“…Actual practice varies, as collections of biospecimens (or biobanks) are highly heterogeneous in terms of tissue type, procurement situation, and geographic, social, and historical context ( 56 , 58 , 60 , 126 , 146 ). Furthermore, regulations and guidelines concerning informed consent are not necessarily specific to biospecimen research, nor are they harmonized ( 40 , 59 ). As illustrated by current US regulations, the result has sometimes been ambiguity, inadvertent constraints on research access, and research proceeding without consent ( 40 , 47 , 69 ).…”