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Other symptoms of thalassemia include bone problems, an enlarged spleen, yellowish skin, pulmonary hypertension, and dark urine. [1] Slow growth may occur in children. [1] Clinically, thalassemia is classed as Transfusion-Dependent Thalassemia (TDT) or non-Transfusion-Dependent Thalassemia (NTDT), since this determines the principal treatment ...
A subset of Hb variants can cause severe disease when inherited in the homozygous or compound heterozygous state in combination with another structural variant or a thalassemia mutation. When clinical consequences occur, they may include anemia due to hemolysis or polycythemia due to alterations in the oxygen affinity of the abnormal Hb.
Family history and ancestry are factors that increase the risk of beta thalassemia. Depending on family history, if a person's parents or grandparents had beta thalassemia major or intermedia, there is a 75% (3 out of 4) probability (see inheritance chart at top of page) of the mutated gene being inherited by an offspring.
Hemoglobin H disease, also called alpha-thalassemia intermedia, is a disease affecting hemoglobin, the oxygen carrying molecule within red blood cells. It is a form of Alpha-thalassemia which most commonly occurs due to deletion of 3 out of 4 of the α-globin genes.
The condition is called alpha thalassemia trait; two α genes permit nearly normal production of red blood cells, but a mild microcytic hypochromic anemia is seen. The disease in this form can be mistaken for iron-deficiency anemia and treated inappropriately with iron. [3] [1] Alpha-thalassemia trait can exist in two forms: [1]
Heterozygous HbD-thalassemia, which causes the symptoms of thalassemia generally with mild anemia. Heterozygous HbS-D, which gives rise to sickle cell anemia, but generally milder and slower symptoms. Homozygous HbD/HbD, which is the rarest form, but is associated with HbD disease.
Symptoms may vary based on the severity of the condition and the most common symptom is fatigue. [3] Various diseases can lead to transfusion-dependent anemia, most notably myelodysplastic syndromes (MDS) and thalassemia. [4] [5] Due to the number of diseases that can cause transfusion-dependent anemia, diagnosing it is more complicated ...
Several thalassemia treatment centers have also received funding from the CDC as part of the Center's Prevention of Complications in Thalassemia project. The Food and Drug Administration (FDA). When a new treatment for thalassemia is submitted to the FDA for review, the Foundation makes certain that the concerns of the thalassemia community are ...