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Completed OBSERVATIONAL NCT00059423

Natural History Study for BEN

Natural History and Molecular Characterization of Benign Ethnic Neutropenia in Individuals of African Descent

Sponsor: National Heart, Lung, and Blood Institute (NHLBI)

Conditions Agranulocytosis Hematologic Diseases Leukocyte Disorders Leukopenia Neutropenia
Updated 16 times since 2017 Last updated: Mar 21, 2024 Started: Jun 3, 2003 Primary completion: Apr 23, 2019 Completion: Jun 26, 2020
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00059423, this observational or N/A phase trial focuses on Agranulocytosis and Hematologic Diseases and remains completed. Sponsored by National Heart, Lung, and Blood Institute (NHLBI), it has been updated 16 times since 2003, reflecting substantial change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

~Jan 2017 – ~Apr 2018 · 15 months · monthly snapshot~Apr 2018 – ~Jun 2018 · 2 months · monthly snapshot~Jun 2018 – ~Aug 2018 · 2 months · monthly snapshot~Aug 2018 – ~Apr 2019 · 8 months · monthly snapshot~Apr 2019 – ~Jun 2019 · 2 months · monthly snapshot~Jun 2019 – ~Jul 2019 · 30 days · monthly snapshot~Jul 2019 – ~Oct 2019 · 3 months · monthly snapshot~Oct 2019 – ~Feb 2020 · 4 months · monthly snapshot~Feb 2020 – ~May 2020 · 3 months · monthly snapshot~May 2020 – ~Jun 2020 · 31 days · monthly snapshot~Jun 2020 – ~Jul 2020 · 30 days · monthly snapshot~Jul 2020 – ~Jan 2021 · 6 months · monthly snapshot~Jan 2021 – ~Apr 2024 · 39 months · monthly snapshot~Apr 2024 – ~Jul 2024 · 3 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – present · 22 months · monthly snapshot

Change History

16 versions recorded

  1. Sep 2024 — Present [monthly]

    Completed

  2. Jul 2024 — Sep 2024 [monthly]

    Completed

  3. Apr 2024 — Jul 2024 [monthly]

    Completed

  4. Jan 2021 — Apr 2024 [monthly]

    Completed

  5. Jul 2020 — Jan 2021 [monthly]

    Completed

▶ Show 11 earlier versions

  1. Jun 2020 — Jul 2020 [monthly]

    Completed

  2. May 2020 — Jun 2020 [monthly]

    Completed

  3. Feb 2020 — May 2020 [monthly]

    Completed

  4. Oct 2019 — Feb 2020 [monthly]

    Completed

  5. Jul 2019 — Oct 2019 [monthly]

    Completed

  6. Jun 2019 — Jul 2019 [monthly]

    Completed

    Status: Recruiting → Completed

  7. Apr 2019 — Jun 2019 [monthly]

    Recruiting

  8. Aug 2018 — Apr 2019 [monthly]

    Recruiting

  9. Jun 2018 — Aug 2018 [monthly]

    Recruiting

  10. Apr 2018 — Jun 2018 [monthly]

    Recruiting

    Phase: NA → None

  11. Jan 2017 — Apr 2018 [monthly]

    Recruiting NA

    First recorded

Jun 2003

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Heart, Lung, and Blood Institute (NHLBI)
Data source: National Institutes of Health Clinical Center (CC)

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations