deltatrials
Recruiting OBSERVATIONAL NCT03949647

Collection of Bone Marrow Aspirate From Normal Volunteers

Sponsor: National Institute on Aging (NIA)

Conditions Normal Aging
Updated 59 times since 2019 Last updated: Jan 14, 2026 Started: May 8, 2019 Primary completion: Dec 31, 2050 Completion: Dec 31, 2050
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This observational or N/A phase trial investigates Normal Aging and is currently actively recruiting participants. National Institute on Aging (NIA) leads this study, which shows 59 recorded versions since 2019 — indicating substantial longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

~Jun 2019 – ~Jul 2019 · 30 days · monthly snapshot~Jul 2019 – ~Aug 2019 · 31 days · monthly snapshot~Aug 2019 – ~Sep 2019 · 31 days · monthly snapshot~Sep 2019 – ~Oct 2019 · 30 days · monthly snapshot~Oct 2019 – ~Nov 2019 · 31 days · monthly snapshot~Nov 2019 – ~Dec 2019 · 30 days · monthly snapshot~Dec 2019 – ~Jan 2020 · 31 days · monthly snapshot~Jan 2020 – ~Feb 2020 · 31 days · monthly snapshot~Feb 2020 – ~Mar 2020 · 29 days · monthly snapshot~Mar 2020 – ~Apr 2020 · 31 days · monthly snapshot~Apr 2020 – ~Dec 2020 · 8 months · monthly snapshot~Dec 2020 – ~Jan 2021 · 31 days · monthly snapshot~Jan 2021 – ~Apr 2021 · 3 months · monthly snapshot~Apr 2021 – ~Nov 2021 · 7 months · monthly snapshot~Nov 2021 – ~Dec 2021 · 30 days · monthly snapshot~Dec 2021 – ~Jan 2022 · 31 days · monthly snapshot~Jan 2022 – ~Feb 2022 · 31 days · monthly snapshot~Feb 2022 – ~Mar 2022 · 28 days · monthly snapshot~Mar 2022 – ~Apr 2022 · 31 days · monthly snapshot~Apr 2022 – ~May 2022 · 30 days · monthly snapshot~May 2022 – ~Jun 2022 · 31 days · monthly snapshot~Jun 2022 – ~Jul 2022 · 30 days · monthly snapshot~Jul 2022 – ~Sep 2022 · 2 months · monthly snapshot~Sep 2022 – ~Oct 2022 · 30 days · monthly snapshot~Oct 2022 – ~Nov 2022 · 31 days · monthly snapshot~Nov 2022 – ~Dec 2022 · 30 days · monthly snapshot~Dec 2022 – ~Jan 2023 · 31 days · monthly snapshot~Jan 2023 – ~Feb 2023 · 31 days · monthly snapshot~Feb 2023 – ~Mar 2023 · 28 days · monthly snapshot~Mar 2023 – ~Apr 2023 · 31 days · monthly snapshot~Apr 2023 – ~May 2023 · 30 days · monthly snapshot~May 2023 – ~Jun 2023 · 31 days · monthly snapshot~Jun 2023 – ~Aug 2023 · 2 months · monthly snapshot~Aug 2023 – ~Sep 2023 · 31 days · monthly snapshot~Sep 2023 – ~Oct 2023 · 30 days · monthly snapshot~Oct 2023 – ~Dec 2023 · 2 months · monthly snapshot~Dec 2023 – ~Feb 2024 · 2 months · monthly snapshot~Feb 2024 – ~Mar 2024 · 29 days · monthly snapshot~Mar 2024 – ~Apr 2024 · 31 days · monthly snapshot~Apr 2024 – ~May 2024 · 30 days · monthly snapshot~May 2024 – ~Jun 2024 · 31 days · monthly snapshot~Jun 2024 – ~Jul 2024 · 30 days · monthly snapshot~Jul 2024 – ~Aug 2024 · 31 days · monthly snapshot~Aug 2024 – ~Sep 2024 · 31 days · monthly snapshot~Sep 2024 – ~Oct 2024 · 30 days · monthly snapshot~Oct 2024 – ~Dec 2024 · 2 months · monthly snapshot~Dec 2024 – ~Jan 2025 · 31 days · monthly snapshot~Jan 2025 – ~Feb 2025 · 31 days · monthly snapshot~Feb 2025 – ~Apr 2025 · 59 days · monthly snapshot~Apr 2025 – ~May 2025 · 30 days · monthly snapshot~May 2025 – ~Jun 2025 · 31 days · monthly snapshot~Jun 2025 – ~Jul 2025 · 30 days · monthly snapshot~Jul 2025 – ~Aug 2025 · 31 days · monthly snapshot~Aug 2025 – ~Sep 2025 · 31 days · monthly snapshot~Sep 2025 – ~Oct 2025 · 30 days · monthly snapshot~Oct 2025 – ~Nov 2025 · 31 days · monthly snapshot~Nov 2025 – ~Jan 2026 · 2 months · monthly snapshot~Jan 2026 – ~Feb 2026 · 31 days · monthly snapshot~Feb 2026 – present · 7 months · monthly snapshot

