Efficacy and Safety of Anti-PD-1, Thymalfasin, and SOX in Neoadjuvant Treatment of cStage III Gastric/Gastroesophageal Junction Adenocarcinoma

200 mg, i.v., D1, Q3W

4.8mg,sc,biw

130 mg/m2, i.v., D1, Q3W

oral administration: body surface area \< 1.25, 40 mg each time; body surface area ≥ 1.25 to \< 1.5, 50 mg each time; body surface area ≥ 1.5, 60 mg each time, twice daily for each treatment cycle at D1-D14