Innate-like and NK Signatures in Chronic-Treated HIV Infection INSTINCT-HIV (INSTINCT-HIV)
Infection with the human immunodeficiency virus (HIV) is a chronic condition requiring lifelong antiretroviral therapy (ART). Despite prolonged virological control under suppressive ART, HIV persists in the form of a stable viral reservoir known as the 'integrated' reservoir, mainly localised in CD4+ memory T cells, which constitutes the obstacle to a functional or sterilising cure of the infection. The immunological mechanisms involved in the control, stability or gradual depletion of this reservoir are still not fully understood.
Among the cellular populations of the innate immune system, Natural Killer (NK) cells play an important role in the trajectory of the reservoir by having the ability to eliminate HIV-infected cells. However, several studies have shown that these NK cells exhibit variable capabilities in eliminating such cells, suggesting that inter-individual heterogeneity in innate immune responses may contribute to the observed differences in the size and persistence of the viral reservoir in people living with HIV (PLHIV) on long-term suppressive ART. Functionally, interactions between NK cell receptors and class I HLA molecules (HLA I) strongly modulate the education, repertoire and effector functions of NK cells, indicating that the immunogenetics of the host's HLA I alleles is therefore a major determinant of this variability. Certain receptor/HLA I combinations, notably receptors known as KIRs, have been associated with differences in the progression of HIV infection and immunovirological control. Consequently, their role in the dynamics of the viral reservoir during prolonged suppressive ART needs to be explored. Finally, biological sex significantly influences anti-HIV immune responses, with females showing a favourable response. Whilst sex differences in NK cell function and immune activation have been described, the impact of biological sex on the dynamics of the HIV reservoir under prolonged suppressive ART remains largely unknown and requires further investigation
Panoramica dello studio
Stato
Intervento / Trattamento
Tipo di studio
Iscrizione (Stimato)
Contatti e Sedi
Contatto studio
- Nome: Florence ADER, M.D.,PhD.
- Numero di telefono: +33 472071107
- Email: florence.ader@chu-lyon.fr
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
The target population consists of adults aged 18 years or over living with HIV who are being monitored by the Department of Infectious and Tropical Diseases at the Hospices Civils de Lyon and who have been receiving prolonged, continuous, suppressive antiviral treatment for at least five full years.
Participants must meet the following criteria:
- a plasma viral load that has been consistently undetectable since the start of ART and for more than 5 years;
- must not have experienced, since the start of antiviral treatment, more than two isolated episodes of virological rebound ('blips') ≥ 100 copies/mL, measured in a peripheral blood sample taken during a routine consultation.
Descrizione
Inclusion Criteria:
- Be aged 18 or over;
- Be living with HIV-1 infection;
- Be under the care of the Department of Infectious and Tropical Diseases at the Lyon university Hopsital (Hospices Civils de Lyon);
- Have been receiving continuous ART for at least 5 full years;
- Have a consistently undetectable plasma HIV viral load whilst on ART;
- Have experienced no more than two isolated episodes of virological rebound ('blips') ≥ 100 copies/mL;
- Have usable biological samples for the planned analyses and/or agree to the collection of samples required for the research;
- Have received written and verbal information about the research;
- Have signed the written consent form prior to any research-specific procedures.
Exclusion Criteria:
- Patients who have taken part in an interventional therapeutic trial specifically targeting an HIV cure strategy likely to have a lasting effect on the immunological or virological parameters under investigation;
- Patients who have experienced more than two episodes of virological rebound ≥ 100 copies/mL whilst on ART;
- Pregnant women, women in labour or breastfeeding women;
- Persons deprived of their liberty by judicial or administrative order;
- Persons subject to a legal protection order;
- Adults subject to a legal protection measure (guardianship, curatorship);
- Persons admitted to a health or social care facility for purposes other than research;
- Persons receiving psychiatric care;
- Persons who have expressed their objection to participating in the research or to the use of their data and biological samples.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Modelli osservazionali: COHORT
- Prospettive temporali: PROSPECTIVE
Coorti e interventi
Gruppo / Coorte |
Intervento / Trattamento |
|---|---|
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People living with HIV
Adult patients living with HIV who have been receiving prolonged, continuous, suppressive antiviral treatment for at least five full years. |
A 50 ml venous blood sample is taken upon the participant's enrolment |
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Identifying immune profiles associated with better control of this reservoir.
Lasso di tempo: Day 1
|
The primary endpoint is a composite measure combining the phenotypic and functional characterisation of NK cells and related cells of the innate immune system, and the number of mononuclear cells infected with HIV provirus (reservoir). |
Day 1
|
Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Florence ADER, M.D.,PhD., Hospices Civils de Lyon
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Infezioni a trasmissione ematica
- Malattie urogenitali
- Malattie genitali
- Malattie del sistema immunitario
- Infezioni
- Infezioni da virus a RNA
- Malattie virali
- Malattie trasmissibili
- Malattie sessualmente trasmissibili, virali
- Malattie trasmesse sessualmente
- Infezioni da lentivirus
- Infezioni da retroviridae
- Sindromi da deficit immunologico
- Malattie da virus lenti
- Infezioni da HIV
- Sindrome da immunodeficienza acquisita
- Tecniche investigative
- Tecniche di laboratorio clinico
- Tecniche e procedure diagnostiche
- Diagnosi
- Test ematologici
Altri numeri di identificazione dello studio
- 69HCL26_0720
- 2026-A02069-42 (Altro identificatore: ID-RCB)
Informazioni su farmaci e dispositivi, documenti di studio
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