Trouble understanding inheritance odds about my mom’s ALS
My mom passed from ALS when I was 3, she was only 27 years old. Obviously I don’t remember her time in the hospital but I’m guessing she must have been diagnosed around 25-26. Nobody one else on my mother’s side of the family has had ALS, (her grandparents, parents, and siblings.) I’m just so confused on how sporadic ALS works. What are the odds she had a de novo gene mutation? What are the odds I might have inherited it? Since my mom is such a rare case getting diagnosed so young. Im thinking I should get a referral to a genetic counselor to understand better. I’m 23 now and as I get closer to my mom’s age this has been on my mind more. Thank you for reading, any advice is appreciated