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@ARTICLE{Allard:177243,
author = {P. Allard and N. Alhaj$^*$ and S. Lobitz and H. Cario and
A. Jarisch and R. Grosse and L. Oevermann and D. Hakimeh and
L. Tagliaferri and E. Kohne and A. Kopp-Schneider$^*$ and A.
E. Kulozik and J. B. Kunz},
title = {{G}enetic modifiers of fetal hemoglobin affect the course
of sickle cell disease in patients treated with
hydroxyurea.},
journal = {Haematologica},
volume = {107},
number = {7},
issn = {1592-8721},
address = {Pavia},
publisher = {Ferrata Storti Found},
reportid = {DKFZ-2021-02377},
pages = {1577-1588},
year = {2022},
note = {2022 Jul 1;107(7):1577-1588},
abstract = {The course of sickle cell disease (SCD) is modified by
polymorphisms boosting fetal hemoglobin (HbF) synthesis.
However, it has remained an open question how these
polymorphisms affect patients who are treated with the
HbF-inducing drug hydroxyurea/hydroxycarbamide. The German
SCD registry offers the opportunity to answer this question,
because $>90\%$ of patients are treated according to
national guidelines recommending the use of hydroxyurea in
all patients above 2 years of age. We analyzed the modifying
effect of HbF-related genetic polymorphisms in 417 patients
with homozygous SCD >2 years who received hydroxyurea. HbF
levels were correlated with higher total hemoglobin levels,
lower rates of hemolysis, a lower frequency of painful
crises and of red blood cell transfusions. The minor alleles
of the polymorphisms in the γ-globin promoter (rs7482144),
BCL11A (rs1427407) and HMIP (rs66650371) were strongly
associated with increased HbF levels. However, these
associations did not translate into lower frequencies of
vasoocclusive events that did not differ between patients
either carrying or not carrying the HMIP and BCL11A
polymorphisms. Patients on hydroxyurea carrying the γ-
globin promoter polymorphism demonstrated substantially
higher hemoglobin levels (p.},
cin = {C060},
ddc = {610},
cid = {I:(DE-He78)C060-20160331},
pnm = {313 - Krebsrisikofaktoren und Prävention (POF4-313)},
pid = {G:(DE-HGF)POF4-313},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34706496},
doi = {10.3324/haematol.2021.278952},
url = {https://inrepo02.dkfz.de/record/177243},
}