There are some indications of hereditary factor,s but all dogs, including mixes, can have it. Good luck on Curly Sue staying healthy and having it found early.
This is a good support and info site:
**My husband and I decided to chat about what Jack's "Heaven" would be like and what I thought would be a short chat, ended up being a very long and funny discussion!! So I thought it's be interesting to share what (By learning about our basenjis in everyday life) would be their Ideal Heaven! I've got my Jack down to a T!!
Oh man...THATS Jack In Detail, LOL
What About you???**