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. 2023 Mar;18(2):221-233.
doi: 10.1007/s11523-023-00953-x. Epub 2023 Mar 15.

Real-World Data for Atezolizumab Plus Bevacizumab in Unresectable Hepatocellular Carcinoma: How Does Adherence to the IMbrave150 Trial Inclusion Criteria Impact Prognosis?

Margherita Rimini  1 Mara Persano  2 Toshifumi Tada  3 Goki Suda  4 Shigeo Shimose  5 Masatoshi Kudo  6 Jaekyung Cheon  7 Fabian Finkelmeier  8 Ho Yeong Lim  9 José Presa  10 Gianluca Masi  11   12 Changhoon Yoo  13 Sara Lonardi  14 Fabio Piscaglia  15 Takashi Kumada  16 Naoya Sakamoto  4 Hideki Iwamoto  5 Tomoko Aoki  6 Hong Jae Chon  7 Vera Himmelsbach  8 Tiziana Pressiani  17 Margarida Montes  10 Caterina Vivaldi  11   12 Caterina Soldà  14 Atsushi Hiraoka  18 Takuya Sho  4 Takashi Niizeki  5 Naoshi Nishida  6 Christoph Steup  8 Masashi Hirooka  19 Kazuya Kariyama  20 Joji Tani  21 Masanori Atsukawa  22 Koichi Takaguchi  23 Ei Itobayashi  24 Shinya Fukunishi  25 Kunihiko Tsuji  26 Toru Ishikawa  27 Kazuto Tajiri  28 Hironori Ochi  29 Satoshi Yasuda  30 Hidenori Toyoda  30 Chikara Ogawa  31 Takashi Nishimura  32 Takeshi Hatanaka  33 Satoru Kakizaki  34 Noritomo Shimada  35 Kazuhito Kawata  36 Fujimasa Tada  18 Hideko Ohama  18 Kazuhiro Nouso  20 Asahiro Morishita  21 Akemi Tsutsui  23 Takuya Nagano  23 Norio Itokawa  22 Tomomi Okubo  22 Taeang Arai  22 Michitaka Imai  27 Hisashi Kosaka  37 Atsushi Naganuma  38 Yohei Koizumi  20 Shinichiro Nakamura  3 Masaki Kaibori  37 Hiroko Iijima  32 Yoichi Hiasa  19 Valentina Burgio  39 Lorenza Rimassa  17   40 Mario Scartozzi  2 Stefano Cascinu  39 Andrea Casadei-Gardini  39
Affiliations

Real-World Data for Atezolizumab Plus Bevacizumab in Unresectable Hepatocellular Carcinoma: How Does Adherence to the IMbrave150 Trial Inclusion Criteria Impact Prognosis?

Margherita Rimini et al. Target Oncol. 2023 Mar.

Abstract

Background: Atezolizumab plus bevacizumab has recently been approved as a new first-line standard of care for patients with unresectable hepatocellular carcinoma (HCC).

Objective: We performed a real-world study to evaluate the impact of the IMbrave150 trial inclusion criteria on the safety and efficacy of treatment outside of clinical trials.

Methods: We analyzed patients treated with atezolizumab plus bevacizumab for unresectable HCC from four different countries. No specific inclusion and exclusion criteria were applied, except for the absence of previous systemic therapies for HCC. The entire population was split into two groups according to concordance with the inclusion criteria as reported in the IMbrave150 trial in 'IMbrave150-in' and 'IMbrave150-out' patients, and safety and efficacy in the two groups of patients were evaluated.

Results: Overall, 766 patients were included in the analysis: 561/766 (73%) in the 'IMbrave150-in' group and 205/766 (27%) in the 'IMbrave150-out' group. Median overall survival (OS) and median progression-free survival (PFS) were 16.3 versus 14.3 months (hazard ratio [HR] 0.48, 95% confidence interval [CI] 0.35-0.65; p < 0.0001] and 8.3 versus 6.0 months (HR 0.79, 95% CI 0.63-0.99; p = 0.0431) in 'IMbrave150-in' and 'IMbrave150-out' patients, respectively. Multivariate analysis confirmed that patients included in the 'IMbrave150-in' group had significantly longer OS compared with patients included in the 'IMbrave150-out' group (HR 0.76, 95% CI 0.47-0.97; p = 0.0195). In 'IMbrave150-in' patients, the albumin-bilirubin (ALBI) grade was not associated with OS, whereas in 'IMbrave150-out' patients, those with ALBI grade 1 reported a significant benefit in terms of OS compared with those with ALBI grade 2 (16.7 vs. 5.9 months; HR 4.40, 95% CI 2.40-8.08; p > 0.0001). No statistically significant differences were reported in the 'IMbrave150-in' and 'IMbrave150-out' groups in terms of safety profile.

Conclusion: Adherence to the IMbrave150 trial inclusion criteria favorably impacts the prognosis of patients receiving atezolizumab plus bevacizumab. Among patients who did not meet the IMbrave150 inclusion criteria, those with ALBI grade 1 could benefit from the treatment.

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