Kenji Sakai, Chiho Ishida, Koji Hayashi, Naotaka Tsuji, Takayuki Kannon, Kazuyoshi Hosomichi, Nobuyuki Takei, Akiyoshi Kakita, Atsushi Tajima, Masahito Yamada
We describe a postmortem case of familial idiopathic basal ganglia calcification (FIBGC) in a 72-year-old Japanese man. The patient showed progressive cognitive impairment with a seven-year clinical course and calcification of the basal ganglia, thalami, and cerebellar dentate nuclei. A novel heterozygous missense variant in SLC20A2 (c.920C>T/p.P307L), a type III sodium-dependent phosphate transporter (PiT-2), was subsequently identified, in addition to typical neuropathological findings of FIBGC, such as capillary calcification of the occipital gray matter, confluent calcification of the basal ganglia and cerebellar white matter, widespread occurrence of vasculopathic changes, cerebrovascular lesions, and vascular smooth muscle cell depletion...
January 13, 2022: Neuropathology: Official Journal of the Japanese Society of Neuropathology