Study of Factors Regulating Mast Cell Proliferation (NCT00044122) | Clinical Trial Compass
RecruitingNot Applicable
Study of Factors Regulating Mast Cell Proliferation
United States600 participantsStarted 2002-09-18
Plain-language summary
This study will examine growth factors that promote and inhibit mast cell proliferation resulting in mastocytosis, a disease of excessive mast cells in the body. These cells can release chemicals that cause itching, blisters, flushing, bone pain and abdominal pain.
Patients up to 80 years of age with mastocytosis may be eligible for this 1-day study. Participants will have one visit at NIH lasting up to 8 hours, during which they will undergo the following tests and procedures:
* Medical history and physical examination.
* Laboratory studies, if medically indicated.
* Blood tests to identify genetic changes important in the growth, development, and functioning of mast cells.
* Bone marrow aspiration and biopsy.
For the bone marrow procedure, the skin over the hipbone and the outer surface of the bone itself are numbed with local anesthesia. Then, a special needle is inserted into the hipbone and about 1 tablespoon of bone marrow is drawn into a syringe. Another needle is inserted into the same area to collect a small piece of the bone marrow. Additional procedures may include allergen testing, urinalysis, and 24-hour urine collection.
Participants will receive an evaluation of their mastocytosis.
Who can participate
Age range
1 Day – 80 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
* PATIENT PARTICIPANT INCLUSION CRITERIA:
Participants with mastocytosis zero to 80 years of age may participate in telehealth visits, and two to 80 years of age may participate on-site at NIH Clinical Center.
Histologic evidence of increased mast cell number by bone marrow and/or skin biopsy or documentation of mastocytosis in the skin
supported with a photograph of diagnostic skin lesions
Must be under the care of a primary care physician to be enrolled.
Ability to provide informed consent.
PATIENT PARTICIPANT EXCLUSION CRITERIA:
Anemia with hemoglobin less than 8 g/dL, hematocrit less than 24.
Any condition that in the opinion of the investigator contraindicates participation in this study.
RELATIVE INCLUSION CRITERIA:
Two to 80 years of age.
A biological relative without the diagnosis of mastocytosis by skin examination or histologic evidence in a skin or bone marrow biopsy
Participant has a primary medical care provider outside the NIH
Ability to provide informed consent.
RELATIVE EXCLUSION CRITERIA:
Any condition that in the opinion of the investigator contraindicates participation in this study.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
To obtain normal and neoplastic human mast cells from the bone marrow and peripheral blood of patients with mastocytosis in order to study the regulation of the proliferation and survival of these cells, and to assess the extent and classificati...
Timeframe: Patients return to NIH as necessary
Trial details
NCT IDNCT00044122
SponsorNational Institute of Allergy and Infectious Diseases (NIAID)