NCT00044122Recruiting
Study of Factors Regulating Mast Cell Proliferation
Regulation of the Proliferation and Survival of Normal and Neoplastic Human Mast Cells
Source: ClinicalTrials.gov · Last updated 26 Oct 2026
Brief summary (registry, in English)
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.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 700 (estimated)
- First submitted
- 17 Aug 2002
- Start date
- 18 Sept 2002
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NCT number
- NCT00044122
What you commit to
- Study type: Observational
- Planned participants: 700
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Criteria the registry did not label
- 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 \< 8 g/dL, hematocrit \< 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.
Age in the registry: 1 day to 80 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| National Institutes of Health Clinical Center Coordinator of this site? Confirm its status | Bethesda | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.