IGFBP3 and heart disorder: Intriguingly, FTT associated with pediatric heart disease often features lower circulating insulin‐like growth factor 1 (IGF1) and IGF binding protein 3 (IGFBP3) levels (Barton et al, 1996; Dinleyici et al, 2007; Surmeli‐Onay et al, 2011; Peng et al, 2013).