이 페이지는 자동 번역되었으며 번역의 정확성을 보장하지 않습니다. 참조하십시오 영문판 원본 텍스트의 경우.

Ultrahypofractionated Versus Normofractionated Sequential Boost After Whole-breast Radiation Therapy in Patients Treated With Breast-conserving Surgery for Breast Cancer (ULTIMO)

2026년 7월 28일 업데이트: Cancer Research Antwerp

The ULTIMO trial is a monocentric, prospective, randomised controlled, open-label, phase III interventional clinical trial, with a non-inferiority design, in patients with breast cancer undergoing breast conservative treatment (BCT). After giving informed consent and verifying eligibility, data collection starts and patients will be randomized in one of the following treatment arms:

  • Standard treatment arm: Breast Conserving Surgery (BCS) takes place, followed by the SoC hypofractionated Whole Breast Radiation Therapy (WBRT) and SoC normofractioned sequential boost (normSEB) of 10Gy over 5 fractions.
  • Experimental treatment arm: Breast Conserving Surgery (BCS) takes place, followed by the SoC hypofractionated WBRT and experimental ultrahypofractionated sequential boost (ultSEB) of 6Gy in a single fraction.

The primary objective of the ULTIMO study is to assess whether the ultSEB RT boost protocol is non-inferior to the current SoC normSEB RT boost protocol. This assessment will be based on the cosmetic outcome of the breasts, while also taking into account quality of life (QoL), the frequency and intensity of (S)AEs of interest (breast pain and fibrosis), and oncological survival.

연구 개요

연구 유형

중재적

등록 (실제)

132

단계

  • 3단계

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

    • Antwerpen
      • Antwerp, Antwerpen, 벨기에, 2610
        • Ziekenhuis aan de Stroom

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인
  • 고령자

건강한 자원 봉사자를 받아들입니다

아니

설명

Inclusion Criteria:

  • Breast cancer patients referred for WBRT + boost to the lumpectomy cavity
  • Patients ≥18y
  • Karnofsky Performance Score >70%, or ECOG <2
  • Life expectancy of more than 5 years
  • Invasive tumour free resection margins, defined as R0 resection on the pathology report
  • Written informed consent

Exclusion Criteria:

  • Previous contralateral breast cancer
  • Previous RT of the same breast or thorax.
  • Metastatic disease (M1)

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 없음(오픈 라벨)

무기와 개입

참가자 그룹 / 팔
개입 / 치료
활성 비교기: Standard treatment arm (SoC; Normofractionated boost RT)

In the control arm, the boost of the radiation therapy will be delivered according to the standard of care fractionation and dosage scheme. This consists of 5 fractions of 2Gy each, adding up to a total dose of 10Gy.

All other treatments are not considered to be study-specific and are performed according to the standard of care treatment for breast cancer.

Standard of care fractionation and dosage scheme of the sequential radiation therapy boost. This consists of 5 fractions of 2Gy each, adding up to a total dose of 10Gy.
다른 이름들:
  • normSEB
실험적: Experimental treatment arm (Hypofractionated boost RT)

In the experimental arm, the boost of the radiation therapy is delivered in a ultrahypofractionated scheme. This consists of a single fraction of 6Gy.

All other treatments are not considered to be study-specific and are performed according to the standard of care treatment for breast cancer.

The radiation therapy sequential boost is delivered in a ultrahypofractionated scheme. This consists of a single fraction of 6Gy.
다른 이름들:
  • ultSEB

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Cosmetic non-inferiority - BCCT.core scoring
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

BCCT.core is a software package for evaluating photographs of breasts after BCS. The 'Global cosmetic result' from the two frontal photos (arms up, and arms down) will be averaged and then used as the individual value of this measure. The results are scored on a 4-point Likert scale, coded as 0-3.

Analysis metric:

The change from baseline at 1 and 3YFU will be used. Negative values will be transformed to '1' to signal an inferiority event, positive or values of zero will be transformed to '0' to signal non-inferiority.

