About this trial
The objective is to evaluate the efficacy and safety of carbon ion radiotherapy (CIRT) combined with nituzumab and gemcitabine in the treatment of locally advanced and metastatic pancreatic cancer.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥18 years and ≤80 years;
Indications: patients with locally advanced or metastatic pancreatic adenocarcinoma confirmed by histopathology or cytology (stage III - IV).
At least one measurable lesion was present according to RECIST version 1.1 evaluation criteria.
Suitable for one cycle of gemcitabine combined with nituzumab.
Disqualifiers
Patients who have received monoclonal antibodies, EGFR-TKI therapy, anti-angiogenic drugs, and immunosuppressants within six months.
Patients with uncontrolled, cancerous pleural effusion requiring frequent drainage, pericardial effusion, or ascites (allowing for cytological confirmation of effusion), gastrointestinal bleeding, or those identified by the investigator as having a high blood risk within 14 days prior to admission.
Participated in other interventional clinical trials within 30 days prior to screening.
The dose limit for organs at risk cannot reach the preset safe dose limit.
Trial design
Single group
Treatments tested in this trial
carbon ion radiotherapy (CIRT)
Radiation1.CIRT: GTV: Primary tumor visible on imaging and clinical examination, and involved regional lymph nodes identified by CT/MRI (≥1.0 cm) or PET/CT scan. CTV: GTV plus 5mm margin, include posterior peritoneal plexus area and elective node irradiation around the pancreas (ENI). PTV: CTV plus 2.5-5mm margin (depending on the system error of each unit; When pancreatic head cancer is close to the stomach and intestines, the gastrointestinal direction does not expand). ITV: delineated on 4D-CT considering the influence of respiratory activity. Prescription dose: Stratification by measuring the nearest distance between PTV and gastrointestinal tract (≥5mm or \< 5mm); Pancreatic head cancer (distance \< 5mm) : 52.8Gy(RBE)/4.4Gy/12Fx; Pancreatic head, body and tail cancer (≥5mm) : 57.2Gy(RBE)/4.4Gy/13Fx. CIRT was once a day, four or five times a week. 2.Chemotherapy:Gemcitabine 1000mg/m2, intravenous infusion, dl, d8; Q3w . 3.Targeted therapyNituzumab injection 400mg, Qw,at least 4-6 cycles.
Treatment groups
Trial outcomes
Primary outcomes
overall survival
overall survival(OS)
Secondary outcomes
Objective tumor response rate
Objective tumor response rate(ORR)
Progression-free survival
Progression-free survival (PFS)
Sponsors and contacts
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