"after many years of treating her they are suggesting this study"
Am I to infer then that your mom is treatment-refractory? what genotype?
If she has already failed tx and is in good health you might want to look into getting her enrolled in PROVE-3..I'm not a hep doc, but I think if I had such a profile I'd go for vx-950 over a very early stage "therapeutic vaccine" trial
alternatively if she is tx-naive, especially non-gen-1, why not just go for SOC
if there is some contraindication to interferon and/or rib and there is some pressing reason to treat like advancing fibrosis, then this study may make sense..or if she has stable disease and just wants to take a stab at a non-interferon-based therapy for a "cure"
I would really ask the doc the rationale for this study over other options in her particular case just my lay opinion - take it for what its worth (which may not be much!)