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Hello @cchristopoulos The primary reason for the implementation of the RWE guidance document was to provide some flexibility around presenting evidence that was not previously accepted, in order to allow additional clinical data. Code section 3.1.4 states “Claims based upon laboratory or animal testing reports should be separated and cannot be used to imply clinical significance, unless there is evidence of a valid clinical correlation”. Unless the PK/laboratory-type data are unequivocally shown to have clinical relevance reflected by widely-accepted medical opinion and practice (e.g. authoritative consensus guidelines) and determined to be a valid endpoint (an example of this would be viral load in HIV), then a PK presentation would also not fall under the scope of the RWE guidance document.