Endometrial Cancer Clinical Trial
Official title:
Study of 3D-printed Custom Applicators for Intracavitary HDR Gynaecological Brachytherapy (DISCO)
NCT number | NCT06432478 |
Other study ID # | DISCO |
Secondary ID | |
Status | Recruiting |
Phase | N/A |
First received | |
Last updated | |
Start date | November 24, 2023 |
Est. completion date | September 2028 |
Intracavitary brachytherapy for gynaecological cancer currently use cylinder-type applicators or custom wax moulds to place a radioactive source in close proximity to the treatment area and provide highly conformal dose distributions. This study is a Phase IIa non-randomised interventional pilot trial that will investigate the feasibility of successfully treating patients with 3D-printed custom applicators.
Status | Recruiting |
Enrollment | 10 |
Est. completion date | September 2028 |
Est. primary completion date | September 2028 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Able to give informed consent - Patients indicated for intracavitary brachytherapy - FIGO stage I-IVA - ECOG 0-2 - Primary endometrial cancer, primary vaginal cancer, primary vulva cancer, recurrent gynaecological cancer Exclusion Criteria: - Pregnancy - Patients contraindicated for brachytherapy - Inflammatory bowel disease/history of adhesions/bowel obstruction - Renal transplant/horseshoe kidney - Patients with significant LVSI or pelvic sidewall invasion - Patients requiring interstitial brachytherapy implants |
Country | Name | City | State |
---|---|---|---|
Australia | Royal North Shore Hospital | St Leonards | New South Wales |
Lead Sponsor | Collaborator |
---|---|
Royal North Shore Hospital |
Australia,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Successful treatment of gynaecological HDR brachytherapy patients with 3D printed intracavitary applicators. | To demonstrate the feasibility of successfully simulating, planning and treating a HDR BT gynaecological patient with a 3D-printed internal mould, such that there is a dosimetric and/or clinical benefit for the patient relative to the current standard of care (cylindrical vaginal applicator). Successful treatment indicated by achieving no adverse events or difference to standard of care, and dosimentic comparisons of the 3D printed applicator plan to the cylinder plan are equivalent or better. Feasibility also determined by achieving no logistical or design issues in using the 3D printed applicators clinically. | 5 years | |
Secondary | To assess the patients radiation therapy acute and late toxicities using the CTCAE criteria | RT acute and late side effects will be assessed and quantified using CTCAE criteria via clinician assessment and PROs | 5 years | |
Secondary | To compare quality of treatment plans generated for 3D-printed moulds and cylindrical applicators assessed by dosimetric indices, statistical analysis (p-value) and comparison with international guidelines. | The plan quality of treatment plans generated for 3D-printed moulds and cylindrical applicators will be compared using dosimetric indices including target coverage (D90, Dose Homogeneity index) and organs at risk doses (D2cc, D1cc and point max) as well as patient comfort. statistical analysis (p-value) and comparison with international guidelines will be used to assess the quality of the treatment plans. | 5 years | |
Secondary | Determine feasibility of a pre-planned MR-only procedure | Feasibility of a pre-planned MR-only procedure will be determined using any of the patients that are accrued to the study who have both a CT and MRI performed at the time of simulation. The applicator and treatment plan will be generated based on the MRI and both compared to the CT-based plan and applicator. Feasibility will be indicated by generating equivalent plan quality and applicators from both methods. | 5 years | |
Secondary | To determine the feasibility of an initial CT-only process by comparing initial and final CT plan dosimetry assessed by dosimetric indices, clinical tolerances, and statistical analysis (p-value). | The initial and final CT plan dosimetry will be compared to determine the feasibility of an initial CT-only process. Clinically insignificant differences between the plan dosimetry metrics and all within clinical tolerances will be used to quantify the difference. statistical analysis (p-value) will be used to assess the quality of the treatment plans. | 5 years | |
Secondary | Determine feasibility of optimising 3D-printed applicator design based on the cylinder fitting procedure | The feasibility of an optimised 3D-printed applicator design based on the cylinder fitting procedure will be assessed by comparison of the 3D-printed clinical applicators with applicators derived from CT/MR of the vault in a relaxed state with an expansion applied based on the size of the cylinder applied in the fitting procedure. Feasibility will be determined by looking for a correlation between the size of the 3D printed clinical applicators and the size of the cylinders tolerated by the patient in the fitting procedure. | 5 years | |
Secondary | To measure resources such as procedure times and demonstrate acceptable timescales for the process | Procedure times will be recorded as per ARIA carepath tasks and time taken within the 3D-printed custom applicator workflow compared to the standard of care cylinder applicator workflow with equivalent or less time taken deemed acceptable | 5 years | |
Secondary | To define the resource costs associated with the 3D-printed design process and perform a cost comparison with the standard of care process | Costs associated with the 3D-printed design process will be defined and compared with the standard of care process via economic analysis of the resourcing and unit-price estimates in each arm of the respective workflows | 5 years | |
Secondary | To assess patient experience and acceptability of the process with questionnaires | Patient experience and acceptability of the 3D-printed simulation and treatment processes will be assessed with the EORTC QLQ-C30 questionnaires and success measured by comparison with the standard of care vaginal cylinder process. Questionnaires include questions with a scale of 1-4 where a higher number indicates a worse experience and a scale of 1-7 where a lower number indicates a worse experience. | 5 years |
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