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Набор скоро начнётся NCT07251179

Characterization of Autoreactive b Lymphocytes in Autoimmune Diseases and Immune Deficiencies

Наблюдательное Systemic Lupus Erythematosus Systemic Scleroderma ANCA-associated Vasculitis Antiphospholipid Syndrome

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: blood draw.
Кому может быть актуально
Состояния в реестре: Systemic Lupus Erythematosus, Systemic Scleroderma, ANCA-associated Vasculitis, Antiphospholipid Syndrome. Базовые параметры: 18 лет — 70 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
Франция
Следующий шаг
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Обзор

Autoimmune diseases (AID), whether systemic or organ-specific, affect approximately one in ten people, and their prevalence continues to increase. Many AIDs are linked to the emergence of autoreactive B cells (BCs) directed against components of the self. In healthy individuals, these autoreactive B cells are counter-selected or regulated before reaching the antibody-secreting cell compartment. However, in predisposed individuals, a breakdown in B cell tolerance can occur, leading to the formation of autoantibodies with devastating consequences, such as the emergence of systemic lupus erythematosus (SLE), rheumatoid arthritis, and vasculitis. B-cell depletion is often beneficial in these patients, but paradoxically, therapies targeting B cells are not always effective. Furthermore, B cell depletion via LB-specific antibodies (anti-CD20) or treatment with CD19 chimeric antigen receptor T cells (CAR T) leads to complete and prolonged depression of the entire B compartment without targeting the LB population responsible for the onset of the disease. To date, two pitfalls in studies of human autoreactive LBs often complicate the interpretation of results: i) the difficulty of identifying autoreactive LBs among all LBs, ii) demonstrating the pathogenicity of autoreactive B lymphocytes when they can be identified individually. We propose to quantify and phenotype these autoreactive/pathogenic B cells using high-throughput flow cytometry in several clinical situations.

Вмешательства

  • Биопрепарат blood draw
    blood draw

Первичные конечные точки

  • Study of the percentage of autoreactive LB / tetrameric LB+ [Срок оценки: inclusion visit]

Критерии участия

Критерии включения

  • Patients aged between 18 and 70
  • Patients for whom at least one of the following conditions has been confirmed:
  • Systemic lupus erythematosus meeting the 2019 ACR/EULAR classification criteria.
  • Systemic scleroderma meeting the 2013 ACR/EULAR classification criteria. ANCA-associated vasculitis according to the 2022 EULAR/ACR classification criteria.
  • Antiphospholipid syndrome according to the 2023 ACR/EULAR criteria.
  • Primary immunodeficiencies according to IUIS criteria.
  • Patients capable of understanding the objectives of the research.
  • Patients affiliated with a social security health insurance scheme (beneficiary or dependant).
  • Patients who have signed and dated the informed consent form for non-identifying genetic testing.

Критерии исключения

  • Patient refusing to participate in the study
  • Patient in a period of exclusion (determined by a previous or ongoing study) Inability to provide the subject with informed consent (in an emergency or immediate life-threatening situation, difficulties in understanding the subject, etc.)
  • Patient under legal protection
  • Patient under guardianship or conservatorship

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения
Только случаи

Центры проведения

Франция · 1 центр
  • Hôpitaux Universitaires de Strasbourg — Strasbourg

Идентификаторы

NCT: NCT07251179 · 9942

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