Abstract
Objectives
To evaluate safety and effectiveness of selective internal radiation therapy (SIRT) using yttrium-90 for localized and locally advanced intrahepatic cholangiocarcinoma (iCCA).
Methods
A retrospective review was performed of patients with localized iCCA treated with SIRT at a single institution. Overall survival (OS), local tumor response, progression-free survival (PFS), and toxicity were collected. Stratified analysis was performed based on surgical resection. Predictor analysis of OS was performed using the Fine-Grey regression analysis model with patients bridged to surgery regarded as competing events.
Results
A total of 28 consecutive patients with localized iCCA were treated with a total of 38 sessions of SIRT (17 segmental, 13 lobar, and 8 combined deliveries) and a mean dominant target dose per session of 238.4 ± 130.0 Gy. The cumulative radiologic response rate was 16/28 (57.1%) with a median PFS of 265 days. Median survival time (MST) was 22.9 months for the entire cohort with 1-year and 3-year survival of 78.4% and 45.1%, respectively. Ten patients (34.5%) were downstaged to surgical intervention (7 resection, 3 transplant) and showed longer OS (p = 0.027). The 1-year and 3-year OS for patients who received surgery were 100% and 62.5% (95% CI: 14.2–89.3%), respectively. Age (p = 0.028), Eastern Cooperative Oncology Group performance status (p = 0.030), and objective radiologic response (p=0.014) are associated with OS. Two ≥grade 3 hyperbilirubinemia, anemia, and one pleuro-biliary fistula occurred post-SIRT.
Conclusions
SIRT for localized iCCA is safe and effective in achieving radiological response, downstaging to surgery and transplant, and resulting in pathologic necrosis.
Clinical relevance statement
Selective internal radiation therapy should be considered for patients with localized and locally advanced intrahepatic cholangiocarcinoma.
Key Points
• The effectiveness of radioembolization for intrahepatic cholangiocarcinoma (iCCA) can be underestimated given the inclusion of extrahepatic disease.
• Radioembolization is safe and effective for local and locally advanced iCCA. Age, Eastern Cooperative Oncology Group performance status, and radiologic response are associated with survival.
• Radioembolization should be considered for patients with localized and locally advanced iCCA.
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Abbreviations
- ALP:
-
Alkaline phosphatase
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- CA 19-9:
-
Carbohydrate antigen 19-9
- CEA:
-
Carcinoembryonic antigen
- CI:
-
Confidence interval
- CR:
-
Complete response
- CT:
-
Computed tomography
- ECOG:
-
Eastern Cooperative Oncology Group
- iCCA:
-
Intrahepatic cholangiocarcinoma
- LDLT:
-
Living donor liver transplant
- MISPHEC:
-
The Yttrium-90 Microspheres in Cholangiocarcinoma trial
- mOS:
-
Median OS
- MRI:
-
Magnetic resonance imaging
- MST:
-
Median survival time
- NLR:
-
Neutrophil/lymphocyte ratio
- ORR:
-
Objective response rate
- OS:
-
Overall survival
- PD:
-
Progressive disease
- PR:
-
Partial response
- RECIST:
-
Response Evaluation Criteria in Solid Tumors
- SD:
-
Stable disease
- SHR:
-
Subdistribution hazard ratio
- SIRT:
-
Selective internal radiation therapy
- Y90:
-
Yttrium-90
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Yu, Q., Ungchusri, E., Pillai, A. et al. Selective internal radiation therapy using yttrium-90 microspheres for treatment of localized and locally advanced intrahepatic cholangiocarcinoma. Eur Radiol 34, 2374–2383 (2024). https://doi.org/10.1007/s00330-023-10203-3
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DOI: https://doi.org/10.1007/s00330-023-10203-3