Email. Carlina White, separated from her family when she was kidnapped as a baby 23 years ago, followed her instincts to reunite with her biological parents, Joy White and Carl Tyson.mail. Carlina White, separated from her family when she was kidnapped as a baby 23 years ago, followed her instincts to reunite with her biological parents, Joy White and Carl Tyson.
Haemophilia B (or hemophilia B) is a blood clotting disorder caused by a mutation of the factor IX gene, leading to a deficiency of factor IX. It is the second-most common form of haemophilia, rarer than haemophilia A. It is sometimes called Christmas disease, named after Stephen Christmas, the first patient described with this disease.
The protein involved with hemophilia A is factor VIII (factor 8) and with hemophilia B is factor IX (factor 9). Picture of the blood clotting process. Hemophilia A is caused by a mutation in the gene for factor VIII, so there is deficiency of this clotting factor. Hemophilia B (also called Christmas disease) results from a deficiency of factor IX due to a mutation in the corresponding gene. A condition referred to as hemophilia C involves a deficiency of clotting factor XI. This condition is much rarer than hemophilia A and B and typically leads to mild symptoms. It is also not inherited in an X-linked manner and affects persons of both sexes.