NCT07615400 · JCR Pharmaceuticals Co., Ltd.
A Long-Term Observational Study of Patients With Fucosidosis
What this study is about
The purpose of this observational research study is to learn more about the natural history of fucosidosis, its symptoms, and how it develops over time. This study intends to collect information from participants diagnosed with fucosidosis; however, this study does not include any medication or treatment other than the usual medical care provided to study participants.
View original scientific description
The purpose of this observational research study is to learn more about the natural history of fucosidosis, its symptoms, and how it develops over time. This study intends to collect information from participants diagnosed with fucosidosis; however, this study does not include any medication or treatment other than the usual medical care provided to study participants. The information collected in this study will be used to help understand the disease characteristics of fucosidosis; with this information potentially being able to help design future studies and treatments for this disease. There is currently no approved treatment for patients with fucosidosis. The study consists of 2 parts: a) Part A - retrospective data collection, and b) Part B - prospective data collection.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- (Part A): \- Confirmed diagnosis of fucosidosis
Exclusion criteria
- Patient/parent/caregiver not willing to consent to participate
- Patient deceased with no availability of appropriate historical consent, and patient's family/caregivers are either unable to be contacted, or refuse consent to data sharing Inclusion Criteria (Part B):
- Patient is alive
- Confirmed diagnosis of fucosidosis Exclusion Criteria (Part B):
- Patient/parent/caregiver not willing to consent to participate
- Current participation in an interventional or therapeutic study
- Patients who, in the opinion of the site investigator, would be unable or unsuitable to participate in the demands of the study
Where
- Orange, California
- Minneapolis, Minnesota
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 29, 2026 · Source of record for eligibility and locations