Teclistamab

CYTOKINE RELEASE SYNDROME and NEUROLOGIC TOXICITY, including IMMUNE EFFECTOR CELL-ASSOCIATED NEUROTOXICITY SYNDROME Cytokine release syndrome (CRS), including life-threatening or fatal reactions, can occur in patients receiving TECVAYLI. Initiate treatment with TECVAYLI step-up dosing schedule to reduce risk of CRS. Withhold TECVAYLI until CRS resolves or permanently discontinue based on severity [see Dosage and Administration (2.1 , 2.5) and Warnings and Precautions (5.1) ] . Neurologic toxicity, including Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) and serious, life-threatening, or fatal reactions, can occur in patients receiving TECVAYLI. Monitor patients for signs or symptoms of neurologic toxicity, including ICANS, during treatment. Withhold TECVAYLI until neurologic toxicity resolves or permanently discontinue based on severity [see Dosage and Administration (2.5) and Warnings and Precautions (5.2) ] . Because of the risk of CRS and neurologic toxicity, including ICANS, TECVAYLI is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the TECVAYLI and TALVEY REMS [see Warnings and Precautions (5.3) ] . WARNING: CYTOKINE RELEASE SYNDROME and NEUROLOGIC TOXICITY including IMMUNE EFFECTOR CELL-ASSOCIATED NEUROTOXICITY SYNDROME See full prescribing information for complete boxed warning. Cytokine release syndrome (CRS), including life-threatening or fatal reactions, can occur in patients receiving TECVAYLI. Initiate treatment with TECVAYLI step-up dosing schedule to reduce risk of CRS. Withhold TECVAYLI until CRS resolves or permanently discontinue based on severity. ( 2.1 , 2.5 , 5.1 ) Neurologic toxicity, including Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) and serious, life-threatening or fatal reactions, can occur in patients receiving TECVAYLI. Monitor patients for signs or symptoms of neurologic toxicity, including ICANS, during treatment. Withhold TECVAYLI until neurologic toxicity resolves or permanently discontinue based on severity. ( 2.5 , 5.2 ) TECVAYLI is available only through a restricted program called the TECVAYLI and TALVEY Risk Evaluation and Mitigation Strategy (REMS). ( 5.3 )

Hepatotoxicity : Can cause hepatotoxicity, including fatalities. Monitor liver enzymes and bilirubin at baseline and during treatment as clinically indicated. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity ( 2.5 , 5.4 ) Infections : Can cause severe, life-threatening, or fatal infections. Monitor patients for signs and symptoms of infection and treat appropriately. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity. ( 2.5 , 5.5 ) Neutropenia : Monitor complete blood cell counts at baseline and periodically during treatment. Withhold TECVAYLI based on severity. ( 2.5 , 5.6 ) Hypersensitivity and Other Administration Reactions : Can cause systemic administration-related reactions and local injection site reactions. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity. ( 2.5 , 5.7 ) Embryo-Fetal Toxicity : May cause fetal harm. Advise females of reproductive potential of the potential risk to the fetus and to use effective contraception. ( 5.8 , 8.1 , 8.3 )

Cytokine Release Syndrome TECVAYLI can cause cytokine release syndrome (CRS), including life-threatening or fatal reactions [see Adverse Reactions (6.1) ] . In the clinical trials (monotherapy and combination therapy trials; N=448), CRS occurred in 64% of patients who received TECVAYLI at the recommended dosage, with Grade 1 CRS occurring in 46% of patients, Grade 2 in 18%, and Grade 3 in 0.2%. Recurrent CRS occurred in 27% of patients. Most patients experienced CRS during the initial step-up dosing schedule (step-up dose 1 (37%), step-up dose 2 (32%), or the initial treatment dose (20%)). CRS first occurred following subsequent doses of TECVAYLI in 2.5% of patients. The median time to onset of CRS was 2 (range: 1 to 9) days after the most recent dose and the median duration of CRS was 2 (range: 1 to 22) days. Clinical signs and symptoms of CRS included, but were not limited to, fever, hypoxia, chills, hypotension, sinus tachycardia, headache, and elevated liver enzymes (aspartate aminotransferase and alanine aminotransferase elevation). Initiate therapy according to TECVAYLI step-up dosing schedule to reduce risk of CRS [see Dosage and Administration (2.1 , 2.5) ] . Administer pretreatment medications to reduce risk of CRS and monitor patients following administration of TECVAYLI accordingly [see Dosage and Administration (2.3 , 2.5) ] . At the first sign of CRS, immediately evaluate the patient for hospitalization. Administer supportive care based on severity and consider further management per current practice guidelines. Withhold until CRS resolves or permanently discontinue TECVAYLI based on severity [see Dosage and Administration (2.5) ] . TECVAYLI is available only through a restricted program under a REMS [see Warnings and Precautions (5.3) ].

