Neutropenia | International Registry for Severe Chronic Neutropenia

Neutropenia research study

What is the primary objective of this study?

OBJECTIVES: I. Document the clinical course of severe chronic neutropenia (SCN). II. Monitor and assess long term safety of primary treatment in SCN patients in the United States, Canada, Europe, and Australia. III. Study the incidence and outcome of adverse events such as osteoporosis, splenomegaly, cytogenetic abnormalities, myelodysplastic syndrome, and leukemia. IV. Evaluate growth and development and hematologic parameters. V. Monitor for clinically significant changes in primary treatment response over time. VI. Establish a physician network to increase the understanding of SCN. VII. Establish a demographic database to allow for future research.

Who is eligible to participate?

PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Severe chronic neutropenia (SCN), i.e.: Absolute neutrophil count less than 500/mm3 on 3 occasions within the last 3 months (less than 200/mm3 for cyclic neutropenia) Bone marrow aspirate consistent with SCN History of infection No drug induced neutropenia No myelodysplastic syndrome No aplastic anemia No thrombocytopenia or anemia unless due to Shwachman-Diamond syndrome or glycogen storage disease type IB Prior enrollment on Amgen SCN trials eligible Bone marrow aspiration within 1 year required Cytogenetic evaluation strongly suggested --Prior/Concurrent Therapy-- At least 5 years since prior chemotherapy --Patient Characteristics-- No rheumatoid arthritis No systemic lupus erythematosus No HIV seropositivity

Which medical condition, disease, disorder, syndrome, illness, or injury is researched?


Study Interventions

Interventions can include giving participants drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available or noninvasive approaches such as surveys, education, and interviews.

Study Arms

Research studies and clinical trials typically have two or more research arms. An arm is a group of people who receive the same treatment in the study.

Study Status

Unknown status

Start Date: June 1994

Completed Date:


Type: Observational


Primary Outcome:

Secondary Outcome:

Study sponsors, principal investigator, and references

Principal Investigator: David Chandler Dale

Lead Sponsor: National Center for Research Resources (NCRR)

Collaborator: University of Washington

More information:

Dale DC, Bonilla MA, Boxer L, et al.: Development of AML/MDS in a subset of patients (PTS) with severe chronic neutropenia (SCN). Blood 84(10 suppl 1): 518a, 1994.

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