On 20 May 1983, Barré-Sinoussi is first author of the Science paper reporting isolation of a new retrovirus (LAV, later HIV-1) linked to AIDS.
On 20 May 1983, Françoise Barré-Sinoussi was named first author of a landmark paper published in the journal Science, titled "Isolation of a T-lymphotropic retrovirus from a patient at risk for acquired immune deficiency syndrome (AIDS)." The paper reported the isolation and initial characterization of a novel human retrovirus, which the team termed lymphadenopathy-associated virus (LAV) — later renamed HIV-1 (Human Immunodeficiency Virus type 1).
This publication is one of the most consequential biomedical papers of the twentieth century. It was the first peer-reviewed report establishing that a new retrovirus, distinct from previously known human retroviruses, was associated with the syndrome then devastating patient populations worldwide, particularly among gay men, intravenous drug users, and hemophiliacs. Barré-Sinoussi's position as first author reflected her central, hands-on experimental role in the discovery, conducted within Luc Montagnier's laboratory at the Institut Pasteur.
The paper's publication ignited a period of intense scientific controversy, including a parallel and competing claim of discovery by American researcher Robert Gallo, which was eventually resolved with formal international recognition of the Pasteur team's priority. This 1983 discovery enabled the development of the first HIV antibody tests, informed early public health responses, and laid the essential scientific groundwork for antiretroviral therapies that would later transform HIV from a fatal diagnosis into a manageable chronic condition. It directly led to Barré-Sinoussi's Nobel Prize in 2008.