Change History

59 versions recorded

  1. Feb 2026 — Present [monthly]

    Recruiting

  2. Jan 2026 — Feb 2026 [monthly]

    Recruiting

  3. Nov 2025 — Jan 2026 [monthly]

    Recruiting

  4. Oct 2025 — Nov 2025 [monthly]

    Recruiting

  5. Sep 2025 — Oct 2025 [monthly]

    Recruiting

▶ Show 54 earlier versions

  1. Aug 2025 — Sep 2025 [monthly]

    Recruiting

  2. Jul 2025 — Aug 2025 [monthly]

    Recruiting

  3. Jun 2025 — Jul 2025 [monthly]

    Recruiting

  4. May 2025 — Jun 2025 [monthly]

    Recruiting

  5. Apr 2025 — May 2025 [monthly]

    Recruiting

  6. Feb 2025 — Apr 2025 [monthly]

    Recruiting

  7. Jan 2025 — Feb 2025 [monthly]

    Recruiting

  8. Dec 2024 — Jan 2025 [monthly]

    Recruiting

  9. Oct 2024 — Dec 2024 [monthly]

    Recruiting

  10. Sep 2024 — Oct 2024 [monthly]

    Recruiting

  11. Aug 2024 — Sep 2024 [monthly]

    Recruiting

  12. Jul 2024 — Aug 2024 [monthly]

    Recruiting

  13. Jun 2024 — Jul 2024 [monthly]

    Recruiting

  14. May 2024 — Jun 2024 [monthly]

    Recruiting

  15. Apr 2024 — May 2024 [monthly]

    Recruiting

  16. Mar 2024 — Apr 2024 [monthly]

    Recruiting

  17. Feb 2024 — Mar 2024 [monthly]

    Recruiting

  18. Dec 2023 — Feb 2024 [monthly]

    Recruiting

  19. Oct 2023 — Dec 2023 [monthly]

    Recruiting

  20. Sep 2023 — Oct 2023 [monthly]

    Recruiting

  21. Aug 2023 — Sep 2023 [monthly]

    Recruiting

  22. Jun 2023 — Aug 2023 [monthly]

    Recruiting

  23. May 2023 — Jun 2023 [monthly]

    Recruiting

  24. Apr 2023 — May 2023 [monthly]

    Recruiting

  25. Mar 2023 — Apr 2023 [monthly]

    Recruiting

  26. Feb 2023 — Mar 2023 [monthly]

    Recruiting

  27. Jan 2023 — Feb 2023 [monthly]

    Recruiting

  28. Dec 2022 — Jan 2023 [monthly]

    Recruiting

  29. Nov 2022 — Dec 2022 [monthly]

    Recruiting

  30. Oct 2022 — Nov 2022 [monthly]

    Recruiting

  31. Sep 2022 — Oct 2022 [monthly]

    Recruiting

  32. Jul 2022 — Sep 2022 [monthly]

    Recruiting

  33. Jun 2022 — Jul 2022 [monthly]

    Recruiting

  34. May 2022 — Jun 2022 [monthly]

    Recruiting

  35. Apr 2022 — May 2022 [monthly]

    Recruiting

  36. Mar 2022 — Apr 2022 [monthly]

    Recruiting

  37. Feb 2022 — Mar 2022 [monthly]

    Recruiting

  38. Jan 2022 — Feb 2022 [monthly]

    Recruiting

  39. Dec 2021 — Jan 2022 [monthly]

    Recruiting

  40. Nov 2021 — Dec 2021 [monthly]

    Recruiting

  41. Apr 2021 — Nov 2021 [monthly]

    Recruiting

  42. Jan 2021 — Apr 2021 [monthly]

    Recruiting

  43. Dec 2020 — Jan 2021 [monthly]

    Recruiting

  44. Apr 2020 — Dec 2020 [monthly]

    Recruiting

  45. Mar 2020 — Apr 2020 [monthly]

    Recruiting

  46. Feb 2020 — Mar 2020 [monthly]

    Recruiting

  47. Jan 2020 — Feb 2020 [monthly]

    Recruiting

  48. Dec 2019 — Jan 2020 [monthly]

    Recruiting

  49. Nov 2019 — Dec 2019 [monthly]

    Recruiting

  50. Oct 2019 — Nov 2019 [monthly]

    Recruiting

  51. Sep 2019 — Oct 2019 [monthly]

    Recruiting

  52. Aug 2019 — Sep 2019 [monthly]

    Recruiting

  53. Jul 2019 — Aug 2019 [monthly]

    Recruiting

  54. Jun 2019 — Jul 2019 [monthly]

    Recruiting

    First recorded

May 2019

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Institute on Aging (NIA)
Data source: National Institutes of Health Clinical Center (CC)

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

Study Locations