The Gut Microbiome in Recipients of CAR-T Cell Therapy

The purpose of this study is to understand how your gut plays a role in how well CAR T cell therapy works. Your gut is home to bacteria, which we call the gut microbiome. The gut microbiome can send signals to your immune cells, which may impact how well and how long CAR T cell therapy will last. We can find out what type of bacteria are in your gut microbiome by studying your stool. We can understand more about the signals sent to the immune system by studying your blood. We will ask for stool and blood at the same time points throughout your treatment. We will study the identities and function of the bacteria and immune cells to understand more about how these signals work during CAR T cell treatment.