Journal
GENES
Volume 13, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/genes13050856
Keywords
growth hormone receptor; insulin-like growth factor 1 receptor; SGA; catch-up growth
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This review aims to summarize the mutations in the GHR and IGF1R genes that have been discovered so far and their impact on body height, as well as their relationship with catch-up growth in children born small for gestational age (SGA).
The aim of this review was to describe all of the mutations in the growth hormone receptor (GHR) and insulin-like growth factor-1 receptor (IGF1R) genes that have been discovered so far, and their possible impact on final body height, as well as their relationship with catch-up growth in children born small for gestational age (SGA). Mutations in the GHR gene were found to cause a body height below -2 SD, from the mean for sex and age, whereas the mutations in the IGF1R gene were associated with low body height and intrauterine growth restriction (IUGR), and with being born SGA. After birth, when the child's growth is not restricted by the intrauterine environment, the infant may develop its developmental potential and experience catch-up growth, which makes it possible to catch up with peers born appropriate for gestational age (AGA). Despite this, catch-up growth does not apply to all, but only to about 85% of SGA children, and its mechanism is unknown. It is possible that SGA children who did not experience catch-up growth are carriers of mutations in the GHR and/or IGF1R genes
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