Figure 2. CAR T cell trials over time and geographical distribution.

(A) Timeline of cancer CAR T cell trials as listed in Datasets EV1 and EV2 distinguishing between ongoing number (dark blue bars) and newly initiated trials in the indicated year (light blue bars). (B) Geographical distribution of worldwide ongoing CAR T cells clinical trials (left) and distribution of trial sites of the ongoing European studies (right). Five studies are multi‐centric, of which four are multi‐country trials in Europe (Dataset EV5). Long‐term follow‐up studies are not included. Color code indicates the prevalence of trials from low (green) to high (red).