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Serious Adverse Event (SAE)

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An Adverse Event (AE) that results in any of the following outcomes:

  1. death,
  2. life-threatening adverse event,
  3. requires inpatient hospitalization or prolongation of existing hospitalization,
  4. results in persistent or significant disability/incapacity,
  5. is a congenital anomaly/birth defect, or
  6. based upon appropriate medical judgment, may jeopardize the participant’s health and may require medical or surgical intervention to avoid any of the forementioned outcomes.

An SAE is defined by the Department of Health and Human Services (DHHS) Office for Human Research Protections (OHRP), the Food and Drug Administration (FDA), and the International Council for Harmonisation (ICH) as follows:

Serious Adverse Event (DHHS OHRP): Any adverse event that 1) results in death; 2) is life-threatening (places the subject at immediate risk of death from the event as it occurred); 3) results in inpatient hospitalization or prolongation of existing hospitalization; 4) results in a persistent or significant disability/incapacity; 5) results in a congenital anomaly/birth defect; or 6) based upon appropriate medical judgment, may jeopardize the subject’s health and may require medical or surgical intervention to prevent one of the other outcomes listed in this definition (examples of such events include allergic bronchospasm requiring intensive treatment in the emergency room or at home, blood dyscrasias or convulsions that do not result in inpatient hospitalization, or the development of drug dependency or drug abuse). Modified from the definition of serious adverse drug experience in FDA regulations at 21 CFR 312.32(a). OHRP: Unanticipated Problems Involving Risks & Adverse Events Guidance; FDA: 21 CFR 312.32, IND Safety Reporting

Serious Adverse Event (FDA IND): An adverse event or suspected adverse reaction is considered serious if, in the view of either the investigator or sponsor, it results in any of the following outcomes: death, a life-threatening adverse event, inpatient hospitalization or prolongation of existing hospitalization, a persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, or a congenital anomaly/birth defect. Important medical events that may not result in death, be life-threatening, or require hospitalization may be considered serious when, based upon appropriate medical judgment, they may jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the outcomes listed in this definition. Examples of such medical events include allergic bronchospasm requiring intensive treatment in an emergency room or at home, blood dyscrasias or convulsions that do not result in inpatient hospitalization, or the development of drug dependency or drug abuse. FDA: 21 CFR 312.32, IND Safety Reporting; FDA: Safety Reporting Requirements for INDs and BA/BE Studies

Serious Adverse Event (ICH GCP): Any untoward medical occurrence that at any dose results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, or is a congenital anomaly/birth defect. ICH GCP, 1.50


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