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Clinical trialNCT04523857RecruitingPhase 2Interventional

ABemacicliB or Abemaciclib and HydroxYchloroquine to Target Minimal Residual Disease in Breast Cancer

SponsorAbramson Cancer Center at Penn MedicineEnrollment44Breast Cancer
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This is a Phase II randomized, controlled, open label breast cancer clinical trial. 66 patients will be enrolled. The drugs being studied are hydroxychloroquine (Plaquenil) and abemaciclib (also Verzenio). This research study is testing whether using these drugs to target the disseminated tumor cells in bone marrow can reduce their number or eliminate them. Both hydroxychloroquine and abemaciclib are pills that will be taken twice daily. Both are approved by the FDA
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Abramson Cancer Center of the University of Pennsylvania

    Philadelphia, Pennsylvania, United States

    Amy Clark, MD
    Recruiting

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

AbemaciclibHydroxychloroquine
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
1 Nov 2021
Primary completion
31 Dec 2027
Completion
31 Dec 2028
Last update posted
26 May 2026
Registered enrollment
44
Registry id
NCT04523857
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.