Preservation of liver function with local radiation therapy in patients with metastatic intrahepatic cholangiocarcinoma with extrahepatic disease.

Authors

null

Rituraj Upadhyay

The Ohio State University Wexner Medical Center, Columbus, OH

Rituraj Upadhyay , Ethan B. Ludmir , Brian De , Emma Holliday , Grace L. Smith , Cullen M. Taniguchi , Prajnan Das , Bruce D. Minsky , Albert C. Koong , Milind M. Javle , Sunyoung S. Lee , Jean-Nicolas Vauthey , Ching-Wei D. Tzeng , Hop Tran Cao , Eugene Jon Koay

Organizations

The Ohio State University Wexner Medical Center, Columbus, OH, The University of Texas MD Anderson Cancer Center, Houston, TX, Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, The University of Chicago Medical Center, Chicago, IL, University of Texas MD Anderson Cancer Center, Houston, TX

Research Funding

No funding received

Background: Tumor related liver failure (TRLF) is the most common cause of death in patients with metastatic intrahepatic cholangiocarcinoma (mICC) accounting for up to 72% deaths in patients treated with systemic therapy alone. We present our institutional experience of treating mICC patients with local liver-directed radiation therapy (RT). Methods: ICC patients with extrahepatic metastatic disease who received radiation therapy at our center with a biologically equivalent dose (BED) of at least 50 Gy from January 1, 2011 to March 31, 2021 were included in our study. Patient, tumor and treatment characteristics as well as the survival outcomes were recorded. TRLF was considered the cause of death if the patient died due to liver failure; and freedom from TRLF (FFTRLF) at 1 year and 2 years after RT was calculated. Results: Sixty-seven patients were included in the study. The median age was 63 years (range 29-83 years) and median RT dose was 60 Gy (range, 40-100 Gy). 73.1% patients received a BED > 80.5 Gy. All except 1 patient were treated with upfront induction chemotherapy, followed by RT to the primary lesion in liver with (71.6%) or without (28.4%) concurrent chemotherapy. The most common induction chemotherapy regimen used was gemcitabine and cisplatin (65.7%) followed by gemcitabine, cisplatin and paclitaxel (22.4%), while the most common concurrent systemic therapy was capecitabine. Out of 43 patients with satellitosis, 29 were treated with RT to the dominant liver lesion while 14 received RT to the primary as well as one or more satellites. Overall, 15 patients (22.4%) had local progression of the radiated lesion, 42 patients (62.7%) progressed elsewhere in liver, and 52 patients (77.6%) had a distant progression. TRLF was the cause of death in 28.4% of patients. Median OS from diagnosis was 25 months while median OS after RT was 11.9 months. The 1- and 2-year rates of FFTRLF were 73.1% and 58.2% respectively, which were significantly higher than 1- and 2-year OS after RT (47.1% and 24.7% respectively, p < 0.005). Univariate analysis did not identify significant association of FFTRLF or OS with age, sex, performance status, size of liver lesions, T or N stage, satellitosis, vascular thrombosis, TRLF, timing of metastasis, site of metastasis, RT technique and dose and chemotherapy. Conclusions: Liver directed radiation therapy in patients with mICC with extrahepatic disease appears to have favorable rates of TRLF and survival times, compared to historical data. Future prospective studies are warranted to define the survival benefit in these patients attributable to radiation therapy.

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Abstract Details

Meeting

2022 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Gastrointestinal Cancer—Gastroesophageal, Pancreatic, and Hepatobiliary

Track

Gastrointestinal Cancer—Gastroesophageal, Pancreatic, and Hepatobiliary

Sub Track

Hepatobiliary Cancer

Citation

J Clin Oncol 40, 2022 (suppl 16; abstr 4080)

DOI

10.1200/JCO.2022.40.16_suppl.4080

Abstract #

4080

Poster Bd #

68

Abstract Disclosures