NCT05241860

Brief Summary

This phase II trial examines antiandrogen therapy interruptions in patients with hormone-sensitive prostate cancer that has spread to other places in the body (metastatic) responding exceptionally well to androgen receptor-pathway inhibitor therapy. The usual treatment for patients with metastatic prostate cancer is to receive hormonal medications including a medication to decrease testosterone levels in the body and a potent oral hormonal medication to block growth signals from male hormones (like testosterone) in the cancer cells. Patients whose cancer is responding exceptionally well to this therapy may take a break from these medications according to their doctor's guidance. This trial may help doctors determine if stopping treatment can allow for testosterone recovery.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
79

participants targeted

Target at P50-P75 for phase_2

Timeline
89mo left

Started Nov 2022

Longer than P75 for phase_2

Geographic Reach
1 country

326 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress32%
Nov 2022Sep 2033

First Submitted

Initial submission to the registry

January 31, 2022

Completed
16 days until next milestone

First Posted

Study publicly available on registry

February 16, 2022

Completed
9 months until next milestone

Study Start

First participant enrolled

November 21, 2022

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 29, 2025

Completed
7.9 years until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2033

Expected
Last Updated

December 22, 2025

Status Verified

December 1, 2025

Enrollment Period

2.9 years

First QC Date

January 31, 2022

Last Update Submit

December 18, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Treatment-free with eugonadal testosterone (> 150 ng/dl)

    The proportion of men who experience 18-month treatment-free interval from therapy with eugonadal testosterone (to \>= 150 ng/ml) after treatment interruption will be calculated for the study cohort.

    At 18 months

Secondary Outcomes (8)

  • Time to eugonadal testosterone

    Up to 10 years

  • Duration off-treatment

    Up to 10 years

  • Radiographic progression-free survival

    Up to 10 years

  • Time to next treatment

    Up to 24 months

  • Overall survival

    Assessed up to 10 years

  • +3 more secondary outcomes

Study Arms (1)

Treatment (discontinue hormonal medication, follow up)

EXPERIMENTAL

Patients stop both hormonal medications (medication to decrease testosterone levels in the body and potent oral hormonal medication to block growth signals from male hormones in the cancer cells). Patients are then followed every 12 months for symptoms. Patients with an increase in PSA level to greater than or equal to 5 ng/ml, changes on imaging studies suggesting that their cancer is growing back, or symptoms that the doctor thinks is related to their cancer growing back, resume both hormonal treatments.

Other: Pharmacotherapy DiscontinuationOther: Follow-UpOther: Questionnaire AdministrationOther: Quality-of-Life Assessment

Interventions

Stop hormonal medications (Abiraterone, Enzalutamide, Apalutamide, Leuprolide, Goserelin, Degarelix, Relugolix)

Also known as: Medication Discontinuation
Treatment (discontinue hormonal medication, follow up)

Undergo follow-up

Treatment (discontinue hormonal medication, follow up)

Ancillary studies

Treatment (discontinue hormonal medication, follow up)

Ancillary studies

Treatment (discontinue hormonal medication, follow up)

Eligibility Criteria

Age18 Years+
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Histologic or clinical diagnosis of metastatic prostate cancer
  • Must have had evidence of metastatic disease by bone scan, or nodal or visceral lesions on computed tomography (CT) or magnetic resonance imaging (MRI) prior to starting on intense antiandrogen therapy (ADT)
  • Radiographic evidence of disease is not required at the time of enrollment
  • No metastases to liver or to brain, as these represent aggressive variant disease biology for which intermittent treatment may not be favored
  • Must currently be receiving intense ADT for metastatic hormone sensitive prostate cancer (mHSPC)
  • Testosterone suppression (TS) with luteinizing hormone releasing hormone (LHRH)-agonist or LHRH-antagonist AND
  • An approved secondary androgen receptor pathway inhibitor (ARPI) abiraterone, enzalutamide, or apalutamide (or darolutamide if approved for this indication)
  • Must have remained on testosterone suppression for metastatic disease continuously (without treatment breaks) for 540-750 days (approximately 18 to 24 months) from time of first dose of LHRH agonist or antagonist by time of registration. A period of anti-androgen treatment prior to LHRH agonist or antagonist initiation is not included in the 540 - 750 days (approximately 18 to 24 months)
  • Must have received treatment with ARPI for at least 360 days in total by time of A032101 registration. Treatment breaks from ARPI of up to 28 days are permitted (for example peri-procedural or for management of a temporary adverse event) as long as PSA did not rise while holding therapy
  • Prior TS in the context of neoadjuvant/concurrent/adjuvant treatment with local therapy is permitted. Prior course(s) of intermittent TS for biochemical-only recurrence is permitted. However, if the patient previously received TS, metastatic progression for which intense ADT was initiated must have occurred during an off-treatment interval and with testosterone \>= 150 ng/dL
  • Prior local therapy for prostate cancer (either before or after diagnosis of metastatic disease) is permitted. Prior treatment with docetaxel chemotherapy for up to 6 cycles is permitted. Prior radiation therapy to metastatic sites (either for symptom palliation or for ablation of oligometastatic disease) is permitted

