早期(cT2-3a/bN0M0)低位pMMR直肠癌接受新辅助短程放疗序贯化疗联合免疫治疗后器官保留策略(局部切除或等待观察)的前瞻性、多中心、单臂 Ⅱ期临床研究

注册号:

Registration number:

ChiCTR2500113784 

最近更新日期:

Date of Last Refreshed on:

2025-12-03 09:52:20 

注册时间:

Date of Registration:

2025-12-03 00:00:00 

注册号状态:

预注册

Registration Status:

Prospective registration

注册题目:

早期(cT2-3a/bN0M0)低位pMMR直肠癌接受新辅助短程放疗序贯化疗联合免疫治疗后器官保留策略(局部切除或等待观察)的前瞻性、多中心、单臂 Ⅱ期临床研究

Public title:

Organ Preservation in Patients With Early-Stage (cT2-3a/bN0M0) Mismatch Repair Proficient Low Rectal Carcinoma Via Neoadjuvant Short-Course Radiotherapy Followed by Chemotherapy Combined With PD-1 Inhibitor :A Prospective, Multicenter, Single-Arm, Phase II Trial

注册题目简写:

English Acronym:

研究课题的正式科学名称:

早期(cT2-3a/bN0M0)低位pMMR直肠癌接受新辅助短程放疗序贯化疗联合免疫治疗后器官保留策略(局部切除或等待观察)的前瞻性、多中心、单臂 Ⅱ期临床研究

Scientific title:

Organ Preservation in Patients With Early-Stage (cT2-3a/bN0M0) Mismatch Repair Proficient Low Rectal Carcinoma Via Neoadjuvant Short-Course Radiotherapy Followed by Chemotherapy Combined With PD-1 Inhibitor :A Prospective, Multicenter, Single-Arm, Phase II Trial

研究课题代号(代码):

Study subject ID:

在二级注册机构或其它机构的注册号:

The registration number of the Partner Registry or other register:

申请注册联系人:

张宗进 

研究负责人:

何晓生 

Applicant:

Zongjin Zhang 

Study leader:

Xiaosheng He 

申请注册联系人电话:

Applicant telephone:

+86 156 2625 2534

研究负责人电话:

Study leader's
telephone:

+86 135 4349 0940

申请注册联系人传真 :

Applicant Fax:

研究负责人传真:

Study leader's fax:

申请注册联系人电子邮件:

Applicant E-mail:

zhangzongjin@mail.sysu.edu.cn

研究负责人电子邮件:

Study leader's E-mail:

hexsheng@mail.sysu.edu.cn

申请单位网址(自愿提供):

Applicant website(voluntary supply):

研究负责人网址(自愿提供):

Study leader's website(voluntary supply):

申请注册联系人通讯地址:

广东省广州市天河区员村二横路26号

研究负责人通讯地址:

广东省广州市天河区员村二横路26号

Applicant address:

No. 26 Yuancun Erheng Road, Tianhe District, Guangzhou, Guangdong Province

Study leader's address:

No. 26 Yuancun Erheng Road, Tianhe District, Guangzhou, Guangdong Province

申请注册联系人邮政编码:

Applicant postcode:

510655

研究负责人邮政编码:

Study leader's postcode:

510655

申请人所在单位:

中山大学附属第六医院

Applicant's institution:

The Sixth Affiliated Hospital,Sun Yat-sen University

研究负责人所在单位:

中山大学附属第六医院

Affiliation of the Leader:

The Sixth Affiliated Hospital,Sun Yat-sen University

是否获伦理委员会批准:

Approved by ethic committee:

Yes

伦理委员会批件文号:

Approved No. of ethic committee:

2025ZSLYEC-469

伦理委员会批件附件:

Approved file of Ethical Committee:

查看附件View

批准本研究的伦理委员会名称:

中山大学附属第六医院医学伦理委员会

Name of the ethic committee:

Medical Ethics Committee of The Sixth Affiliated Hospital of Sun Yat-sen University

伦理委员会批准日期:

Date of approved by ethic committee:

2025-08-21 00:00:00

伦理委员会联系人:

中山大学附属第六医院医学伦理委员会

Contact Name of the ethic committee:

Medical Ethics Committee of The Sixth Affiliated Hospital of Sun Yat-sen University

伦理委员会联系地址:

广东省广州市天河区员村二横路26号

Contact Address of the ethic committee:

No. 26 Yuancun Erheng Road, Tianhe District, Guangzhou, Guangdong Province

伦理委员会联系人电话:

Contact phone of the ethic committee:

+86 20 3837 9764

伦理委员会联系人邮箱:

Contact email of the ethic committee:

zslyllb@mail.sysu.edu.cn

研究实施负责(组长)单位:

中山大学附属第六医院

Primary sponsor:

