My grandmother from my father's side passed away at the age of 37. I've asked my father if it was familial or not, but him being just 4 years old at the time, he never learned much about it. I can't find any other cases in our family, and my father(64) is an only child and hasn't developed it. I'm wondering, is her being so young (she was 34 or 35 when she was diagnosed, a sign that it could be familial? I'm not sure if that's a thing, but I read somewhere that diagnoses at early ages can indicate its familial, but now I can't seem to find proof of that.
Thanks,
Sammantha