You may not qualify if:

  • No history of surgical castration
  • No history of ARPI use prior to diagnosis of mHSPC for which the patient is currently receiving intense ADT (such as in the neoadjuvant setting with prior local therapy)
  • No current or prior treatment with experimental agents for metastatic hormone-sensitive prostate cancer
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-2
  • Prior to initiating intense ADT
  • Prostate specific antigen (PSA) \>= 5 ng/ml
  • Testosterone \>= 150 ng/dl. Patients are permitted to enroll if testosterone was not measured prior to initiating intense ADT for mHSPC if they did not previously receive TS and were not known or suspected to be hypogonadal at the time
  • At time of enrollment to A032101
  • PSA \< 0.2 ng/ml
  • \*\* PSA values (measured in the same laboratory) must be stable or falling for 3 consecutive measurements - i.e. any PSA rise must be followed by a decrease in PSA that is further decreased or stable on a 3rd measurement. Any patient with 2 consecutive rises in PSA values since achieving castrate level of testosterone is not eligible
  • Testosterone \< 50 ng/dl
  • No current participation in a clinical study that does not allow for TS or ARPI interruption
  • No patients with a "currently active" second malignancy \* Patients with non-melanomatous skin cancer, superficial bladder cancer, cancer not needing active therapy for at least 2 years, cancer for which the treating investigator deems the subject

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (326)

