This study is looking at how well a special kind of cell treatment, called CART-19 cells, works for certain patients. CART-19 cells are cells that have been changed to help fight cancer. The study is split into two parts. In the second part, 20 people will get a specific amount of these cells. The cells are given over three days: a little on Day 1, more on Day 2, and the rest on Day 3. The main goal is to see if this amount is the best to use.

• Study Length: Participants need to be followed for at least 3 months after the first treatment.
• Visits: Participants will need to visit the clinic on three consecutive days for the treatment.
• Age: Check with researchers to see if you are the right age for this study.

This study is for people who might respond to this kind of treatment and have either completed three months of follow-up or stopped early due to certain reasons. If interested, please discuss with your doctor to see if this study might be right for you.

For more details, visit this link.