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No association between transient hypothyroxinemia of prematurity and neurodevelopmental outcome in young adulthood

  • Jonneke J. Hollanders*
  • , Joël Israëls
  • , Sylvia M. Van Der Pal
  • , Paul H. Verkerk
  • , Joost Rotteveel
  • , Martijn J J Finken
  • , E. T M Hille
  • , C. H. De Groot
  • , H. Kloosterboer-Boerrigter
  • , A. L. Den Ouden
  • , A. Rijpstra
  • , S. P. Verloove-Vanhorick
  • , J. A. Vogelaar
  • , J. H. Kok
  • , A. Ilsen
  • , M. Van Der Lans
  • , W. J C Boelen-Van Der Loo
  • , T. Lundqvist
  • , H. S A Heymans
  • , E. J. Duiverman
  • W. B. Geven, M. L. Duiverman, L. I. Geven, E. J L E Vrijlandt, A. L M Mulder, A. Gerver, L. A A Kollée, L. Reijmers, R. Sonnemans, J. M. Wit, F. W. Dekker, M. J J Finken, N. Weisglas-Kuperus, M. G. Keijzer-Veen, A. J. Van Der Heijden, J. B. Van Goudoever, M. M. Van Weissenbruch, A. Cranendonk, H. A. Delemarre-Van De Waal, L. De Groot, J. F. Samsom, L. S. De Vries, K. J. Rademaker, E. Moerman, M. Voogsgeerd, M. J K De Kleine, P. Andriessen, C. C M Dielissen-Van Helvoirt, I. Mohamed, H. L M Van Straaten, W. Baerts, G. W. Veneklaas Slots-Kloosterboer, E. M J Tuller-Pikkemaat, M. H. Ens-Dokkum, G. J. Van Steenbrugge
*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Context: Transient hypothyroxinemia of prematurity (THoP) has been associated with neurodevelopmental impairment in infancy and childhood. It is not known whether these relations persist into adulthood.

Objective: The objective was to examine whether there is an effect of THoP on intelligence quotient (IQ) score and motor functioning at a young adult age.

Design: This study was part of the 19-year follow-up of the Project On Preterm and Small-forgestational-age birth (POPS) cohort, which included infants born very preterm (ie,32 wk) and/or with a very low birth weight (ie, 1500 g).

Setting: This was a multicenter study.

Patients: There were 398 19-year-old participants of the POPS cohort, of whom 120 had THoP.

Exposure: T4 concentrations were obtained through the national neonatal screening program for congenital hypothyroidism.THoP was defined as a total T4 concentration< -3 SD of the daily mean (approximately 60 nmol/L).

Main Outcome Measures: Main outcome measures were IQ and motor functioning, measured with the digital Multicultural Capacities Test-Intermediate Level and a revised version of Touwen’s examination of minor neurological dysfunction, respectively.

Results: THoP was not associated with IQ score (mean difference, 0 [95% confidence interval,3.8 to 3.8] points) or motor function (mean difference, 0.6 [95% confidence interval, 1.3 to 2.5] points) after adjustment for demographic and perinatal characteristics.

Conclusions: No associations between THoP and neurodevelopmental outcome at age 19 years were found.

Original languageEnglish
Pages (from-to)4648-4653
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Volume100
Issue number12
DOIs
Publication statusPublished - 1 Dec 2015

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