The below quoted article (which i have shortened) is calling for DNA samples from lupus patients. All you have to do is ask your doctor about how to do this, then give a blood sample (I don't know about you but I do that every 3 months anyway).
I am skeptical about genetics being the cause of lupus. I think it's toxins in our food air and water. but hey, if they find a gene therapy that helps, then great. Let's go at it from all angles.
Lupus Gene Finding Prompts Call for More DNA Samples. Wellcome Trust Sanger Institute Study
Wellcome Trust researchers have identified a key gene involved in the disease lupus, which affects around 50 000 people in the UK, most of them women. The lead researcher behind the study has called for more patients to volunteer DNA samples to enable them to further study the underlying causes of the disease.