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. 2020 Feb 21:11:239.
doi: 10.3389/fimmu.2020.00239. eCollection 2020.

Hematopoietic Cell Transplantation in Patients With Primary Immune Regulatory Disorders (PIRD): A Primary Immune Deficiency Treatment Consortium (PIDTC) Survey

Affiliations

Hematopoietic Cell Transplantation in Patients With Primary Immune Regulatory Disorders (PIRD): A Primary Immune Deficiency Treatment Consortium (PIDTC) Survey

Alice Y Chan et al. Front Immunol. .

Abstract

Primary Immune Regulatory Disorders (PIRD) are an expanding group of diseases caused by gene defects in several different immune pathways, such as regulatory T cell function. Patients with PIRD develop clinical manifestations associated with diminished and exaggerated immune responses. Management of these patients is complicated; oftentimes immunosuppressive therapies are insufficient, and patients may require hematopoietic cell transplant (HCT) for treatment. Analysis of HCT data in PIRD patients have previously focused on a single gene defect. This study surveyed transplanted patients with a phenotypic clinical picture consistent with PIRD treated in 33 Primary Immune Deficiency Treatment Consortium centers and European centers. Our data showed that PIRD patients often had immunodeficient and autoimmune features affecting multiple organ systems. Transplantation resulted in resolution of disease manifestations in more than half of the patients with an overall 5-years survival of 67%. This study, the first to encompass disorders across the PIRD spectrum, highlights the need for further research in PIRD management.

Keywords: autoimmunity; genetics; hematopoietic cell transplant; immune dysregulation; primary immune deficiencies.

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Figures

Figure 1
Figure 1
Clinical Manifestations of PIRD Patients. (A) PIRD patients have a range of clinical manifestations. Hatched bars represent the type of immune dysregulation [i.e., overactive immune features (autoimmunity, autoinflammation, lymphoproliferation) or underactive immune features (immunodeficiency)] and solid bars represent organ involvement. (B) Heat map of the clinical manifestations (rows) in the disease groups (columns). Color indicates the percentage of patients within that disease group that have the particular clinical manifestation. Right bar represents the color scaling. APDS, activated PI3K delta syndrome; CID, combined immunodeficiency; CVID, common variable immunodeficiency; IBD, inflammatory bowel disease; Innate, disorders of innate immunity; LPD, lymphoproliferative disorder; NFKB, nuclear factor kappa-light-chain-enhancer of activated B cells disorders; Tregopathies, T regulatory cell disorders.
Figure 2
Figure 2
HCT Outcomes in patients with PIRD. (A) Bar graph illustrating the resolution of disease at any point post-HCT in each of the disease groups based on percentages within the group. Numbers represent patients in each subgroup. (B) Kaplan-Meier estimate of survival in PIRD patients undergoing HCT. Dotted lines represent 95% confidence interval.

References

    1. Bousfiha A, Jeddane L, Picard C, Ailal F, Bobby Gaspar H, Al-Herz W, et al. The 2017 IUIS phenotypic classification for primary immunodeficiencies. J Clin Immunol. (2018) 38:129–43. 10.1007/s10875-017-0465-8 - DOI - PMC - PubMed
    1. Gambineri E, Ciullini Mannurita S, Hagin D, Vignoli M, Anover-Sombke S, DeBoer S, et al. Clinical, immunological, and molecular heterogeneity of 173 patients with the phenotype of immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome. Front Immunol. (2018) 9:2411. 10.3389/fimmu.2018.02411 - DOI - PMC - PubMed
    1. Barzaghi F, Amaya Hernandez LC, Neven B, Ricci S, Kucuk ZY, Bleesing JJ, et al. Long-term follow-up of IPEX syndrome patients after different therapeutic strategies: an international multicenter retrospective study. J Allergy Clin Immunol. (2018) 141:1036–49.e5. 10.1016/j.jaci.2017.10.041 - DOI - PMC - PubMed
    1. Walter JE, Farmer JR, Foldvari Z, Torgerson TR, Cooper MA. Mechanism-based strategies for the management of autoimmunity and immune dysregulation in primary immunodeficiencies. J Allergy Clin Immunol Pract. (2016) 4:1089–100. 10.1016/j.jaip.2016.08.004 - DOI - PMC - PubMed
    1. Griffith LM, Cowan MJ, Notarangelo LD, Kohn DB, Puck JM, Shearer WT, et al. Primary immune deficiency treatment consortium (PIDTC) update. J Allergy Clin Immunol. (2016) 138:375–85. 10.1016/j.jaci.2016.01.051 - DOI - PMC - PubMed

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