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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04318340
Other study ID # 2000026385
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date July 16, 2020
Est. completion date March 20, 2023

Study information

Verified date July 2023
Source Yale University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study will assess the comfort and fit of a novel applicator for endometrial cancer patients who are candidates for vaginal brachytherapy. This study is only assessing the applicator fitting. No patients in this study will be treated with the novel applicator.


Description:

In the treatment of endometrial cancer, adjuvant vaginal brachytherapy is typically performed to deliver radiation dose to the apex of the vagina with a fixed diameter vaginal applicator which extends the full length of the vagina. The largest cylinder which fits at the apex provides the best dosimetry. Smaller diameter cylinders may provide sub-optimal coverage of potential areas of disease. Due to pain or discomfort with a large cylinder, some women may be treated with a smaller diameter cylinder. A novel applicator, with a tapered design and two-step insertion was fabricated to improve the comfort, fit, and patient compliance of this procedure while maintaining optimum geometry and dosimetry at the dome. Our primary aim is to assess patient comfort with the new applicator. Patients will be fit with different applicators (standard of care and novel tapered vaginal applicator) and their comfort will be assessed with a visual analog scale-based survey, comparing the two. Aim #1: Assess if the 3.0cm diameter novel tapered applicator is more comfortable than the standard 3.0cm diameter applicator among patients fitted with a standard 3.0cm diameter applicator. Aim #2: Determine what percentage of patients who would otherwise be treated with a standard 2.6cm diameter vaginal cylinder can be up-sized to a 3.0cm diameter cylinder with the novel tapered applicator design. Aim #3: Assess in vivo dosimetry (optional for all patients). Patients who are prescribed vaginal brachytherapy undergo 3-dimensional cross-sectional imaging (i.e., MRI or CT) prior to treatment, as standard of care. This is done with the standard treatment applicator inserted to assess radiation dose distribution. In this optional aim, patients will undergo a slightly longer MRI, with additional MRI images performed with the novel tapered applicator in place to characterize and assess dosimetry, fit, contact with mucosal surfaces and presence of air gaps in comparison to a standard cylindrical applicator.


Recruitment information / eligibility

Status Completed
Enrollment 21
Est. completion date March 20, 2023
Est. primary completion date March 20, 2023
Accepts healthy volunteers No
Gender Female
Age group 18 Years and older
Eligibility Eligibility Criteria - Patients with stage I-IV endometrial cancer. - Patient must have been treated with hysterectomy. - A radiation oncology determined the patient's disease warrants adjuvant treatment with vaginal brachytherapy as sole adjuvant radiotherapy. - Patient consented to receive standard of care vaginal brachytherapy treatment. - Vaginal cuff deemed healing appropriately by treating radiation oncologist during initial consultation without evidence of infection, pelvic symptoms, or other surgical complications. - 18 = Age - English speaking. Exclusion Criteria - Subjects meeting any of the criteria below may not participate in the study: - Requires premedication with pain medications and/or anxiolytics during applicator fitting. - Will receive pelvic EBRT. - Prior known diagnosis of lupus, scleroderma, dermatomyositis, Crohn's disease, ulcerative colitis, pacemakers, or other contraindications to radiotherapy.

Study Design


Intervention

Other:
Tapered applicator
An applicator inserted in 2 steps that tapers at the distal vagina
Standard applicator
A 2.6 cm standard applicator is inserted and sized up to a standard 3 cm applicator if tolerable.

Locations

Country Name City State
United States Smilow Cancer Hospital New Haven Connecticut

Sponsors (1)

Lead Sponsor Collaborator
Yale University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Patient comfort Patient comfort will be assessed with a visual analog scale-based survey rating 0 (none) to 10 (severe) in each of the following domains: pain, pressure, burning, stress, hardness/roughness, and stretching at both insertion and in final resting positions. up to 10 minutes
Primary Ability to up-size with tapered applicator Determine what percentage of patients who would otherwise be treated with a standard 2.6cm diameter vaginal cylinder can be up-sized to a 3.0cm diameter cylinder with the novel tapered applicator design. up to 10 minutes
Secondary Assess in vivo dosimetry (optional for all patients) Patients who are prescribed vaginal brachytherapy undergo 3-dimensional cross-sectional imaging (i.e., MRI or CT) prior to treatment, as standard of care. This is done with the standard treatment applicator inserted to assess radiation dose distribution. In this optional aim, patients will undergo a slightly longer MRI, with additional MRI images performed with the novel tapered applicator in place to characterize and assess dosimetry, fit, contact with mucosal surfaces and presence of air gaps in comparison to a standard cylindrical applicator. up to 10 minutes
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