Electroacupuncture Combined With Paclitaxel Protein-bound and PD-1 Antibody for Second-line Treatment of HER2 Negative, pMMR/MSS Advanced Gastric Cancer

Electroacupuncture (EA) Combined With Paclitaxel Protein-bound (Chemo) and PD-1 Antibody (IO) for Second-line Treatment of HER2 Negative, pMMR/MSS Advanced Gastric Cancer. Electroacupuncture stimulates specific acupoints（dense-sparse wave，30min）d0, d1, d7, d8 + Paclitaxel Protein-bound (125mg/m2) d1, d8 + PD-1 Antibody (not limited to specific drugs，dosages should be calculated according to corresponding drug instructions) d1, Q3W. If the diseases are well controlled after 6 cycles, maintenance treatment, namely Electroacupuncture stimulates specific acupoints（dense-sparse wave，30min）d0, d1 + PD-1 Antibody (not limited to specific drugs，dosages should be calculated according to corresponding drug instructions) d1, Q3W, will be continually conducted until the diseases progress.