Cancer Center at Saint Joseph's

Phoenix, Arizona, 85004, United States

Location

Mercy Hospital Fort Smith

Fort Smith, Arkansas, 72903, United States

Location

CARTI Cancer Center

Little Rock, Arkansas, 72205, United States

Location

Mission Hope Medical Oncology - Arroyo Grande

Arroyo Grande, California, 93420, United States

Location

Mercy Cancer Center �� Carmichael

Carmichael, California, 95608, United States

Location

Mercy San Juan Medical Center

Carmichael, California, 95608, United States

Location

Epic Care-Dublin

Dublin, California, 94568, United States

Location

Mercy Cancer Center - Elk Grove

Elk Grove, California, 95758, United States

Location

Bay Area Breast Surgeons Inc

Emeryville, California, 94608, United States

Location

Epic Care Partners in Cancer Care

Emeryville, California, 94608, United States

Location

Contra Costa Regional Medical Center

Martinez, California, 94553-3156, United States

Location

Mercy UC Davis Cancer Center

Merced, California, 95340, United States

Location

Bay Area Tumor Institute

Oakland, California, 94609, United States

Location

UC Irvine Health/Chao Family Comprehensive Cancer Center

Orange, California, 92868, United States

Location

Eisenhower Medical Center

Rancho Mirage, California, 92270, United States

Location

Mercy Cancer Center - Rocklin

Rocklin, California, 95765, United States

Location

Mercy Cancer Center - Sacramento

Sacramento, California, 95816, United States

Location

Pacific Central Coast Health Center-San Luis Obispo

San Luis Obispo, California, 93401, United States

Location

Mission Hope Medical Oncology - Santa Maria

Santa Maria, California, 93444, United States

Location

Epic Care Cyberknife Center

Walnut Creek, California, 94597, United States

Location

Woodland Memorial Hospital

Woodland, California, 95695, United States

Location

Rocky Mountain Regional VA Medical Center

Aurora, Colorado, 80045, United States

Location

Penrose-Saint Francis Healthcare

Colorado Springs, Colorado, 80907, United States

Location

Rocky Mountain Cancer Centers-Penrose

Colorado Springs, Colorado, 80907, United States

Location

Saint Francis Cancer Center

Colorado Springs, Colorado, 80923, United States

Location

Porter Adventist Hospital

Denver, Colorado, 80210, United States

Location

Mercy Medical Center

Durango, Colorado, 81301, United States

Location

Southwest Oncology PC

Durango, Colorado, 81301, United States

Location

Saint Anthony Hospital

Lakewood, Colorado, 80228, United States

Location

Littleton Adventist Hospital

Littleton, Colorado, 80122, United States

Location

Longmont United Hospital

Longmont, Colorado, 80501, United States

Location

Parker Adventist Hospital

Parker, Colorado, 80138, United States

Location

Saint Mary Corwin Medical Center

Pueblo, Colorado, 81004, United States

Location

UM Sylvester Comprehensive Cancer Center at Aventura

Aventura, Florida, 33180, United States

Location

UM Sylvester Comprehensive Cancer Center at Coral Gables

Coral Gables, Florida, 33146, United States

Location

UM Sylvester Comprehensive Cancer Center at Deerfield Beach

Deerfield Beach, Florida, 33442, United States

Location

University of Miami Miller School of Medicine-Sylvester Cancer Center

Miami, Florida, 33136, United States

Location

UM Sylvester Comprehensive Cancer Center at Kendall

Miami, Florida, 33176, United States

Location

UM Sylvester Comprehensive Cancer Center at Plantation

Plantation, Florida, 33324, United States

Location

Saint Alphonsus Cancer Care Center-Boise

Boise, Idaho, 83706, United States

Location

Saint Alphonsus Cancer Care Center-Caldwell

Caldwell, Idaho, 83605, United States

Location

Kootenai Health - Coeur d'Alene

Coeur d'Alene, Idaho, 83814, United States

Location

Walter Knox Memorial Hospital

Emmett, Idaho, 83617, United States

Location

Idaho Urologic Institute-Meridian

Meridian, Idaho, 83642, United States

Location

Saint Alphonsus Cancer Care Center-Nampa

Nampa, Idaho, 83687, United States

Location

Kootenai Clinic Cancer Services - Post Falls

Post Falls, Idaho, 83854, United States

Location

Kootenai Cancer Clinic

Sandpoint, Idaho, 83864, United States

Location

Saint Anthony's Health

Alton, Illinois, 62002, United States

Location

Illinois CancerCare-Bloomington

Bloomington, Illinois, 61704, United States

Location

Illinois CancerCare-Canton

Canton, Illinois, 61520, United States

Location

Memorial Hospital of Carbondale

Carbondale, Illinois, 62902, United States

Location

SIH Cancer Institute

Carterville, Illinois, 62918, United States

Location

Illinois CancerCare-Carthage

Carthage, Illinois, 62321, United States

Location

Centralia Oncology Clinic

Centralia, Illinois, 62801, United States

Location

Saint Mary's Hospital

Centralia, Illinois, 62801, United States

Location

Northwestern University

Chicago, Illinois, 60611, United States

