Overall Survival or OS IS a key measure in clinical trials.
Category for medical terms
RAS is a family of proteins which stay upstream of a cell signalling process
As opposed to a biologic like a monoclonal antibody, a small molecule drug is an organic non-biologic drug with low molecular weight.
A sponsor of a drug receives a CRL or Complete Response Letter from the FDA when the FDA needs to tell the sponsor that the NDA is unacceptable