Radiotherapy to Patients With CA19-9-elevated Advanced Pancreatic Cancer (PTCA199-11)

August 4, 2025 updated by: Guopei Luo, Fudan University

Radiotherapy Plus Chemotherapy to Patients With CA19-9-elevated Advanced Pancreatic Cancer Who Are Not Refractory to Chemotherapy

The purpose of this study is to evaluate the efficacy of chemotherapy plus radiotherapy to patients with CA19-9-elevated Advanced Pancreatic Cancer who are not refractory to chemotherapy.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Pancreatic adenocarcinoma (PDAC) is a highly lethal malignancy with a 5-year survival less than 10%. Approximately 80% of patients with pancreatic cancer are diagnosed at an advanced stage. Chemotherapy is one of the major treatments for advanced pancreatic cancer. In 2011, the PRODIGE trial has shown that oxaliplatin, irinotecan, fluorouracil, and leucovorin (FOLFIRINOX) was associated with a survival advantage but had increased toxicity.

Carbohydrate antigen 19-9 (CA19-9) is the most widely used biomarker in pancreatic cancer. Circulating CA19-9 levels are positively correlated with tumor burden and stage in pancreatic cancer with a diagnostic sensitivity of approximately 80%, suggesting that approximately 20% of patients have normal CA19-9 levels. It is well recognized that Lewis (-) individuals, constituting approximately 10% of the population, have low or no secretion of CA19-9 due to the lack of critical enzyme involved in CA19-9 biosynthesis. Thus, approximately 10% of patients with pancreatic cancer have normal CA19-9 levels regardless of tumor stage. Our previously retrospective study has shown that CA19-9-normal advanced pancreatic cancer may be more sensitive to chemotherapy combined with radiotherapy.

The purpose of this study is to evaluate the efficacy of chemotherapy plus radiotherapy to patients with CA19-9-elevated Advanced Pancreatic Cancer who are not refractory to chemotherapy. Progression-free survival (PFS), objective response rate (ORR), overall survival (OS) and disease control rate (DCR) are measured every four weeks.

Study Type

Interventional

Enrollment (Estimated)

210

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • China
    • Shanghai
      • Shanghai, Shanghai, China, 200032
        • Recruiting
        • Shanghai Cancer center
        • Contact:
        • Principal Investigator:
          • Guopei Luo, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Ability to understand and the willingness to sign a written informed consent document.
  • Age ≥ 18 years and ≤ 80 years.
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-2.
  • Histologically or cytologically confirmed advanced pancreas adenocarcinoma.
  • Patients who are not refractory to previous chemotherapy and who have not received radiotherapy.
  • Locally advanced pancreatic cancer.
  • Baseline serum CA19-9 > 37 U/mL, and CA19-9 level within normal range (≤37 U/mL) after chemotherapy .
  • Presence of at least of one measurable lesion in agreement to RECIST criteria.
  • The expected survival ≥ 3 months.
  • Adequate organ performance based on laboratory blood tests.
  • Women of childbearing potential and men must agree to use adequate contraception prior to study entry and for the duration of study participation.

Exclusion Criteria:

  • Pregnant or nursing women.
  • Primary pancreatic cancer.
  • Baseline serum CA19-9 ≤ 37 U/mL.
  • The diagnosis was confirmed by pathology as non-adenocarcinoma of pancreas.
  • Inflammation of the digestive tract, including pancreatitis, cholecystitis, cholangitis, etc.
  • Severe and uncontrollable accompanying diseases that may affect protocol compliance or interfere with the interpretation of results.
  • Renal insufficiency or dialysis
  • Other serious accompanying illnesses, which, in the researcher's opinion, could seriously adversely affect the safety of the treatment.
  • Patients who are allergic to oxaplatin or other chemotherapy drugs.
  • Patients who are unwilling or unable to comply with study procedures.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: chemotherapy
Continuing chemotherapy using the previous regimen
Drug: Gemcitabine, Nab-paclitaxel, Irinotecan
continuing chemotherapy using the previous regimen until disease progression
Radiation: Intensity-Modulated Radiation Therapy (IMRT)
Receive Intensity-Modulated Radiation Therapy (IMRT) after about 2~6 cycles of chemotherapy.
Experimental: Radiotherapy
Patients will be recommended to receive Intensity-Modulated Radiation Therapy (IMRT) after about 2~6 cycles of chemotherapy. Other radiation therapies include stereotactic body radiotherapy (SBRT) and proton could be administered.
Radiation: Intensity-Modulated Radiation Therapy (IMRT)
Receive Intensity-Modulated Radiation Therapy (IMRT) after about 2~6 cycles of chemotherapy.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
progression-free survival, PFS
Time Frame: At the end of Cycle 1 (each cycle is 28 days)
PFS of subjects from recruiting to the time of disease progression
At the end of Cycle 1 (each cycle is 28 days)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall survival，OS
Time Frame: At the end of Cycle 1 (each cycle is 28 days)
OS of subjects from recruiting to the time of death from any cause
At the end of Cycle 1 (each cycle is 28 days)
disease control rate (DCR)
Time Frame: At the end of Cycle 1 (each cycle is 28 days)
CR + PR + SD
At the end of Cycle 1 (each cycle is 28 days)
objective response rate (ORR)
Time Frame: At the end of Cycle 1 (each cycle is 28 days)
CR + PR
At the end of Cycle 1 (each cycle is 28 days)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Fudan University

Investigators

  • Principal Investigator: Guopei Luo, MD, Fudan University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 15, 2024

Primary Completion (Estimated)

May 1, 2027

Study Completion (Estimated)

May 1, 2028

Study Registration Dates

First Submitted

January 31, 2024

First Submitted That Met QC Criteria

February 8, 2024

First Posted (Actual)

February 9, 2024

Study Record Updates

Last Update Posted (Actual)

August 7, 2025

Last Update Submitted That Met QC Criteria

August 4, 2025

Last Verified

February 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PTCA199-11

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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