[Neonatal screening for sickle cell anemia: evaluation of a five-year experience in an area of northern Paris].

UNLABELLED:We report a five-year experience of targeted neonatal screening for sickle cell disease in the northern part of the Paris area as well as the follow-up procedure of screened patients. POPULATION:This geographic area in France is characterized by a high frequency of populations at risk for sickle cell disease. RESULTS:Among 115,480 tested newborns, 250 patients were diagnosed (frequency: 1/462). The quality of the screening was attested by the high frequency (5.34%) of newborn carriers for a hemoglobin abnormality (n = 6168). We developed an optimized strategy which avoids the majority of pitfalls (false positive and false negative responses), except for S/HPFH. More than 95% of sickle cell disease was followed, the majority by medical sickle cell disease experts from hospitals. Only two deaths were recorded during this time period. CONCLUSION:We demonstrate the efficiency of targeting the proposed methodological strategy and the follow-up of affected newborns, a major argument demonstrating the importance of newborn screening.