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Table 2 Relationship between body surface area and dose of S-1

From: A multicenter phase III study comparing Simultaneous Integrated Boost (SIB) radiotherapy concurrent and consolidated with S-1 versus SIB alone in elderly patients with esophageal and esophagogastric cancer – the 3JECROG P-01 study protocol

Body surface area (m2) Initial dose
<1.25 40 mg, bid
≥1.25~<1.50 50 mg, bid
≥1.5 60 mg, bid