Location

University of Chicago Comprehensive Cancer Center

Chicago, Illinois, 60637, United States

Location

Cancer Care Specialists of Illinois - Decatur

Decatur, Illinois, 62526, United States

Location

Decatur Memorial Hospital

Decatur, Illinois, 62526, United States

Location

Northwestern Medicine Cancer Center Kishwaukee

DeKalb, Illinois, 60115, United States

Location

Illinois CancerCare-Dixon

Dixon, Illinois, 61021, United States

Location

Crossroads Cancer Center

Effingham, Illinois, 62401, United States

Location

Illinois CancerCare-Eureka

Eureka, Illinois, 61530, United States

Location

Illinois CancerCare-Galesburg

Galesburg, Illinois, 61401, United States

Location

Western Illinois Cancer Treatment Center

Galesburg, Illinois, 61401, United States

Location

Northwestern Medicine Cancer Center Delnor

Geneva, Illinois, 60134, United States

Location

Ingalls Memorial Hospital

Harvey, Illinois, 60426, United States

Location

Illinois CancerCare-Kewanee Clinic

Kewanee, Illinois, 61443, United States

Location

Northwestern Medicine Lake Forest Hospital

Lake Forest, Illinois, 60045, United States

Location

Illinois CancerCare-Macomb

Macomb, Illinois, 61455, United States

Location

Good Samaritan Regional Health Center

Mount Vernon, Illinois, 62864, United States

Location

UC Comprehensive Cancer Center at Silver Cross

New Lenox, Illinois, 60451, United States

Location

Cancer Care Center of O'Fallon

O'Fallon, Illinois, 62269, United States

Location

HSHS Saint Elizabeth's Hospital

O'Fallon, Illinois, 62269, United States

Location

Northwestern Medicine Orland Park

Orland Park, Illinois, 60462, United States

Location

University of Chicago Medicine-Orland Park

Orland Park, Illinois, 60462, United States

Location

Illinois CancerCare-Ottawa Clinic

Ottawa, Illinois, 61350, United States

Location

Illinois CancerCare-Pekin

Pekin, Illinois, 61554, United States

Location

OSF Saint Francis Radiation Oncology at Pekin Cancer Treatment Center

Pekin, Illinois, 61554, United States

Location

Illinois CancerCare-Peoria

Peoria, Illinois, 61615, United States

Location

OSF Saint Francis Radiation Oncology at Peoria Cancer Center

Peoria, Illinois, 61615, United States

Location

Methodist Medical Center of Illinois

Peoria, Illinois, 61636, United States

Location

OSF Saint Francis Medical Center

Peoria, Illinois, 61637, United States

Location

Illinois CancerCare-Peru

Peru, Illinois, 61354, United States

Location

Valley Radiation Oncology

Peru, Illinois, 61354, United States

Location

Illinois CancerCare-Princeton

Princeton, Illinois, 61356, United States

Location

Memorial Hospital East

Shiloh, Illinois, 62269, United States

Location

Southern Illinois University School of Medicine

Springfield, Illinois, 62702, United States

Location

Springfield Clinic

Springfield, Illinois, 62702, United States

Location

Memorial Medical Center

Springfield, Illinois, 62781, United States

Location

Northwestern Medicine Cancer Center Warrenville

Warrenville, Illinois, 60555, United States

Location

Illinois CancerCare - Washington

Washington, Illinois, 61571, United States

Location

Reid Health

Richmond, Indiana, 47374, United States

Location

Mary Greeley Medical Center

Ames, Iowa, 50010, United States

Location

McFarland Clinic - Ames

Ames, Iowa, 50010, United States

Location

McFarland Clinic - Boone

Boone, Iowa, 50036, United States

Location

Medical Oncology and Hematology Associates-West Des Moines

Clive, Iowa, 50325, United States

Location

Mercy Cancer Center-West Lakes

Clive, Iowa, 50325, United States

Location

Alegent Health Mercy Hospital

Council Bluffs, Iowa, 51503, United States

Location

Greater Regional Medical Center

Creston, Iowa, 50801, United States

Location

Mercy Medical Center - Des Moines

Des Moines, Iowa, 50314, United States

Location

Mission Cancer and Blood - Laurel

Des Moines, Iowa, 50314, United States

Location

McFarland Clinic - Trinity Cancer Center

Fort Dodge, Iowa, 50501, United States

Location

McFarland Clinic - Jefferson

Jefferson, Iowa, 50129, United States

Location

McFarland Clinic - Marshalltown

Marshalltown, Iowa, 50158, United States

Location

Mercy Medical Center-West Lakes

West Des Moines, Iowa, 50266, United States

Location

Central Care Cancer Center - Garden City

Garden City, Kansas, 67846, United States

Location

Central Care Cancer Center - Great Bend

Great Bend, Kansas, 67530, United States

Location

Flaget Memorial Hospital

Bardstown, Kentucky, 40004, United States

Location

Commonwealth Cancer Center-Corbin

Corbin, Kentucky, 40701, United States

Location

Saint Joseph Hospital

Lexington, Kentucky, 40504, United States

Location

Saint Joseph Radiation Oncology Resource Center

Lexington, Kentucky, 40504, United States

Location

Saint Joseph Hospital East

