Even US-approved CAR T-cell is currently so toxic with a high chance of severe adverse effects that it should only be used as a last resort treatment. From a linked article:

  “Right now it is heroic medicine,” he says — a grueling treatment deployed only in people for whom all else has failed. 
  “Patients are taken sometimes to within an inch of their lives.”

I feel like China's health care system is currently in a strange/incapable position to decide when all else has truly failed, not when plenty of basic medication is impossible to get, or not covered under any insurance.