Combinations Of A Pyrimidine Containing Nnrti With Rt Inhibitors

Abstract

The present invention concerns combinations of a pyrimidine containing NNRTI with nucleoside reverse transcriptase inhibitors and / or nucleotide reverse transcriptase inhibitors useful for the treatment of HIV infected patients or for the prevention of HIV transmission or infection.

Description

FIELD OF THE INVENTION[0001]The present invention concerns combinations of a pyrimidine containing NNRTI with nucleoside reverse transcriptase inhibitors and / or nucleotide reverse transcriptase inhibitors useful for the treatment of HIV infected patients or for the prevention of HIV transmission or infection.BACKGROUND OF THE INVENTION[0002]Despite the fact that significant progress has been made by the introduction of HAART therapy (Highly Active Anti-Retroviral Therapy), resistance of the HIV virus against nucleoside reverse transcriptase inhibitors (NRTIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs), nucleotide reverse transcriptase inhibitors (NtRTIs), protease inhibitors and even the more recent fusion inhibitors is still a major cause of therapy failure. For instance, half of the patients receiving anti-HIV combination therapy do not respond fully to the treatment, mainly because of resistance of the virus to one or more drugs used. Moreover, it has been shown th...

AI Technical Summary

Benefits of technology

[0083]An advantage of the pharmaceutical formulations of the invention resides in the fact that each of the ingredients of the present combinations can be co-formulated in one pharmaceutical formulation and do not have to be administered separately. The daily therapeutic antiretroviral amount of the ingredients of the present combinations of such co-formulated single pharmaceutical form preferably is administered in a single unit dosage form but, if desired, also multiple unit dosage forms, such as two, three, four, five or even more unit dosage forms may be administered. A physician will be able to determine the exact dosage to be given taking into account the severity of the patient's condition as well as the patient's weight, gender and possibly other parameters such as individual differences in absorption, biodistribution, metabolism and excretion rates for each drug as well as other factors known to those skilled in the art.

Problems solved by technology

Despite the fact that significant progress has been made by the introduction of HAART therapy (Highly Active Anti-Retroviral Therapy), resistance of the HIV virus against nucleoside reverse transcriptase inhibitors (NRTIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs), nucleotide reverse transcriptase inhibitors (NtRTIs), protease inhibitors and even the more recent fusion inhibitors is still a major cause of therapy failure.

For instance, half of the patients receiving anti-HIV combination therapy do not respond fully to the treatment, mainly because of resistance of the virus to one or more drugs used.

Moreover, it has been shown that resistant virus is carried over to newly infected individuals, resulting in severely limited therapy options for these drug-naive patients.

The pharmacokinetic profile of many commercially available antiretrovirals does not allow relatively low therapeutic doses.

Poor pharmacokinetic profiles often in combination with poor solubility properties of the antiretrovirals cause the AIDS patient to face a high pill burden which is particularly undesirable for drug-naïve patients or first line therapy.

Moreover, as a consequence of the AIDS virus even resisting antiretroviral combination therapy, a physician will boost the plasma levels of the active drugs in order for said antiretrovirals to regain effectivity against the mutated HIV viruses, the consequence of which is an even higher increase in pill burden.

Boosting plasma levels may also lead to an increased risk of non-compliance with the prescribed therapy and to increased side-effects.