Browsing by Author "Yeganeh, Mehdi"

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Mutations in STAT3 and diagnostic guidelines for hyper-IgE syndrome
(Mosby-Elsevier, 2010-02) Woellner, Cristina; Gertz, Edward Michael; Schaffer, Alejandro A.; Lagos, Macarena; Perro, Mario; Glocker, Erik Oliver; Pietrogrande, Maria Cristina; Cossu, Fausto; Franko, Josè Luis; Matamoros, Núria; Pietrucha, Barbara Maria; Heropolitańska-Pliszka, Edyta; Yeganeh, Mehdi; Moin, Mostafa; Español, Theresa; Ehl, Stephan; Gennery, Andrew R.; Abinun, Mario A.; Brȩborowicz, Anna; Niehues, Tim; Junker, Anne K.; Turvey, Stuart E.; Plebani, Alessandro; Sánchez, Berta; Garty, Ben Zion; Pignata, Claudio; Cancrini, Caterina; Litzman, Jiří; Sanal, Özden; Baumann, Ulrich; Bacchetta, Rosa; Hsu, Amy P.; Davis, Joie N.; Hammarström, Lennart L.G.; Davis, Edward Graham; Eren, Efrem; Arkwright, Peter D.; Moilanen, Jukka S.; Viemann, Dorothee; Khan, Sujoy; Máródi, László D.R.; Cant, Andrew James; Freeman, Alexandra F.; Puck, Jennifer M.; Holland, Steven M.; Grimbacher, Bodo; Kılıç, Sara Şebnem; Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı.; 0000-0001-8571-2581; AAH-1658-2021; 34975059200
Background: The hyper-IgE syndrome (HIES) is a primary immunodeficiency characterized by infections of the lung and skin, elevated serum IgE, and involvement of the soft and bony tissues. Recently, HIES has been associated with heterozygous dominant-negative mutations in the signal transducer and activator of transcription 3 (STAT-3) and severe reductions of T(H)17 cells. Objective: To determine whether there is a correlation between the genotype and the phenotype of patients with HIES and to establish diagnostic criteria to distinguish between STAT3 mutated and STAT3 wild-type patients. Methods: We collected clinical data, determined T(H)17 cell numbers, and sequenced STAT3 in 100 patients with a strong clinical suspicion of HIES and serum IgE > 1000 IU/mL. We explored diagnostic criteria by using a machine-learning approach to identify which features best predict a STAT3 mutation. Results: In 64 patients, we identified 31 different STAT3 mutations, 18 of which were novel. These included mutations at splice sites and outside the previously implicated DNA-binding and Src homology 2 domains. A combination of 5 clinical features predicted STAT3 mutations with 85% accuracy. T(H)17 cells were profoundly reduced in patients harboring STAT-3 mutations, whereas 10 of 13 patients without mutations had low (<1%) T(H)17 cells but were distinct by markedly reduced IFN-gamma-producing CD4(+)T cells. Conclusion: We propose the folio-wing diagnostic guidelines for STAT3-deficient HIES. Possible: IgE >1000IU/mL plus a weighted score of clinical features >30 based on recurrent pneumonia, newborn rash, pathologic bone fractures, characteristic face, and high palate. Probable: These characteristics plus lack of T(H)17 cells or a family history for definitive HIES. Definitive: These characteristics plus a dominant-negative heterozygous mutation in STAT3.
