AHI1 and pathologic nystagmus: Nystagmus has been associated with mutations in the following genes: MKS1, TCTN3/TCTN2, ARL13B, TMEM237, CEP120, CCD2D2A, CEP290, INPP5E, AHI1, POC1B, RPGRIP1L, KIAA0556, KIAA0586, AHI1/NPHP1, C5orf42, TMEM67, and CSPP1.