For comparisons and estimands, please refer to the SAP.

Method of aggregation:

The results will be reported as a contingency table reporting both frequencies and proportions of non-inferior and inferior results in each treatment arm.

Time point(s):

A baseline assessment is performed during the screening visit, followed by repeated measurements during the 1 and 3YFU (primary endpoint) visits.

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Cosmetic outcome - Expert panel, AIS-TAS
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The AIS is a tool for scoring breast cosmesis based on standardized photos. It comprises of 5 items, each comprising of a 5 point Likert-scale, coded as 1 to 5. The score is given based on the group of photos taken at a single time point. The scores of all items are summed to produce the TAS, which consequently ranges from 5 to 25. The AIS is used in an expert panel setting, where all scores, from each assessor are averaged per item.

A higher scores represents a more favourable cosmetic outcome.

Analysis metric:

AIS-TAS absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit, followed by repeated measurements during the 1 and 3YFU (primary endpoint) visits.

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Cosmetic outcome - Expert panel, AIS-Symmetry
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The AIS is a tool for scoring breast cosmesis based on standardized photographs. It comprises of 5 items, each comprising of a 5 point Likert-scale, coded as 1 to 5. The score is given based on the group of photos taken at a single time point. The AIS is used in an expert panel setting, where all scores, from each assessor are averaged per item.

A higher scores represents a more favourable cosmetic outcome.

Analysis metric:

AIS-Symmetry score absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit, followed by repeated measurements during the 1 and 3YFU (primary endpoint) visits.

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

2차 결과 측정

결과 측정
측정값 설명
기간
Cosmetic outcome - Physician scoring
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The physician scoring scale (questionnaire, cfr. protocol) will be used to assess cosmetic outcome. The normalised average score of all items will be summed and used as outcome measure. This will be calculated as the score of an item divided by the amount of answering options minus 1 (k-1), averaged over all items. Some questions have the option 'not evaluable', if this answer is selected, then that item is not used in deriving the average score.

A higher scores represents a more favourable cosmetic outcome.

Analysis metric:

Absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Cosmetic outcome - Patient reported (PROM)
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The cosmetic evaluation questionnaire by Sneeuw at al. will be used to assess cosmetic outcome, as reported by the participant. The normalised average score of all items will be summed and used as outcome measure. This will be calculated as the score of an item divided by the amount of answering options minus 1 (k-1), averaged over all items.

A higher scores represents a more favourable cosmetic outcome.

Analysis metric:

Absolute values (calculated score) will be used for analysis.

Method of aggregation:

The mean, median, variance and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Quality of life - EORTC QLQ C30 v3 - Global health status/QoL
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The QoL (QLQ-C30) outcome variable is operationalised through the QLQ-C30 questionnaire. The answers are transformed into 3 separate scores, which can all range from 0 to 100. These scores are: Global health status/QoL, Functional scales, Symptom scales. Where a higher score on the first 2 scales indicate a better health state and QoL, while on the symptom scale a higher score indicates a higher level of disturbance by symptoms.

Analysis metric:

The QLQ-C30 Global health status absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Quality of life - EORTC QLQ C30 v3 -Functional scales
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The QoL (QLQ-C30) outcome variable is operationalised through the QLQ-C30 questionnaire. The answers are transformed into 3 separate scores, which can all range from 0 to 100. These scores are: Global health status/QoL, Functional scales, Symptom scales. Where a higher score on the first 2 scales indicate a better health state and QoL, while on the symptom scale a higher score indicates a higher level of disturbance by symptoms.

Analysis metric:

The QLQ-C30 Functional scales score absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Quality of life - EORTC QLQ C30 v3 -Symptom scales
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The QoL (QLQ-C30) outcome variable is operationalised through the QLQ-C30 questionnaire. The answers are transformed into 3 separate scores, which can all range from 0 to 100. These scores are: Global health status/QoL, Functional scales, Symptom scales. Where a higher score on the first 2 scales indicate a better health state and QoL, while on the symptom scale a higher score indicates a higher level of disturbance by symptoms.

