We report on a patient with multiple myeloma and light-chain induced renal failure, diagnosed with hepatitis C and high viral load in the pre-transplant period. We show that the new hepatitis C virus directed drugs daclatasvir and sofosbuvir can be safely applied concomitantly to high-dose therapy with autologous hematopoietic stem cell transplantation. Liver enzymes remained in the normal range during the transplant and in the post-transplant period.