Clinical trial NCT06230549: Adaptive Radiotherapy in Patients With Gynecological Tumors
Official title: Prospective Randomized Validation of Adaptive Radiotherapy in Patients With Gynecological Tumors and Indication for Radiotherapy
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: Gynecological Tumor
Adaptive Radiotherapy
Radiation
Curative Treatment
Optimization
Adaptive Radiation Therapy
Image Guided Radiotherapy
Cervical Carcinoma
Keywords: gynecological tumor
adaptive radiotherapy
radiation
curative treatment
optimization
adaptive radiation therapy
image guided radiotherapy
Cervical carcinoma
Lead sponsor: University Hospital, Essen
Sponsor class: OTHER
First posted: 2024-01-30
Enrollment: 30
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: Prospective randomized evaluation of adaptive radiotherapy in the definitive radiotherapy of locally advanced gynecologic carcinoma (e.g. cervical carcinoma, endometrial carcinoma, vaginal carcinoma), in the postoperative situation or first series of external beam radiotherapy and in patients in whom radical surgery or HDR brachytherapy as dose boost is not an option.

Detailed description: Online-adaptive radiotherapy (ART) makes it possible to adapt the dose distribution to the anatomical changes online immediately before each radiation fraction. Adaptive radiotherapy is a further development of image-guided radiotherapy (IGRT), which is now standard in radiotherapy. Here, a cone-beam CT (CBCT) is also performed at the beginning of each fraction, which is used to position the patients in relation to the radiation field arrangement of the initial radiation plan approved for the series. In contrast to ART, with IGRT the radiation plan cannot be adapted to deformations in the body from radiation fraction to radiation fraction, e.g. due to different rectum and bladder fillings.

In ART mode, the online adaptive treatment plan for the current treatment is then selected and approved by the specialist online onboard in all cases in which the current target volume for the tumor expansion is not sufficiently covered by the initial treatment plan pre-planned for the series with its planned tolerances, or surrounding normal tissue is exposed too much. If the ART plan does not show any clear dosimetric advantages over the reference plan, especially if the initial plan covers the target volume of the day well, there are no dose increases and the normal tissues are spared as intended, the initial radiation plan from the planning CT can also be used as in IGRT. The aim of this study is to treat at least 15 patients with locally advanced gynecological carcinoma (mainly cervical carcinoma, endometrial carcinoma, vaginal carcinoma), who are to receive definitive radiotherapy at the Department for Radiotherapy at the University Hospital Essen, in ART mode on the Ethos therapy device over an initial 10 radiation fractions. The dose distribution is always compared with the adaptive and the initial plan for the radiation series on the anatomy of the day by the specialist and medical physics expert. The aim of this study is to prospectively investigate what percentage of patients benefit from ART when using standard PTV margins and how to recognize the corresponding patients early in the series. Secondarily, it will be investigated in what proportion of patients the risk organ burden and the safety margins around the clinical target volume can be reduced with ART compared to IGRT and how large this reduction can be.

The EORTC and CTC AE toxicitiy scales and further assessment scales will be evaluated in order to quantify objective and subjective side effects.

Eligibility criteria: Inclusion Criteria:

ECOG 0-1 confirmation by histophatology MR of the pelvis staging

Exclusion Criteria:

Recurrent disease Prior Radiotherapy in pelvic region stage pM1 or cM1

Primary outcomes:
measure: Rectal Toxicity
timeFrame: 2 weeks to 5 years
measure: Bladder Toxicity
timeFrame: 2 weeks to 5 years
measure: Skin Toxicity
timeFrame: 2 weeks to 5 years
measure: Lymph-Edema grade
timeFrame: 2 weeks to 5 years
Secondary outcomes:
measure: Overall Survival
timeFrame: 5 years
measure: Progression Free Survival
timeFrame: 5 years
Other outcomes:
Locations:
city: Essen
country: Germany
facility: Department for Radiotherapy, University Hospital Essen, National Center for Tumor Diseases (NCT) West
state: Germany / NRW
Study officials:
References:
citation: Guberina M, Santiago Garcia A, Khouya A, Pottgen C, Holubyev K, Ringbaek TP, Lachmuth M, Alberti Y, Hoffmann C, Hlouschek J, Gauler T, Lubcke W, Indenkampen F, Stuschke M, Guberina N. Comparison of Online-Onboard Adaptive Intensity-Modulated Radiation Therapy or Volumetric-Modulated Arc Radiotherapy With Image-Guided Radiotherapy for Patients With Gynecologic Tumors in Dependence on Fractionation and the Planning Target Volume Margin. JAMA Netw Open. 2023 Mar 1;6(3):e234066. doi: 10.1001/jamanetworkopen.2023.4066.