Type 1 How likely is this?

[WreckTangle]

I just want to figure out some stuff to do with my medical problems and a question came into my head. I wanted to post on here to see if maybe I could get some answers. (I will probably be posting this on other forums, just incase you see it again somewhere else).

I have Type 1 diabetes, whereas others in my immediate family and my extended family have all got Type 2. (My nan had type 2 diabetes as well as my great nan, who had type 2 diabetes).

How likely is it that I would have Type 1?
Surely, if I had family members who had Type 2, I would get that type as well?
It's just confusing me a little, because I have no one in my family who has ever had type 1, apart from a aunt, but she is in no way actually related to me (married my uncle), and is adopted.

 

[Deleted member 475901]

There is a very technical article about this, but research is still in the early stages. Also as there is now known to be more than 2 types of diabetes some people may have been misdiagnosed?

Untangling the genetic link between type 1 and type 2 diabetes using functional genomics - Scientific Reports

There is evidence pointing towards shared etiological features between type 1 diabetes (T1D) and type 2 diabetes (T2D) despite both phenotypes being considered genetically distinct. However, the existence of shared genetic features for T1D and T2D remains complex and poorly defined. To better...

www.nature.com

 

[Oldvatr]

We do sometimes see forum members reporting that they were initially diagnosed as Type2 but then find they are actually T1D or LADA/MODY later. So some of your relatives may have actually been T1D but diagnosed at an older age so appeared to be T2D. If they progreessed to insulin as most T2D used to do in previous generations, then no one would be the wiser. The c-peptide test and the GAD antibody tests are the diagnostic tools that are a recent addition to the armoury and used to diagnose autoimmune diabetes. Prior to this it was really the age at diagnosis that detemined type.

PS I am the opposite - T1D mother T2D in me and with 30+ years as T2D and still not using insulin, I am deffo not T1D.