Whole-Exome sequencing enables a precision medicine approach for kidney transplant recipients

Nina Mann, Daniela A. Braun, Kassaundra Amann, Weizhen Tan, Shirlee Shril, Dervla M. Connaughton, Makiko Nakayama, Ronen Schneider, Thomas M. Kitzler, Amelie T. Van Der Ven, Jing Chen, Hadas Ityel, Asaf Vivante, Amar J. Majmundar, Ankana Daga, Jillian K. Warejko, Svjetlana Lovric, Shazia Ashraf, Tilman Jobst-Schwan, Eugen WidmeierHannah Hugo, Shrikant M. Mane, Leslie Spaneas, Michael J.G. Somers, Michael A. Ferguson, Avram Z. Traum, Deborah R. Stein, Michelle A. Baum, Ghaleb H. Daouk, Richard P. Lifton, Shannon Manzi, Khashayar Vakili, Heung Bae Kim, Nancy M. Rodig, Friedhelm Hildebrandt*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Background Whole-exome sequencing (WES) finds a CKD-related mutation in approximately 20% of patients presenting with CKD before 25 years of age. Although provision of amolecular diagnosis could have important implications for clinical management, evidence is lacking on the diagnostic yield and clinical utility of WES for pediatric renal transplant recipients. Methods To determine the diagnostic yield ofWES in pediatric kidney transplant recipients, we recruited 104 patients who had received a transplant at Boston Children's Hospital from 2007 through 2017, performed WES, and analyzed results for likely deleterious variants in approximately 400 genes known to cause CKD. Results By WES, we identified a genetic cause of CKD in 34 out of 104 (32.7%) transplant recipients. The likelihood of detecting a molecular genetic diagnosis was highest for patients with urinary stone disease (three out of three individuals), followed by renal cystic ciliopathies (seven out of nine individuals), steroidresistant nephrotic syndrome (nine out of 21 individuals), congenital anomalies of the kidney and urinary tract (ten out of 55 individuals), and chronic glomerulonephritis (one out of seven individuals). WES also yielded a molecular diagnosis for four out of nine individuals with ESRD of unknown etiology. The WESrelated molecular genetic diagnosis had implications for clinical care for five patients. Conclusions Nearly one third of pediatric renal transplant recipients had a genetic cause of their kidney disease identified by WES. Knowledge of this genetic information can help guide management of both transplant patients and potential living related donors.

Original languageEnglish
Pages (from-to)201-215
Number of pages15
JournalJournal of the American Society of Nephrology : JASN
Issue number2
StatePublished - Feb 2019
Externally publishedYes


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