Stereotactic Body Radiotherapy (SBRT) for Oligometastatic Prostate Cancer

NCT ID: NCT04599686

Last Updated: 2022-08-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-09-11

Study Completion Date

2025-10-01

Brief Summary

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The aim of this study is to test the safety and feasibility of SBRT without ADT in oligometastatic prostate cancer in patients for whom the standard treatment is ADT, and to further explore how long only radiotherapy for oligometastases can prolong biochemical progression-free survival (bPFS). In this study, men with oligometastatic prostate cancer lesions will be randomized (1:1) to ADT versus SBRT. Within 6 weeks of the oligometastases diagnosis, ADT or SBRT (30-50Gy with 3-5 fractions) will be administered.

Detailed Description

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The oligometastatic disease state is an increasingly recognized phenomenon in prostate cancer. Ga-68 PSMA PET/CT has high accuracy in the diagnosis metastases from prostate cancer. In this protocol, pretreatment Ga-68 PSMA PET/ CT shall be performed in all patients.

ADT is considered standard of care treatment for advanced prostate cancer. But hormonal therapy can have side effects that greatly trouble men and lead to castration-resistant prostate cancer (CRPC). Any effort to delay the start of hormonal therapy would be an advantage to the patient. Stereotactic body radiation therapy (SBRT) is highly focused radiation, given in a very dose intensive fashion and delivered in usually less than one week. SBRT has been shown to be very effective on bone or lymph nodes metastases. Therefore, we are studying the safety and feasibility of SBRT on patients with five or fewer prostate cancer bone or lymph nodes metastases to determine if we can stall the use of hormonal therapy and/or prevent other site metastases from developing elsewhere in the body.

Conditions

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Treatment

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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ADT

Evaluating men with oligometastatic prostate cancer lesions randomized to ADT.

Group Type ACTIVE_COMPARATOR

ADT

Intervention Type DRUG

On the day of enrollment, luteinizing hormone-releasing hormone agonist (LHRHa) was given for ADT.

SBRT

Evaluating men with oligometastatic prostate cancer lesions randomized to stereotactic body radiation therapy (SBRT).

Group Type EXPERIMENTAL

SBRT

Intervention Type RADIATION

Evaluating men with oligometastatic prostate cancer lesions randomized to stereotactic body radiation therapy (SBRT) (3-5 fractions).

Interventions

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ADT

On the day of enrollment, luteinizing hormone-releasing hormone agonist (LHRHa) was given for ADT.

Intervention Type DRUG

SBRT

Evaluating men with oligometastatic prostate cancer lesions randomized to stereotactic body radiation therapy (SBRT) (3-5 fractions).

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* 80 years old

* Histologically confirmed adenocarcinoma of the prostate
* Prostate cancer treated with curative intent (radical prostatectomy, primary radiotherapy, or a combination of both)
* Ga-68 prostate-specific membrane antigen (PSMA) PET/CT evidence of one to three metastases (bone or lymph node) within 6 weeks of enrolment, if the position of oligometastases is judged by the doctor to be in the same radiotherapy area, the number of metastases can be appropriately increased to 5
* Without ADT treatment
* PSA\< 50ng/ml
* ECOG performance status 0-2
* Written informed consent according to ICH/GCP regulations before registration and prior to any trial specific procedures

Exclusion Criteria

* Any previous or ongoing treatment of oligometastases including radiotherapy, ADT, chemotherapy, focal treatment, etc.
* Unstable lesions with spinal or long bone metastases
* A tumor located at less than 3 mm from the urethra or rectum when measured at the MRI

* 4 metastases, or if the metastases are in the same radiotherapy area, ≥6 metastases
* Histologically confirmed neuroendocrine tumor or small cell carcinoma of the prostate
* Severe or active co-morbidity likely to impact on the advisability of SBRT like severe liver or kidney dysfunction, etc.
* Patients with other malignancies, or acute or other severe infections, with ulcerative colitis, inflammatory bowel disease, etc.
* Patients who have participated in other clinical trials for less than three months
* Unsuitable to participate in this clinical trial judged by the investigator
Minimum Eligible Age

18 Years

Maximum Eligible Age

99 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Changhai Hospital

OTHER

Sponsor Role lead

Responsible Party

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Zhang Huo Jun

Clinical Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Changhai hospital

Shanghai, Shanghai Municipality, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Huojun Zhang, PhD

Role: CONTACT

021-31162222

Xianzhi Zhao, MD

Role: CONTACT

021-31162222

Facility Contacts

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Huojun Zhang, M.D.

Role: primary

021-31162222

References

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Zhao X, Wang T, Ye Y, Li J, Gao X, Zhang H. Stereotactic body radiotherapy (SBRT) versus androgen deprivation therapy (ADT) for oligometastatic prostate cancer: protocol for a prospective randomised control clinical trial. BMJ Open. 2022 Sep 30;12(9):e051371. doi: 10.1136/bmjopen-2021-051371.

Reference Type DERIVED
PMID: 36180115 (View on PubMed)

Study Documents

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Document Type: Study Protocol

Please see the clinical trials NCT04599686

View Document

Other Identifiers

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Changhai Ho

Identifier Type: -

Identifier Source: org_study_id

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