The Characterization of CD34+ Derived Mast Cell Precursors

Study start date: December 3, 1997

SUBJECT INCLUSION CRITERIA: Healthy Volunteers must: Be 18-70 years of age Be healthy Have adequate peripheral venous access Have normal renal function (creatinine less than or equal to 1.5mg/dL; less than or equal to 1 plus proteinuria) Have normal hepatic function (bilirubin less than or equal to 1.5 mg/dL) Have normal hematologic function (WBC greater than or equal to 3000/mm(3); granulocytes greater than or equal to 1500/mm(3) ; platelets greater than or equal to 175,000; hemoglobin greater than or equal to 12.5 g/dL) Patients must: Be 18-70 years of age Have mast cell hyperplasia compatible with a diagnosis of systemic mastocytosis (applicable to systemic mastocytosis patients only) or other allergic, hematologic, or immunologic condition Have adequate peripheral venous access or be willing to have a central line placed. First be admitted as inpatients under an existing NIH protocol Have preserved renal function (creatinine less than or equal to 2 mg/dL; less than or equal to 2 plus proteinuria) Have preserved hepatic function (bilirubin less than or equal to 1.5 mg/dL) Have preserved hematologic function (WBC greater than or equal to 3000/mm(3); granulocytes greater than or equal to 1500/mm(3) ; platelets greater than or equal to 175,000; hemoglobin greater than or equal to 12.5 g/dL) All female subjects of childbearing potential: May be enrolled if using effective contraception Have a negative serum or urine pregnancy test determined within 72 hours before beginning Plerixafor or G-CSF administration SUBJECT EXCLUSION CRITERIA: All subjects must not meet any of the following criteria: Healthy Volunteers and patients must not: Have active bacterial, fungal or viral infections Have viral screens positive for HIV or hepatitis B or C Be pregnant or lactating Have a history of autoimmune disease such as rheumatoid arthritis, vasculitis, pyoderma gangrenosum or similar disorder Have any condition, which in the judgment of the investigator, might place the subject at undue risk Healthy Volunteers with any of the following will be excluded: Splenomegaly, pulmonary fibrosis and other related conditions Use of any investigative drugs within the past 12 months Have a significant coagulation disorder Systemic Mastocytosis and Mast Cell Related Condition Patients with any of the following will be excluded: Patients taking any other growth factors, cytokines or investigative drugs Patients who are hemodynamically unstable (blood pressure systolic of lower than 105 or diastolic lower than 65)