I don't know if this is a factor for lupus or not, but a couple of you have mentioned RH blood in your family in another post. My mom had RH neg blood as well and 2 of my brothers, but I have O+ blood. Who else has this blood type in their family?
I tried to find some info on this, but couldn't. I did find a little info on gene traits. If anyone else can find anything on this please share it with us. Here is what I found:
What causes lupus?
Lupus is an autoimmune disorder, which means the body's immune system attacks its own healthy cells and tissues.
Lupus is considered to be a multifactorial condition. Multifactorial inheritance means that "many factors" are involved in causing a health problem. The factors are usually both genetic and environmental, where a combination of genes from both parents, in addition to unknown environmental factors, produce the trait or condition. Often one gender (either males or females) is affected more frequently than the other in multifactorial traits. Multifactorial traits do recur in families because they are partly caused by genes. Females are affected with lupus three to 10 times more often than males.
A group of genes on chromosome 6 codes for the HLA antigens which play a major role in susceptibility and resistance to disease. Specific HLA antigens influence the development of many common disorders, many that are autoimmune related and are inherited as multifactorial traits. When a person has the specific HLA antigen type associated with the disease, they may have a genetic susceptibility to have the condition and be more apt to develop it. The HLA antigen associated with lupus is called DR2 and DR3. It is important to understand that a person without these antigens may also develop lupus, so that HLA antigen testing is not diagnostic or accurate for prediction of the condition.