Unfortunately this is what I found:
In the world of purebred dogs every breed has its host of genetic health problems. Dobermans and Weimaraners are no exception. Cancer, cardiomyopathy and cervical vestibular instability (CVI or Wobblers) are known as ‘The Three Cs’. These are the deadly diseases to which many Doberman deaths are attributed. Weimaraners also fall victim to a host of cancers. Sadly, there is no cure for any of these 'Three C's'. Hypothyroidism and hepatitis are found in some Doberman bloodlines more than others, and the breed also has a few eye diseases, hip dysplasia, renal problems and von willebrand’s disease (vWD).
You can look up other sites if you wish, I just thought I'd help you find something on this as I do not know much about this breed!
I hope that I didn't make you feel worse.....
I'm sure BLUE with get through this with flying colors!
My thoughts are with you & your family!!!!!