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Role of Neuroinflammation and Blood-Brain Barrier Breakdown in Intracerebral Hemorrhage. (INFINITE)

6 de maio de 2026 atualizado por: University Hospital, Toulouse
In this prospective, multicenter study of patients with acute spontaneous supratentorial Intracerebral Hemorrhage (ICH), each participant will have a standardized multimodal evaluation of neuroinflammation at 10 (±2) days after onset including translocator protein 18 kDa (TSPO) positron emission tomography (PET) using 18F-DPA-714 radioligand, BBB imaging using Dynamic contrast-enhanced (DCE)-MRI and a panel of pro-inflammatory and anti-inflammatory plasma biomarkers.

Visão geral do estudo

Status

Ainda não está recrutando

Condições

Intervenção / Tratamento

Descrição detalhada

Intracerebral Hemorrhage (ICH) is the most devastating stroke subtype that affects > 3 million people worldwide each year. Despite important efforts and the hope that minimally invasive surgical procedures may offer, there is currently no effective treatment. Perihematomal edema - a surrogate marker of neuroinflammation - has emerged as important contributors to poor functional outcome following acute ICH, and a potential treatment target. Innovative techniques have been developed to image and measure neuroimmune response (TSPO PET) and BBB integrity (DCE-MRI). These novel methods have been poorly studied in ICH. The effects of in vivo perihematomal neuroinflammation on the functional outcome of patients with acute ICH is widely unknown.

The present study is a prospective, multicenter study of patients with acute spontaneous supratentorial ICH (within 48h after onset). Each participant will have a standardized multimodal evaluation of neuroinflammation at 10 days after onset including TSPO PET using 18F-DPA-714 radioligand, BBB imaging using DCE-MRI and a panel of pro-inflammatory and anti-inflammatory plasma biomarkers.

In hospital follow up visit will occur at 14 days and end of follow up visit at 180 days. Functional outcome will be assessed by modified Rankin scale (mRS), which is a widely used and validated scale - ranging from 0 (no symptoms) to 6 (death) - to evaluate the functional outcome following ischemic or hemorrhagic strokes.

Tipo de estudo

Intervencional

Inscrição (Estimado)

117

Estágio

  • Fase 2

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

Locais de estudo

  • França
      • Bordeaux, França, 33000
      • Montpellier, França, 34000
      • Toulouse, França, 31000
        • CHU de Toulouse
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Adulto
  • Adulto mais velho

Aceita Voluntários Saudáveis

Não

Descrição

Inclusion Criteria:

  1. Adults (≥ 18 years old);
  2. presenting with a symptomatic spontaneous supratentorial ICH;
  3. ICH within 48 hours after symptoms onset (or last seen well);
  4. ICH confirmed by brain imaging;
  5. Informed consent documented;
  6. Affiliated or beneficiary of social security scheme.

Exclusion Criteria:

  1. Massive ICH volume (≥ 60 ml) at admission;
  2. Severe coma (defined as a Glasgow Coma Scale score < 6) at admission;
  3. Planned neurosurgical hematoma evacuation;
  4. Decision already taken for palliative care with withdrawal of active treatment;
  5. Pre-existing dependance defined as a mRS score ≥2 prior to ICH occurrence;
  6. Underlying secondary cause of ICH including macrovascular causes (brain arteriovenous malformation, intracranial aneurysm, dural arteriovenous fistula, cavernous malformation), brain tumour, cerebral venous thrombosis, hemorrhagic infarction. Patients taking oral anticoagulant can be included;
  7. TSPO genotyping demonstrating a low affinity binder profile,
  8. Unable to tolerate or contraindicated to brain MRI: medical material not MRI compatible, claustrophobia, known hypersensitivity to gadoteric acid, meglumin or any drug containing gadolinium;
  9. Estimated glomerular filtration rate < 30 ml/min/1.73 m 2
  10. Unable to tolerate or contraindicated to 18F-DPA714 PET: women who are pregnant or breastfeeding, claustrophobia, and known hypersensitivity to DPA-714;
  11. Use of Benzodiazepines within 7 days (within 6 weeks for prazepam, diazepam or clorazepate) preceding TSPO PET acquisition;
  12. Co-existing neuroinflammatory disease such as Multiple Sclerosis, Neuromyelitis optica, Neurosarcoidosis, autoimmune encephalitis, CNS vasculitis;
  13. Conditions requiring long-term immunosuppressive medication;
  14. Expected impossible follow-up or poor compliance;
  15. Patient under tutorship, curatorship, or legal protection.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Ciência básica
  • Alocação: N / D
  • Modelo Intervencional: Atribuição de grupo único
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: 18F-DPA-714 PET radiotracer uptake within the perihematomal edema
18F-DPA-714 injection for TEP
Medicamento: TEP with 18F-DPA-714 injection
TEP with 18F-DPA-714 injection

