β-thalassemia gene therapy is based on the transfer of a human β-globin gene into autologous HSCs, which resolves the absence of compatible donors and eliminates the risk of GVHD and graft failure associated with allogeneic BMT.
Can thalassemia be cured by gene therapy?
Depending upon whether the genetic defects or deletion lies in transmission of α or β globin chain gene, thalassemias are classified into α and β-thalassemias. Thus, thalassemias could be cured by introducing or correcting a gene into the hematopoietic compartment or a single stem cell.
What treatment is used in the management of β thalassemia major?
Treatment may include: Regular blood transfusions. Medicines to reduce extra iron from your body (called iron chelation therapy) Surgery to remove the spleen, if needed.
How is beta thalassemia managed?
Management of patients with beta-thalassemia is based on adequate, safe blood transfusions (free of transfusion-transmitted diseases) and prevention of iron overload. Iron overload causes multiple endocrinopathies, contributes to osteoporosis, and is the cause of cardiac disease.
What type of gene therapy is used for thalassemia?
Called Zynteglo, the gene therapy is aimed at treating people with beta-thalassemia who are over 12 years of age and have any but the most severe form of the condition. Patients with beta-thalassemia often depend on receiving blood transfusions for their whole lives.
How Does gene therapy work for thalassemia?
How gene therapy for beta thalassemia works. Blood stem cells are collected from a patient and genetically edited outside the body to block the expression of the BCL11A gene, which normally shuts off the production of fetal hemoglobin shortly after birth.
What gene is thalassemia on?
Mutations in the HBB gene cause beta thalassemia. The HBB gene provides instructions for making a protein called beta-globin.
How do we treat patients with thalassemia major?
Standard treatments for patients with thalassemia major are blood transfusions and iron chelation.
- Blood transfusion involves injection of red blood cells through a vein to restore normal levels of healthy red blood cells and hemoglobin.
- Iron chelation is removal of excess iron from the body.
What type of mutation causes beta thalassemia?
Mutations in the HBB gene cause beta thalassemia. The HBB gene provides instructions for making a protein called beta-globin. Beta-globin is a component (subunit) of hemoglobin .
What is the management of thalassemia?
Management and Treatment Standard treatments for patients with thalassemia major are blood transfusions and iron chelation. Blood transfusion involves injection of red blood cells through a vein to restore normal levels of healthy red blood cells and hemoglobin.
Can Crispr treat thalassemia?
Summary: A new article reports two patients appear to have been cured of beta thalassemia and sickle cell disease after their own genes were edited with CRISPR-Cas9 technology. The two researchers who invented this technology received the Nobel Prize in Chemistry in 2020.
What is the genetic cause of beta thalassemia?
There are three main types of the disease: beta thalassemia major, intermedia, and minor. All of them happen because of a mutation (change) of the HBB gene. This is the most serious form of the disease and happens when you inherit two mutated copies of the HBB gene. Your child will likely get diagnosed with this type by the time he’s 2 years old.
How to test for beta thalassemia?
Several laboratory tests may be used to help detect and diagnose thalassemia: Complete blood count (CBC). The CBC is an evaluation of the cells in the blood. Among other things, the CBC determines the number of red blood cells present and how much hemoglobin is in them.
Is there any treatment for beta thalassemia major?
Currently, the standard protocol for treatment of Beta-Thalassemia major is lifelong blood transfusions along with regular iron chelation therapy either through infusion or oral medications. Bone marrow transplant with a suitable match is the only available cure currently.
How did beta thalassemia get its name?
Hemoglobin, which carries oxygen to all cells in the body, is made of two different parts, called alpha and beta. When thalassemia is called “alpha” or “beta,” this refers to the part of hemoglobin that isn’t being made . If either the alpha or beta part is not made, there aren’t enough building blocks to make normal amounts of hemoglobin.
