Sickle cell anaemia is a lifelong condition that requires ongoing care, but advances in medical treatment and research are helping people manage symptoms, prevent complications, and live fuller lives than ever before.

Managing Life With Sickle Cell Anaemia: What Treatment Can Achieve

When someone receives a diagnosis of sickle cell anaemia, the focus of care shifts immediately to managing symptoms, preventing painful episodes, and reducing the risk of serious complications. The primary goals of treatment are to relieve pain when it occurs, prevent infections that can become life-threatening, manage anaemia (a condition where the body doesn’t have enough healthy red blood cells to carry oxygen), and protect vital organs from damage. Treatment also aims to improve quality of life so that people with this condition can participate in school, work, and daily activities with as few interruptions as possible.^[1][2]

The approach to treating sickle cell anaemia depends on several factors, including the person’s age, the severity of their symptoms, and whether they have experienced complications such as strokes or organ damage. Children often require different care than adults, and treatment plans are tailored to each individual’s needs. Some people experience frequent painful episodes, while others may have milder symptoms that require less intensive management. Regardless of the severity, all patients benefit from working closely with a healthcare team that specializes in blood disorders.^[4][6]

There are established, guideline-recommended treatments that have been used successfully for years, including medications and supportive care strategies. At the same time, researchers are actively exploring new therapies in clinical trials, including advanced treatments like gene therapy, which aim to address the root cause of the disease rather than just managing symptoms. Some of these newer treatments have recently been approved and are beginning to change the landscape of care for people with sickle cell anaemia.^[10][12]

Standard Treatments: Medications and Supportive Care

The foundation of sickle cell anaemia treatment includes several medications that help reduce the frequency of painful episodes and lower the risk of complications. One of the most important and widely used drugs is hydroxyurea, which has been approved since 1998. Hydroxyurea works by helping the body produce a type of haemoglobin that is less likely to cause red blood cells to become sickle-shaped. This medication can reduce the number of pain crises, decrease the need for blood transfusions, and lower the risk of developing acute chest syndrome, a dangerous lung complication. Hydroxyurea is usually taken as a capsule once a day, and it has been shown to be safe and effective in both children and adults.^[9][10]

Hydroxyurea does require regular monitoring because it can affect other blood cells, such as white blood cells and platelets, which are important for fighting infections and clotting blood. Patients taking this medication need regular blood tests to make sure their blood counts remain safe. Despite this need for monitoring, hydroxyurea is considered a cornerstone of treatment and is strongly recommended by medical guidelines for people with sickle cell anaemia.^[13]

Another medication approved for sickle cell disease is L-glutamine, marketed under the brand name Endari. This drug was approved in 2017 for patients aged five years and older. L-glutamine is an amino acid that acts as an antioxidant, helping to protect red blood cells from damage. It comes as a powder that can be mixed with water or food and is taken twice daily. Studies have shown that L-glutamine can reduce the frequency of painful episodes and lower the number of hospital visits for people with sickle cell disease.^[10][12]

A third medication, crizanlizumab (brand name Adakveo), was approved in 2019 for patients aged 16 and older. This drug is given as an intravenous infusion, meaning it is delivered directly into a vein. The infusion takes about 30 minutes and is given once a month after the first two doses. Crizanlizumab works by blocking a protein called P-selectin, which plays a role in causing sickle-shaped cells to stick to the walls of blood vessels. By preventing this sticking, the medication helps reduce blockages that lead to pain crises.^[10][12]

In addition to these disease-modifying medications, pain management is a critical part of standard care. When painful episodes occur, they are often treated at home with over-the-counter pain relievers such as paracetamol or ibuprofen. However, severe pain may require stronger prescription painkillers, including opioids like morphine, which are usually given in a hospital setting. Heating pads, warm baths, and staying well-hydrated can also help relieve pain during a crisis.^[9][13]

Preventing infections is another essential component of standard treatment. People with sickle cell anaemia are at higher risk of serious infections because the disease often damages the spleen, an organ that helps fight off bacteria. To protect against infections, children with sickle cell anaemia are typically given daily antibiotics, most commonly penicillin, starting in early infancy and continuing until at least age five. Some adults may also need to take antibiotics throughout their lives if they have had their spleen removed or have experienced pneumonia.^[10][14]

Vaccinations are also crucial for preventing infections. All patients with sickle cell anaemia should receive routine childhood vaccines, as well as annual flu shots and vaccines against pneumonia and meningitis. These vaccines help protect against bacteria and viruses that can cause severe illness in people with weakened immune systems.^[14][16]

Blood transfusions are sometimes necessary to treat or prevent complications. Transfusions increase the number of healthy red blood cells in the body, which can improve oxygen delivery to tissues and reduce the risk of stroke. Some people receive a single transfusion during a crisis, while others may need regular transfusions over many years. For children at high risk of stroke, regular blood transfusions can significantly reduce that risk.^[10][12]

