- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07657169
Molecular Subtype-Guided Postoperative Radiotherapy for Phyllodes Tumor of the Breast: A Randomized Controlled Trial
2026년 6월 15일 업데이트: Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Efficacy and Safety of Molecular Subtype-Guided Postoperative Radiotherapy for Phyllodes Tumor of the Breast: A Prospective, Open-Label, Randomized Controlled Trial
Phyllodes tumor (PT) of the breast is a rare fibroepithelial neoplasm, and the role of postoperative radiotherapy (PORT) remains controversial.
Our team has previously established a molecular subtyping system for PT, classifying patients into four subtypes.
Among them, the malignant novel 1/2 (MN1/MN2) subtypes exhibit extremely high risk of local recurrence, and retrospective data suggest that PORT may significantly improve local control in these subtypes.
This study aims to evaluate the efficacy and safety of molecular subtype-guided postoperative radiotherapy (PORT) in patients with MN-subtype phyllodes tumor of the breast.
This prospective, multicenter, open-label, randomized controlled trial plans to enroll 160 patients with molecularly confirmed MN1 or MN2 subtype who have undergone R0 resection.
Patients will be randomized in a 1:1 ratio to either the PORT group or the observation-only group, with stratification by negative margin width (<1 cm vs. ≥1 cm) and molecular subtype (MN1 vs. MN2).
The primary endpoint is 2-year local recurrence-free survival (LRFS).
Secondary endpoints include distant metastasis-free survival (DMFS), disease-free survival (DFS), overall survival (OS), and the incidence of acute and late radiotherapy-related toxicities.
By using an innovative molecular subtyping system to precisely select the target population, this study seeks to assess the benefit and safety of PORT in MN-subtype phyllodes tumors.
The results are expected to provide the highest level of evidence for this specific subgroup, advance treatment strategies toward "molecular subtype-guided precision radiotherapy," improve patient outcomes, and inform future clinical guidelines.
연구 개요
연구 유형
중재적
등록 (추정된)
160
단계
- 해당 없음
연락처 및 위치
이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.
연구 연락처
- 이름: Yan Nie
- 전화번호: +86 020-81332587
- 이메일: nieyan7@mail.sysu.edu.cn
연구 장소
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Guangdong
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Guangzhou, Guangdong, 중국, 510120
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University
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연락하다:
- Yan Nie
- 전화번호: +86 020-81332587
- 이메일: nieyan7@mail.sysu.edu.cn
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Shenzhen, Guangdong, 중국, 518000
- Peking University Shenzhen Hospital
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연락하다:
- Junwei Cui
- 전화번호: +86 13828832157
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Shandong
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Jinan, Shandong, 중국, 250033
- The Second Hospital of Shandong University
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연락하다:
- Fei Wang
- 전화번호: +86 17660083882
- 이메일: fei.wang@sdu.edu.cn
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Qingdao, Shandong, 중국, 266003
- The Affiliated Hospital of Qingdao University
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연락하다:
- Haibo Wang
- 전화번호: +86 18661805787
- 이메일: hbwang66@qdu.edu.cn
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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:
- Female patients aged ≥18 years and ≤75 years.
- Histologically confirmed breast phyllodes tumor (PT) by the central laboratory, with molecular classification as MN1 or MN2 subtype via transcriptome sequencing or IHC;
- Primary or ipsilateral local recurrence following R0 resection (negative margins) before enrollment;
- Pathologically confirmed borderline or malignant PT;
- No evidence of distant metastasis (M0);
- ECOG performance status 0-1;
- Signed informed consent before treatment;
- Expected randomization and study entry within 8-12 weeks (no later than 16 weeks) after surgery.
Exclusion Criteria:
- Previous radiation to the same-side breast or chest;
- women, or those of childbearing potential refusing effective contraception; Pregnancy, lactation, or refusal of contraception by fertile subjects;
- Grade III-IV bone marrow suppression: WBC≤1.9*109/L,ANC≤0.9*109/L,PLT≤49*109/L,AST, ALT≥2*ULN;
- Significant diarrhea, severe active infection, uncontrolled systemic disease, interstitial lung disease, active connective tissue disease, or LVEF < 50%;
- Significant diarrhea, severe active infection, uncontrolled systemic disease, interstitial lung disease, active connective tissue disease, or LVEF < 50%;
- Prior or planned systemic anti-tumor therapy (chemotherapy, targeted therapy, immunotherapy, or investigational agents) during the study;
- Participation in other clinical trials that precludes study inclusion;
- Any other condition that, in the opinion of the investigator, renders the patient unsuitable for the trial.