The extended clinical phenotype of 64 patients with dedicator of cytokinesis 8 deficiency
(Mosby-Elsevier, 2015-08-01) Engelhardt, Karin R.; Gertz, Michael E.; Keleş, Sevgi; Schaeffer, Alejandro A.; Sigmund, Elena C.; Glocker, Cristina; Saghafi, Shiva; Pourpak, Zahra; Ceja, Ruben; Sassi, Atfa; Graham, Laura E.; Massaad, Michel J.; Mellouli, Fethi; Ben-Mustapha, Imen; Khemiri, Monia; Kılıç, Sara Şebnem; Etzioni, Amos; Freeman, Alexandra F.; Thiel, Jens; Schulze, Ilka; Al-Herz, Waleed; Metin, Ayse; Sanal, Oezden; Tezcan, Ilhan; Yeganeh, Mehdi; Niehues, Tim; Dueckers, Gregor; Weinspach, Sebastian; Patiroglu, Turkan; Ünal, Ekrem; Dasouki, Majed; Yılmaz, Mustafa; Genel, Ferah; Aytekin, Caner; Kütükçüler, Necil; Somer, Ayper; Kılıç, Mehmet; Reisli, Ismail; Camcioğlu, Yıldız; Gennery, Andrew R.; Cant, Andrew J.; Jones, Alison; Gaspar, Bobby H.; Arkwright, Peter D.; Pietrogrande, Maria C.; Baz, Zeina; Al-Tamemi, Salem; Lougaris, Vassilios; Lefranc, Gerard; Megarbane, Andre; Boutros, Jeannette; Galal, Nermeen; Bejaoui, Mohamed; Barbouche, Mohamed-Ridha; Geha, Raif S.; Chatila, Talal A.; Grimbacher, Bodo; KILIÇ GÜLTEKİN, SARA ŞEBNEM; Uludağ Üniversitesi/Tıp Fakültesi/Pediatrik İmmünoloji Anabilim Dalı.; AAH-1658-2021
Background: Mutations in dedicator of cytokinesis 8 (DOCK8) cause a combined immunodeficiency (CID) also classified as autosomal recessive (AR) hyper-IgE syndrome (HIES). Recognizing patients with CID/HIES is of clinical importance because of the difference in prognosis and management.Objectives: We sought to define the clinical features that distinguish DOCK8 deficiency from other forms of HIES and CIDs, study the mutational spectrum of DOCK8 deficiency, and report on the frequency of specific clinical findings.Methods: Eighty-two patients from 60 families with CID and the phenotype of AR-HIES with (64 patients) and without (18 patients) DOCK8 mutations were studied. Support vector machines were used to compare clinical data from 35 patients with DOCK8 deficiency with those from 10 patients with AR-HIES without a DOCK8 mutation and 64 patients with signal transducer and activator of transcription 3 (STAT3) mutations.Results: DOCK8-deficient patients had median IgE levels of 5201 IU, high eosinophil levels of usually at least 800/mu L (92% of patients), and low IgM levels (62%). About 20% of patients were lymphopenic, mainly because of low CD4(+) and CD8(+) T-cell counts. Fewer than half of the patients tested produced normal specific antibody responses to recall antigens. Bacterial (84%), viral (78%), and fungal (70%) infections were frequently observed. Skin abscesses (60%) and allergies (73%) were common clinical problems. In contrast to STAT3 deficiency, there were few pneumatoceles, bone fractures, and teething problems. Mortality was high (34%). A combination of 5 clinical features was helpful in distinguishing patients with DOCK8 mutations from those with STAT3 mutations.Conclusions: DOCK8 deficiency is likely in patients with severe viral infections, allergies, and/or low IgM levels who have a diagnosis of HIES plus hypereosinophilia and upper respiratory tract infections in the absence of parenchymal lung abnormalities, retained primary teeth, and minimal trauma fractures.
Toll-like receptor stimulation induces higher tnf-α secretion in peripheral blood mononuclear cells from patients with hyper ige syndrome
(Karger, 2008-01-01) Yeganeh, Mehdi; Henneke, Philipp; Rezaei, Nima; Ehl, Stephan; Thiel, Doerte; Matamoros, Nuria; Pietrogrande, Cristina; Espanol, Teresa; Litzman, Jiri; Franco, Jose L.; Sanal, Ozden; Kılıç, Sara S.; Breborowicz, Anna; Plebani, Alessandro; Renner, Ellen; Rothenfusser, Simon; Hawn, Thomas R.; Woellner, Cristina; Grimbacher, Bodo; KILIÇ GÜLTEKİN, SARA ŞEBNEM; Uludağ Üniversitesi/Tıp Fakültesi/Pediatrik İmmünoloji Anabilim Dalı.; 0000-0002-9454-1603; 0000-0002-1926-5426; 0000-0001-8571-2581; 0000-0002-5398-1717; 0000-0001-9816-8538; 0000-0002-6897-6806; AAH-1658-2021
Hyper IgE syndromes (HIES) are primary immunodeficiency disorders of unknown pathogenesis. Patients are typically affected with 'cold' abscesses of the skin, recurrent cyst-forming pneumonia, chronic mucocutaneous candidiasis and other less frequent features such as progressive skeletal abnormalities. Defective signaling in the Toll-like receptor (TLR) pathways has been suggested as a responsible pathologic mechanism, however, in previous reports, 10 patients revealed no defect in inflammatory cytokine responses to different TLR ligands. Here, we report the increase in pro-inflammatory cytokines TNF-alpha and IL-8, following TLR2 and TLR4 stimulation in a larger cohort of 25 additional patients with HIES, and provide a meta-analysis of the TLR data in HIES. Copyright (C) 2008 S. Karger AG, Basel.