Jazz Pharmaceuticals plc...announced that the European Commission (EC) has granted marketing authorization for Enrylaze (JZP458; a recombinant Erwinia asparaginase or crisantaspase) for use as a component of a multi-agent chemotherapeutic regimen for the treatment of acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma (LBL) in adult and pediatric patients (1 month and older) who developed hypersensitivity or silent inactivation to E. coli-derived asparaginase. Enrylaze, approved as Rylaze in the United States and Canada, is a new Erwinia-derived asparaginase developed using a next-generation recombinant technology with a safety profile consistent with that of other asparaginase preparations.

RYLAZE is an asparagine specific enzyme indicated as a component of a multi-agent chemotherapeutic regimen for the treatment of acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma (LBL) in adult and pediatric patients 1 month or older who have developed hypersensitivity to E. coli-derived asparaginase.

Jazz Pharmaceuticals plc...today announced that the National Comprehensive Cancer Network (NCCN) added Rylaze (asparaginase erwinia chrysanthemi (recombinant)-rywn) to the Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Acute Lymphoblastic Leukemia (ALL), for both pediatric and adult patients.

For Cohort 1c, the proportions of patients (95% CI) achieving NSAA levels ≥0.1 IU/mL at the last 72- and 48-hour in Course 1 were 90% (81%, 98%) and 96% (90%, 100%), respectively, based on observed data; and were 92% (91%, 93%) and 94% (93%, 95%) based on modeled data. Mean (95% CI) SAA levels (IU/mL) at 72-hour were 0.16 (0.12, 0.19) for Cohort 1a, 0.33 (0.27, 0.39) for Cohort 1b, and 0.47 (0.35, 0.59) for Cohort 1c; and 0.45 (0.37, 0.53), 0.88 (0.76, 1.01), and 0.66 (0.54, 0.77), respectively, at 48-hour. The totality of the results from AALL1931 demonstrate the positive benefit-risk profile of the IM JZP458 dosing regimen of 25 mg/m2 M/W and 50 mg/m2 F with a safety profile consistent with other asparaginases.