title: Neonatal screening and mass-spectrometric analysis of hemoglobin variants in Japan.
abstract: Using dried blood on filter paper, neonatal screening and mass-spectrometric analysis of hemoglobin variants were carried out in Osaka Prefecture, Japan. The following results emerged. (1) Of 140,597 newborns screened, 28 alpha (1/5,000) and 91 gamma (1/1,500) chain variants were detected. (2) Of 65 gamma chain variants examined, more than half (in 40 samples) were Hb F Yamaguchi (A gamma T 80 Asp----Asn). This fact explains the high incidence of gamma chain variants in the present study. (3) Two new gamma chain variants, Hb F Fuchu (G gamma 21 Glu----Gln) and Hb F Minoo (G gamma 72 Gly----Arg), were detected.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D014644:Genetic Variation; D006454:Hemoglobins / Q000032:analysis / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D007525:Isoelectric Focusing; D008403:Mass Screening; D013058:Mass Spectrometry
chemical_list: D006454:Hemoglobins