Accepted: 1 August 2019
First Online: 20 September 2019
: J.A.B. and Q.T. acknowledge support from the Juvenile Diabetes Research Foundation, Caladrius Biosciences, Becton, Dickinson and Company (BD), Juno Therapeutics and Pfizer. L.M.R.F. has patents and pending patents on genome editing of T cells, haematopoietic stem cells and pluripotent stem cells. J.A.B. and Q.T. have patents and pending patents on polyclonal and antigen-specific regulatory T cells and consult for Third Rock Ventures and Juno Therapeutics in this area. J.A.B. serves on the board of Pfizer. Y.D.M. has no competing interests.