Lynozyfic Side Effects

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Cytokine Release Syndrome [see Warnings and Precautions (5.1) ] Neurologic Toxicity, including Immune Effector Cell-Associated Neurotoxicity Syndrome [see Warnings and Precautions (5.2) ] Infections [see Warnings and Precautions (5.4) ] Neutropenia [see Warnings and Precautions (5.5) ] Hepatotoxicity [see Warnings and Precautions (5.6) ] The most common adverse reactions (≥20%) are musculoskeletal pain, cytokine release syndrome, cough, upper respiratory tract infection, diarrhea, fatigue, pneumonia, nausea, headache, and dyspnea.

( 6.1 ) The most common Grade 3 or 4 laboratory abnormalities (≥30%) are decreased lymphocyte count, decreased neutrophil count, decreased hemoglobin, and decreased white blood cell count.

( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Regeneron at 1-844-467-2998 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

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.

Relapsed or Refractory Multiple Myeloma The safety of LYNOZYFIC was evaluated in LINKER-MM1 [see Clinical Studies (14) ] .

Patients (n=117) received LYNOZYFIC as step-up doses of 5 mg on Day 1 and 25 mg on Day 8, and the first treatment dose of 200 mg on Day

Patients then received 200 mg intravenously once weekly from Week 4 to Week 13, followed by 200 mg every 2 weeks from Week

In the Phase 2 portion of the study, patients who achieved and maintained VGPR or better at or after Week 24 and received at least 17 doses of 200 mg were able to receive every 4-week dosing.

The median duration of treatment was 47 weeks (range 1, 151);

55% of patients were exposed for 9 months or longer and 36% were exposed for 1 year or longer.