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 |
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간섭 없음: 관찰
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실험적: Postoperative Radiotherapy (PORT)
Patients receive postoperative radiotherapy starting within 8-12 weeks (max 16 weeks) after R0 resection.
For breast-conserving surgery: whole-breast irradiation (50 Gy/25 fractions) plus sequential tumor bed boost (10-16 Gy/5-8 fractions).
For mastectomy: chest wall irradiation (50 Gy/25 fractions).
No routine regional nodal irradiation unless pathologically positive.
Acute and late toxicities monitored per CTCAE v5.0.
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Radiotherapy delivered after R0 resection.
For breast-conserving surgery: whole-breast irradiation (50 Gy in 25 fractions, 2 Gy/fraction, 5 fractions/week) followed by sequential tumor bed boost (10-16 Gy in 5-8 fractions, 2 Gy/fraction).
For mastectomy: chest wall irradiation (50 Gy in 25 fractions).
Techniques allowed: IMRT, VMAT, or TOMO.
No routine regional nodal irradiation unless pathologically confirmed nodal involvement.
Target volume and organ-at-risk constraints as per protocol (e.g., ipsilateral lung Dmean <15 Gy, heart Dmean <5 Gy for left-sided tumors).
Acute and late toxicities assessed by CTCAE v5.0.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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2-year Local Recurrence-Free Survival (LRFS)
기간: From randomization up to 2 years post-randomization (primary analysis at 2 years)
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Time from randomization to the first documented locoregional recurrence (ipsilateral breast/chest wall or regional lymph nodes) confirmed by imaging and/or pathology, or death from any cause, whichever occurs first.
Patients alive without locoregional recurrence are censored at the date of last known follow-up.
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From randomization up to 2 years post-randomization (primary analysis at 2 years)
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Distant Metastasis-Free Survival (DMFS)
기간: From randomization up to 5 years (primary analysis for secondary endpoints will be performed at 2 years, with extended follow-up up to 5 years)
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From randomization up to 5 years (primary analysis for secondary endpoints will be performed at 2 years, with extended follow-up up to 5 years)
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Disease-Free Survival (DFS)
기간: From randomization up to 5 years (primary analysis of secondary endpoints at 2 years, with extended follow-up to 5 years)
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From randomization up to 5 years (primary analysis of secondary endpoints at 2 years, with extended follow-up to 5 years)
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Overall Survival (OS)
기간: From randomization up to 5 years
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From randomization up to 5 years
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Incidence of Acute and Late Radiotherapy-Related Toxicities
기간: From start of radiotherapy up to 5 years post-randomization (acute: within 90 days; late: from 90 days to 5 years)
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Proportion of patients experiencing adverse events (AEs) assessed by Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.
Acute toxicity is defined as events occurring within 90 days after start of radiotherapy; late toxicity as events occurring >90 days after start of radiotherapy.
Includes radiation dermatitis, radiation pneumonitis, cardiac toxicity, rib fracture, breast/chest wall fibrosis, and secondary malignancies.
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From start of radiotherapy up to 5 years post-randomization (acute: within 90 days; late: from 90 days to 5 years)
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공동 작업자 및 조사자
여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.
간행물 및 유용한 링크
연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.
일반 간행물
- Zheng WH, Long ZQ, Kou J, Sun JY, Li FY, Zhang LL, He ZY. Postoperative radiation therapy in localized breast malignant phyllodes tumors: RPA-derived risk model identifies high-benefit subgroups with local control improvement. Breast. 2025 Dec;84:104617. doi: 10.1016/j.breast.2025.104617. Epub 2025 Oct 22.
- Kim YJ, Kim K. Radiation therapy for malignant phyllodes tumor of the breast: An analysis of SEER data. Breast. 2017 Apr;32:26-32. doi: 10.1016/j.breast.2016.12.006. Epub 2016 Dec 22.
