Factor XI and Lupus anti coagulant

Patient: I have been diagnosed with both Factor XI and Lupus-anti-coagulant. How common is this condition?

Doctor: From research and available data, Factor XI deficiency, also known as hemophilia C occurs in 1 in 100,000 people, while Lupus anti coagulant is said to occur in 1 to 5% of healthy individuals.