We found that a drastic reduction in number of vGluT1 labeled profiles in the somatosensory thalamus (VP: a reduction of 72–74 % or about threefold–fourfold; RTN: a reduction of 42–82 % or 1.8-fold–fivefold) in the ipsilateral side of PVL mice. This evidence concerns the gene SLC17A7 and periventricular leukomalacia.