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NCT05900895 · ClinicalTrials.gov registry record · Phase 1

Estradiol Plus Olaparib for Breast Cancer (PHOEBE)

A Phase 1 study of Metastatic Breast Cancer, sponsored by Mary D Chamberlin.

Recruiting
Registry status
Phase 1
Development phase
6
Enrollment target
1
Study location

NCT05900895: Recruiting Phase 1 study of Metastatic Breast Cancer, sponsored by Mary D Chamberlin.

NCT05900895 is a Phase 1 study of Metastatic Breast Cancer that is actively recruiting participants, run by Mary D Chamberlin. The registered enrollment target is 6 participants, below the 205-participant average among 139 other Metastatic Breast Cancer trials with a reported enrollment target (97% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT05900895, a Phase 1 study of Metastatic Breast Cancer, is actively recruiting participants, sponsored by Mary D Chamberlin.

RECRUITING
Registry status
Phase 1
Development phase
6 participants
Enrollment target
1
Study location

Study Summary

Determine the safety and recommended Phase II dose of olaparib in combination with 17b-estradiol in post-menopausal patients with advanced ER+/HER2- breast cancer.

Primary Outcome

Determine the safety and recommended Phase II dose of olaparib in combination with 17b-estradiol in post-menopausal patients with advanced ER+/HER2- breast cancer.

Conditions Studied

Interventions

  • DRUG Olaparib
  • DRUG 17b-estradiol

Study Locations (1)

New Hampshire

  • Dartmouth Cancer Center - Lebanon

Trial Details

FieldValue
Enrollment Target 6 participants
Start Date 2024-07-15
Est. Completion 2028-12
Phase Phase 1
Mary D Chamberlin

1 total trials

What NCT05900895 shows while recruiting

NCT05900895 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 6 participants, a relatively small participant target, below the 205-participant average among 139 other Metastatic Breast Cancer trials with a reported enrollment target (97% lower).

The record links to 1 condition, with Metastatic Breast Cancer appearing as the primary indexed condition, and to 2 interventions - of which Olaparib is the first listed.

NCT05900895 reports a single indexed study location in New Hampshire.

Frequently Asked Questions

What is clinical trial NCT05900895 about?

NCT05900895 is a clinical study titled "Estradiol Plus Olaparib for Breast Cancer (PHOEBE)". Determine the safety and recommended Phase II dose of olaparib in combination with 17b-estradiol in post-menopausal patients with advanced ER+/HER2- breast cancer.

What is the current status of trial NCT05900895?

This trial is currently recruiting. It is a Phase 1 study. The enrollment target is 6 participants. The study started on 2024-07-15. Estimated completion is 2028-12.

What conditions does trial NCT05900895 study?

This clinical trial studies the following conditions: Metastatic Breast Cancer.

What interventions are being tested in trial NCT05900895?

The interventions under investigation include: Olaparib (DRUG), 17b-estradiol (DRUG).

Who is sponsoring clinical trial NCT05900895?

This trial is sponsored by Mary D Chamberlin, which has 1 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT05900895 being conducted?

This trial has 1 study location across New Hampshire. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Metastatic Breast Cancer

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT05900895's enrollment target sits among peer trials

6 139th of 139 the lowest of 139 other Metastatic Breast Cancer trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Metastatic Breast Cancer trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT05900895, the US trial registry maintained by the National Library of Medicine. NCT05900895 (small enrollment · single site footprint · recruiting) retrieved and formatted by PlainTrial, see methodology.