Volume 34, Issue 10 e14021
ORIGINAL ARTICLE

Persistent hypogammaglobulinemia in pediatric solid organ transplant recipients

Rebecca Pellett Madan

Corresponding Author

Rebecca Pellett Madan

Department of Pediatrics, The Children’s Hospital at Montefiore and Albert Einstein College of Medicine, Bronx, NY, USA

Department of Pediatrics, New York University Grossman School of Medicine and Hassenfeld Children's Hospital at NYU Langone, New York, NY, USA

Correspondence

Rebecca Pellett Madan, Department of Pediatrics, New York University Grossman School of Medicine, 550 First Avenue, New York, New York, 19916, USA

Email: [email protected]

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Rhiannon R. Penkert

Rhiannon R. Penkert

Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA

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Sherri L. Surman

Sherri L. Surman

Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA

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Bart G. Jones

Bart G. Jones

Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA

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James Houston

James Houston

Department of Neurology, St. Jude Children’s Research Hospital, Memphis, TN, USA

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Jacqueline M. Lamour

Jacqueline M. Lamour

Department of Pediatrics, The Children’s Hospital at Montefiore and Albert Einstein College of Medicine, Bronx, NY, USA

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Marcela Del Rio

Marcela Del Rio

Department of Pediatrics, The Children’s Hospital at Montefiore and Albert Einstein College of Medicine, Bronx, NY, USA

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Betsy C. Herold

Betsy C. Herold

Department of Pediatrics, The Children’s Hospital at Montefiore and Albert Einstein College of Medicine, Bronx, NY, USA

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Julia L. Hurwitz

Julia L. Hurwitz

Department of Infectious Diseases, St. Jude Children’s Research Hospital, Memphis, TN, USA

Department of Microbiology, Immunology, and Biochemistry, University of Tennessee Health Science Center, Memphis, TN, USA

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First published: 23 June 2020
Citations: 2

Abstract

Introduction

Hypogammaglobulinemia has not been well studied in pediatric solid organ transplant (SOT) recipients. We evaluated plasma immunoglobulin (Ig) and lymphocyte phenotypes among 31 pediatric heart and kidney recipients for two years post-transplant and from 10 non-transplanted children.

Methods

Plasma IgM, IgG, and IgA were quantified by immunoturbidimetric assays, IgG subclasses were quantified by bead-based multiplex immunoassay, and lymphocyte phenotypes were assessed by flow cytometry.

Results

Median age at transplant for SOT recipients was similar to that of the control cohort (15 vs. 12.5 years, respectively; P = .61). Mean plasma IgG and IgM levels for SOT recipients fell significantly below the control cohort means by 1 month post-transplant (P < .001 for both) and remained lower than control levels at 12-18 months post-transplant. Heart recipients had lower frequencies of a CD4+ naïve T lymphocytes relative to kidney recipients.

Conclusions

Hypogammaglobulinemia was prevalent and persistent among pediatric SOT recipients and may be secondary to immunosuppressive medications, as well as loss of thymus tissue and CD45RA+  CD4+ T cells in heart recipients. Limitations of our study include but are not limited to small sample size from a single center, lack of samples for all participants at every time point, and lack of peripheral blood mononuclear cell samples for the non-transplanted cohort.

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