South-Italy beta°-thalassemia: a novel deletion not removing the gamma-globin silencing element and with 3' breakpoint in a hsRTVL-H element, associated with beta°-thalassemia and high levels of HbF. (Articolo in rivista)

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  • South-Italy beta°-thalassemia: a novel deletion not removing the gamma-globin silencing element and with 3' breakpoint in a hsRTVL-H element, associated with beta°-thalassemia and high levels of HbF. (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.3324/haematol.2013.089722 (literal)
Alternative label
  • De Angioletti M1-3, Sabato V4, Musollino G1, Prezioso R1, Carestia C1, Lacerra G1. (2013)
    South-Italy beta°-thalassemia: a novel deletion not removing the gamma-globin silencing element and with 3' breakpoint in a hsRTVL-H element, associated with beta°-thalassemia and high levels of HbF.
    in Haematologica (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • De Angioletti M1-3, Sabato V4, Musollino G1, Prezioso R1, Carestia C1, Lacerra G1. (literal)
Pagina inizio
  • 98 (literal)
Pagina fine
  • 100 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • e98-e100 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 3 (literal)
Note
  • ubMe (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Istituto di Genetica e Biofisica \"Adriano Buzzati-Traverso\", Consiglio Nazionale delle Ricerche, Napoli 2ICCOM Consiglio Nazionale delle Ricerche, Sesto Fiorentino, Firenze 3Core Research Laboratory -Istituto Toscano Tumori, Firenze 4Ospedale \"Giovanni XXIII\", Bari, Italy (literal)
Titolo
  • South-Italy beta°-thalassemia: a novel deletion not removing the gamma-globin silencing element and with 3' breakpoint in a hsRTVL-H element, associated with beta°-thalassemia and high levels of HbF. (literal)
Abstract
  • The levels of fetal hemoglobin (HbF) are the major modifier of disease severity in patients with beta-thalassemia. Here is reported a patient with completely absent beta chains that at diagnosis was almost asymptomatic because high levels of HbF (10 g/dl). The patient was a genetic compound for the beta°-thalassemia codon 44 (-C) mutation and a novel beta°-thalassemia deletion. This 67 kb deletion was characterized by restriction mapping and inverse-PCR: the 5' breakpoint is within the delta-beta-intergene region at 2,134 bp from the 3' of the delta-globin gene polyA; the 3' breakpoint is within a hsRTVL-H element at 60 kb from the 3' of the beta-globin gene. None of polymorphisms associated with high levels of gamma-globin were present in this patient. Thus, the high HbF levels in this patient derive from this novel deletion, likely because it bring close the gamma-globin gene the LTR of the RTVL-H element together with the HPFH-2 and HPFH-1 enhancer elements. The comparison with others deletion of the beta locus associated with high levels of HbF expression, suggest that the action of the recently identified gamma-globin silencing region, preserved in this patient, can be overcome by the presence of enhancer elements. (literal)
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