%0 Case Reports %T FOXJ1 Variants Causing Primary Ciliary Dyskinesia with Hydrocephalus: A Case Report from Japan. %A Ito M %A Morimoto K %A Ohfuji T %A Miyabayashi A %A Wakabayashi K %A Yamada H %A Hijikata M %A Keicho N %J Intern Med %V 63 %N 10 %D 2024 May 15 %M 37813609 %F 1.282 %R 10.2169/internalmedicine.2565-23 %X Primary ciliary dyskinesia (PCD) is a genetic disease characterized by motile cilia dysfunction, mostly inherited in an autosomal recessive or X-linked manner. We herein report a 29-year-old woman with PCD caused by a heterozygous frameshift mutation due to a single nucleotide deletion in exon 3 of FOXJ1. Heterozygous de novo mutations in FOXJ1 have been reported as an autosomal-dominant cause of PCD. The patient had situs inversus, congenital heart disease, infertility, and hydrocephalus. However, the nasal nitric oxide level was normal. Long-term macrolide therapy was remarkably effective. This is the first case report of PCD caused by a FOXJ1 variant in Japan.