Step 1 → Hematology and Oncology Hemoglobinopathies and ThalassemiasPreview this topic sectionPreview the conditions. Plans unlock the full Step 1 details when you need them. Free Biochemistry Free Microbiology Plans Hemoglobinopathies and Thalassemias conditions Alpha-Thalassemia Beta-Thalassemia HbC Disease Sickle Cell Anemia