وعلى أية حال، هناك دواء "تم تطويره في شركة  يمكن من خلاله إيقاف تطور المرض ولكن شركة  تم شراؤها من قبل.
However, there is a medicine that was developed at the Burroughs Wellcome Company that could halt the progression of the disease, but Burroughs Wellcome has just been acquired by Glaxo Wellcome.