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Gene transfer in humans using a conditionally replicating lentiviral vector.


ABSTRACT: We report findings from a clinical evaluation of lentiviral vectors in a phase I open-label nonrandomized clinical trial for HIV. This trial evaluated the safety of a conditionally replicating HIV-1-derived vector expressing an antisense gene against the HIV envelope. Five subjects with chronic HIV infection who had failed to respond to at least two antiviral regimens were enrolled. A single i.v. infusion of gene-modified autologous CD4 T cells was well tolerated in all patients. Viral loads were stable, and one subject exhibited a sustained decrease in viral load. CD4 counts remained steady or increased in four subjects, and sustained gene transfer was observed. Self-limiting mobilization of the vector was observed in four of five patients. There is no evidence for insertional mutagenesis after 21-36 months of observation. Immune function improved in four subjects. Lentiviral vectors appear promising for gene transfer to humans.

SUBMITTER: Levine BL 

PROVIDER: S-EPMC1635018 | biostudies-literature | 2006 Nov

REPOSITORIES: biostudies-literature

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Gene transfer in humans using a conditionally replicating lentiviral vector.

Levine Bruce L BL   Humeau Laurent M LM   Boyer Jean J   MacGregor Rob-Roy RR   Rebello Tessio T   Lu Xiaobin X   Binder Gwendolyn K GK   Slepushkin Vladimir V   Lemiale Franck F   Mascola John R JR   Bushman Frederic D FD   Dropulic Boro B   June Carl H CH  

Proceedings of the National Academy of Sciences of the United States of America 20061107 46


We report findings from a clinical evaluation of lentiviral vectors in a phase I open-label nonrandomized clinical trial for HIV. This trial evaluated the safety of a conditionally replicating HIV-1-derived vector expressing an antisense gene against the HIV envelope. Five subjects with chronic HIV infection who had failed to respond to at least two antiviral regimens were enrolled. A single i.v. infusion of gene-modified autologous CD4 T cells was well tolerated in all patients. Viral loads wer  ...[more]

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