Analysis metric:

The QLQ-C30 Symptom scales score absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Quality of life - EORTC QLQ BR23 v1 - Functional scales
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The QoL (QLQ-BR23) outcome variable is operationalised through the QLQ-BR23 questionnaire. The answers are transformed into 2 separate scores, which can both range from 0 to 100. These scores are: Functional scales; Symptom scales. Where a higher score on the functional scale indicate a better health state and QoL, while on the symptom scale a higher score indicates a higher level of disturbance by symptoms.

Analysis metric:

The QLQ-BR23 Functional scales score absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Quality of life - EORTC QLQ BR23 v1 - Symptom scales
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

The QoL (QLQ-BR23) outcome variable is operationalised through the QLQ-BR23 questionnaire. The answers are transformed into 2 separate scores, which can both range from 0 to 100. These scores are: Functional scales; Symptom scales. Where a higher score on the functional scale indicate a better health state and QoL, while on the symptom scale a higher score indicates a higher level of disturbance by symptoms.

Analysis metric:

The QLQ-BR23 Symptom scales score absolute values will be used for analysis.

Method of aggregation:

The mean, median, SD and IQR will be reported. For comparisons and estimands, please refer to the SAP.

Time point(s):

A baseline assessment is performed during the screening visit. It is then assessed again at 1 year, and 3 years of follow-up after the last study treatment (LST).

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Fibrosis
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

During the 1Y and 3Y Follow-Up study visits the overall and tumour bed fibrosis will be scored according to the 'National Cancer Institute Common Terminology Criteria for Adverse Events' (NCI-CTCAE) v5.0 AE reporting system. This scoring will be performed by either the principal- or sub-investigators.

Analysis metric:

Tabulation of absence vs. presence and severity of fibrosis will be used for analysis.

Method of aggregation:

The proportion of participants experiencing no 'Fibrosis' vs. any 'Fibrosis' will be used. As well as the frequency of all grades, including 0 (absence).

For comparisons and estimands, please refer to the SAP.

Time point(s):

Fibrosis will be assessed and recorded during the 1YFU and 3YFU study visits.

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Breast pain
기간: From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.

Operationalisation:

During the 1Y and 3Y Follow-Up study visits the occurrence of 'Breast pain' will be scored according to the 'National Cancer Institute Common Terminology Criteria for Adverse Events' (NCI-CTCAE) v5.0 AE reporting system. This scoring will be performed by either the principal- or sub-investigators.

Analysis metric:

Tabulation of absence vs. presence and severity of 'Breast pain' will be used for analysis.

Method of aggregation:

The proportion of participants experiencing no 'Breast pain' vs. any 'Breast pain' will be used. As well as the frequency of all grades, including 0 (absence).

For comparisons and estimands, please refer to the SAP.

Time point(s):

Fibrosis will be assessed and recorded during the 1YFU and 3YFU study visits.

From enrollment to the end of follow-up at 3 years of follow-up, counting from the last study visit.
Oncological survival and time-to-event data - Overall Survival (OS)
기간: Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

Operationalisation:

The oncological survival and TTE data are operationalised as time-to-event intervals for the events of interest listed below.

The 'OS' TTE/survival outcome will be reported according to the 2015 DATECAN consensus, including time-to-event data for the following events of interest: 'Death from any cause'.

Analysis metric:

The TTE data is registered in days from randomisation (Rz). Censoring will be used for participants without events at the end of their follow up.

Method of aggregation:

KM-estimates, as well as proportions free from events at follow-up visit timepoints will be reported. The non-aggregated data will be used for survival analysis. For comparisons and estimands, please refer to the SAP.

Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.
Oncological survival and time-to-event data - Breast Cancer-Specific Survival (BCSS)
기간: Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

Operationalisation:

The oncological survival and TTE data are operationalised as time-to-event intervals for the events of interest listed below.

