, including 7 patients infected by HIV-1, all with a history of previous failure to a RAL containing regimen, that were successfully salvaged and had reached viral suppression. A genotypic viral Integrase region study was available for each patient at the moment of RAL failure. After an average (IQR) time of 48 months (29-53) Integrase resistance mutations in proviral DNA were studied.RESULTS:
All the patients were infected by HIV-1 B subtypes, with a mean age of 55 (range 43 to 56), originating from Spain, and 4 were women. Median viral load (log) and CD4 count at the moment of the study on proviral DNA was of 1.3 log cp/ml (range 0-1.47) and 765.5 cells/µL (range; 436.75-1023.75). The median time (IQR) between previous failure to RAL and the study on proviral DNA was 48 (29-53) months. At Raltegravir failure, N155H was detected in four patients, and other secondary mutations were detected in five patients (71.4 %). In proviral DNA, N155H was detected by population sequencing in three patients (42.8 %), and UDS demonstrated a 9.77 % relative abundance of N155H in the remaining patient. Sanger sequencing correctly identified all the secondary mutations.CONCLUSION:
This is a pilot study that demonstrates the possibility of properly identifying N155H and some secondary mutations 29-53 months after failure.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Infecções por HIV
/
HIV-1
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Inibidores de Integrase de HIV
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Farmacorresistência Viral
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Raltegravir Potássico
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article