deltatrials
Completed OBSERVATIONAL NCT05345561

Study to Assess the Occurrence of HPA-1a Alloimmunization in Women With Higher Risk for Fetal and Neonatal Alloimmune Thrombocytopenia

A Prospective, Natural History Study to Assess the Occurrence of HPA-1a Alloimmunization in Women Identified at Higher Risk for Fetal and Neonatal Alloimmune Thrombocytopenia (FNAIT)

Sponsor: Rallybio

Updated 13 times since 2022 Last updated: Mar 4, 2026 Started: Mar 14, 2022 Primary completion: Jan 31, 2025 Completion: Oct 10, 2025
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT05345561, this observational or N/A phase trial focuses on Fetal and Neonatal Alloimmune Thrombocytopenia and remains completed. Sponsored by Rallybio, it has been updated 13 times since 2022, reflecting substantial change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

~May 2022 – ~Sep 2022 · 4 months · monthly snapshot~Sep 2022 – ~Apr 2023 · 7 months · monthly snapshot~Apr 2023 – ~Aug 2023 · 4 months · monthly snapshot~Aug 2023 – ~Jan 2024 · 5 months · monthly snapshot~Jan 2024 – ~May 2024 · 4 months · monthly snapshot~May 2024 – ~Jul 2024 · 2 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Feb 2025 · 5 months · monthly snapshot~Feb 2025 – ~Mar 2025 · 28 days · monthly snapshot~Mar 2025 – ~Jul 2025 · 4 months · monthly snapshot~Jul 2025 – ~Dec 2025 · 5 months · monthly snapshot~Dec 2025 – ~Mar 2026 · 3 months · monthly snapshot~Mar 2026 – present · 5 months · monthly snapshot

Change History

13 versions recorded
  1. Mar 2026 — Present [monthly]

    Completed

  2. Dec 2025 — Mar 2026 [monthly]

    Completed

    Status: Active Not RecruitingCompleted

  3. Jul 2025 — Dec 2025 [monthly]

    Active Not Recruiting

  4. Mar 2025 — Jul 2025 [monthly]

    Active Not Recruiting

    Status: RecruitingActive Not Recruiting

  5. Feb 2025 — Mar 2025 [monthly]

    Recruiting

Show 8 earlier versions
  1. Sep 2024 — Feb 2025 [monthly]

    Recruiting

  2. Jul 2024 — Sep 2024 [monthly]

    Recruiting

  3. May 2024 — Jul 2024 [monthly]

    Recruiting

  4. Jan 2024 — May 2024 [monthly]

    Recruiting

  5. Aug 2023 — Jan 2024 [monthly]

    Recruiting

  6. Apr 2023 — Aug 2023 [monthly]

    Recruiting

  7. Sep 2022 — Apr 2023 [monthly]

    Recruiting

  8. May 2022 — Sep 2022 [monthly]

    Recruiting

    First recorded

Mar 2022

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Rallybio
Data source: Rallybio

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