The 'BCSS' TTE/survival outcome will be reported according to the 2015 DATECAN consensus, including time-to-event data for the following events of interest: 'Death from breast cancer'.

Analysis metric:

The TTE data is registered in days from randomisation (Rz). Censoring will be used for participants without events at the end of their follow up.

Method of aggregation:

KM-estimates, as well as proportions free from events at follow-up visit timepoints will be reported. The non-aggregated data will be used for survival analysis. For comparisons and estimands, please refer to the SAP.

Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.
Oncological survival and time-to-event data - Relapse-Free Survival (RFS)
기간: Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

Operationalisation:

The oncological survival and TTE data are operationalised as time-to-event intervals for the events of interest listed below.

The 'RFS' TTE/survival outcome will be reported according to the 2015 DATECAN consensus, including time-to-event data for the following events of interest: 'Death from any cause', 'Invasive ipsilateral breast tumor recurrence', 'Local Invasive recurrence', 'Regional Invasive recurrence', 'occurrence of metastases', or 'Ipsilateral DCIS'.

Analysis metric:

The TTE data is registered in days from randomisation (Rz). Censoring will be used for participants without events at the end of their follow up.

Method of aggregation:

KM-estimates, as well as proportions free from events at follow-up visit timepoints will be reported. The non-aggregated data will be used for survival analysis. For comparisons and estimands, please refer to the SAP.

Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.
Oncological survival and time-to-event data - Locoregional Relapse-Free Survival (L-RFS)
기간: Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

Operationalisation:

The oncological survival and TTE data are operationalised as time-to-event intervals for the events of interest listed below.

The 'L-RFS' TTE/survival outcome will be reported according to the 2015 DATECAN consensus, including time-to-event data for the following events of interest: 'Death from any cause', 'Invasive ipsilateral breast tumor recurrence', 'Local Invasive recurrence', 'Regional Invasive recurrence', or 'Ipsilateral DCIS'.

Analysis metric:

The TTE data is registered in days from randomisation (Rz). Censoring will be used for participants without events at the end of their follow up.

Method of aggregation:

KM-estimates, as well as proportions free from events at follow-up visit timepoints will be reported. The non-aggregated data will be used for survival analysis. For comparisons and estimands, please refer to the SAP.

Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.
Oncological survival and time-to-event data - Distant-Relapse Free Survival (D-RFS)
기간: Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

Operationalisation:

The oncological survival and TTE data are operationalised as time-to-event intervals for the events of interest listed below.

The 'D-RFS' TTE/survival outcome will be reported according to the 2015 DATECAN consensus, including time-to-event data for the following events of interest: 'Death from any cause', or 'occurrence of metastases'.

Analysis metric:

The TTE data is registered in days from randomisation (Rz). Censoring will be used for participants without events at the end of their follow up.

Method of aggregation:

KM-estimates, as well as proportions free from events at follow-up visit timepoints will be reported. The non-aggregated data will be used for survival analysis. For comparisons and estimands, please refer to the SAP.

Oncological TTE data will be registered at 1 and 3 years of follow-up after the last study treatment (LST). However, the exact dates of diagnosis/death will be used.

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

수사관

  • 수석 연구원: Melanie Machiels, MD, PhD, Iridium Netwerk

간행물 및 유용한 링크

연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2022년 3월 29일

기본 완료 (실제)

2025년 11월 28일

연구 완료 (실제)

2026년 3월 25일

연구 등록 날짜

최초 제출

2026년 5월 6일

QC 기준을 충족하는 최초 제출

2026년 5월 12일

처음 게시됨 (실제)

2026년 5월 15일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 7월 29일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 7월 28일

마지막으로 확인됨

2026년 7월 1일

추가 정보

이 연구와 관련된 용어

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

미정

IPD 계획 설명

There is no current plan to share IPD. If sharing IPD could help our scientific knowledge/understanding, it could be considered. Before IPD is shared, a motivated request, ethical commission approval and a signed DTA is needed.

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

구독하다