"In a trial protocol search result, what is BH in this sentence. Single Patient expanded access program for patient BH"

AI

"In a trial protocol search result, BH in "Single Patient expanded access program for patient BH" is very likely an abbreviation or identifier used internally by the specific trial or institution for that individual patient.

It is a de-identified way of referring to the single person receiving treatment under an expanded access (compassionate use) protocol.
The context of an "expanded access program for a single patient" implies a specific, individual case outside of a standard clinical trial, often referred to as "compassionate use" or a "single patient IND (Investigational New Drug)" by the FDA.

Because these are individual cases, the specific patient is not identified by their name in public documentation, and an internal identifier like "BH" is used instead.

While "BH" commonly stands for "breath-hold" in radiation oncology studies, and less often for "behavioral health" in military or psychology contexts, those meanings do not fit the context of a "Single Patient expanded access program for patient BH" sentence.

The structure of the sentence suggests "BH" is a proper identifier for the patient, similar to a patient ID or initials