A literature review indicated that 7 of the 10 iNPH-associated genes that we identified have previously been associated with cilia function (PRKD1, OTOG, NOTCH1, MYO7A, and HAVCR1) (24, , , , –29) or hydrocephalus (AK9 and SPG11). This evidence concerns the gene SPG11 and Hydrocephalus.