ERYTECH Pharma (Nasdaq & Euronext: ERYP), a clinical-stage biopharmaceutical company developing innovative therapies by encapsulating therapeutic drug substances inside red blood cells, today announced its intention to move forward towards the submission of a BLA to the US Food and Drug Administration (FDA) for eryaspase in hypersensitive acute lymphoblastic leukemia (ALL) patients following feedback from the agency in a pre-BLA meeting.