Aucatzyl Side Effects

6 ADVERSE REACTIONS The most common (non-laboratory) adverse reactions (incidence ≥ 20%) are: CRS, infections - pathogen unspecified, musculoskeletal pain, viral infections, fever, nausea, bacterial infectious disorders, diarrhea, febrile neutropenia, ICANS, hypotension, pain, fatigue, headache, encephalopathy, and hemorrhage ( 6.1 ).

To report SUSPECTED ADVERSE REACTIONS, contact Autolus Inc at toll-free phone 1-855-288-5227 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch ( 17 ).

6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

The safety of AUCATZYL was evaluated in the FELIX study in which 100 patients with relapsed or refractory B-cell acute lymphoblastic leukemia (B-ALL) received AUCATZYL at a median dose of 410 × 10 6 CD19 CAR-positive viable T cells (range: 10 to 480 × 10 6 CD19 CAR-positive viable T cells with 90% of patients receiving the recommended dose of 410 × 10 6 ± 25%) [see Clinical Studies (14) ] .

The most common serious adverse reactions of any Grade (incidence ≥ 2%) included infections-pathogen unspecified, febrile neutropenia, ICANS, CRS, fever, bacterial infectious disorders, encephalopathy, fungal infections, hemorrhage, respiratory failure, hypotension, ascites, HLH/MAS, thrombosis and hypoxia.

Nine patients (9%) experienced fatal adverse reactions which included infections (sepsis, pneumonia, peritonitis), ascites, pulmonary embolism, acute respiratory distress syndrome, HLH/MAS and ICANS.

Of the 9 patients, five patients who died from infections had pre-existing and ongoing neutropenia prior to receiving bridging therapy, lymphodepletion chemotherapy treatment and/or AUCATZYL.

Table 3 summarizes the adverse reactions (excluding laboratory abnormalities) that occurred in at least 10% of patients.

Table 4 presents the most common Grade 3 or 4 laboratory abnormalities, occurring in at least 10% of patients.

Table 3: Adverse Reactions Occurring in ≥ 10% of Patients in FELIX Study (N=100) Adverse Reaction Any Grade (%) Grade 3 or Higher (%) Blood and lymphatic system disorders Febrile neutropenia 26 26 Coagulopathy Is a composite that includes multiple related terms.