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the functional outcome (poor versus favorable) at 6 months
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • The functional outcome at 6 months after ICH is quantified by the modified Rankin scale (which ranges from 0 [no symptoms] to 6 [death]). Poor functional outcome is defined as a modified Rankin scale score (mRs) ≥3
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Volume of brain tissue with increased 18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the functional outcome (poor versus favorable) at 6 months
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH o The functional outcome is measured at 6 months after ICH
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR). Volume of brain tissue (mL) with increased 18F-DPA-714 binding is measured in the area around the hematoma.
  • The functional outcome at 6 months after ICH is quantified by the modified Rankin scale (which ranges from 0 [no symptoms] to 6 [death]). Poor functional outcome is defined as a modified Rankin scale score (mRs) ≥3
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH o The functional outcome is measured at 6 months after ICH
18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the occurrence of neurological deterioration within 14 days after ICH onset
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Neurological deterioration is assessed within 14 days after ICH onset
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • Neurological deterioration within 14 days after ICH onset is defined as a ≥4-point increase on the National Institutes of Health Stroke Scale (NIHSS) or ≥2-point decrease on the Glasgow Coma Scale (GCS) compared to baseline scores at the pre-inclusion visit
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Neurological deterioration is assessed within 14 days after ICH onset
18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the occurrence of early death
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Early death is assessed within 30 days after ICH onset.
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • Early death is defined as death at day 30 after ICH onset.
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Early death is assessed within 30 days after ICH onset.
18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the clinical outcome at 6 months
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Clinical outcome is assessed et 6 months
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • Clinical outcome at 6 months is assessed by the distribution of modified Rankin scale scores
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Clinical outcome is assessed et 6 months
18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH according to the mortality
Prazo: o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Mortality is assessed at 6 months.
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • Mortality is assessed at 6 months.
o 18F-DPA-714 binding is measured at day 10 ±2 after ICH. o Mortality is assessed at 6 months.
Correlations of 18F-DPA-714 PET radiotracer uptake at day 10 ±2 after ICH with MRI-derived measures of BBB breakdown and plasma levels of inflammatory biomarkers
Prazo: PET, MRI and plasma inflammatory biomarkers measures are evaluated at day 10 ±2 after ICH onset
  • 18F-DPA-714 binding is measured by the mean standard uptake value ratio (SUVR) within the perihematomal edema (PHE) using the mirror region of interest (ROI) in the contralateral hemisphere as reference.
  • BBB breakdown is quantified by MRI-derived quantitative measures based on maps of the contrast agent transfer coefficient (Ktrans) in the perihematomal area at day 10 ±2 after ICH;
  • Plasma levels of inflammatory biomarkers (including MMP9, TNF alpha, , IL-6 and -10, soluble TLR 2/4, Neutrophil Extracellular Traps (NETs) are measured at day 10 ±2 after ICH onset.
PET, MRI and plasma inflammatory biomarkers measures are evaluated at day 10 ±2 after ICH onset
BBB breakdown at day 10 ±2 after ICH according to the functional outcome (poor versus favorable) at 6 months
Prazo: o MRI-derived quantitative measures of BBB breakdown are assessed at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH.
  • BBB breakdown is quantified by MRI-derived quantitative measures based on maps of the contrast agent transfer coefficient (Ktrans) in the perihematomal area at day 10 ±2 after ICH;
  • The functional outcome at 6 months after ICH is quantified by the modified Rankin scale (which ranges from 0 [no symptoms] to 6 [death]). Poor functional outcome is defined as a modified Rankin scale score (mRs) ≥3
o MRI-derived quantitative measures of BBB breakdown are assessed at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH.
Plasma levels of inflammatory biomarkers at day 10 ±2 after ICH according to the functional outcome (poor versus favorable) at 6 months
Prazo: o Plasma inflammatory biomarkers measures are assessed at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH.
  • Plasma levels of inflammatory biomarkers (including MMP9, TNF alpha, , IL-6 and -10, soluble TLR 2/4, Neutrophil Extracellular Traps (NETs) are measured at day 10 ±2 after ICH onset;
  • The functional outcome at 6 months after ICH is quantified by the modified Rankin scale (which ranges from 0 [no symptoms] to 6 [death]). Poor functional outcome is defined as a modified Rankin scale score (mRs) ≥3
o Plasma inflammatory biomarkers measures are assessed at day 10 ±2 after ICH. o The functional outcome is measured at 6 months after ICH.

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

University Hospital, Toulouse

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de junho de 2026

Conclusão Primária (Estimado)

1 de setembro de 2029

Conclusão do estudo (Estimado)

1 de dezembro de 2029

Datas de inscrição no estudo

Enviado pela primeira vez

26 de janeiro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

6 de maio de 2026

Primeira postagem (Real)

13 de maio de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

13 de maio de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

6 de maio de 2026

Última verificação

1 de maio de 2026

Mais Informações

Termos relacionados a este estudo

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • RC31/24/0443
  • 2025-521923-58-00 (Ctis)

Plano para dados de participantes individuais (IPD)

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INDECISO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

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