5.4     Tumor Lysis Syndrome
Tumor lysis syndrome (TLS), which may be life-threatening or fatal, has been observed in patients receiving BLINCYTO. Appropriate prophylactic measures, including pretreatment nontoxic cytoreduction and on-treatment hydration, should be used for the prevention of TLS during BLINCYTO treatment. Monitor for signs or symptoms of TLS. Management of these events may require either temporary interruption or discontinuation of BLINCYTO [see Dosage and Administration (2.3)].

5.5     Neutropenia and Febrile Neutropenia
Neutropenia and febrile neutropenia, including life-threatening cases, have been observed in patients receiving BLINCYTO. Monitor laboratory parameters (including, but not limited to, white blood cell count and absolute neutrophil count) during BLINCYTO infusion. Interrupt BLINCYTO if prolonged neutropenia occurs. 

5.6     Effects on Ability to Drive and Use Machines
Due to the potential for neurologic events, including seizures, patients receiving BLINCYTO are at risk for loss of consciousness [see Warnings and Precautions (5.2)]. Advise patients to refrain from driving and engaging in hazardous occupations or activities such as operating heavy or potentially dangerous machinery while BLINCYTO is being administered. 

5.7     Elevated Liver Enzymes
Treatment with BLINCYTO was associated with transient elevations in liver enzymes. Although the majority of these events were observed in the setting of CRS, some were observed outside of this setting. For these events, the median time to onset was 15 days.  In patients receiving BLINCYTO in clinical trials, Grade 3 or greater elevations in liver enzymes occurred in approximately 6% of patients outside the setting of CRS and resulted in treatment discontinuation in less than 1% of patients.

Monitor alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transferase (GGT), and total blood bilirubin prior to the start of and during BLINCYTO treatment. Interrupt BLINCYTO if the transaminases rise to greater than 5 times the upper limit of normal or if bilirubin rises to more than 3 times the upper limit of normal.

5.8     Leukoencephalopathy
Cranial magnetic resonance imaging (MRI) changes showing leukoencephalopathy have been observed in patients receiving BLINCYTO, especially in patients with prior treatment with cranial irradiation and antileukemic chemotherapy (including systemic high-dose methotrexate or intrathecal cytarabine). The clinical significance of these imaging changes is unknown.   

5.9     Preparation and Administration Errors
Preparation and administration errors have occurred with BLINCYTO treatment. Follow instructions for preparation (including admixing) and administration strictly to minimize medication errors (including underdose and overdose) [see Dosage and Administration (2.2) and (2.4)].

6. ADVE