Tislelizumab Combined With Anlotinib and Chemotherapy (XELOX) in the Treatment of Advanced Gastric or Gastroesophageal Junction Adenocarcinoma (TALENT)

Subjects will be treated with BGB A317 200 mg IV on Day 1 during each 21-day cycle. BGB A317 will be administered until disease progression, intolerable toxicity, or treatment discontinuation for any other reason

oral administration daily d1-d14, q3w;

30 mg/m² IV on Day 1 during each 21-day cycle. during each 21-day cycle

1000 mg/m² orally twice daily (bid) Days 1 through 14 (14 days total) during each 21-day cycle. Capecitabine will be administered until disease progression, intolerable toxicity, or treatment discontinuation for any other reason.