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DOI: 10.1055/s-0043-1769051
Validation of the CRAFITY score in patients with hepatocellular carcinoma treated with atezolizumab and bevacizumab
Background We recently developed the CRP and AFP in Immunotherapy (CRAFITY) score in patients with HCC undergoing immune checkpoint inhibitor (ICI) therapy. As CRAFITY was developed in patients undergoing different ICI-based regimens, the score requires validation in patients treated with atezolizumab and bevacizumab (AB).
Method AB-treated patients with HCC at 15 centers in Europe and Asia between 12/2018-01/2023 were included. CRAFITY was derived from serum CRP and AFP values prior to AB initiation by adding one point each for CRP ≥1mg/dL and AFP ≥100ng/mL resulting in the following categories: 0 points = CRAFITY-low, 1 point = CRAFITY-intermediate, 2 points = CRAFITY-high.
Results Overall, 274 patients (66.1±11.0 years; male: n=224, 82%) were included. While 97 patients (35%) had CRAFITY-low, n=113 (41%) and n=64 (23%) had CRAFITY-intermediate and CRAFITY-high, respectively. Median OS and PFS were significantly worse in patients with higher CRAFITY scores (OS: low:23.4 (95%CI:14.8-32.0) vs. intermediate:15.9 (95%CI:11.9-19.9) vs. high:8.6 (95%CI:5.6-11.6) months, p<0.001; PFS: low:11.1 (95%CI:9.3-12.9) vs. intermediate:6.5 (95%CI:5.0-8.1) vs. high:3.2 (95%CI:2.7-3.7) months, p<0.001). Upon multivariable analyses, CRAFITY was independently associated with OS (aHR: intermediate vs. low:1.51 (95%CI:0.92-2.48), p=0.103; high vs. low:2.56 (95%CI:1.52-4.33), p<0.001) as well as PFS (aHR: intermediate vs. low:1.77 (95%CI:1.21-2.59), p=0.003; high vs. low:2.90 (95%CI:1.91-4.39), p<0.001).
CRAFITY was also significantly associated with radiological response (complete/partial response (CR/PR) / stable disease (SD) / progressive disease (PD), which was evaluable in 245 patients (89%): low:n=34 (38%)/n=45 (50%)/n=11 (12%) vs. intermediate:n=37 (37%)/n=28 (28%)/n=34 (34%) vs. high:n=12 (21%)/n=18 (32%)/n=26 (46%); p<0.001). Disease control rates (DCR) were 88% vs. 66% vs. 54% (p<0.001), respectively. Upon multivariable logistic regression, a higher CRAFITY score was independently associated with a lower probability of disease control (aOR: intermediate vs. low:0.25 (95%CI:0.11-0.55), p=0.001; high vs. low:0.15 (95%CI:0.06-0.35), p<0.001).
Conclusion The CRAFITY score identifies AB treated patients with a favourable prognosis and response and may help with patient counselling.
Publication History
Article published online:
24 May 2023
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