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To explore the value of PTC drug screening technique in selecting neoadjuvant therapy for advanced gastrointestinal cancer.
In this study, patients diagnosed with advanced gastrointestinal cancer including locally advanced gastric cancer, locally advanced colorectal cancer and colorectal cancer with liver metastasis. Tumor sample will be collected by endoscopy biopsy, needle biopsy or surgery, which will used for PTC drug screening.
Patients will be randomized to two groups. Patients in experiment group will receive neoadjuvant therapy based on PTC drug screening, and patients in control group will receive neoadjuvant therapy based on clinical experience. 2-4 cycles of neoadjuvant therapy will be administered. Patients appropriate for surgery will receive radical surgery after neoadjuvant therapy. Pathological response will be compared primarily between these two groups.
This is a randomized controlled, open-label and sequential designed clinical trial. All neoadjuvant therapy used in this study or for PTC drug screening comply with NCCN (National comprehensive cancer network) or CSCO (Chinese Society of Clinical Oncology) guidelines.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Neoadjuvant therapy based on PTC drug screening | Experimental | Patients will receive neoadjuvant therapy based on PTC drug screening. The regimen is complied with NCCN and CSCO guidelines. PD-1 inhibitor will be used if effective in drug screening. |
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| Neoadjuvant therapy based on clinical experience | No Intervention | Patients will receive neoadjuvant therapy based on clinical experience. The regimen is complied with NCCN and CSCO guidelines. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| PTC drug screening | Other | PTC is an in vitro tumor model, which serves as a structural and functional unit recapitulating the original tumors in genotype, phenotype, and drug response. PTC will be used in drug screening. |
| Measure | Description | Time Frame |
|---|---|---|
| pathological complete response rate(pCR) | having no invasive cancer left in the resected sample | immediately evaluated after surgery |
| Measure | Description | Time Frame |
|---|---|---|
| pathological response rate | tumor regression grade 0-2 | immediately evaluated after surgery |
| objective response rate(ORR) | CR+PR according to RECIST 1.1 |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Aiwen Wu, M.D. | Contact | +8613911577190 | wuaw@sina.com |
| Name | Affiliation | Role |
|---|---|---|
| Aiwen Wu, M.D. | Peking University Cancer Hospital & Institute | Study Director |
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| ID | Term |
|---|---|
| D005770 | Gastrointestinal Neoplasms |
| ID | Term |
|---|---|
| D004067 | Digestive System Neoplasms |
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D004066 | Digestive System Diseases |
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| evaluated by imaging before surgery |
| disease control rate(DCR) | CR+PR+SD according to RECIST 1.1 | evaluated by imaging before surgery |
| R0 resection rate | microscopically margin-negative resection, in which no gross or microscopic tumor remains in the primary tumor bed | immediately evaluated after surgery |
| prediction accuracy of PTC | consistency between the effect of neoadjuvant chemotherapy and the result of PTC assay | immediately evaluated after surgery |
| D005767 |
| Gastrointestinal Diseases |