At a minimum, these SNPs are known to be related, and others may also be
Usher syndrome results in a combination of hearing loss and visual impairment, and is a leading cause of deafblindness. Adapted from  and more recent information, the following table outlines the major subtypes of Usher syndrome with their molecular basis and clinical consequences.
|Clinical Type||Subtype||Gene||Hearing loss||Vestibular Function||Night Blindness Onset|
|2C||VLGR1||Sloping moderate||Normal||2nd decade|
|2D||WHRN||Sloping moderate||Normal||2nd decade|