deltatrials
Completed NA INTERVENTIONAL 2-arm NCT03986268

Vitamin D Can Increase Pathological Response of the Breast Cancer Patients Treated With Neoadjuvant Therapy

The Effect of Vitamin D Replacement Therapy on Pathological Response in Breast Cancer Patients Treated With Neoadjuvant Therapy

Sponsor: Florence Nightingale Hospital, Istanbul

Interventions Vit D
Updated 8 times since 2019 Last updated: Feb 21, 2024 Started: May 10, 2019 Primary completion: Dec 10, 2020 Completion: Dec 10, 2020
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This NA trial investigates Chemotherapy Effect and Pathology and is currently completed. Florence Nightingale Hospital, Istanbul leads this study, which shows 8 recorded versions since 2019 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

~Jul 2019 – ~Aug 2020 · 13 months · monthly snapshotRecruiting~Aug 2020 – ~Jan 2021 · 5 months · monthly snapshotRecruiting~Jan 2021 – ~Sep 2022 · 20 months · monthly snapshotRecruiting~Sep 2022 – ~Mar 2024 · 18 months · monthly snapshotUnknown Status~Mar 2024 – ~Jul 2024 · 4 months · monthly snapshotCompleted~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshotCompleted~Sep 2024 – ~Sep 2025 · 12 months · monthly snapshotCompleted~Sep 2025 – present · 10 months · monthly snapshotCompleted

Change History

8 versions recorded
  1. Sep 2025 — Present [monthly]

    Completed NA

  2. Sep 2024 — Sep 2025 [monthly]

    Completed NA

  3. Jul 2024 — Sep 2024 [monthly]

    Completed NA

  4. Mar 2024 — Jul 2024 [monthly]

    Completed NA

    Status: Unknown StatusCompleted

  5. Sep 2022 — Mar 2024 [monthly]

    Unknown Status NA

    Status: RecruitingUnknown Status

Show 3 earlier versions
  1. Jan 2021 — Sep 2022 [monthly]

    Recruiting NA

  2. Aug 2020 — Jan 2021 [monthly]

    Recruiting NA

  3. Jul 2019 — Aug 2020 [monthly]

    Recruiting NA

    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:
  • Florence Nightingale Hospital, Istanbul
Data source: Florence Nightingale Hospital, Istanbul

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

Study Locations