International Registry for Severe Chronic Neutropenia

October 20, 2020 updated by: David Chandler Dale, National Center for Research Resources (NCRR)

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.

Study Overview

Status

Unknown

Conditions

Detailed Description

PROTOCOL OUTLINE:

Patients are treated by the referring physician as medically indicated. Clinical data are collected at baseline and then every 6 months.

Study Type

Observational

Enrollment (Anticipated)

1000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Victoria
      • Melbourne, Victoria, Australia, 3350
    • Manitoba
      • Winnipeg, Manitoba, Canada, R3E 0V9
        • Recruiting
        • CancerCare Manitoba
        • Contact:
          • Bonnie Paula Cham
          • Phone Number: 204-787-4147
    • Ontario
    • England
      • Leeds, England, United Kingdom, LS1 3EX
        • Recruiting
        • Leeds Teaching Hospitals, Yorkshire Regional Centre for Paediatric Oncology & Haematology
        • Contact:
          • Sally Kinsey, MD
          • Phone Number: +44-113-392-8191
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
      • Worcester, Massachusetts, United States, 01655
    • Michigan
      • Ann Arbor, Michigan, United States, 48109-0266
        • Recruiting
        • University of Michigan
        • Contact:
    • New Jersey
      • Paterson, New Jersey, United States, 07503
        • Recruiting
        • St. Joseph's Children's Hospital
        • Contact:
        • Contact:
    • Washington
      • Seattle, Washington, United States, 98195
        • Recruiting
        • University of Washington School of Medicine
        • Contact:
          • David Chandler Dale
          • Phone Number: 206-543-7215

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

3 months and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

patients diagnosed with severe chronic neutropenia

Description

Inclusion Criteria - Subjects are eligible for enrollment if they meet the following criteria:

  1. A confirmed diagnosis of severe chronic neutropenia based on documented absolute neutrophil counts of less than 0.5x109/L on at least three occasions in the three months prior to enrollment.
  2. For subjects with presumed cyclic neutropenia, documentation of at least two neutrophil cycles is preferred. Documentation should include the nadirs with neutrophil counts of less than 200 followed by a clear increase in the counts generally to at least 500 to 1000 followed by a second nadir, usually expected to occur at about three weeks after the first nadir, i.e., cycling with a three week periodicity. Documentation with at least six weeks of counts and two expected nadirs is preferred.

    Cases not showing clear oscillations will be categorized as congenital (if neutropenia or neutropenic complications appear to have occurred from birth) or idiopathic (if all symptoms in evidence point to an acquired disorder occurring after the first year of life).

  3. Bone marrow aspiration consistent with the diagnosis of congenital, cyclic or idiopathic neutropenia. In all of these conditions, it is expected that the marrow aspirate evaluation at the time of neutropenia will show a deficiency of mature neutrophils. An exception is myelokathexis, a condition with large accumulations of neutrophils with pycnotic nuclei in the marrow. Bone marrow aspirates may show some dyspoiesis of the neutrophil lineage, but abnormalities of erythropoiesis or platelet formation are, in general, inconsistent with the diagnosis of SCN.
  4. Normal cytogenetic evaluation. The only exception being cases of well documented severe congenital neutropenia with preferably previously documented normal cytogenetic evaluation will now be enrolled in the Registry at the time of evolution to leukemia.
  5. History of recurrent infections (i.e., severe mouth ulcers, gingivitis and sinusitis).
  6. Age greater than three months.
  7. Independent of hematological parameters, subjects with the following diagnoses may be included: Shwachman-Diamond syndrome (SDS), glycogen storage disease type 1b (GSD1b), Barth syndrome, and Cohen's syndrome.
  8. Subjects with moderately severe chronic neutropenia (i.e., ANC less than 1.0x109/L) and recurrent severe infections (i.e., deep tissue infections of subcutaneous areas, lungs, liver, etc.).
  9. Immune neutropenia with positive anti-neutrophil antibodies meeting criteria in 1, 3, 5 and 6.
  10. All SCN subjects originally enrolled in Amgen-sponsored SCN studies.

Exclusion Criteria

  1. Neutropenia known to be drug induced
  2. Primary myelodysplasia
  3. Primary leukemia
  4. Aplastic anemia
  5. Known HIV disease
  6. Systemic autoimmune diseases such as rheumatoid arthritis or systemic lupus erythematosus
  7. Chemotherapy-induced neutropenia (within the last 5 years)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Adult Neutropenic Subject
Adult subjects with diagnosis of severe chronic neutropenia
Minor Neutropenic Subject
Children under 18 years of age who are diagnosed with severe chronic neutropenia
Parent of Minor Neutropenic Subjects
Parent of minor subjects (i.e., children under 18 years of age) who are diagnosed with severe chronic neutropenia

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Collaborators

Investigators

  • Study Chair: David Chandler Dale, University of Washington

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 1, 1994

Study Registration Dates

First Submitted

October 18, 1999

First Submitted That Met QC Criteria

October 18, 1999

First Posted (Estimate)

October 19, 1999

Study Record Updates

Last Update Posted (Actual)

October 22, 2020

Last Update Submitted That Met QC Criteria

October 20, 2020

Last Verified

October 1, 2020

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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