IGF1 and acromegaly: On the contrary, in respect of baseline IGF-1 levels, a lower probability of not controlling acromegaly was observed only in patients with baseline IGF-1 value <300 μg/L (ES = 0.24, 95% CI: 0.20–0.29) or between 300 and <500 μg/L (ES = 0.36, 95% CI: 0.32–0.40).