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EHA recommendations for preconceptual and antenatal screening and prenatal diagnosis for hemoglobinopathies
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Thalassemia and sickle cell disease (SCD) are among the most common monogenic disorders worldwide. They cause chronic hemolytic anemia, the consequences and prognosis of which vary considerably depending on the genetic characteristics of patients and the healthcare system in their country of residence. Both diseases are autosomal recessive in their transmission, with carriers generally being asymptomatic. Informing carriers of thalassemia or SCD about reproductive risks and choices, while taking into account cultural and religious considerations, is a priority within global strategies to improve outcomes for these diseases. The European Hematology Association (EHA)'s Topic In Focus (TIF) Hemoglobinopathies Group created a focus group of hematologists, patients, anthropologists, and an obstetrician from Europe, the Middle East, India, and Africa. The Group considered that preconceptual screening tests would correspond to tests conducted before pregnancy (screening for carriers before marriage/conception), antenatal screening referred to tests completed on pregnant women, and prenatal diagnosis referred to tests performed on the fetus. It proposed guidelines addressing optimal timing of screening, appropriate laboratory tests, and communication strategies, taking into account the great diversity of regions and cultures where thalassemia and SCD are present. A main discussion point was that no recommendations would be given for couples about reproductive decisions, and that the aim was to present the existing and available options in different countries. Eight questions were examined using available literature, leading to the formulation of seven recommendations, which were submitted to a vote using the Delphi method. Consensus agreement was obtained for all recommendations.
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John Wiley and Sons Inc.