- Ma B, Li X, Zhuang Z, Han M, Zhang Y, Ye F, Bi Z, Deng W, Zhang J, Yang Y, Nie Y. Effects of radiotherapy in borderline and malignant phyllodes tumors after R0 resection: a propensity score analysis. Ther Adv Med Oncol. 2025 Oct 27;17:17588359251387556. doi: 10.1177/17588359251387556. eCollection 2025.
- Varghese SS, Sasidharan B, Manipadam MT, Paul MJ, Backianathan S. Radiotherapy in Phyllodes Tumour. J Clin Diagn Res. 2017 Jan;11(1):XC01-XC03. doi: 10.7860/JCDR/2017/24591.9167. Epub 2017 Jan 1.
- Zhao W, Tian Q, Zhao A, Wang B, Yang J, Wang L, Zhang L, Dong D, Chen L, Yang J. The role of adjuvant radiotherapy in patients with malignant phyllodes tumor of the breast: a propensity-score matching analysis. Breast Cancer. 2021 Jan;28(1):110-118. doi: 10.1007/s12282-020-01135-7. Epub 2020 Aug 3.
- Barth RJ Jr, Wells WA, Mitchell SE, Cole BF. A prospective, multi-institutional study of adjuvant radiotherapy after resection of malignant phyllodes tumors. Ann Surg Oncol. 2009 Aug;16(8):2288-94. doi: 10.1245/s10434-009-0489-2. Epub 2009 May 8.
- Donato AR, Goncalves R, Maesaka JY, Aguiar FN, Soares JM Jr, Ruiz CA, Filassi JR, Baracat EC. Phyllodes tumors of the breast: A comprehensive review of diagnosis, treatment, and follow-up. Clinics (Sao Paulo). 2025 Mar 14;80:100617. doi: 10.1016/j.clinsp.2025.100617. eCollection 2025.
- Zhang H, Tang S, Biskup E, Zhang Y, Yong L, Chen L, Cai F. Long-term Survival After Diverse Therapeutic Modalities in Malignant Phyllodes Tumors of the Breast. Technol Cancer Res Treat. 2022 Jan-Dec;21:15330338221121086. doi: 10.1177/15330338221121086.
- Gradishar WJ, Moran MS, Abraham J, Abramson V, Aft R, Agnese D, Allison KH, Anderson B, Bailey J, Burstein HJ, Chen N, Chew H, Dang C, Elias AD, Giordano SH, Goetz MP, Jankowitz RC, Javid SH, Krishnamurthy J, Leitch AM, Lyons J, McCloskey S, McShane M, Mortimer J, Patel SA, Rosenberger LH, Rugo HS, Santa-Maria C, Schneider BP, Smith ML, Soliman H, Stringer-Reasor EM, Telli ML, Wei M, Wisinski KB, Yeung KT, Young JS, Schonfeld R, Kumar R. Breast Cancer, Version 3.2024, NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw. 2024 Jul;22(5):331-357. doi: 10.6004/jnccn.2024.0035.
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 (추정된)
2026년 6월 1일
기본 완료 (추정된)
2030년 12월 31일
연구 완료 (추정된)
2030년 12월 31일
연구 등록 날짜
최초 제출
2026년 6월 15일
QC 기준을 충족하는 최초 제출
2026년 6월 15일
처음 게시됨 (실제)
2026년 6월 18일
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
2026년 6월 18일
QC 기준을 충족하는 마지막 업데이트 제출
2026년 6월 15일
마지막으로 확인됨
2026년 5월 1일
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- SYSKY-2026-390-02
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
아니요
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. .
Postoperative Radiotherapy (PORT)에 대한 임상 시험
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Institute of Oncology Ljubljana모병
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Joris B.W. ElbersErasmus Medical Center; HollandPTC모병두경부 편평 세포 암종 | 방사선 요법 | 양성자 치료 | 저분할 | 면역 체계 억제네덜란드
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Chang Gung Memorial HospitalC. R. Bard완전한
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Liverpool John Moores UniversityUniversity of Illinois at Chicago; Georgia Southern University완전한프로바이오틱스 | 운동선수 | 장내 미생물 | 유산소 운동 | 장내 마이크로바이옴 | 위장관 자극영국
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University of Saskatchewan완전한
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First Affiliated Hospital Xi'an Jiaotong University모병
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University of California, IrvineBeckman Laser Institute University of California Irvine완전한