Absolutely none that I'm aware of. There are a few types of ichthyosis that are syndromic, but most of them are incredibly rare, even among ichthyosis families. In general, I've never heard of a link between kidney problems and the major forms of ichthyosis.
Ichthyosis-en-Confetti Type 2
Husband, Nathan - 10, Elliot - 7, Oliver - 4, all affected.
I also have an unaffected daughter, age 8.
email: jennifer at confettiskin dot com
facebook - find me on "ichthyosis mommy spot" or "friends of ichthyosis"