Nutritional support is also part of standard care. Many patients are advised to take folic acid supplements, which help the body produce new red blood cells. Because red blood cells in sickle cell anaemia die off much faster than normal, the body needs extra folic acid to keep up with the demand. It’s important to note that sickle cell anaemia is not caused by iron deficiency, so iron supplements should not be taken unless specifically recommended by a doctor, as they can be harmful.^[13]

Innovative Treatments in Clinical Trials

Research into new treatments for sickle cell anaemia has accelerated in recent years, with several groundbreaking therapies now being tested in clinical trials or recently approved for use. Among the most exciting developments are gene therapies, which aim to correct the underlying genetic defect that causes sickle cell anaemia. In December 2023, two gene therapies were approved by the U.S. Food and Drug Administration, representing a transformative step forward in the treatment of this disease.^[10][12]

Gene therapy works by modifying a patient’s own blood-forming stem cells—cells that produce all types of blood cells. There are two main approaches being used. The first approach involves adding a modified gene into the patient’s stem cells. This new gene is designed to produce a healthy form of haemoglobin that can replace the abnormal sickle haemoglobin. The second approach involves editing a gene that is already present in the patient’s cells. This editing process activates the production of a type of haemoglobin that is normally only made before birth, called fetal haemoglobin. Fetal haemoglobin does not cause red blood cells to sickle, so increasing its production can dramatically reduce or even eliminate symptoms.^[10][12]

The process of receiving gene therapy is complex and intensive. First, stem cells are collected from the patient’s blood or bone marrow. These cells are then treated in a laboratory to add or edit the genes. Before the modified cells are returned to the patient, the patient undergoes chemotherapy to clear out the existing bone marrow cells. This step is necessary to make room for the new, genetically modified cells. Once the modified stem cells are infused back into the patient’s bloodstream, they travel to the bone marrow and begin producing healthy red blood cells. The entire process requires careful monitoring and can take several months.^[12]

Gene therapy is not suitable for everyone. It is a major medical procedure with significant risks, and it is currently recommended primarily for patients with severe forms of sickle cell disease who have not responded well to other treatments. Because the therapy involves chemotherapy, there are risks such as infection, infertility, and other side effects. However, for carefully selected patients, gene therapy offers the potential for a long-term cure or significant reduction in symptoms.^[12][13]

Another curative option that has been available for some time is stem cell transplantation, also known as bone marrow transplantation. This procedure involves replacing the patient’s diseased bone marrow with healthy bone marrow from a donor, usually a sibling or close family member who is a good genetic match. The donor’s stem cells produce normal red blood cells, effectively curing the patient of sickle cell anaemia. However, finding a suitable donor can be very difficult, and the procedure carries serious risks, including the possibility that the transplanted cells may attack the patient’s body, a condition called graft-versus-host disease. Because of these challenges, stem cell transplants are typically reserved for children and teenagers with severe disease who have a closely matched donor available.^[6][13]

Clinical trials are ongoing to test many other innovative treatments. Some studies are exploring new drugs that target different aspects of the disease process, such as medications that reduce inflammation or improve blood flow. Other trials are investigating ways to make stem cell transplants safer and more accessible by using donors who are not perfect genetic matches. Researchers are also studying combination therapies that use multiple drugs together to achieve better results than any single treatment alone.^[6]

Participation in clinical trials is an important option for people with sickle cell anaemia who want access to cutting-edge treatments. Clinical trials typically have three phases. Phase I trials test a new treatment in a small group of people to evaluate safety and determine the appropriate dose. Phase II trials involve more participants and focus on whether the treatment is effective at reducing symptoms or preventing complications. Phase III trials compare the new treatment to the current standard of care to see if it offers additional benefits. Patients who participate in trials may gain access to promising therapies before they are widely available, but they also need to understand the potential risks and uncertainties involved.^[6]

Clinical trials for sickle cell disease are being conducted in many countries, including the United States, Europe, and other regions. Eligibility for trials depends on factors such as age, disease severity, and previous treatments. People interested in participating can ask their healthcare provider for information about available trials or search online databases that list ongoing studies.^[6]

