Pilot Study of Non-Viral, RNA-Redirected Autologous T Cells in Patients With Refractory or Relapsed Hodgkin Lymphoma

The study will enroll 10 evaluable patients. Evaluable patients are those who have received at least 1 of the 6 RNA CART19 doses at the protocol-specified level. Important safety data can be collected even if a patient receives only one RNA CART19 dose. Subjects (n = 10) will receive up to six IV doses of 8x105-1.5x106 RNA CART19 cells/kg/dose for subjects\<80kg and 1x108 RNA CART19 cells/dose (±20%) for subjects ≥80kg. The RNA CART19 doses and mid-treatment single dose cyclophosphamide will be administered on Mondays, Wednesdays or Fridays. Dosing can be initiated on any of those days. Subjects will be infused in a staggered fashion at two week intervals; that is, the next subject cannot be infused prior to two weeks since the last infusion of the previous subject.