Lexington, Kentucky, 40509, United States

Location

Saint Joseph London

London, Kentucky, 40741, United States

Location

Saint Joseph Mount Sterling

Mount Sterling, Kentucky, 40353, United States

Location

Dana-Farber Cancer Institute

Boston, Massachusetts, 02215, United States

Location

Dana-Farber Cancer Institute at Foxborough

Foxborough, Massachusetts, 02035, United States

Location

Dana-Farber/Brigham and Women's Cancer Center at Milford Regional

Milford, Massachusetts, 01757, United States

Location

Dana-Farber/Brigham and Women's Cancer Center at South Shore

South Weymouth, Massachusetts, 02190, United States

Location

UMass Memorial Medical Center - University Campus

Worcester, Massachusetts, 01655, United States

Location

Hickman Cancer Center

Adrian, Michigan, 49221, United States

Location

Saint Joseph Mercy Hospital

Ann Arbor, Michigan, 48106, United States

Location

University of Michigan Comprehensive Cancer Center

Ann Arbor, Michigan, 48109, United States

Location

Saint Joseph Mercy Brighton

Brighton, Michigan, 48114, United States

Location

Trinity Health IHA Medical Group Hematology Oncology - Brighton

Brighton, Michigan, 48114, United States

Location

University of Michigan - Brighton Center for Specialty Care

Brighton, Michigan, 48116, United States

Location

Saint Joseph Mercy Canton

Canton, Michigan, 48188, United States

Location

Trinity Health IHA Medical Group Hematology Oncology - Canton

Canton, Michigan, 48188, United States

Location

Caro Cancer Center

Caro, Michigan, 48723, United States

Location

Saint Joseph Mercy Chelsea

Chelsea, Michigan, 48118, United States

Location

Trinity Health IHA Medical Group Hematology Oncology - Chelsea Hospital

Chelsea, Michigan, 48118, United States

Location

Hematology Oncology Consultants-Clarkston

Clarkston, Michigan, 48346, United States

Location

Newland Medical Associates-Clarkston

Clarkston, Michigan, 48346, United States

Location

Ascension Saint John Hospital

Detroit, Michigan, 48236, United States

Location

Great Lakes Cancer Management Specialists-Doctors Park

East China Township, Michigan, 48054, United States

Location

Genesee Cancer and Blood Disease Treatment Center

Flint, Michigan, 48503, United States

Location

Genesee Hematology Oncology PC

Flint, Michigan, 48503, United States

Location

Genesys Hurley Cancer Institute

Flint, Michigan, 48503, United States

Location

Hurley Medical Center

Flint, Michigan, 48503, United States

Location

Academic Hematology Oncology Specialists

Grosse Pointe Woods, Michigan, 48236, United States

Location

Great Lakes Cancer Management Specialists-Van Elslander Cancer Center

Grosse Pointe Woods, Michigan, 48236, United States

Location

Michigan Breast Specialists-Grosse Pointe Woods

Grosse Pointe Woods, Michigan, 48236, United States

Location

University of Michigan Health - Sparrow Lansing

Lansing, Michigan, 48912, United States

Location

Trinity Health Saint Mary Mercy Livonia Hospital

Livonia, Michigan, 48154, United States

Location

Great Lakes Cancer Management Specialists-Macomb Medical Campus

Macomb, Michigan, 48044, United States

Location

Michigan Breast Specialists-Macomb Township

Macomb, Michigan, 48044, United States

Location

Saint Mary's Oncology/Hematology Associates of Marlette

Marlette, Michigan, 48453, United States

Location

Toledo Clinic Cancer Centers-Monroe

Monroe, Michigan, 48162, United States

Location

21st Century Oncology-Pontiac

Pontiac, Michigan, 48341, United States

Location

Hope Cancer Center

Pontiac, Michigan, 48341, United States

Location

Newland Medical Associates-Pontiac

Pontiac, Michigan, 48341, United States

Location

Saint Joseph Mercy Oakland

Pontiac, Michigan, 48341, United States

Location

Ascension Saint Mary's Hospital

Saginaw, Michigan, 48601, United States

Location

Oncology Hematology Associates of Saginaw Valley PC

Saginaw, Michigan, 48604, United States

Location

Bhadresh Nayak MD PC-Sterling Heights

Sterling Heights, Michigan, 48312, United States

Location

Ascension Saint Joseph Hospital

Tawas City, Michigan, 48764, United States

Location

Advanced Breast Care Center PLLC

Warren, Michigan, 48088, United States

Location

Great Lakes Cancer Management Specialists-Macomb Professional Building

Warren, Michigan, 48093, United States

Location

Macomb Hematology Oncology PC

Warren, Michigan, 48093, United States

Location

Michigan Breast Specialists-Warren

Warren, Michigan, 48093, United States

Location

Saint John Macomb-Oakland Hospital

Warren, Michigan, 48093, United States

Location

Saint Mary's Oncology/Hematology Associates of West Branch

West Branch, Michigan, 48661, United States

Location

Huron Gastroenterology PC

Ypsilanti, Michigan, 48106, United States

Location

Trinity Health IHA Medical Group Hematology Oncology Ann Arbor Campus

Ypsilanti, Michigan, 48197, United States

