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Children with severe Osteogenesis imperfecta and short stature present on average with normal IGF-I and IGFBP-3

Heike Hoyer-Kuhn, Laura Höbing, Julia Cassens

    Journal of Pediatric Endocrinology & Metabolism : JPEM
    |April 19, 2016
    PubMed

    Insights

    Children with Osteogenesis Imperfecta (OI) show Insulin-like Growth Factor-I (IGF-I) and IGF Binding Protein-3 (IGFBP-3) levels in the lower normal range. These growth factor levels do not significantly differ between OI types.

    Area of Science:

    • Pediatric Endocrinology
    • Skeletal Dysplasias
    • Growth Factor Research

    Background:

    • Osteogenesis Imperfecta (OI) is a genetic disorder causing bone fragility and growth impairment.
    • Limited data exists on Insulin-like Growth Factor-I (IGF-I) and IGF Binding Protein-3 (IGFBP-3) levels in children with OI.
    • Understanding these growth factors is crucial for managing OI-related growth disturbances.

    Purpose of the Study:

    • To investigate IGF-I and IGFBP-3 levels in children diagnosed with various types of Osteogenesis Imperfecta.
    • To determine if OI severity, categorized by type, correlates with differences in IGF-I and IGFBP-3 levels.

    Main Methods:

    • Retrospective cross-sectional study involving 60 pediatric patients with OI.
    • Assessed serum levels of IGF-I and IGFBP-3.
    • Compared growth factor levels between different types of OI, specifically type 3 and type 4.

    Main Results:

    • Mean IGF-I levels were found in the lower normal range (137.4±109.1 μg/L).
    • Mean IGFBP-3 levels were within the normal range (3.105±1.175 mg/L).
    • No statistically significant differences in IGF-I or IGFBP-3 levels were observed between children with OI type 3 and type 4.

    Conclusions:

    • Children with Osteogenesis Imperfecta, regardless of severity, exhibit IGF-I and IGFBP-3 levels in the lower end of the normal spectrum.
    • The specific type of OI does not appear to significantly impact IGF-I and IGFBP-3 levels in the studied pediatric cohort.
    Abstract

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