Weight-Loss drug tested before prostate surgery in new pilot study
NCT ID NCT06759701
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-phase study tests whether a weight-loss drug called tirzepatide can help overweight or obese men with intermediate-risk prostate cancer lose weight before their prostate removal surgery. The study will enroll 30 participants and focus on safety and how well the program works. It is not a cure for cancer, but aims to improve surgical outcomes by reducing weight.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Male participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Histologically confirmed adenocarcinoma of the prostate that is localized (no metastatic lesions or concerning lymph nodes 1cm or greater) based on prostate MRI and meets NCCN intermediate risk criteria (as follows): * Clinical T2b-T2c or lower disease * Gleason Grade group 2 or 3 on biopsy * PSA ≤20 ng/mL * Desires radical prostatectomy (open or robotic) for prostate cancer management and is a surgical candidate as determined by the treating urologic oncologist * Adult men \>30 and \< 75 years old * Currently diagnosed with Diabetes Mellitus and meet one of the following criteria for overweight or obesity: * Body Mass Index (BMI) greater than or equal to 27 kg/m2 * Waist circumference (\> 40 inches) -or- * Currently have a BMI greater or equal to 30 kg/m2 -or- * Currently have a BMI greater or equal to 27 kg/m2 with at least one weight-related condition, defined as one or more of the following: * Hypertension: treated or with systolic blood pressure (SBP) ≥130 mmHg or diastolic blood pressure ≥80 mmHg * Dyslipidemia: treated or with low-density lipoprotein (LDL) ≥160 mg/dL (4.1 mmol/L) or triglycerides ≥150 mg/dL (1.7 mmol/L), or high-density lipoprotein (HDL) \<40mg/dL (1.0 mmol/L) * Obstructive sleep apnea * Cardiovascular disease (for example, ischemic cardiovascular disease, New York Heart Association (NYHA) Functional Class I-III heart failure) Exclusion Criteria: * Prostate cancer that meets factors as part of NCCN high and very high-risk criteria (as follows): * pT3a or higher disease * Grade group 4 or 5 adenocarcinoma of prostate * Presence of metastatic disease on imaging * A history of intentional or unintentional weight loss of more than 5kg within 90 days of screening * Any prior androgen deprivation, chemotherapy, surgery, or radiation for PCa * Previous or planned surgical treatment for obesity or use of a medication that promotes weight loss within 90 days before screening * Have renal impairment measured as estimated glomerular filtration rate (eGFR) \<30 as determine using standard MD Anderson laboratory measures * Have a known clinically significant gastric emptying abnormality (for example, severe diabetic gastroparesis or gastric outlet obstruction) or chronically take drugs that directly affect GI motility * Have had a history of chronic or acute pancreatitis * Have a history of significant active or unstable Major Depressive Disorder (MDD) or other severe psychiatric disorder (for example, schizophrenia, bipolar disorder, or other serious mood or anxiety disorder) within the last 2 years * Note: Patients with MDD or generalized anxiety disorder whose disease state is considered stable and expected to remain stable throughout the course of the study, in the opinion of the investigator, may be considered for inclusion if they are not on excluded medications * Have any of the following cardiovascular conditions within 3 months prior to study enrollment: acute myocardial infarction (MI), cerebrovascular accident (stroke), unstable angina, or hospitalization due to congestive heart failure (CHF) * Have NYHA Functional Classification IV CHF * Have acute or chronic hepatitis, signs, and symptoms of any other liver disease other than nonalcoholic fatty liver disease, or any of the following, as determined by the central laboratory during screening: - alanine aminotransferase (ALT) level \>3.0X the upper limit of normal (ULN) for the reference range or - alkaline phosphatase (ALP) level \>1.5X the ULN for the reference range or - total bilirubin level \>1.2X the ULN for the reference range (except for cases of known Gilbert's Syndrome) Note: Participants with nonalcoholic fatty liver disease are eligible to participate in this trial if their ALT level is ≤3.0X the ULN for the reference range * Have a family or personal history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia (MEN) Syndrome type 2 * Have a history of an active or untreated malignancy or are in remission from a clinically significant malignancy (other than basal- or squamous-cell skin cancer, in situ carcinomas of the cervix), other than prostate cancer, for less than 5 years * Have any other condition not listed in this section (for example, hypersensitivity or intolerance) that is a contraindication to GLP-1R agonists * Have a history of any other condition (such as known drug or alcohol abuse, diagnosed eating disorder, or other psychiatric disorder) that, in the opinion of the investigator, may preclude the participant from following and completing the protocol * Have history of use of marijuana within 3 months of enrollment and unwillingness to abstain from marijuana use during the trial. Participants should also refrain from use of cannabidiol oil for the duration of the study * Have had a transplanted organ (corneal transplants \[keratoplasty\] allowed) or awaiting an organ transplant.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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The University of Texas M. D. Anderson Cancer Center
RECRUITINGHouston, Texas, 77030, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- New PET tracer aims to light up hidden cancer targets
- Can daily adaptive radiotherapy spare healthy tissue in prostate cancer?
- Can a radioactive tracer and MRI reveal prostate Cancer's true extent?
- New pill takes aim at blood sugar in diabetes
- Home c-peptide tests could reveal hidden insulin production in diabetes