Question: What is (are) Sideroblastic anemia ?
Answer: Sideroblastic anemia is a heterogeneous group of blood disorders characterized by an impaired ability of the bone marrow to produce normal red blood cells. The iron inside red blood cells is inadequately used to make hemoglobin, despite adequate or increased amounts of iron. Abnormal red blood cells called sideroblasts are found in the blood of people with these anemias. Sideroblastic anemias are classified as hereditary, acquired, and reversible.
Source: GARD

Question: What causes Sideroblastic anemia ?
Answer: What causes sideroblastic anemia? The exact cause of sideroblastic anemia in many patients remains unknown. Reversible sideroblastic anemia can be caused by alcohol, isoniazid, pyrazinamide, cycloserine (a prescription antibiotic that may cause anemia, peripheral neuritis, or seizures by acting as a pyridoxine antagonist or increasing excretion of pyridoxine), chloramphenicol, or copper deficiency. The hereditary forms may be passed through families in autosomal recessive, autosomal dominant, or X-linked patterns.
Source: GARD