Location

Sanford Joe Lueken Cancer Center

Bemidji, Minnesota, 56601, United States

Location

Fairview Ridges Hospital

Burnsville, Minnesota, 55337, United States

Location

Minnesota Oncology - Burnsville

Burnsville, Minnesota, 55337, United States

Location

Cambridge Medical Center

Cambridge, Minnesota, 55008, United States

Location

Mercy Hospital

Coon Rapids, Minnesota, 55433, United States

Location

Fairview Southdale Hospital

Edina, Minnesota, 55435, United States

Location

Unity Hospital

Fridley, Minnesota, 55432, United States

Location

Fairview Clinics and Surgery Center Maple Grove

Maple Grove, Minnesota, 55369, United States

Location

Minnesota Oncology Hematology PA-Maplewood

Maplewood, Minnesota, 55109, United States

Location

Saint John's Hospital - Healtheast

Maplewood, Minnesota, 55109, United States

Location

Abbott-Northwestern Hospital

Minneapolis, Minnesota, 55407, United States

Location

Hennepin County Medical Center

Minneapolis, Minnesota, 55415, United States

Location

Health Partners Inc

Minneapolis, Minnesota, 55454, United States

Location

Monticello Cancer Center

Monticello, Minnesota, 55362, United States

Location

New Ulm Medical Center

New Ulm, Minnesota, 56073, United States

Location

Fairview Northland Medical Center

Princeton, Minnesota, 55371, United States

Location

North Memorial Medical Health Center

Robbinsdale, Minnesota, 55422, United States

Location

Park Nicollet Clinic - Saint Louis Park

Saint Louis Park, Minnesota, 55416, United States

Location

Regions Hospital

Saint Paul, Minnesota, 55101, United States

Location

United Hospital

Saint Paul, Minnesota, 55102, United States

Location

Saint Francis Regional Medical Center

Shakopee, Minnesota, 55379, United States

Location

Lakeview Hospital

Stillwater, Minnesota, 55082, United States

Location

Sanford Thief River Falls Medical Center

Thief River Falls, Minnesota, 56701, United States

Location

Ridgeview Medical Center

Waconia, Minnesota, 55387, United States

Location

Rice Memorial Hospital

Willmar, Minnesota, 56201, United States

Location

Minnesota Oncology Hematology PA-Woodbury

Woodbury, Minnesota, 55125, United States

Location

Sanford Cancer Center Worthington

Worthington, Minnesota, 56187, United States

Location

Fairview Lakes Medical Center

Wyoming, Minnesota, 55092, United States

Location

Saint Louis Cancer and Breast Institute-Ballwin

Ballwin, Missouri, 63011, United States

Location

Central Care Cancer Center - Bolivar

Bolivar, Missouri, 65613, United States

Location

Cox Cancer Center Branson

Branson, Missouri, 65616, United States

Location

Saint Francis Medical Center

Cape Girardeau, Missouri, 63703, United States

Location

Southeast Cancer Center

Cape Girardeau, Missouri, 63703, United States

Location

Siteman Cancer Center at Saint Peters Hospital

City of Saint Peters, Missouri, 63376, United States

Location

Siteman Cancer Center at West County Hospital

Creve Coeur, Missouri, 63141, United States

Location

Parkland Health Center - Farmington

Farmington, Missouri, 63640, United States

Location

Capital Region Southwest Campus

Jefferson City, Missouri, 65109, United States

Location

Freeman Health System

Joplin, Missouri, 64804, United States

Location

Mercy Hospital Joplin

Joplin, Missouri, 64804, United States

Location

Lake Regional Hospital

Osage Beach, Missouri, 65065, United States

Location

Delbert Day Cancer Institute at PCRMC

Rolla, Missouri, 65401, United States

Location

Mercy Clinic-Rolla-Cancer and Hematology

Rolla, Missouri, 65401, United States

Location

Heartland Regional Medical Center

Saint Joseph, Missouri, 64506, United States

Location

Sainte Genevieve County Memorial Hospital

Sainte Genevieve, Missouri, 63670, United States

Location

Mercy Hospital Springfield

Springfield, Missouri, 65804, United States

Location

CoxHealth South Hospital

Springfield, Missouri, 65807, United States

Location

Saint Louis Cancer and Breast Institute-South City

St Louis, Missouri, 63109, United States

Location

Washington University School of Medicine

St Louis, Missouri, 63110, United States

Location

Mercy Hospital South

St Louis, Missouri, 63128, United States

Location

Siteman Cancer Center-South County

St Louis, Missouri, 63129, United States

Location

Missouri Baptist Medical Center

St Louis, Missouri, 63131, United States

Location

Siteman Cancer Center at Christian Hospital

St Louis, Missouri, 63136, United States

Location

Mercy Hospital Saint Louis

St Louis, Missouri, 63141, United States

Location

Missouri Baptist Sullivan Hospital

Sullivan, Missouri, 63080, United States

Location

BJC Outpatient Center at Sunset Hills

Sunset Hills, Missouri, 63127, United States

Location

Mercy Hospital Washington

Washington, Missouri, 63090, United States

Location

Community Hospital of Anaconda

