PLP1 and fetal growth restriction: In fact, the DEGs with the lowest FDR adjusted p values and highest fold changes in the IUGR/hyperoxia dataset, before subanalysis, were myelin genes, including MoBP, Plp1, Mog, and Cnp. Unlike in IUGR/hyperoxia, the expression of these four myelin genes were not as significantly affected in IUGR or hyperoxia alone.