Endorectal Balloon and Radiation therapy and Rectal Spacer in Prostate Cancer - Clinical Trials Registry

Study Overview

Status

Terminated

Conditions

Prostate Cancer

Intervention / Treatment

Detailed Description

This is a randomized, two arm study for patients with low-risk or favorable intermediate-risk prostate cancer as defined by 1.2016 NCCN criteria.

Patients will be randomized to either rectal spacer placement or endorectal balloon placement, daily prior to each radiation treatment.

Endorectal balloon (ERB): Immobilization device manually placed into the rectum prior to radiation treatment planning CT and daily treatment delivery, to immobilize the prostate and reduce prostate motion.
Rectal spacer (RS): Biodegradable gel that is transperineally injected between the rectum and prostate under transrectal ultrasound guidance, to increase physical distance and thereby reduce radiation dose to the anterior rectal wall. The spacer begins to biodegrade in 2-3 months, and is fully absorbed within 6 months.

This study plans to enroll a total of 40 patients with an accrual period of 4 years.

Study Type

Interventional

Enrollment (Actual)

1

Phase

Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

United States
- New York
  - New York, New York, United States, 10065
    - Weill Cornell Medicine

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years to 99 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

Biopsy-proven diagnosis of prostate adenocarcinoma, diagnosed within 1 year of randomization
Either NCCN-defined low-risk disease (T1c-T2a, Gleason score 3+3=6, PSA <10), intermediate-risk disease (Gleason score 3+4=7, 4+3=7, T2b-c and/or PSA 10-20; ) or high-risk disease due to Gleason score 8-10 and/or PSA >20 ng/ml, but not due to T3-T4 disease on physical exam.

Exclusion Criteria:

History of prior pelvic radiation (external beam or brachytherapy)
Prior or concurrent lymphomatous/hematogenous malignancy, or history of prior/concurrent invasive malignancy during the past 5 years
Very high risk prostate cancer (T3b-T4 on clinical exam, Primary Gleason pattern 5, or >4 cores with Gleason score 8-10)
History of prior chemotherapy for prostate cancer
History of irritable bowel disease
Evidence of lymph node involvement
AUA score >15
Prostate size > 90 cc

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Primary Purpose: Treatment
Allocation: Randomized
Interventional Model: Parallel Assignment
Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Endorectal balloon - Radiation therapy Group 1 : Endorectal balloon (ERB): Immobilization device manually placed into the rectum prior to radiation treatment planning CT and daily treatment delivery, to immobilize the prostate and reduce prostate motion. Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days.	Device: Endorectal Balloon Endorectal balloon (ERB): Immobilization device manually placed into the rectum prior to radiation treatment planning CT and daily treatment delivery, to immobilize the prostate and reduce prostate motion. Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days. Radiation: Radiation therapy Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days.
Experimental: Rectal spacer - Radiation therapy Group 2 : Rectal spacer (RS): Biodegradable gel that is transperineally injected between the rectum and prostate under transrectal ultrasound guidance, to increase physical distance and thereby reduce radiation dose to the anterior rectal wall. The spacer begins to biodegrade in 2-3 months, and is fully absorbed within 6 months. Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days.	Radiation: Radiation therapy Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days. Device: Rectal Spacer Rectal spacer (RS): Biodegradable gel that is transperineally injected between the rectum and prostate under transrectal ultrasound guidance, to increase physical distance and thereby reduce radiation dose to the anterior rectal wall. The spacer begins to biodegrade in 2-3 months, and is fully absorbed within 6 months. Patients on each arm will receive 5 fractions of radiation, 7.25Gy per fraction, delivered 2-3 times a week (every other day excluding weekends), to total dose of 36.25 Gy. The total duration of treatment will be no shorter than 10 days.

Participant Group / Arm

Intervention / Treatment

Experimental: Endorectal balloon - Radiation therapy

Group 1 : Endorectal balloon (ERB): Immobilization device manually placed into the rectum prior to radiation treatment planning CT and daily treatment delivery, to immobilize the prostate and reduce prostate motion.