Factors Impacting Survival After Transarterial Radioembolization in Patients with Unresectable Intrahepatic Cholangiocarcinoma: A Combined Analysis of the Prospective CIRT Studies

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2024年2月6日

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Peter Reimer,
Valérie Vilgrain,
Dirk Arnold,
Tugsan Balli,
Rita Golfieri,
Romaric Loffroy,
Cristina Mosconi,
Maxime Ronot,
Christian Sengel,
Niklaus Schaefer,
Geert Maleux,
Graham Munneke,
Bora Peynircioglu,
Bruno Sangro,
Nathalie Kaufmann,
Maria Urdaniz,
Helena Pereira,
Niels de Jong,
Thomas Helmberger

摘要

Purpose

Transarterial radioembolization (TARE) with Yttrium-90 resin microspheres is a treatment option for patients with intrahepatic cholangiocarcinoma (ICC). However, optimising the timing of TARE in relation to systemic therapies and patient selection remains challenging. We report here on the effectiveness, safety, and prognostic factors associated with TARE for ICC in a combined analysis of the prospective observational CIRT studies (NCT02305459 and NCT03256994).

Methods

A combined analysis of 174 unresectable ICC patients enrolled between 2015 and 2020 was performed. Patient characteristics and treatment-related data were collected at baseline; adverse events and time-to-event data (overall survival [OS], progression-free survival [PFS] and hepatic PFS) were collected at every follow-up visit. Log-rank tests and a multivariable Cox proportional hazard model were used to identify prognostic factors.

Results

Patients receiving a first-line strategy of TARE in addition to any systemic treatment had a median OS and PFS of 32.5 months and 11.3 months. Patients selected for first-line TARE alone showed a median OS and PFS of 16.2 months and 7.4 months, whereas TARE as 2nd or further treatment-line resulted in a median OS and PFS of 12 and 9.3 months (p = 0.0028), and 5.1 and 3.5 months (p = 0.0012), respectively. Partition model dosimetry was an independent predictor for better OS (HR 0.59 [95% CI 0.37–0.94], p = 0.0259). No extrahepatic disease, no ascites, and < 6.1 months from diagnosis to treatment were independent predictors for longer PFS.

Conclusion

This combined analysis indicates that in unresectable ICC, TARE in combination with any systemic treatment is a promising treatment option.

Level of evidence: level 3, Prospective observational

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