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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Haematologica
2015 ; 100
(7
): 978-88
Nephropedia Template TP
gab.com Text
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English Wikipedia
The syndrome of hemophagocytic lymphohistiocytosis in primary immunodeficiencies:
implications for differential diagnosis and pathogenesis
#MMPMID26022711
Bode SF
; Ammann S
; Al-Herz W
; Bataneant M
; Dvorak CC
; Gehring S
; Gennery A
; Gilmour KC
; Gonzalez-Granado LI
; Groß-Wieltsch U
; Ifversen M
; Lingman-Framme J
; Matthes-Martin S
; Mesters R
; Meyts I
; van Montfrans JM
; Pachlopnik Schmid J
; Pai SY
; Soler-Palacin P
; Schuermann U
; Schuster V
; Seidel MG
; Speckmann C
; Stepensky P
; Sykora KW
; Tesi B
; Vraetz T
; Waruiru C
; Bryceson YT
; Moshous D
; Lehmberg K
; Jordan MB
; Ehl S
Haematologica
2015[Jul]; 100
(7
): 978-88
PMID26022711
show ga
Hemophagocytic lymphohistiocytosis is a hyperinflammatory syndrome defined by
clinical and laboratory criteria. Current criteria were created to identify
patients with familial hemophagocytic lmyphohistiocytosis in immediate need of
immunosuppressive therapy. However, these criteria also identify patients with
infection-associated hemophagocytic inflammatory states lacking genetic defects
typically predisposing to hemophagocytic lymphohistiocytosis. These patients
include those with primary immunodeficiencies, in whom the pathogenesis of the
inflammatory syndrome may be distinctive and aggressive immunosuppression is
contraindicated. To better characterize hemophagocytic inflammation associated
with immunodeficiencies, we combined an international survey with a literature
search and identified 63 patients with primary immunodeficiencies other than
cytotoxicity defects or X-linked lymphoproliferative disorders, presenting with
conditions fulfilling current criteria for hemophagocytic lymphohistiocytosis.
Twelve patients had severe combined immunodeficiency with <100/?L T cells, 18 had
partial T-cell deficiencies; episodes of hemophagocytic lymphohistiocytosis were
mostly associated with viral infections. Twenty-two patients had chronic
granulomatous disease with hemophagocytic episodes mainly associated with
bacterial infections. Compared to patients with cytotoxicity defects, patients
with T-cell deficiencies had lower levels of soluble CD25 and higher ferritin
concentrations. Other criteria for hemophagocytoc lymphohistiocytosis were not
discriminative. Thus: (i) a hemophagocytic inflammatory syndrome fulfilling
criteria for hemophagocytic lymphohistiocytosis can be the initial manifestation
of primary immunodeficiencies; (ii) this syndrome can develop despite severe
deficiency of T and NK cells, implying that the pathophysiology is distinct and
not appropriately described as "lympho"-histiocytosis in these patients; and
(iii) current criteria for hemophagocytoc lymphohistiocytosis are insufficient to
differentiate hemophagocytic inflammatory syndromes with different pathogeneses.
This is important because of implications for therapy, in particular for
protocols targeting T cells.