A Prospective Study: Sintilimab and R-CHOP in PMBCL Treatment

Sintilimab,200mg, d1, intravenous drip; Rituximab,375mg／㎡, d1,intravenous drip; Cyclophosphamide,750mg／㎡,d2,intravenous drip; Doxorubicin,50mg／㎡ （or Liposome doxorubicin ，40 mg／㎡）,d2,intravenous drip; Vincristine,1.4mg／㎡, d2（Maximum dose 2mg),intravenous drip; Prednisone, 60mg/ m2 , d1-d5,oral administration.