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Tirzepatide's Role in Postmenopausal HR+ Breast Cancer Survivors

RECRUITINGPhase 4Sponsored by Weill Medical College of Cornell University
Actively Recruiting
PhasePhase 4
SponsorWeill Medical College of Cornell University
Started2026-06-08
Est. completion2027-12-03
Eligibility
Age18 Years+
SexFEMALE
Healthy vol.Accepted
Locations1 site

Summary

This study will explore whether tirzepatide is a practical and acceptable treatment for postmenopausal females with a history of hormone receptor-positive breast cancer and obesity. The investigators aim to understand whether participants are willing and able to take this medication once weekly for 6 months and whether it may help improve weight and overall health. There will be monthly check-ins to monitor progress and safety. At the beginning and end of the study, participants will undergo body composition assessments, blood tests and a stool sample will be collected, and surveys will be completed.

Eligibility

Age: 18 Years+Sex: FEMALEHealthy volunteers accepted
Inclusion Criteria:

* Biologically female
* Age ≥ 18
* Obesity as defined by current BMI ≥ 30 kg/m²
* Postmenopausal as defined by one or more of the following

  * Age ≥60 years
  * Age \<60 years with amenorrhea for ≥ 1 year
  * Documented bilateral surgical oophorectomy
  * Chemical menopause with the addition of LHRH agonists at least 12 weeks prior to enrolment, and plan to remain on LHRH agonists throughout the trial
* HR+ (ER and/or PR) stage 0-III breast cancer
* Completed curative treatment (surgery, chemotherapy, radiotherapy) at least 12 weeks prior to enrolment
* Insurance approval for tirzepatide or willing to pay out of pocket
* Willing to provide informed consent and comply with study procedures

Exclusion Criteria:

* Stage IV breast cancer
* Concomitant use of CDK inhibitors
* Concomitant use of antiHER2 therapy
* The PI may be consulted regarding enrollment of females receiving other endocrine therapy medications
* Other active malignancy requiring treatment
* Enrollment in another investigational clinical trial
* Contraindication to tirzepatide
* Treatment with a GLP-1 receptor agonist within the last 3 months
* Diabetes requiring insulin
* Any disorder, unwillingness, or inability, not covered by any of the other exclusion criteria, which in the investigator's opinion, might jeopardize the subject's safety or compliance with the protocol

Conditions3

Breast CancerCancerObesity (Disorder)

Interventions1

Locations1 site

Weill Cornell Medicine
Sarah Schmitz, MD646-962-2111hls9007@med.cornell.edu

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Trial data from ClinicalTrials.gov. Trial status and eligibility can change — verify directly with the study contact or on ClinicalTrials.gov.

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