How should Tecvayli (teclistamab) 90 mg/mL solution for injection be mixed after reaching ambient temperature?

After Tecvayli (teclistamab) 90 mg/mL solution for injection has equilibrated to ambient temperature (15–30°C) for at least 15 minutes, gently swirl the vial for approximately 10 seconds to mix; do not shake or warm it in any other way.