Orphan Drug or Ineffective Molecule?

That is the big question. Does anyone know what happened to B Lymphocyte Stimulator (BLyS)? It seemed to be a promising treatment for CVID and other immunodeficiencies but then disappeared after phase 2 trials a couple of years ago. Was it not effective, did it have horrible side effects, was it not profitable or was it simply dropped so that Human Genome Sciences could spend valuable resources elsewhere? It’s frustrating to know that a treatment for my affliction is out there somewhere and I can’t get it.