Hypofractionated Radiotherapy +Chemotherapy+ Camrelizumab as Neoadjuvant Therapy for Pancreatic Cancer

Hebei Medical University

Status and phase: Enrolling; Phase 2

Conditions: Pancreatic Cancer

Treatments: Radiation: hypofractionated radiotherapy; Drug: Camrelizumab+chemotherapy

Study type: Interventional

Funder types: Other

Identifiers

NCT06435260

ARK-pancreatic-001

Details and patient eligibility

About

The purpose of this study is to assess surgical conversion rate and the immediate and long-term outcomes to patients who receive hypofractionated radiotherapy and AG combined with camrelizumab immunotherapy of Borderline Resectable/locally advanced pancreatic cancer.

Enrollment: 30 estimated patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Age:18 to 75 years old, male or female;
2. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1;
3. Tumor was located in the pancreas;
4. Pathological diagnosis was pancreatic ductal adenocarcinoma or acinar cell carcinoma;
5. No distant metastasis;
6. The pancreatic tumor is located more than 1cm away from the duodenum；
7. Clinical assessment was locally advanced or critical for resectable.

Locally advanced pancreatic cancer diagnostic criteria: (1) due to tumor invasion, venous occlusion or involving a wide range of superior mesenteric vein branch of jejunum, cannot safely - superior mesenteric vein reconstruction. ② (pancreatic head/uncinate process tumors) tumor contact with superior mesenteric artery or celiac artery > 180°. Tumor contact with superior mesenteric artery or coeliac trunk artery > 180°, tumor contact with coeliac trunk artery and invasion of abdominal aorta.

Critical for resectable pancreatic cancer diagnostic criteria: (1) contact with portal vein tumor - superior mesenteric vein > 180 °, 180 ° or less or contact combined intravenous contour irregular or venous thrombosis, but safety is complete resection and reconstruction; The tumor contacted the inferior vena cava. ② (pancreatic head/uncinate process tumors) the tumors contacting the common hepatic artery, but not involving the celiac artery or the origin of the left and right hepatic arteries, can be completely resected and safely reconstructed; Superior mesenteric artery tumor contact 180 ° or less; The tumor contacts the aberrant arteries (such as accessory right hepatic artery, alternative right hepatic artery, alternative common hepatic artery, etc.). (pancreatic body and tail tumors) tumor contact with superior mesenteric artery ≤180°; Tumor contact with celiac artery ≤180°; 7.There was no history of immune system diseases, other malignant tumors, myocarditis, coronary heart disease, other cardiovascular and cerebrovascular diseases, thyroid dysfunction, liver and kidney diseases, psychiatric diseases, infectious diseases, or systemic diseases other than those mentioned above.

Participants were willing to join in this study, good adherence and written informed consent.

Exclusion criteria

1. Patients who did not meet these inclusion criteria;
2. Poor cognitive ability, inability to answer questions, inability to fill out questionnaires, or mental disorders;
3. The investigators think inappropriate.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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30 participants in 1 patient group

Hypofractionated radiotherapy+Camrelizumab+chemotherapy

Experimental group

Description:

The patients with Borderline Resectable/locally advanced pancreatic cancer were treated with hypofractionated radiotherapy using the CyberKnife radiotherapy machine, which was as follows: PGTV=30Gy/5F(PTV≥25Gy/5F), 1 day, a total of 5 days; Chemotherapy combined with ICIs was started 5-7 days after the end of radiotherapy. The chemotherapy regimen was AG regimen (albumin paclitaxel 125mg/m2 d1,8 + gemcitabine 1000mg/m2 d1,8 q3w). The ICIs regimen consisted of 4 cycles of camrelizumab 200mg q21d (on the first day of each cycle). The efficacy was evaluated within 2 weeks after the end of the above-mentioned neoadjuvant therapy, and surgical treatment was performed for patients who were evaluated as operable and those who had a clear willingness to undergo surgery. After surgery, adjuvant chemotherapy and ICIs of the original scheme were determined according to the patient's tolerance and independent willingness, and then the clinical follow-up period was entered.

Treatment:

Drug: Camrelizumab+chemotherapy

Radiation: hypofractionated radiotherapy