Sub-pial and perivascular thorn-shaped astrocytes have also been describedin chronic survivors of military blast injury (Shively et al., 2016) and spinal cord thorn-shaped astrocytesdevelop in the setting of chronic compressive forces in cervical spondylosis (Shimizu et al., 2008).Therefore, the possibility exists that, in the context of neurodegeneration, distribution ofastroglial tau pathology towards sulcal depths might serve as evidence of prior exposure toTBI (Forrest et al.,2019). The gene discussed is MAPT; the disease is spondylosis, cervical.