Most common treatment methods

• Medications to prevent complications
  • Hydroxyurea: A daily capsule that reduces the frequency of pain crises and lowers the need for blood transfusions by helping the body produce healthier red blood cells.
  • L-glutamine (Endari): A powder taken twice daily that acts as an antioxidant to protect red blood cells and reduce the number of painful episodes.
  • Crizanlizumab (Adakveo): A monthly intravenous infusion that blocks a protein involved in causing sickle cells to stick to blood vessel walls, reducing pain crises.
• Pain management
  • Over-the-counter pain relievers such as paracetamol and ibuprofen for mild to moderate pain during crises.
  • Stronger prescription painkillers, including opioids like morphine, used in hospitals for severe pain episodes.
  • Supportive measures such as heating pads, warm baths, and staying well-hydrated to help relieve pain at home.
• Infection prevention
  • Daily antibiotics, typically penicillin, given to children from infancy until at least age five to protect against serious bacterial infections.
  • Routine vaccinations, including annual flu shots and vaccines against pneumonia and meningitis, to prevent infections that can be life-threatening.
• Blood transfusions
  • Transfusions to increase the number of healthy red blood cells, improve oxygen delivery, and reduce the risk of stroke and other complications.
  • Regular transfusions for children at high risk of stroke, which can significantly lower that risk.
• Gene therapy
  • A new treatment approach that modifies a patient’s own stem cells by adding a gene to produce healthy haemoglobin or editing an existing gene to activate fetal haemoglobin production.
  • The process involves collecting stem cells, treating them in a laboratory, and then returning them to the patient after chemotherapy to clear the bone marrow.
  • Two gene therapies were approved in December 2023, offering potential for long-term symptom reduction or cure in carefully selected patients.
• Stem cell (bone marrow) transplantation
  • A curative procedure that replaces diseased bone marrow with healthy bone marrow from a closely matched donor, typically a sibling.
  • The donor’s stem cells produce normal red blood cells, potentially curing the disease.
  • Carries significant risks, including graft-versus-host disease, and is typically reserved for children and teenagers with severe disease who have a suitable donor.
• Nutritional support
  • Folic acid supplements to help the body produce new red blood cells, since sickle cells die off much faster than normal red blood cells.

Living Well With Sickle Cell Anaemia

Beyond medical treatments, people with sickle cell anaemia can take steps every day to reduce the risk of complications and improve their overall health. Staying well-hydrated is one of the most important self-care measures. Drinking plenty of fluids—about eight to ten glasses of water a day—helps prevent red blood cells from sickling and reduces the risk of painful episodes. People should drink even more fluids when they are exercising, spending time in hot weather, or feeling unwell.^[16][17]

Avoiding extreme temperatures is also crucial. Both very hot and very cold environments can trigger pain crises. People with sickle cell anaemia should dress appropriately for the weather, avoid sudden temperature changes such as jumping into a cold swimming pool, and be cautious in air-conditioned rooms. High altitudes, where oxygen levels are lower, can also trigger crises. While travelling by plane is generally safe because cabins are pressurized, activities like mountain climbing or visiting high-altitude cities should be approached with caution.^[17][24]

Physical activity is important for overall health, but people with sickle cell anaemia should exercise in moderation. Activities that cause extreme shortness of breath or exhaustion should be avoided. It’s important to rest when tired and to drink plenty of water during and after exercise. Children with sickle cell disease can and should participate in physical activity to stay healthy, but they should be encouraged to take breaks and not push themselves too hard.^[16][21]

Regular medical checkups are essential for preventing complications. Babies and young children should see a doctor frequently—every two to three months in the first year of life, and every three months from ages one to two. From age two onward, annual checkups are recommended, though more frequent visits may be needed if complications arise. These checkups allow doctors to monitor for early signs of problems such as organ damage, stroke risk, or eye problems.^[16][21]

People with sickle cell anaemia should also have regular eye exams starting at age ten to check for damage to the retina, the part of the eye that senses light. Sickle cells can block blood vessels in the eye, leading to vision loss if not detected and treated early. Specialized ultrasound tests can be used in children to assess the risk of stroke, and regular monitoring can help doctors decide if preventive treatments like blood transfusions are needed.^[14]

Avoiding infections is a daily priority. Simple steps like frequent hand-washing, preparing food safely, and staying up to date with vaccinations can make a big difference. People with sickle cell anaemia should seek medical attention promptly if they develop a fever, as even common illnesses can quickly become serious. Any fever over 38°C (or any increased temperature in a child) should be treated as an emergency and requires immediate medical evaluation.^[17][21]

Managing stress and getting enough sleep are also important for staying healthy. Stress can trigger pain crises, so learning relaxation techniques such as deep breathing, meditation, or listening to calming music can be helpful. Getting adequate rest allows the body to repair itself and can reduce the risk of complications.^[17][24]

Alcohol and smoking should be avoided. Alcohol can cause dehydration, which increases the risk of pain crises. Smoking can trigger acute chest syndrome, a dangerous lung complication that can be life-threatening. Both substances can also interfere with medications and worsen overall health.^[17][24]

Family support and mental health care are important aspects of living with a chronic condition. People with sickle cell anaemia may benefit from joining support groups where they can connect with others who understand the challenges of the disease. Counselling or therapy can help individuals cope with the emotional impact of living with a lifelong condition, including feelings of anxiety, depression, or frustration. Caregivers and family members also need support, as caring for someone with sickle cell anaemia can be demanding.^[16][24]

With proper care and treatment, many people with sickle cell anaemia live fulfilling lives. While the disease varies widely in severity from person to person, advances in treatment have significantly improved life expectancy. In the past, babies born with sickle cell anaemia rarely lived to adulthood, but today, thanks to early detection, better treatments, and improved supportive care, about half of people with the condition live into their 50s or beyond. Newer treatments, including gene therapy, offer hope for even better outcomes in the future.^[4][5]