[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100557310":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":19,"centralContacts":10,"locations":24,"responsibleParty":45,"collaborators":10,"id":47,"slug":10,"hasResults":48,"nctId":49,"briefTitle":50,"officialTitle":51,"acronym":10,"eligibilityCriteria":52,"healthyVolunteers":53,"sex":54,"minAge":55,"maxAge":10,"enrollmentInfo":56,"targetDuration":10,"studyType":59,"phases":10,"briefSummary":60,"conditions":61,"keywords":10,"overallStatus":26,"whyStopped":10,"lastUpdateSubmitDate":64,"lastUpdatePostDateStruct":65,"startDateStruct":68,"completionDateStruct":70,"leadSponsor":72,"locationsCount":73},{"fullName":5,"class":6},"Mayo Clinic","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Observational",null,"Patients undergo blood sample collection and bone marrow aspiration and biopsy and have their medical records reviewed on study.",[13],"Other: Non-Interventional Study",[15],{"type":6,"name":16,"description":17,"armGroupLabels":18,"otherNames":10},"Non-Interventional Study","Non-interventional study",[9],[20],{"name":21,"affiliation":22,"role":23},"Neil E. Kay, M.D.","Mayo Clinic in Rochester","PRINCIPAL_INVESTIGATOR",[25],{"facility":22,"status":26,"city":27,"state":28,"zip":29,"country":30,"countryCode":31,"cosmosGeoPoint":32,"geoPoint":37,"contacts":38},"RECRUITING","Rochester","Minnesota","55905","United States","US",{"type":33,"coordinates":34},"Point",[35,36],-92.4699,44.02163,{"lat":36,"lon":35},[39,44],{"name":40,"role":41,"phone":42,"phoneExt":10,"email":43},"Clinical Trials Referral Office","CONTACT","855-776-0015","mayocliniccancerstudies@mayo.edu",{"name":21,"role":23,"phone":10,"phoneExt":10,"email":10},{"type":46,"investigatorFullName":10,"investigatorTitle":10,"investigatorAffiliation":10,"oldNameTitle":10,"oldOrganization":10},"SPONSOR","100557310",false,"NCT06536452","Hematopoiesis in MBL and CLL Versus Healthy Age-Matched Control Subjects","Hematopoiesis in Monoclonal B Cell Lymphocytosis (MBL) and B-Chronic Lymphocytic Leukemia (CLL) Versus Healthy Age-Matched Control Subjects","Inclusion Criteria:\n\n* Subjects in the CLL cohort who are eligible for these studies will have a clinically established diagnosis of CLL as assessed by flow cytometry and will include subjects who\n\n  * Remain untreated\n  * Are currently being treated\n  * Who have already been treated\n* Subjects in the MBL cohort will have a clinically established diagnosis of MBL\n* Healthy age-matched control subjects\n* Healthy younger control subjects aged \\> 40 years\n\nExclusion Criteria:\n\n* Anyone under 40\n* Healthy control subjects must not have a diagnosis of CLL or MBL",true,"ALL","40 Years",{"count":57,"type":58},50,"ESTIMATED","OBSERVATIONAL","This study evaluates hematopoiesis to determine how MBL\u002FCLL affected bone marrow responds to fight off infections in the body.",[62,63],"Chronic Lymphocytic Leukemia","Monoclonal B-Cell Lymphocytosis","2026-03-26",{"date":66,"type":67},"2026-03-31","ACTUAL",{"date":69,"type":67},"2016-11-18",{"date":71,"type":58},"2028-11-18",{"name":5,"class":6},1]