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Innate-like and NK Signatures in Chronic-Treated HIV Infection INSTINCT-HIV (INSTINCT-HIV)

24 september 2026 uppdaterad av: Hospices Civils de Lyon

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

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Intervention / Behandling

Studietyp

Observationell

Inskrivning (Beräknad)

100

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Testmetod

Icke-sannolikhetsprov

Studera befolkning

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.

Beskrivning

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.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiv: PROSPECTIVE

Kohorter och interventioner

Grupp / Kohort
Intervention / Behandling
People living with HIV

Adult patients living with HIV who have been receiving prolonged, continuous, suppressive antiviral treatment for at least five full years.
Biologisk: Blood test

A 50 ml venous blood sample is taken upon the participant's enrolment

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Identifying immune profiles associated with better control of this reservoir.
Tidsram: 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

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Hospices Civils de Lyon

Utredare

  • Huvudutredare: Florence ADER, M.D.,PhD., Hospices Civils de Lyon

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

12 januari 2027

Primärt slutförande (Beräknad)

1 december 2027

Avslutad studie (Beräknad)

1 december 2027

Studieregistreringsdatum

Först inskickad

24 september 2026

Först inskickad som uppfyllde QC-kriterierna

24 september 2026

Första postat (Faktisk)

30 september 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

30 september 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

24 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 69HCL26_0720
  • 2026-A02069-42 (Annan identifierare: ID-RCB)

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

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