Neurologic Toxicity including Immune Effector Cell-Associated Neurotoxicity Syndrome TECVAYLI can cause serious, life-threatening or fatal neurologic toxicity, including immune effector cell-associated neurotoxicity syndrome (ICANS) [see Adverse Reactions (6.1) ] . In the clinical trials (monotherapy and combination therapy trials; N=448), neurologic toxicity occurred in 60% of patients who received TECVAYLI at the recommended dosage, with Grade 3 or 4 neurologic toxicity in 6%. Neurologic toxicities reported in ≥5% of patients included headache (27%), sensory neuropathy (16%), motor dysfunction (15%), insomnia (12%), encephalopathy (11%), and dizziness (8%). Fatal neurologic toxicity occurred in 0.4% of patients, including Guillain-Barré syndrome and status epilepticus (one patient each). In MajesTEC-1, ICANS was reported in 6% of patients who received TECVAYLI as monotherapy at the recommended dosage [see Adverse Reactions (6.1) ] . Recurrent ICANS occurred in 1.8% of patients. Most patients experienced ICANS following step-up dose 1 (1.2%), step-up dose 2 (0.6%), or the initial treatment dose (1.8%). Less than 3% of patients developed first occurrence of ICANS following subsequent TECVAYLI doses. The median time to onset of ICANS was 4 days (range: 2 to 8 days) after the most recent TECVAYLI dose with a median duration of 3 days (range: 1 to 20 days). The most frequent clinical manifestations of ICANS reported were confusional state and dysgraphia. In MajesTEC-3, ICANS was reported in 1.1% of patients who received the recommended TECVAYLI dosage in combination with daratumumab and hyaluronidase-fihj, including Grade 4 ICANS in 1 patient. All events of ICANS occurred during the step-up dosing schedule [see Adverse Reactions (6.1) ] . The median time to onset of ICANS was 2 days (range: 1 to 3 days) after the most recent dose and the median duration of ICANS was 2 days (range: 1 to 2 days). The clinical manifestations of ICANS reported were amnesia, encephalopathy and delirium. The onset of ICANS can be concurrent with CRS, following resolution of CRS, or in the absence of CRS. Monitor patients for signs and symptoms of neurologic toxicity, including ICANS during TECVAYLI treatment. At the first sign of neurologic toxicity, including ICANS, immediately evaluate patient and provide supportive therapy based on severity. Withhold until neurologic toxicity resolves or permanently discontinue TECVAYLI based on severity per recommendations and consider further

TECVAYLI and TALVEY REMS TECVAYLI is available only through a restricted program under a REMS called the "TECVAYLI and TALVEY REMS" because of the risks of CRS and neurologic toxicity, including ICANS [see Warnings and Precautions (5.1 , 5.2) ]. Notable requirements of the TECVAYLI and TALVEY REMS include the following: Prescribers must be certified with the REMS by enrolling and completing training. Prescribers must counsel patients receiving TECVAYLI about the risk of CRS and neurologic toxicity, including ICANS, and provide patients with Patient Wallet Card. Pharmacies and healthcare settings that dispense TECVAYLI must be certified with this REMS and must verify prescribers are certified through this REMS. Wholesalers and distributers must only distribute TECVAYLI to certified pharmacies or healthcare settings. Further information about the "TECVAYLI and TALVEY REMS" is available at www.TEC-TALREMS.com or by telephone at 1-855-810-8064.

