Hello Dr. Turner,
Thanks for your response!
I believe we have Waardenburg Syndrome type II as the members of my family with the syndrome has sensorineural hearing loss, iris pigmentary abnormality and hair hypopigmentation but without dystopia canthorum.
I did some googling and found a list of SNPs that carry the MITF gene (that causes Waardenburg). I have one of the SNPs in my DNA: rs704246. Does this tell you anything?
I'm awaiting results from my grandparents' DNA testing which hopefully will tell me more.