Envafolimab Monotherapy or Envafolimab + CAPEOX as Neoadjuvant Therapy for Locally Advanced Colorectal Cancer

NCT ID: NCT06014372

Last Updated: 2024-04-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

55 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-07-01

Study Completion Date

2026-07-01

Brief Summary

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There exists substantial evidence suggesting that patients diagnosed with MSI-H/dMMR colorectal cancer can derive benefits from immunotherapy in the management of advanced colorectal cancer. In cases of locally advanced colorectal cancer exhibiting microsatellite instability (dMMR/MSI-H), patients exhibit low responsiveness to neoadjuvant chemotherapy, resulting in minimal rates of complete tumor remission and downstaging. Nevertheless, initial exploratory studies, characterized by modest sample sizes, reveal a favorable therapeutic effect of neoadjuvant immunotherapy in this particular patient population. Envafolimab monoclonal antibody, the first PD-L1 antibody developed and manufactured in China, possesses noteworthy practical and societal value in the context of exploratory clinical research on neoadjuvant immunotherapy for locally advanced MSI-H/dMMR colorectal cancer patients. The objective of this study is to evaluate the safety and efficacy of envafolimab monoclonal antibody (PD-L1) as neoadjuvant therapy for locally advanced MSI-H/dMMR colorectal cancer through a prospective, multi-cohort phase II clinical trial. Additionally, this study aims to investigate the effectiveness and safety of envafolimab monoclonal antibody in combination with CAPEOX as a neoadjuvant treatment regimen for locally advanced pMMR colorectal cancer.

Detailed Description

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Conditions

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Colon Cancer Neoadjuvant Therapy Immunotherapy

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Envafolimab Group

Patients diagnosed with colon cancer, with T stage determined as 3-4 based on enhanced MR imaging, or with any T stage accompanied by imaging findings suggestive of lymph node metastasis, and excluding patients with distant metastasis, who are confirmed to have microsatellite instability-high (MSI-H)/deficient mismatch repair (dMMR) colon cancer, will be enrolled in Group A

Group Type EXPERIMENTAL

Envafolimab

Intervention Type DRUG

Upon confirming eligibility based on inclusion criteria and obtaining signed informed consent, the patient will be administered Envafolimab at a dose of 300mg every 3 weeks (Q3W) for a total of 4 cycles, starting on Day 1.

Envafolimab+CAPEOX Group

Patients diagnosed with colon adenocarcinoma, with T stage determined as 3-4 based on enhanced MR imaging, or with any T stage accompanied by imaging findings suggestive of lymph node metastasis, and excluding patients with distant metastasis, who are confirmed to have microsatellite stable (MSS)/proficient mismatch repair (pMMR) colon cancer, will be enrolled in Group B.

Group Type ACTIVE_COMPARATOR

Envafolimab

Intervention Type DRUG

Upon confirming eligibility based on inclusion criteria and obtaining signed informed consent, the patient will be administered Envafolimab at a dose of 300mg every 3 weeks (Q3W) for a total of 4 cycles, starting on Day 1.

CAPEOX

Intervention Type DRUG

The neoadjuvant treatment regimen will consist of Oxaliplatin at a dose of 130mg/m2, administered intravenously over a period of more than 2 hours on Day 1, every 3 weeks; and Capecitabine at a dose of 1000mg/m2, orally, twice daily from Day 1 to Day 14, every 3 weeks, for a total of 4 cycles.

Interventions

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Envafolimab

Upon confirming eligibility based on inclusion criteria and obtaining signed informed consent, the patient will be administered Envafolimab at a dose of 300mg every 3 weeks (Q3W) for a total of 4 cycles, starting on Day 1.

Intervention Type DRUG

CAPEOX

The neoadjuvant treatment regimen will consist of Oxaliplatin at a dose of 130mg/m2, administered intravenously over a period of more than 2 hours on Day 1, every 3 weeks; and Capecitabine at a dose of 1000mg/m2, orally, twice daily from Day 1 to Day 14, every 3 weeks, for a total of 4 cycles.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Pathological confirmed rectal cancer
* Clinical stage T3-4 or T any N1
* With or without MRF positivity, with or without EMVI positivity
* R0 resection is estimated
* Age ranged from 18 to 70

Exclusion Criteria

* Clinical stage T1-2 N0
* Distance metastasis
* Multiple primary tumor
* Cachexy
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Sun Yat-sen University

OTHER

Sponsor Role lead

Responsible Party

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Zhen-Hai Lu

Prof.

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Sun Yat-Sen University Cancer Center

Guangzhou, Guangdong, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Zhenhai Lu, Prof

Role: CONTACT

+862087343584

Rongxin Zhang, Prof

Role: CONTACT

+862087343584

Facility Contacts

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Zhen-Hai Lu, Prof.

Role: primary

+86 20 87343584

Rong-Xin Zhang, Prof.

Role: backup

+86 20 87343456

Other Identifiers

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2022-FXY-256-Department of CRC

Identifier Type: -

Identifier Source: org_study_id

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