The Sixth Affiliated Hospital of Sun Yat-sen University

研究实施负责(组长)单位地址:

广东省广州市天河区员村二横路26号

Primary sponsor's address:

No. 26 Yuancun Erheng Road, Tianhe District, Guangzhou, Guangdong Province

试验主办单位(项目批准或申办者):

Secondary sponsor:

国家:

中国

省(直辖市):

广东

市(区县):

广州

Country:

China

Province:

Guangdong

City:

Guangzhou

单位(医院):

中山大学附属第六医院

具体地址:

广东省广州市天河区员村二横路26号

Institution
hospital:

The Sixth Affiliated Hospital of Sun Yat-sen University

Address:

No. 26 Yuancun Erheng Road, Tianhe District, Guangzhou, Guangdong Province

经费或物资来源:

研究者发起的项目,无项目经费

Source(s) of funding:

Investigator-Initiated Study (IIS) Without Project Funding

研究疾病:

低位直肠癌  

Target disease:

low rectal cancer r

研究疾病代码:

2B92

Target disease code:

2B92

研究类型:

干预性研究

Study type:

Interventional study

研究所处阶段:

II期临床试验 

Study phase:

2

研究设计:

单臂 

Study design:

Single arm 

研究目的:

本研究拟针对早期(cT2-3a/bN0M0)低位pMMR直肠癌患者,采用新辅助短程放疗序贯化疗联合PD-1单抗免疫治疗,提高l临床完全缓解率和病理完全缓解率,避免直肠切除,增加器官保留率,提高生活质量,同时兼顾肿瘤疗效。主要研究目的为cCR和ypT0-1的病人比例。次要目的为3年器官保留率、3年DFS、3年局部复发率、围手术期并发症、生活质量(EORTC QLQ-C30/CR29、SF-36)、排粪功能(LARS)、排尿功能(IPSS/FLUTS)、性功能(IIEF/FSFI)。  

Objectives of Study:

This study aims to improve the clinical and pathological complete response rates (CCR) in patients with early-stage (cT2-3a/bN0M0) low-lying pMMR rectal cancer by combining neoadjuvant short-course radiotherapy with sequential chemotherapy and PD-1 monoclonal antibody immunotherapy, avoiding rectal resection, increasing organ preservation rates, improving quality of life, and ensuring the efficacy of tumor treatment. The primary objective is the proportion of patients achieving cCR and ypT0-1. Secondary objectives include 3-year organ preservation rate, 3-year disease-free survival (DFS), 3-year local recurrence rate, perioperative complications, quality of life (EORTC QLQ-C30/CR29, SF-36), defecation function (LARS), urination function (IPSS/FLUTS), and sexual function (IIEF/FSFI).

药物成份或治疗方案详述:

 

Description for medicine or protocol of treatment in detail:

 

纳入标准:

Inclusion criteria

排除标准:

1.全身CT、MR或PET-CT(至少包括胸部、全腹部和盆腔)证实有远处转移(M1); 2.患者合并完全性肠梗阻、活动性出血或穿孔并且需行急诊手术; 3.既往或同时存在其他活动性恶性肿瘤(曾接受治愈性治疗且超过5年无发病的恶性肿瘤或可通过充分治疗治愈的原位癌除外); 4.入组研究前12个月内发生过血栓或栓塞事件,例如脑血管意外(包括一过性脑缺血发作)、肺栓塞、深静脉血栓; 5.入组研究前12个月内,出现以下情况:心肌梗死、严重/不稳定型心绞痛、NYHA 2级以上心功能不全、有临床意义的室上性或室性心律失常以及症状性充血性心力衰竭; 6.入组研究前4周内全身性使用抗生素>= 7天,或在筛选期间/首次给药前出现不明原因的发热>38.5°C(经研究者判断,因肿瘤原因导致的发热可以入组); 7.入组研究前2个月内接受过例如剖腹术、开胸术、通过腹腔镜手术切除脏器等大手术或严重外伤(入组本临床试验前手术切口应当完全愈合); 8.存在间质性肺病、非感染性肺炎或无法控制的系统性疾病或罹患自身免疫性疾病; 9.人类免疫缺陷病毒(HIV)感染或已知有获得性免疫缺陷综合征(艾滋病),未经治疗的活动性肝炎(乙型肝炎,定义为HBV-DNA ≥ 500 IU/ml;丙型肝炎,定义为HCV-RNA高于分析方法的检测下限)或合并乙肝和丙肝共同感染; 10.已知或怀疑对研究中使用的任何相关药物过敏的病史; 11.具有炎症性肠病或家族性腺瘤性息肉病病史; 12.妊娠或哺乳期妇女; 13.已知患二氢嘧啶脱氢酶缺乏者; 14.未使用或拒绝使用有效的非激素避孕手段的育龄期妇女(末次月经后< 2年)或有生育可能的男性; 15.存在其他严重身体或精神疾病或实验室检查异常,可能增加参与研究的风险,或干扰研究结果,以及研究者认为不适合参与本研究的患者。

