Serious Adverse Event — What It Means in Clinical Trials
Plain English Definition
A serious adverse event (SAE) is any medical event during a trial that results in death, hospitalization, disability, a birth defect, or is otherwise life-threatening. SAEs are reported to regulators within 24 hours. The research team must determine whether the event was caused by the study treatment.
Why It Matters
SAEs are treated with extreme urgency. If you experience a serious medical event during a trial, your care takes priority over the study. The trial may be paused or modified to protect all participants.
Example
A safety report might note: "One serious adverse event of grade 4 liver toxicity was reported and determined to be treatment-related. The participant recovered after the drug was stopped."
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