A Retrospective and Prospective Natural History of Genetic Vasculopathies

NCT06552052 | Recruiting

• 1 other identifier: 2023P000821
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

This study will combine retrospective review of medical records from patients with ACTA2 and ongoing collection of clinical data using standardized instruments and intervals on an observational basis from patients with ACTA2. Patients in cohorts 1-3 will be asked to attend clinic visits in person per the schedule of events. At minimum, the medical records of patients with ACTA2 will be reviewed to record data on aspects of the disease, including disease characteristics and developmental milestones. The study is planned to enroll a total of 100 patients: 7 in cohort 1, 7 in cohort 2, and the remaining in cohorts 3 and 4. This study is planned to study patients for at least 3 years with the option to continue as long as possible for assessment of disease progression. During their continued study participation, as patients age, they may move into the next cohort. Beyond 3 years the duration of the study with be determined by availability of funding from sponsors.

Conditions

Multisystemic Smooth Muscle Dysfunction Syndrome; ACTA2

Outcome Measures

Primary Outcomes (3)

• Retrospectively define sequence and timing of vascular and non-vascular symptoms and disease progression

  1.1 Develop patient surveys and identify retrospective/existing clinical data sources for aggregation, harmonization, and analyses of outcomes and biomarkers to be compared to existing published data. 1.2. Identify modifiers of symptom progression in patients with MSMDS. 1.3 Correlate the degree of disease progression by systems in 40 patients (cross-sectional study) and construct an MSMDS Rating Scale to evaluate disease severity and progression in children. 1.4 Create case report forms based on previously known and developed surveys in 1.1. to allow for standardized prospective data collection (Outcome 2).

  3 Years

• Prospectively assess the rate of change of vascular and non-vascular disease in MSMDS using quantitative measures, patient/caregivers reported outcomes (PROs).

  2.1 Assess vascular and non-vascular disease progression over 3 years. 2.2 Compare the trajectory between clinical rating scales and patient-reported outcomes. 2.3 Correlate disease progression by individual and MSMDS-specific scale with other variables (age at diagnosis, sex, genetic variance, surgeries, etc).

  3 Years

• Determine whether remote assessments with wearable technology systems are comparable with quantitative performance measures obtained in Aim 2

  Use the Actigraphy wearable technology system in conjunction with a video consult to remotely assess gait, limb movement and exercise performance.

  3 Years

Study Arms (4)

Cohort 1 (29 days - 6 years of age)

1. Patient is between the ages of 29 days - 6 years old 2. Confirmed ACTA2 pathogenic variant 3. Available medical records since birth that permit documentation of disease characteristics and developmental milestone 4. Have two parents and/or legal guardians who are English speaking and are able to read, understand, and sign the informed consent 5. Able to tolerate travel to study site

Cohort 2 (7 - 18 years of age)

1. Patient is between the ages of 7 - 18 years old 2. Confirmed ACTA2 pathogenic variant 3. Available medical records since birth that permit documentation of disease characteristics and developmental milestone 4. Have two parents and/or legal guardians who are English speaking and are able to read, understand, and sign the informed consent 5. Able to tolerate travel to study site

Cohort 3 (19 - 99 years of age)

1. Patient is between the ages of 19 - 100 years old 2. Confirmed ACTA2 pathogenic variant 3. Available medical records since birth that permit documentation of disease characteristics and developmental milestone 4. Patient, parent and/or legal guardian is English speaking is able to read, understand, and sign the informed consent 5. Able to tolerate travel to study site

Cohort 4 (Retrospective - All Ages)

1. Patient of any age, alive or deceased 2. Confirmed ACTA2 pathogenic variant 3. Available medical records since birth that permit documentation of disease characteristics and developmental milestone 4. Patient, parent and/or legal guardian is English speaking and able to read, understand, and sign the informed consent

Eligibility Criteria

• Age: 29 Days+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Children who have been diagnosed with a genetic vasculopathy, ACTA2 R179 for example.

You may qualify if:

• Confirmed ACTA2 pathogenic variant
• Available medical records since birth that permit documentation of disease characteristics and developmental milestone
• Have two parents and/or legal guardians who are English speaking and are able to read, understand, and sign the informed consent
• Able to tolerate travel to study site

You may not qualify if:

• Patient is currently pregnant

Sponsors & Collaborators

• Massachusetts General Hospital: lead

Study Sites (1)

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

RECRUITING

Central Study Contacts

Anna V Lynch, BA

CONTACT

617-949-6960; alynch22@mgh.harvard.edu

Diana Tambala, MD

CONTACT

dtambala@mgh.harvard.edu

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Dr. Patricia L. Musolino, MD PhD, Principle Investigator

Study Record Dates

• First Submitted: January 4, 2024
• First Posted: August 13, 2024
• Study Start: May 8, 2024
• Primary Completion (Estimated): December 1, 2027
• Study Completion (Estimated): July 1, 2028
• Last Updated: May 8, 2025

Record last verified: 2025-05

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)