Exclusion criteria:

1. Whole-body CT, MRI, or PET-CT (at least including the chest, entire abdomen, and pelvis) confirms distant metastasis (M1); 2. Patients with complete intestinal obstruction, active bleeding, or perforation requiring emergency surgery; 3. History of or concurrent active malignancy (except for malignancies previously treated with curative intent and disease-free for over 5 years, or in situ carcinomas that can be fully cured with adequate treatment); 4. Occurrence of thrombotic or embolic events within 12 months prior to study enrollment, such as cerebrovascular accidents (including transient ischemic attacks), pulmonary embolism, or deep vein thrombosis; 5. Occurrence within 12 months prior to study enrollment of: myocardial infarction, severe/unstable angina, heart failure of NYHA class 2 or higher, clinically significant supraventricular or ventricular arrhythmias, or symptomatic congestive heart failure; 6. Systemic use of antibiotics >=7 days within 4 weeks prior to study enrollment, or unexplained fever >38.5°C during screening/before first dose (fever due to tumor, as judged by the investigator, is allowed); 7. Major surgery or severe trauma (such as laparotomy, thoracotomy, or organ resection via laparoscopy) within 2 months prior to study enrollment (surgical incisions must be fully healed before enrollment); 8. Presence of interstitial lung disease, non-infectious pneumonia, uncontrolled systemic disease, or autoimmune disease; 9. Human immunodeficiency virus (HIV) infection or known acquired immunodeficiency syndrome (AIDS), untreated active hepatitis (hepatitis B, defined as HBV-DNA >=500 IU/ml; hepatitis C, defined as HCV-RNA above the detection limit of the assay) or co-infection with hepatitis B and C; 10. Known or suspected allergy to any study-related drugs; 11. History of inflammatory bowel disease or familial adenomatous polyposis; 12. Pregnant or breastfeeding women; 13. Known dihydropyrimidine dehydrogenase (DPD) deficiency; 14. Women of childbearing potential (last menstruation <2 years) or men with reproductive potential who do not use or refuse effective non-hormonal contraception; 15. Other serious physical or mental diseases or laboratory abnormalities that may increase the risk of participating in the study, interfere with study results, or are deemed by the investigator as unsuitable for participation.

研究实施时间:

Study execute time:

From 2025-12-15 00:00:00 To 2029-12-31 00:00:00  

征募观察对象时间:

Recruiting time:

From 2025-12-15 00:00:00 To 2026-12-31 00:00:00

干预措施:

Interventions:

组别:

试验组

样本量:

33

Group:

Experimental group

Sample size:

干预措施:

所有入组患者将接受 5×5 Gy 短程放疗,随后予以 4 周期卡培他滨联合奥沙利铂(CAPOX 方案)+ 信迪利单抗免疫治疗;新辅助治疗后2-4周评估结果分别采取以下策略:完全临床缓解(cCR)者采用 “等待观察”(wait and watch)策略;临床再分期为 ycT1-2N0M0 者,行经肛门全层局部切除手术,局部切除后存在高危因素(切缘阳性或病理ypT2 期及以上)或临床再分期为 ycT3 期或淋巴结阳性(ycT3/N+),需行全直肠系膜切除术(TME)。

干预措施代码:

Intervention:

The enrolled patients will receive 5*5Gy short-course radiotherapy, followed by 4 cycles of capecitabine plus oxaliplatin (CAPOX) and Sintilimab, finally receive the "wait and watch" for the complete clinical response(cCR), the local ful thickness excisionfor ycT1-2N0M0, total mesorectal excision (TME) is carried out for ycT3/N+ or patients with high risk factors after local resection(R1 resection or ypT2+).

Intervention code:

研究实施地点:

Countries of recruitment and research settings:

国家:

中国

省(直辖市):

广东 

市(区县):

广州 

Country:

China

Province:

Guangdong

City:

Guangzhou

单位(医院):

中山大学附属第六医院 

单位级别:

三甲 

Institution
hospital:

The Sixth Affiliated Hospital of Sun Yat-sen University

Level of the institution:

Tertiary A

国家:

中国

省(直辖市):

广东 

市(区县):

广州 

Country:

China

Province:

Guangdong

City:

Guangzhou

单位(医院):

南方医科大学南方医院 

单位级别:

三甲 

Institution
hospital:

Southern Medical University Southern Hospital

Level of the institution:

Tertiary A

测量指标:

Outcomes:

指标中文名:

cCR和ypT0-1的病人比例

指标类型:

主要指标

Outcome:

The rate of clinical complete response and successful local resection (cCR+ypT0-1)

Type:

Primary indicator

测量时间点:

新辅助放化疗后2-4周或局部切除后

测量方法:

Measure time point of outcome:

cCR will be evaluated after the completion of neoadjuvant therapy. The ypT0-1 rate will be evaluated after local resection surgery.

