Acute Toxicity After Moderate Hypo-fractionated Intensity Modulated Radiotherapy IMRT or Prostate Cancer

Acute and Late Toxicity After Moderate Hypo-fractionated Intensity Modulated Radiotherapy (IMRT) With Simultaneous Integrated Boost (SIB) for Prostate Cancer

External radiation techniques (EBRT) is considered one of the primary therapies for patients of all risk classifications of prostate cacer . EBRT aims to control tumor growth while keeping acute and late adverse events to a minimum and ensuring biochemical progression-free outcome

Study Overview

• Status: Active, not recruiting
• Conditions: Radiation Toxicity
• Intervention / Treatment: Radiation: IMRT with SIB

Detailed Description

Patients and methods This is a prospective study of at least 50 patients to record acute and late toxicity using moderate hypo-fractionation with simultaneous integrated boost (SIB) IMRT for Prostate Cancer.Data will be collected at Clinical Oncology and Nuclear Medicine Department Mansoura University and Oncology Center Tanta University from January 2022 to December 2024 Patients Eligibility criteria Age >40 Pathologically proved prostate cancer Patients with unfavorable intermediate, High. very high risk groups and N1disease (Metastases in regional node(s) Risk groups according to NCCN guidelines 2021 and new grade grouping system of International Society of Urological Pathology (ISUP) Consensus Conference 2014

Unfavorable intermediate risk group :

exclusion criteria: Patients with prior pelvic irradiation. history of collagen vascular . inflammatory bowel disease. Double malignancy.

Methods Data acquisition planning computed tomography (CT) imaging will be performed in supine position using knee and ankle fixation support system for immobilization of the legs and patients arms on their chest.

Axial images will be obtained with 3-5 mm slice thickness from L1 vertebra to about 3 cm below the ischial tuberosity.

Before planning CT, patients will be instructed to have moderately, comfortably filled bladder and empty rectum four tattoos will be marked on the skin at the time of planning CT, rectum, bladder and hip joints will be contoured as organs at risk (OARs).

Target volumes

The prostate clinical target volume (CTV-pros) :

Include the whole prostate gland.

Prostate and seminal vesicles CTV (CTV-psv) :

Generated by 5mm expansion of CTV-pros in all directions except posteriorly at the prostate-rectum interface + proximal 2 cm of the seminal ( in case of cT3b the entire seminal vesicles will be included) .

Whole pelvis clinical target volume (CTV-pelv):

Consist of CTV-psv + common iliac (under L5-S1 space), external iliac, presacral and obturator lymph nodes.

Dose and fractionation All patients will receive moderate hypo fractionation with step and shoot IMRT with SIB in 28 fractions using 6-10 MV photon beams they will receive 70 Gy to PTV-pros in 2.5Gy/fraction and 57.4 Gy to PTV-psv in 2.05 Gy/fraction 50.4 Gy to the pelvic lymph nodes using 1.8 Gy/fraction for PTV coverage, the 95% of the prescribed dose will cover 95% of the target volume (V95% > 95%) for all PTVs. Rectum V45Gy, V63Gy, bladder V45Gy, hip joints V45Gy will be constrained below 50%, 20%, 65% and 10% of their volumes respectively.

Treatment delivery and care Before treatment a detailed medical history will be recorded and physical examination including PSA , pretreatment bone scan and pelvi -abdominal CT +/- MRI will be required to stage the prostate cancer and to exclude distant metastases.

Intermediate risk patients with bulky disease or un- favorable histological parameters will receive neo-adjuvant and concomitant hormone for 4-6 months (short-term hormone therapy) and in high risk patients neo-adjuvant ,concomitant and adjuvant hormone therapy for 24-36 months (long-term hormone therapy).

Patients will be evaluated every second week during the treatment, every three months after radiation therapy for the first year .

Acute toxicities will be reported during radiation therapy and within the initial 3-month and late toxicity will be recorded thereafter according to Common Terminology Criteria for Adverse Events (CTCAE)version 5.0 .

• Study Type: Observational
• Enrollment (Estimated): 50

Contacts and Locations

Study Locations

• Egypt
  • Mansoura, Egypt
    • Clinical Oncology and Nuclear Medicin Mansoura University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 40 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

male patients with prostate cancer proved pathologically non metastatic

Description

Inclusion Criteria:

- Age >40 Pathologically proved prostate cancer Patients with unfavorable intermediate, High. very high risk groups and N1disease (Metastases in regional node(s)

Exclusion Criteria:

Patients with prior pelvic irradiation. history of collagen vascular . inflammatory bowel disease. Double malignancy.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Primary end point is to asses acute toxicity of moderate hypo-fractionation using intensity-modulated radiotherapy (IMRT) with a simultaneous integrated boost (SIB) in prostate cancer patients	according to Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0.	Acute toxicities will be reported within the initial 18 week of starting radiotherapy

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Secondary end point is to asses late toxicity	using Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0.	will be recorded after 3 months of end of radiotherapy according to Common Terminology Criteria for Adverse Events (CTCAE)version 5.0 .

Collaborators and Investigators

• Sponsor: hanan fawzy
• Investigators: Principal Investigator: hanan fawzy, Mansoura University Hospital

Study record dates

Study Major Dates

• Study Start (Actual): July 25, 2022
• Primary Completion (Estimated): December 12, 2024
• Study Completion (Estimated): December 12, 2024

Study Registration Dates

• First Submitted: January 31, 2022
• First Submitted That Met QC Criteria: February 22, 2022
• First Posted (Actual): March 3, 2022

Study Record Updates

• Last Update Posted (Actual): October 18, 2023
• Last Update Submitted That Met QC Criteria: October 17, 2023
• Last Verified: October 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms; Urogenital Neoplasms; Neoplasms by Site; Genital Neoplasms, Male; Prostatic Diseases; Urogenital Diseases; Male Urogenital Diseases; Genital Diseases, Male; Genital Diseases; Prostatic Neoplasms
• Other Study ID Numbers: MansouraUH

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No