Anaconda, Montana, 59711, United States

Location

Billings Clinic Cancer Center

Billings, Montana, 59101, United States

Location

Bozeman Deaconess Hospital

Bozeman, Montana, 59715, United States

Location

Benefis Healthcare- Sletten Cancer Institute

Great Falls, Montana, 59405, United States

Location

Great Falls Clinic

Great Falls, Montana, 59405, United States

Location

Kalispell Regional Medical Center

Kalispell, Montana, 59901, United States

Location

Community Medical Hospital

Missoula, Montana, 59804, United States

Location

CHI Health Saint Francis

Grand Island, Nebraska, 68803, United States

Location

CHI Health Good Samaritan

Kearney, Nebraska, 68847, United States

Location

Saint Elizabeth Regional Medical Center

Lincoln, Nebraska, 68510, United States

Location

Alegent Health Immanuel Medical Center

Omaha, Nebraska, 68122, United States

Location

Alegent Health Bergan Mercy Medical Center

Omaha, Nebraska, 68124, United States

Location

Alegent Health Lakeside Hospital

Omaha, Nebraska, 68130, United States

Location

Creighton University Medical Center

Omaha, Nebraska, 68131, United States

Location

Midlands Community Hospital

Papillion, Nebraska, 68046, United States

Location

Memorial Sloan Kettering Basking Ridge

Basking Ridge, New Jersey, 07920, United States

Location

Monmouth Medical Center Southern Campus

Lakewood, New Jersey, 08701, United States

Location

Saint Barnabas Medical Center

Livingston, New Jersey, 07039, United States

Location

Monmouth Medical Center

Long Branch, New Jersey, 07740, United States

Location

Memorial Sloan Kettering Monmouth

Middletown, New Jersey, 07748, United States

Location

Memorial Sloan Kettering Bergen

Montvale, New Jersey, 07645, United States

Location

Rutgers Cancer Institute of New Jersey

New Brunswick, New Jersey, 08903, United States

Location

Community Medical Center

Toms River, New Jersey, 08755, United States

Location

Memorial Sloan Kettering Commack

Commack, New York, 11725, United States

Location

Memorial Sloan Kettering Westchester

Harrison, New York, 10604, United States

Location

Garnet Health Medical Center

Middletown, New York, 10940, United States

Location

Memorial Sloan Kettering Cancer Center

New York, New York, 10065, United States

Location

Upstate Cancer Center at Oswego

Oswego, New York, 13126, United States

Location

State University of New York Upstate Medical University

Syracuse, New York, 13210, United States

Location

SUNY Upstate Medical Center-Community Campus

Syracuse, New York, 13215, United States

Location

Montefiore Medical Center-Einstein Campus

The Bronx, New York, 10461, United States

Location

Montefiore Medical Center-Weiler Hospital

The Bronx, New York, 10461, United States

Location

Montefiore Medical Center - Moses Campus

The Bronx, New York, 10467, United States

Location

Memorial Sloan Kettering Nassau

Uniondale, New York, 11553, United States

Location

Upstate Cancer Center at Verona

Verona, New York, 13478, United States

Location

Margaret R Pardee Memorial Hospital

Hendersonville, North Carolina, 28791, United States

Location

Sanford Bismarck Medical Center

Bismarck, North Dakota, 58501, United States

Location

Sanford South University Medical Center

Fargo, North Dakota, 58103, United States

Location

Southpointe-Sanford Medical Center Fargo

Fargo, North Dakota, 58103, United States

Location

Sanford Medical Center Fargo

Fargo, North Dakota, 58104, United States

Location

Sanford Broadway Medical Center

Fargo, North Dakota, 58122, United States

Location

Sanford Roger Maris Cancer Center

Fargo, North Dakota, 58122, United States

Location

Indu and Raj Soin Medical Center

Beavercreek, Ohio, 45431, United States

Location

Saint Elizabeth Boardman Hospital

Boardman, Ohio, 44512, United States

Location

Dayton Physicians LLC-Miami Valley South

Centerville, Ohio, 45459, United States

Location

Miami Valley Hospital South

Centerville, Ohio, 45459, United States

Location

Good Samaritan Hospital - Cincinnati

Cincinnati, Ohio, 45220, United States

Location

Oncology Hematology Care Inc-Kenwood

Cincinnati, Ohio, 45236, United States

Location

Bethesda North Hospital

Cincinnati, Ohio, 45242, United States

Location

TriHealth Cancer Institute-Westside

Cincinnati, Ohio, 45247, United States

Location

TriHealth Cancer Institute-Anderson

Cincinnati, Ohio, 45255, United States

Location

Ohio State University Comprehensive Cancer Center

Columbus, Ohio, 43210, United States

Location

Dayton Blood and Cancer Center

Dayton, Ohio, 45409, United States

Location

Miami Valley Hospital

Dayton, Ohio, 45409, United States

Location

Dayton Physician LLC-Miami Valley Hospital North

Dayton, Ohio, 45415, United States

Location

Miami Valley Hospital North

Dayton, Ohio, 45415, United States

Location

Armes Family Cancer Center

Findlay, Ohio, 45840, United States