Measure method:

指标中文名:

3年器官保留率

指标类型:

次要指标

Outcome:

The 3-year organ preservation rate

Type:

Secondary indicator

测量时间点:

新辅助治疗后3年

测量方法:

Measure time point of outcome:

Assessed up to 3 years after the start of neoadjuvant therapy

Measure method:

指标中文名:

3年无病生存率

指标类型:

次要指标

Outcome:

Three-year disease-free survival

Type:

Secondary indicator

测量时间点:

新辅助治疗后3年

测量方法:

Measure time point of outcome:

From date of initiation of treatment until the date of disease progression or date of death from any cause, assessed up to 36 months.

Measure method:

指标中文名:

3年局部复发率

指标类型:

次要指标

Outcome:

The 3-year local recurrence rate

Type:

Secondary indicator

测量时间点:

新辅助治疗后3年

测量方法:

Measure time point of outcome:

From date of initiation of treatment until the date of local recurrence, assessed up to 36 months.

Measure method:

指标中文名:

手术相关并发症

指标类型:

次要指标

Outcome:

surgery-related complications

Type:

Secondary indicator

测量时间点:

术后3个月

测量方法:

Measure time point of outcome:

3 months after surgical treatment

Measure method:

指标中文名:

生活质量

指标类型:

次要指标

Outcome:

Health-related quality of life

Type:

Secondary indicator

测量时间点:

研究开始时、新辅助治疗结束后、治疗结束后3个月、6个月、12个月、18个月、24个月、30个月和36个月

测量方法:

Measure time point of outcome:

At the time of study initiation, after the completion of neoadjuvant therapy, and at 3 months, 6 months, 12 months, 18 months, 24 months, 30 months, and 36 months after the end of treatment.

Measure method:

采集人体标本:

Collecting sample(s)
from participants:

标本中文名:

直肠癌组织

组织:

Sample Name:

Tissue of rectal cancer

Tissue:

人体标本去向

使用后保存  

说明

制备成石蜡标本保存

Fate of sample:

Preservation after use  

Note:

Prepared and stored in paraffin

标本中文名:

血液

组织:

Sample Name:

Blood

Tissue:

人体标本去向

使用后保存  

说明

提取血浆后保存在-80℃冰箱,长期保存

Fate of sample:

Preservation after use  

Note:

Plasma was collected and stored at –80°C for long-term preservation.

标本中文名:

粪便

组织:

Sample Name:

Stool

Tissue:

人体标本去向

使用后保存  

说明

保存在-80℃冰箱

Fate of sample:

Preservation after use  

Note:

stored at –80°C

征募研究对象情况:

Recruiting status:

尚未开始

Not yet recruiting

年龄范围:

Participant age:

最小 Min age years
最大 Max age years

性别:

男女均可

Gender:

Both

随机方法(请说明由何人用什么方法产生随机序列):

Randomization Procedure (please state who generates the random number sequence and by what method):

None

是否公开试验完成后的统计结果:

Calculated Results after the Study Completed public access:

不公开/Private

盲法:

Blinding:

None

是否共享原始数据:

IPD sharing

否No

共享原始数据的方式(说明:请填入公开原始数据日期和方式,如采用网络平台,需填该网络平台名称和网址):

The way of sharing IPD”(include metadata and protocol, If use web-based public database, please provide the url):

None

数据采集和管理(说明:数据采集和管理由两部分组成,一为病例记录表(Case Record Form, CRF),二为电子采集和管理系统(Electronic Data Capture, EDC),如ResMan即为一种基于互联网的EDC:

本研究采用纸质病例报告表(CRF)进行数据采集。数据将由专门的数据管理人员双人独立录入电子表格,录入过程设有逻辑核查与一致性校验,确保数据的准确性与完整性。所有数据将定期备份,并在数据库锁定前由独立质控人员审核确认。

Data collection and Management (A standard data collection and management system include a CRF and an electronic data capture:

Data collection in this study will be conducted using paper-based Case Report Forms (CRFs). The data will be independently entered into electronic spreadsheets by two trained data management personnel. Logical checks and consistency validations will be implemented during the data entry process to ensure accuracy and completeness. All data will be backed up regularly and reviewed by independent quality control personnel prior to database lock.

数据与安全监察委员会:

Data and Safety Monitoring Committee:

暂未确定/Not yet

注册人:

Name of Registration:

 2025-12-03 09:52:01