July 23, 2019
Gilead Announces Latest Data in Ongoing HIV Cure Research Program
– New Studies Evaluate Agents with Potential Role in
“While treatments have improved dramatically, people living with HIV still face a lifetime of therapy and potential complications. That reality drives our ongoing pursuit of a cure for HIV,” said
Studies on TLR7 agonists presented at IAS include:
Oral presentation WEAA0304: Vesatolimod (GS-9620) is safe and pharmacodynamically active in HIV-infected individuals
This double-blind, placebo-controlled Phase 1 clinical study enrolled 48 people living with HIV on antiretroviral therapy. The median age of the participants in this study was 47 years (43 were male), with a median of 8.1 years of therapy. In the study, 36 participants received escalating doses of vesatolimod (1-12 mg) and 12 received placebo every other week. Vesatolimod at higher doses stimulated a range of immune responses. Vesatolimod was well-tolerated at all doses, with no drug-related Grade 3 or 4 adverse events, no related serious adverse events and no adverse events leading to study drug discontinuation. Study drug-related adverse events including mild, transient flu-like symptoms were observed in 9 of 36 participants at doses of 2 mg and higher, consistent with previous trials. These symptoms resolved within one day and did not occur with each dose.
“This study demonstrates that vesatolimod can be administered to people living with HIV at doses that may have immune effect and are well-tolerated. The results support studies into the potential role of vesatolimod as part of combination regimens aimed at achieving ART-free control of HIV,” said Sharon A. Riddler, MD, Director of Clinical Research in the Infectious Diseases Division,
Oral presentation WEAA0105: Oral TLR7 agonist administration induces an immunostimulatory response in SIV-infected ART-suppressed infant rhesus macaques
This preclinical study evaluated the oral administration of GS-986 in two simian immunodeficiency virus (SIV)-infected, virologically suppressed rhesus macaques. At seven months of age, both macaques were administered 0.1 mg of GS-986 orally. Four weeks later, a second 0.3 mg dose was administered, and in both instances blood count, viral loads, cytokine concentrations and immune response were monitored. At both the 0.1 mg and 0.3 mg dose levels, GS-986 induced immune system activation with observed increases in peripheral plasma cytokines/chemokines and activation of immune cells. GS-986 was well-tolerated with normal complete blood count and maintenance of viral suppression.
These results add new information to the existing preclinical data on GS-986 for the potential future application of an oral TLR7 agonist in people living with HIV.
Vesatolimod and GS-986 are investigational compounds and are not approved by the
There is no cure for HIV infection or AIDS.
For nearly 30 years, Gilead has been a leading innovator in the field of HIV, driving advances in treatment, prevention, testing and linkage to care, and cure research. Today, it is estimated that more than 12 million people living with HIV globally receive antiretroviral therapy provided by Gilead or one of the company’s manufacturing partners.
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This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including the possibility of unfavorable results from ongoing and additional clinical trials involving GS-9620 and GS-986. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. The reader is cautioned not to rely on these forward-looking statements. These and other risks are described in detail in Gilead’s Quarterly Report on Form 10-Q for the quarter ended
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