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Efficacy of raltegravir: from healthy volunteers to phase III trials
Ist Teil von
Enfermedades infecciosas y microbiología clínica, 2008-11, Vol.26 Suppl 12, p.29
Ort / Verlag
Spain
Erscheinungsjahr
2008
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Raltegravir is the first in a new class of antiretroviral treatments called integrase inhibitors, which work by preventing HIV from inserting its genetic material into the DNA of the human chromosome. Phase I-III studies have shown this drug to have potent antiretroviral action, which is more rapid than that of protease inhibitors. The dose selected in efficacy studies is 400 mg every 12 h. However, due to the favorable pharmacokinetic profile of raltegravir, the possibility of administration of 600 to 800 mg once daily is under study. Given that this drug is not metabolized by the cytochrome P450 system, the potential for pharmacological interactions is low. Moreover, because humans lack a cellular homologue for HIV integrase, raltegravir has a low potential for toxicity. Raltegravir has an intermediate genetic barrier and consequently there may be cross-resistance across the integrase inhibitor class. For all these reasons, raltegravir is an attractive option in treatment-naive and pretreated patients and in those receiving simplification regimens.