This multicenter, prospective, randomized, controlled, open-label, two-arm Phase III clinical trial is designed to evaluate whether adding radiotherapy to oligoprogressive lesions while continuing first-line systemic therapy at the time of oligoprogression can effectively prolong progression-free survival compared to early switching to second-line systemic therapy in oligoprogressive hepatocellular carcinoma.
1. Histological or cytological confirmation of primary hepatocellular carcinoma (HCC), or diagnosis based on the Clinical Diagnosis and Treatment Guidelines for Primary Liver Cancer (2024 edition) issued by the National Health Commission of the People's Republic of China.
2. BCLC stage C at the time of first-line systemic treatment.
3. Oligoprogression must be confirmed by imaging or histopathology during first-line systemic therapy (FLST). The number of oligoprogressive lesions is limited to 1-5, involving no more than 1-3 organs or systems. These lesions may represent either new metastatic sites or progression of pre-existing lesions. In addition, they must fit one of the two classifications defined in the ESTRO-EORTC consensus on oligometastases: repeat oligoprogression or induced oligoprogression. Oligoprogression may occur within intrahepatic lesions. In the case of lymph node progression, each lymphatic drainage region is considered a separate lesion. For example, the para-aortic lymph nodes (number 16a and number 16b) are each counted as separate lymph node regions.
4. Patients must have experienced oligoprogression while receiving their current FLST and must not have previously received any other FLST that resulted in disease progression. Additionally, the current FLST must have maintained disease stability (SD) for at least three months prior to the occurrence of oligoprogression. Furthermore, the expected survival time must be ≥6 months.
1. Patients who received FLST as adjuvant treatment after curative surgery for HCC.
2. Tumor progression occurring within 3 months after initiation of FLST.
3. Patients with combined hepatocellular-cholangiocarcinoma (cHCC-CC)
4. History of grade ≥3 serious adverse events due to FLST.