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. 2020 Mar 30;8(1):69–75. doi: 10.14218/JCTH.2019.00050

Table 3. RETREAT score components and scoring criteria breakdown.

Characteristic Range of values RETREAT points
Alpha-fetoprotein at transplant in ng/mL
0-20 0
21-99 1
100-999 2
>1000 3
Microvascular invasion
Absent 0
Present 2
Largest active tumor length (cm) + number of active tumors
0 0
1.1-4.9 1
5-9.9 2
≥10 3