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Base-pair substitution that causes sickle cell anemia. The gene defect is a single nucleotide mutation of the β-globin gene, which results in glutamate being substituted by valine at position 6 of the β-globin chain. [62] Hemoglobin S with this mutation is referred to as HbS, as opposed to the normal adult HbA.
Betibeglogene autotemcel, sold under the brand name Zynteglo, is a gene therapy for the treatment for beta thalassemia. [1] [5] [2] It was developed by Bluebird Bio and was given breakthrough therapy designation by the US Food and Drug Administration in February 2015.
Exagamglogene autotemcel is the first cell-based gene therapy treatment utilizing CRISPR/Cas9 gene editing technology to be approved by the US Food and Drug Administration (FDA). [13] The most common side effects include low levels of platelets and white blood cells, mouth sores, nausea, musculoskeletal pain, abdominal pain, vomiting, febrile ...
Lovotibeglogene autotemcel, sold under the brand name Lyfgenia, is a lentiviral gene therapy used for the treatment of sickle cell disease. [1] [3] [4] [5]The most common side effects include stomatitis (mouth sores of the lips, mouth, and throat), low levels of platelets, white blood cells, and red blood cells, and febrile neutropenia (fever and low white blood cell count), consistent with ...
Beta-thalassemia minor, intermedia and major [2] Causes: Mutations in the HBB gene [3] Risk factors: Family history: Diagnostic method: Blood smear, hemoglobin electrophoresis, iron & ferritin tests, DNA analysis [4] Differential diagnosis: Alpha thalassemia, sickle cell disease, iron deficiency anemia: Prevention: Preconception genetic ...
A single point mutation in this polypeptide chain, which is 147 amino acids long, results in the disease known as Sickle Cell Anemia. [18] Sickle-cell anemia is an autosomal recessive disorder that affects 1 in 500 African Americans, and is one of the most common blood disorders in the United States. [17]
The test uses the principles of gel electrophoresis to separate out the various types of hemoglobin and is a type of native gel electrophoresis.After the sample has been treated to release the hemoglobin from the red cells, it is introduced into a porous gel (usually made of agarose or cellulose acetate) and subjected to an electrical field, most commonly in an alkaline medium.
It is possible for a person to have both the gene for hemoglobin S (the form associated with sickle cell anemia) and the gene for hemoglobin C; this state is called hemoglobin SC disease, and is generally more severe than hemoglobin C disease, but milder than sickle cell anemia. [2]