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Undersøgelse af faktorer, der regulerer mastcelleproliferation

Regulering af spredning og overlevelse af normale og neoplastiske humane mastceller

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.

...

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

This protocol is designed to examine those growth potentiating and inhibiting factors which regulate mast cell number and survival in patients with mastocytosis, and to explore the molecular basis of the disease process in hopes of improving therapy. Patients will carry the diagnosis of mastocytosis based on abnormal bone marrow biopsy and aspirate, abnormal skin biopsy, presence of urticaria pigmentosa, and if available, elevated serum tryptase level > 20 ng/ml and the presence of aberrant mast cell morphology and surface markers of CD2 and CD25. Mastocytosis patients will include children and adults from zero years to 80 years of age. Unaffected relatives (age 2 to 80 years) may also be enrolled. The protocol is designated for up to a 1-year enrollment period; with only a small number of enrolled patients that will stay on study for more than one visit, based on investigator assessment of contribution to study objectives. Participants will undergo standard physical exam, medical history review, and blood collection for clinical and research laboratory evaluations. We will collect clinical data and biological specimens for research evaluation from individuals undergoing clinically indicated diagnostic procedures. Some patients may participate in research evaluations including buccal swab collection, dietary intake assessment, stool collection, exercise challenge, microbiome studies, and activity tracking. These studies are optional. Patients may be asked to re-enter this protocol at a later time for further follow-up.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

700

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Maryland
      • Bethesda, Maryland, Forenede Stater, 20892
        • Rekruttering
        • National Institutes of Health Clinical Center
        • Kontakt:
          • For more information at the NIH Clinical Center contact Office of Patient Recruitment (OPR)
          • Telefonnummer: TTY dial 711 800-411-1222
          • E-mail: ccopr@nih.gov

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

1 dag til 80 år (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

primary clinical

Beskrivelse

  • 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.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: PROSPECTIVE

Kohorter og interventioner

Gruppe / kohorte
Adult Relatives

Relatives of patient with mastocytosis

Adults with Mastocytosis

Adults with documented mastocytosis

Pediatric Patients with Mastocytosis

Pediatric patients with documented mastocytosis

Pediatric Relatives

Pediatric relatives of patients with mastocytosis

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
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...
Tidsramme: Patients return to NIH as necessary

continuing collection of cells from subjects with mastocytosis for ongoing experimentation in laboratory

Patients return to NIH as necessary

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Hirsh D Komarow, M.D., National Institute of Allergy and Infectious Diseases (NIAID)

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

18. september 2002

Datoer for studieregistrering

Først indsendt

17. august 2002

Først indsendt, der opfyldte QC-kriterier

17. august 2002

Først opslået (Anslået)

19. august 2002

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. november 2026

Sidst verificeret

2. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 020277
  • 02-I-0277

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

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