This clinical trial aims to test a new gene therapy in adults (18 to 35 years old) with beta thalassemia who require regular red cell transfusions. The study will evaluate the safety and efficacy of genetically engineered blood stem cells using a novel lentiviral vector that produces a high levels of a healthy beta globin. Several tests and procedures such as review of medical history, blood and urine tests, bone marrow aspirate/biopsy, heart ultrasound, electrocardiogram, magnetic resonance imaging (MRI) of the heart and liver, and lung tests will be done to find out if subjects are eligible to participate in this trial. If eligible, blood stem cells will be collected by apheresis. These stem cells will then have a healthy beta globin gene inserted. Subjects will then be hospitalized, and chemotherapy will be given to empty out the bone marrow. The stem cells, with the inserted gene (CHOP-ALS20), will then be given back to the subject. Subjects will be followed for side effects and to see if the inserted gene helps make hemoglobin and reduce or stop blood transfusions.

The ENERGY study is for adults (ages 18 and up) with warm Autoimmune Hemolytic Anemia (wAIHA) who are currently receiving treatment or have previously received treatment. The goal of the study is to see if the study drug, Nipocalimab is safe and effective in the treatment of wAIHA. Nipocalimab is an investigational medication designed to stop your immune system from destroying your red blood cells.

You may be able to join the study if you are:

• 18 years of age or older
• Diagnosed with wAIHA for at least 3 months
• Currently receiving treatment or have previously received treatment for wAIHA
• Have platelet counts of more than 30,000/ L and Hemoglobin less than 10 g/dL

Other study requirements will apply.

This clinical trial study uses a modified adeno-associated virus (AAV) to carry the human factor VIII gene to the liver. In the liver is where factor VIII protein is made. The study product, SPK-8011, is available only to participants in this research study. This product has not been approved yet for use in the general public. This will be the first hemophilia A gene transfer research study done in the United States. To learn more about the benefits and risks related to this study, please contact Dr. Lindsey George at (267) 425-0132. In order to participate in this study, you must be male, 18 years or older, have hemophilia A with FVIII activity levels less or equal to 2%, a history of bleeding that requires prophylaxis or on demand therapy, and no history of inhibitor to factor VIII. This study requires a number of visits over the course of 12 months. All costs related to participation in the study will either be covered or reimbursed by the Sponsor of the study, Spark Therapeutics, and participants will be compensated for their time.

This Phase 2 clinical research study is evaluating the safety and effectiveness of a once-daily oral investigational medicine that may improve anemia and reduce the need for red blood cell (RBC) transfusions among some patients who are chronically transfused. All participants enrolled in the study will receive the investigational medication.

We are currently enrolling individuals who meet the following criteria:*

• Regular RBC transfusions to prevent stroke or recurrence of stroke (Cohort A)
• Thalassemia and receiving regular RBC transfusions (Cohort B)
• Thalassemia and not receiving regular RBC transfusions (Cohort C)

There are additional eligibility requirements, which the investigator will explain to you.