Location

Blanchard Valley Hospital

Findlay, Ohio, 45840, United States

Location

Orion Cancer Care

Findlay, Ohio, 45840, United States

Location

Atrium Medical Center-Middletown Regional Hospital

Franklin, Ohio, 45005-1066, United States

Location

Dayton Physicians LLC-Atrium

Franklin, Ohio, 45005, United States

Location

Dayton Physicians LLC-Wayne

Greenville, Ohio, 45331, United States

Location

Miami Valley Cancer Care and Infusion

Greenville, Ohio, 45331, United States

Location

Wayne Hospital

Greenville, Ohio, 45331, United States

Location

Greater Dayton Cancer Center

Kettering, Ohio, 45409, United States

Location

Kettering Medical Center

Kettering, Ohio, 45429, United States

Location

Toledo Clinic Cancer Centers-Maumee

Maumee, Ohio, 43537, United States

Location

Toledo Clinic Cancer Centers-Toledo

Toledo, Ohio, 43623, United States

Location

Dayton Physicians LLC - Troy

Troy, Ohio, 45373, United States

Location

Upper Valley Medical Center

Troy, Ohio, 45373, United States

Location

Saint Joseph Warren Hospital

Warren, Ohio, 44484, United States

Location

Saint Elizabeth Youngstown Hospital

Youngstown, Ohio, 44501, United States

Location

Cancer Centers of Southwest Oklahoma Research

Lawton, Oklahoma, 73505, United States

Location

University of Oklahoma Health Sciences Center

Oklahoma City, Oklahoma, 73104, United States

Location

Mercy Hospital Oklahoma City

Oklahoma City, Oklahoma, 73120, United States

Location

Saint Alphonsus Medical Center-Baker City

Baker City, Oregon, 97814, United States

Location

Saint Alphonsus Medical Center-Ontario

Ontario, Oregon, 97914, United States

Location

Lehigh Valley Hospital-Cedar Crest

Allentown, Pennsylvania, 18103, United States

Location

Lehigh Valley Hospital - Muhlenberg

Bethlehem, Pennsylvania, 18017, United States

Location

Pocono Medical Center

East Stroudsburg, Pennsylvania, 18301, United States

Location

Lehigh Valley Hospital-Hazleton

Hazleton, Pennsylvania, 18201, United States

Location

Thomas Jefferson University Hospital

Philadelphia, Pennsylvania, 19107, United States

Location

Jefferson Methodist Hospital

Philadelphia, Pennsylvania, 19148, United States

Location

Sanford Cancer Center Oncology Clinic

Sioux Falls, South Dakota, 57104, United States

Location

Sanford USD Medical Center - Sioux Falls

Sioux Falls, South Dakota, 57117-5134, United States

Location

Saint Joseph Regional Cancer Center

Bryan, Texas, 77802, United States

Location

Sovah Health Martinsville

Martinsville, Virginia, 24115, United States

Location

Harrison Medical Center

Bremerton, Washington, 98310, United States

Location

Highline Medical Center-Main Campus

Burien, Washington, 98166, United States

Location

Saint Elizabeth Hospital

Enumclaw, Washington, 98022, United States

Location

Saint Francis Hospital

Federal Way, Washington, 98003, United States

Location

Saint Clare Hospital

Lakewood, Washington, 98499, United States

Location

Franciscan Research Center-Northwest Medical Plaza

Tacoma, Washington, 98405, United States

Location

Marshfield Medical Center-EC Cancer Center

Eau Claire, Wisconsin, 54701, United States

Location

Marshfield Medical Center-Marshfield

Marshfield, Wisconsin, 54449, United States

Location

Froedtert Menomonee Falls Hospital

Menomonee Falls, Wisconsin, 53051, United States

Location

Medical College of Wisconsin

Milwaukee, Wisconsin, 53226, United States

Location

Marshfield Clinic-Minocqua Center

Minocqua, Wisconsin, 54548, United States

Location

Cancer Center of Western Wisconsin

New Richmond, Wisconsin, 54017, United States

Location

Drexel Town Square Health Center

Oak Creek, Wisconsin, 53154, United States

Location

Marshfield Medical Center-Rice Lake

Rice Lake, Wisconsin, 54868, United States

Location

Marshfield Medical Center-River Region at Stevens Point

Stevens Point, Wisconsin, 54482, United States

Location

Froedtert West Bend Hospital/Kraemer Cancer Center

West Bend, Wisconsin, 53095, United States

Location

Marshfield Medical Center - Weston

Weston, Wisconsin, 54476, United States

Location

Billings Clinic-Cody

Cody, Wyoming, 82414, United States

Location

Welch Cancer Center

Sheridan, Wyoming, 82801, United States

Location

MeSH Terms

Conditions

Prostatic Neoplasms

Condition Hierarchy (Ancestors)

Genital Neoplasms, MaleUrogenital NeoplasmsNeoplasms by SiteNeoplasmsGenital Diseases, MaleGenital DiseasesUrogenital DiseasesProstatic DiseasesMale Urogenital Diseases

Study Officials

  • Atish D. Choudhury, MD, PhD

    Dana-Farber Cancer Institute

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 31, 2022

First Posted

February 16, 2022

Study Start

November 21, 2022

Primary Completion

September 29, 2025

Study Completion (Estimated)

September 1, 2033

Last Updated

December 22, 2025

Record last verified: 2025-12

Locations