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. 2021 Feb 8;23(7):1139–1147. doi: 10.1093/neuonc/noab019

Table 3.

Proposal of a Response Pattern Classification at 6 months

Pattern Volume Response Undertreatment Pretreatment GR Range Undertreatment
GR Range
Clinical Impact
1 Decrease ≥+10%/
6 months
Volume decrease
≥ –25%/6 months
Clinical benefit
2A Stabilization ≥+10%/6 months Volume decrease
≤–25%/6 months
and GR ≤ +10%/6 months
Clinical benefit
2B Slight increase
with GR slowdown
>+30%/6 months +10% ≤ GR ≤ +30%/6 months Likely clinical benefit
3A Persistent slight increase ≥+10%/6 months
<+30%/6 months
≥+10%/6 months
<+30%/6 months
No or modest clinical interest
3B Persistent high increase ≥+30%/6 months >+30%/6 months No or modest clinical interest

Abbreviation: GR, growth rate.