Gene Therapy for Sickle Cell Disease

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Duke Health is one of the few centers in North Carolina to offer a new, FDA-approved gene therapy that can help alleviate severe pain and other serious complications associated with sickle cell disease. Duke was actively involved in clinical trials for this revolutionary new treatment, which is similar to stem cell transplantation using donor cells (allogeneic) but does not require a bone marrow donor and is not associated with many of the potential complications of stem cell transplantation. 

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Gene Therapy to Prevent Sickling

Gene therapy replaces or modifies abnormal genes to treat or cure disease. During gene therapy for sickle cell disease, cells are removed from your blood, re-engineered in a special facility, and returned to your body through an infusion. The treatment changes parts of your DNA so your body can create healthy, normally shaped red blood cells. This allows your blood to flow freely, mitigating the pain and organ damage that often occur in people with sickle cell disease.
 

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Duke Health offers locations throughout the Triangle. Find one near you.

The Gene Therapy Process

A Comprehensive Evaluation

You will undergo a thorough evaluation with Duke sickle cell disease and stem cell transplant specialists to determine if gene therapy is right for you. You may be a candidate if you are at least 12 years old and experience repeated pain events -- also called vaso-occlusive crises. If you have had a stroke or are at increased risk for stroke, gene therapy may not be recommended. Your evaluation will also include meeting with a financial counselor to determine whether your health insurance covers this new therapy.

Apheresis

If gene therapy is an appropriate option, the first step is to receive infusions of healthy, non-sickling blood for 60 days. This is followed by apheresis. During this procedure, blood is drawn from your body, filtered to collect your stem cells (which are instrumental in creating new blood cells), and returned to your body. In some cases, apheresis may need to be repeated to collect enough stem cells. The cells will be sent to a specialized manufacturing facility, where they will be altered to create your personalized gene therapy.

Waiting for Gene Therapy

It may take ten weeks to six months after your cells are collected to manufacture, test, and send your personalized gene therapy treatment back to Duke. It is important that you stay healthy during this time. If you are not receiving care for sickle cell disease at Duke, we will coordinate care with doctors closer to your home.

Chemotherapy

Once we receive your gene therapy treatment, you will undergo chemotherapy to make room in your blood and bone marrow for your manufactured cells. This treatment will take place in the hospital where you will stay until you have recovered from any side effects of chemotherapy. This will allow your team of providers to monitor your condition and promptly address any issues. 

Gene Therapy Infusion and Monitoring

You’ll receive the gene therapy infusion through an IV placed in your arm. It will take place in the hospital and will last about 10 minutes. Afterward, your doctors will watch for side effects. Because the manufactured cells originated from your own body, you are not at risk for graft-versus-host disease. However, your immune system will need time to recover, so you will stay in the hospital until your medical team determines it is safe for you to go home.  A typical stay is from three to six weeks.

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After Gene Therapy for Sickle Cell Disease

After about four weeks, the transplanted stem cells begin producing new blood cells. At this time, you will meet with the discharge nurse and others to begin planning for life as an outpatient. Your Duke providers will stay in close contact with your home sickle cell care team and will always be available for advice.

Staying Local

For about one to three months after gene therapy, some people -- mostly children -- will need to stay close to Duke. This ensures easy access to your medical team should you experience any health problems. After discharge, you will visit the outpatient clinic for frequent checkups. Duke Patient Information Services will work with you and your loved ones to find nearby affordable lodging as needed. Staff can also check to see if you’re eligible for financial assistance for housing.

If You Have an Emergency

Duke’s FDA-approved Risk Evaluation and Mitigation Strategy Program can address any risks and side effects associated with gene therapy. If you have a medical emergency during your recovery, you’ll use a special ID card to show emergency room staff and providers that you are a gene therapy patient. This will help our team provide you with specialized treatment.

Consistently Ranked Among the Nation’s Best Hospitals

Duke University Hospital is proud of our team and the exceptional care they provide. They are why we are once again recognized as the best hospital in North Carolina, and nationally ranked in 11 adult and 10 pediatric specialties by U.S. News & World Report for 2024–2025.

Why Choose Duke

One of the Few Centers in North Carolina to Offer Gene Therapy for Sickle Cell Disease

Our providers led clinical trials on this treatment and took part in specialized training to administer gene therapy. This means you and your family can feel confident that your providers are among the country’s leaders in the field.

An Experienced Team of Sickle Cell Disease Experts

Our sickle cell disease specialists have a long history of caring for people with sickle cell disease and partnering with other centers to coordinate complex care. We routinely work with diverse teams of providers -- including stem cell transplant and cellular therapy specialists -- to ensure people with sickle cell disease receive the best care possible. We are dedicated to investigating new and effective therapies for sickle cell disease with the ultimate goal of finding a cure accessible to all.

Dedicated Inpatient Units

We offer inpatient units designed specifically for people receiving gene therapy, stem cell transplants, cellular therapies, and for other patients with weakened immune systems. These units are some of the largest in the country and are equipped with dedicated ventilation systems to reduce the risk for infections. Our family-friendly pediatric unit includes a large activity room, patient rooms with accommodations for caregivers, a common kitchen, washer and dryer facilities, and more.

This page was medically reviewed on 01/09/2024 by