Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03616587 · ClinicalTrials.gov registry record · Phase 1

Study of AZD9833 Alone or in Combination in Women With Advanced Breast Cancer.

A Phase 1 study of ER+ HER2- Advanced Breast Cancer, sponsored by AstraZeneca.

Active
Registry status
Phase 1
Development phase
396
Enrollment target
17
Study locations

NCT03616587: Active Phase 1 study of ER+ HER2- Advanced Breast Cancer, sponsored by AstraZeneca.

NCT03616587 is a Phase 1 study of ER+ HER2- Advanced Breast Cancer that is active but no longer recruiting, run by AstraZeneca. The registered enrollment target is 396 participants, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (560% higher). The trial reports 17 study locations across 6 states. According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03616587, a Phase 1 study of ER+ HER2- Advanced Breast Cancer, is active but no longer recruiting, sponsored by AstraZeneca.

ACTIVE NOT RECRUITING
Registry status
Phase 1
Development phase
396 participants
Enrollment target
17
Study locations

Study Summary

A Phase 1 Dose Escalation and Expansion Study of AZD9833 Alone or in Combination in Women with ER Positive, HER2 Negative Advanced Breast Cancer (SERENA-1)

Primary Outcome

Dose-limiting toxicity as described in the protocol that is not related to disease progression, intercurrent illness or concomitant medications and that, despite optimal therapeutic intervention, meets protocol-defined criteria.

Interventions

  • DRUG AZD9833
  • DRUG AZD9833 with palbociclib
  • DRUG AZD9833 with everolimus

Study Locations (17)

Other

  • Research Site - Barcelona
  • Research Site - Barcelona
  • Research Site - Madrid
  • Research Site - Madrid
  • Research Site - Seville
  • Research Site - Valencia
  • Research Site - Cambridge
  • Research Site - Leeds
  • Research Site - London
  • Research Site - Manchester
  • Research Site - Sutton
  • Research Site - Sutton

Colorado

  • Research Site - Aurora

Florida

  • Research Site - Sarasota

Pennsylvania

  • Research Site - Philadelphia

Tennessee

  • Research Site - Nashville

Utah

  • Research Site - Salt Lake City

Trial Details

FieldValue
Enrollment Target 396 participants
Start Date 2018-10-11
Est. Completion 2027-06-24
Phase Phase 1
AstraZeneca

1,285 total trials

What the registry record for NCT03616587 still lists

NCT03616587 is an interventional study that assigns participants to a tested intervention. The registered 396 participants enrollment target is mid-sized for trials with a published cap, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (560% higher).

The record links to 1 condition, with ER+ HER2- Advanced Breast Cancer appearing as the primary indexed condition, and to 3 interventions - of which AZD9833 is the first listed.

NCT03616587 lists 17 locations in 6 states (Other, Colorado, Florida).

Frequently Asked Questions

What is clinical trial NCT03616587 about?

NCT03616587 is a clinical study titled "Study of AZD9833 Alone or in Combination in Women With Advanced Breast Cancer.". A Phase 1 Dose Escalation and Expansion Study of AZD9833 Alone or in Combination in Women with ER Positive, HER2 Negative Advanced Breast Cancer (SERENA-1)

What is the current status of trial NCT03616587?

This trial is currently active not recruiting. It is a Phase 1 study. The enrollment target is 396 participants. The study started on 2018-10-11. Estimated completion is 2027-06-24.

What conditions does trial NCT03616587 study?

This clinical trial studies the following conditions: ER+ HER2- Advanced Breast Cancer.

What interventions are being tested in trial NCT03616587?

The interventions under investigation include: AZD9833 (DRUG), AZD9833 with palbociclib (DRUG), AZD9833 with everolimus (DRUG).

Who is sponsoring clinical trial NCT03616587?

This trial is sponsored by AstraZeneca, which has 1,285 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT03616587 being conducted?

This trial has 17 study locations across Colorado, Florida, Pennsylvania, Tennessee, Utah. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for ER+ HER2- Advanced 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 NCT03616587's enrollment target sits among peer trials

396 77th of 2000 higher than 1,924 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 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

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT05633615 · 396 participants · Phase 2

    Testing Drug Treatments After CAR T-cell Therapy in Patients With Relapsed/Refractory Diffuse Large B-cell Lymphoma

  • NCT06227910 · 396 participants · Phase 3

    A Study of Vedolizumab With and Without Upadacitinib in Adults With Crohn's Disease

  • NCT06545331 · 396 participants · Phase 1

    Study of XB010 in Subjects With Solid Tumors

  • NCT06666790 · 396 participants · NA

    DermaSensor Postmarket Surveillance Study

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03616587, the US trial registry maintained by the National Library of Medicine. NCT03616587 (mid enrollment · multi site footprint · active not recruiting) retrieved and formatted by PlainTrial, see methodology.