Hepatotoxicity TECVAYLI can cause hepatotoxicity, including fatalities. There was one fatal case of hepatic failure in MajesTEC-1. In patients who received TECVAYLI at the recommended dosage in the clinical trials (monotherapy and combination therapy trials; N=448), elevated aspartate aminotransferase (AST) occurred in 47% of patients, with Grade 3 or 4 elevations in 2.9%. Elevated alanine aminotransferase (ALT) occurred in 48% of patients, with Grade 3 or 4 elevations in 3.8%. Elevated total bilirubin occurred in 10% of patients with Grade 3 or 4 elevations in 0.7%. Liver enzyme elevation can occur with or without concurrent CRS. Monitor liver enzymes and bilirubin at baseline and during TECVAYLI treatment as clinically indicated. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity [see Dosage and Administration (2.5) ].

Infections TECVAYLI can cause severe, life-threatening, or fatal infections. In MajesTEC-1 (N=165), in patients who received the recommended TECVAYLI dosage, serious infections, including opportunistic infections, occurred in 30% of patients, Grade 3 or 4 infections occurred in 35% of patients, and fatal infections occurred in 4.2% of patients [see Adverse Reactions (6.1) ] . In MajesTEC-3 (N=283), in patients who received TECVAYLI in combination with daratumumab and hyaluronidase-fihj at the recommended dosage, serious infections, including opportunistic infections, occurred in 54% of patients, Grade 3 or Grade 4 infections occurred in 54% of patients and fatal infections occurred in 4.6% of patients [see Adverse Reactions (6.1) ] . Monitor patients for signs and symptoms of infection prior to and during treatment with TECVAYLI and treat appropriately. Administer prophylactic antimicrobials according to current practice guidelines [see Dosage and Administration (2.3) ] . Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity [see Dosage and Administration (2.5) ] . Monitor immunoglobulin levels prior to and during treatment with TECVAYLI and administer subcutaneous or intravenous immunoglobulin (IVIG) to maintain the serum levels >400 mg/dL.

Neutropenia TECVAYLI can cause neutropenia and febrile neutropenia. In patients who received TECVAYLI at the recommended dosage in the clinical trials (monotherapy and combination therapy trials; N=448), decreased neutrophils occurred in 88% of patients, with Grade 3 or 4 decreased neutrophils in 70%. Febrile neutropenia occurred in 6% of patients [see Adverse Reactions (6.1) ]. Monitor complete blood cell counts at baseline and periodically during treatment and provide supportive care per local institutional guidelines. Monitor patients with neutropenia for signs of infection. Withhold TECVAYLI based on severity [see Dosage and Administration (2.5) ] .

Hypersensitivity and Other Administration Reactions TECVAYLI can cause both systemic administration-related reactions and local injection-site reactions. Systemic Reactions In patients who received the recommended TECVAYLI dosage in the clinical trials (monotherapy and combination therapy trials; N=448), 2.5% of patients experienced systemic-administration reactions, which included recurrent pyrexia and rash. Local Reactions In patients who received TECVAYLI at the recommended dosage in the clinical trials (monotherapy and combination therapy trials; N=448), injection-site reactions occurred in 37% of patients with Grade 1 injection-site reactions in 29% and Grade 2 in 9%. Withhold TECVAYLI or consider permanent discontinuation of TECVAYLI based on severity [see Dosage and Administration (2.5) ] .

Embryo-Fetal Toxicity Based on its mechanism of action, TECVAYLI may cause fetal harm when administered to a pregnant patient. Advise pregnant patients of the potential risk to the fetus. Advise females of reproductive potential to use effective contraception during treatment with TECVAYLI and for 5 months after the last dose [see Use in Specific Populations (8.1 , 8.3) ] .