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A New Protease Inhibitor

Sep 7, 2000

I have heard a lot of good things about the efficacy and tolerability of the protease inhibitor ABT-378/r in people living with all stages with HIV disease. Despite this agents obvious benefits there doesn't seem to be a consensus about when to use it. I have heard people say that this drug may be so good that it should be saved for a salvage regimen to give experienced patients enhanced efficacy, however, I have also heard that it is so good that it should be used in a first-line regimen because of its PK profile, easy adherence and minimal side effects. Will you please tell me you thoughts about the optimal place in ART to use ABT 378/r?

Response from Dr. Squires

The questions that you ask about ABT-378/r (new trade name is Kaletra) are the same ones that physicians are pondering. I think that the answer is that we have to individualize therapy depending on the previous treatment history, if any, the other medications that the person may be on and the lifestyle of the person -- in other words, how can they best incorporate a regimen into their schedule without any disruption, if possible. So far, the study results indicate good virologic responses in both treatment-naive and -experienced patients with relatively few side effects. The important thing to remember about the treatment-experienced patients is that both a novel PI (ABT-378/r) and an NNRTI (patients were NNRTI-naive) were used; the results may not be quite as good for the patient who is NNRTI-experienced. There will be more information available about the long term efficacy of this agent after ICAAC.

Hope that this has been helpful.


Kathleen E. Squires, M.D.

treatment options to d4t/ fat wasting

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