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    Clinical, immunologic, and genetic characteristics of 148 patients with natural killer cell deficiency
    (Elsevier BV, 2025-05)
    Manar Abdalgani
    ;
    Evelyn R. Hernandez
    ;
    Luis A. Pedroza
    ;
    Ivan K. Chinn
    ;
    Lisa R. Forbes Satter
    Scopus© Citations 1  2
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    Immune Dysregulation Mimicking Systemic Lupus Erythematosus in a Patient With Lysinuric Protein Intolerance: Case Report and Review of the Literature
    (2021)
    Josefina Longeri Contreras
    ;
    Mabel A. Ladino
    ;
    Katherine Aránguiz
    ;
    Gonzalo P. Mendez
    ;
    Zeynep Coban-Akdemir
    <jats:p>Lysinuric protein intolerance (LPI) is an inborn error of metabolism caused by defective transport of cationic amino acids in epithelial cells of intestines, kidneys and other tissues as well as non-epithelial cells including macrophages. LPI is caused by biallelic, pathogenic variants in <jats:italic>SLC7A7</jats:italic>. The clinical phenotype of LPI includes failure to thrive and multi-system disease including hematologic, neurologic, pulmonary and renal manifestations. Individual presentations are extremely variable, often leading to misdiagnosis or delayed diagnosis. Here we describe a patient that clinically presented with immune dysregulation in the setting of early-onset systemic lupus erythematosus (SLE), including renal involvement, in whom an LPI diagnosis was suspected post-mortem based on exome sequencing analysis. A review of the literature was performed to provide an overview of the clinical spectrum and immune mechanisms involved in this disease. The precise mechanism by which ineffective amino acid transport triggers systemic inflammatory features is not yet understood. However, LPI should be considered in the differential diagnosis of early-onset SLE, particularly in the absence of response to immunosuppressive therapy.</jats:p>
      5Scopus© Citations 18
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    HEM1 deficiency disrupts mTORC2 and F-actin control in inherited immunodysregulatory disease
    (2020)
    Sarah A. Cook
    ;
    William A. Comrie
    ;
    POLI HARLOWE, MARIA CECILIA BERTA  
    ;
    Morgan Similuk
    ;
    Andrew J. Oler
    <jats:title>An inherited disorder makes WAVEs</jats:title> <jats:p> The WAVE regulatory complex (WRC) is a multiunit complex that regulates actin cytoskeleton formation. Although other actin-regulatory proteins modulate human immune responses, the precise role for the WRC has not yet been established. Cook <jats:italic>et al.</jats:italic> studied five patients from four unrelated families who harbor missense variants of the gene encoding the WRC component HEM1. These patients presented with recurrent infections and poor antibody responses, along with enhanced allergic and autoimmune disorders. HEM1 was found to be required for the regulation of cortical actin and granule release in T cells and also interacted with a key metabolic signaling complex contributing to the disease phenotype. By linking these interactions to immune function, this work suggests potential targets for future immunotherapies. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6500" page="202" related-article-type="in-this-issue" vol="369" xlink:href="10.1126/science.aay5663">202</jats:related-article> </jats:p>
      10Scopus© Citations 94
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    Partial loss-of-function mutations in GINS4 lead to NK cell deficiency with neutropenia
    (2022)
    Matilde I. Conte
    ;
    M. Cecilia Poli
    ;
    Angelo Taglialatela
    ;
    Giuseppe Leuzzi
    ;
    Ivan K. Chinn
      9Scopus© Citations 13
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    Genetic errors of immunity distinguish pediatric nonmalignant lymphoproliferative disorders
    (2022)
    Lisa R. Forbes
    ;
    Olive S. Eckstein
    ;
    Nitya Gulati
    ;
    Erin C. Peckham-Gregory
    ;
    Nmazuo W. Ozuah
      14Scopus© Citations 15
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    Failing to Make Ends Meet: The Broad Clinical Spectrum of DNA Ligase IV Deficiency. Case Series and Review of the Literature
    (2019)
    Aidé Tamara Staines Boone
    ;
    Ivan K. Chinn
    ;
    Carmen Alaez-Versón
    ;
    Marco A. Yamazaki-Nakashimada
    ;
    Karol Carrillo-Sánchez
      2Scopus© Citations 32
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      4Scopus© Citations 27