Open-Label Study to Evaluate the Efficacy of ECP in Secondary Progressive Multiple Sclerosis

Infusion of drug subcutaneously, once a month.

This intervention is the placement of up to two IV's to extract your blood as a set volume, separate out the white cells and return the red cells to your body. Then the white cells are treated with a drug called UVADEX (methoxsalen), excited by a UV light and returned to your body. Once IV is to withdraw your blood and the other is to return your blood to your body.