Long-term Outcomes of Conservative Management in Patients with Moyamoya Disease and Their First-degree Relatives (LAMORA)

Recruiting

• Conditions: Moyamoya Disease
• Interventions: Other: Conservative management

• Registration Number: NCT05332756
• Lead Sponsor: Beijing Tiantan Hospital

Brief Summary

The purpose of this study is to investigate the long-term outcomes of conservative management in patients with moyamoya disease and their first-degree relatives, and provide potential pathogenesis of moyamoya disease.

Detailed Description

Moyamoya disease (MMD) is a chronic occlusive-stenosis cerebrovascular disease that characterized by the stenosis of internal carotid artery termination and the formation of net-like vessel. It is a multifactorial disease caused by genetic, inflammatory, immunological and other environmental factors. The specific pathogenesis of MMD is still unclear. The treatment modalities of revascularization and conservative management have been used in patients with MMD. However, the long-term outcomes of MMD with conservative management remain unknown. Also, some first-degree relatives who are carriers of genetic variants occasionally manifest with intracranial arterial stenosis. Therefore, it is significant to detect the long-term outcomes of conservative treatment in MMD patients and their first-degree relatives, and thus provide potential pathogenesis of MMD.

Study Timeline

• Study First Submitted: 2022-03-31
• Study First Submitted QC: 2022-04-10
• Study First Posted: 2022-04-18
• Study Start: 2022-05-01
• Status Verified: 2024-12
• Last Update Submitted: 2024-12-16
• Last Update Posted: 2024-12-19
• Primary Completion: 2026-11-30
• Study Completion: 2026-12-31

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 400

Inclusion Criteria

1. Patients with age between 2-60 years;
2. A clinical diagnosis of moyamoya disease, including unilateral and bilateral disease.
3. Patients are medically treated with antiplatelets, antiepileptics, antihypertensives and vasodilators depending on the presentation.
4. Capable of understanding the purpose and risk of the study and has signed the informed consent. If the participant is not capable of this at the time of enrollment, a legally authorized representative will provide written informed consent in accordance with all regulations.
5. Ability to comply with study follow-up.

Exclusion Criteria

1. Concomitant other diseases, including systemic vasculitis, neurofibroma, meningitis, sickle cell disease, down's syndrome, and previous basilar radiotherapy.
2. Patients with cardiogenic embolism, including a history of atrial fibrillation, valvular disease or cardiac valve replacement.
3. Patients are allergic to the contrast agents.
4. Patients are treated with direct, indirect, or combined revascularization depending on the presentation.
5. Physical or subjective failure to cooperate with the examination or serious comorbid diseases.
6. Patients are unable or unlikely to return for follow-up visits.
7. Any other reasons that, in the opinion of the investigators, make the participant unsuitable for enrollment.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Moyamoya disease patients	Conservative management	-
First-degree relatives of patients with Moyamoya Disease	Conservative management	-

Primary Outcome Measures

Name	Time	Method
Cerebrovascular events	5 years

Secondary Outcome Measures

Name	Time	Method
Change in immunological, inflammatory, angiogenesis biomarkers of peripheral blood	Baseline, 1 year, 2 years, and 5 years during follow-up	Serum, plasma, RNA, immune cells and cytokines
Identification of RNF213 variants	Baseline
Unfavorable neurological outcome (mRS>2)	6 months, 1 year, 2 years, and 5 years during follow-up
Change in radiological characteristics as assessed by HR-MRI	Baseline, 1 year, 2 years, and 5 years during follow-up
Change in angiographic characteristics as assessed by MRA	Baseline, 1 year, 2 years, and 5 years during follow-up
Change in cerebral perfusion status as assessed by CTP	Baseline, 6 months, 1 year, 2 years, and 5 years during follow-up
Change in angiographic features as assessed by CTA	Baseline, 6 months, 1 year, 2 years, and 5 years during follow-up

Trial Locations

Locations (1)

Beijing Tiantan Hospital Capital Medical University; 🇨🇳 Beijing, Beijing, China