Expanded access
（重定向自Compassionate use）
Expanded access (also known as compassionate use) refers to the use of an investigational new drug (IND) outside of a clinical trial by patients with serious or life-threatening conditions who do not meet the enrollment criteria for the clinical trial in progress. Outside the US, such access is allowed through Named patient programs. In the US this type of access may be available, in accordance with United States Food and Drug Administration (FDA) regulations, when it is clear that patients may benefit from the treatment, the therapy can be given safely outside the clinical trial setting, no other alternative therapy is available, and the drug developer agrees to provide access to the drug. The FDA refers to such a program as an expanded access program (EAP). EAPs can be leveraged in a wide range of therapeutic areas including HIV/AIDS and other infectious diseases, cancer, rare diseases, and cardiovascular diseases, to name a few.