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The PET- Retroperitoneal Sarcoma Study

NCT04224948 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 18

Last updated 2025-12-03

No results posted yet for this study

Summary

Retroperitoneal sarcoma(RPS) is a rare cancer that is difficult to cure as it typically presents as a very large abdominal mass, and complete removal with clear margins is challenging . This study will focus on improving the outcomes of surgery by treating RPS before surgery, to make resection more effective. The role of chemotherapy as a preoperative treatment for RPS is highly controversial. Response to chemotherapy is unpredictable and if the patient's tumour progresses instead of responding, the window of opportunity for resection will be lost. Conventional cross sectional imaging (CT scan) is inadequate to measure response to chemotherapy until 5-6 cycles have been given, possibly with no improvement. Thus it is critical to develop an earlier and reliable way to assess response. Functional imaging by PET scan is used in other tumour types to identify early response to treatment. PET imaging may provide a more meaningful assessment of RPS response to systemic therapy much earlier in the course of treatment than conventional imaging, allowing timely modification of the treatment plan. This study will define the role of PET imaging in evaluating early response to systemic therapy in high grade RPS, improving patient treatment.

Conditions

  • Retroperitoneal Sarcoma

Interventions

DEVICE

PET MRI scan

Standard of care includes a baseline PET-CT and conventional CT after 2 cycles of neoadjuvant chemotherapy, and after 5-6 cycles, of neoadjuvant chemotherapy, as per current practice/ standard of care. Patients that enroll in the trial will receive two additional PET MRI scans- one at baseline and one after 1 cycle of chemotherapy

Sponsors & Collaborators

  • University Health Network, Toronto

    lead OTHER

Principal Investigators

  • Carol Swallow, MD, PhD · Sinai Health System

Study Design

Allocation
NA
Purpose
SCREENING
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-01-03
Primary Completion
2024-12-31
Completion
2024-12-31

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04224948 on ClinicalTrials.gov