Do albino rats cause illnesses such as deafness, blindnes such as such as deafness, blindness, brain tumas?

No. It is rumors and urban legends that lead people to believe albino rats have issues more than any other color. Albino rats have no more of a chance than any other color variation to develop any of those illnesses and troubles. Poor breeding, experimentation, allergies, etc. are the main causes for those and it happens to any rat.