One example method for predictive clinical planning and design includes instantiating a plurality of data objects, each data object of the plurality of data objects comprising clinical trial information; displaying a graphical user interface on one or more display screens, the graphical user interface providing a graphical representation of at least a portion of a clinical trial and comprising a plurality of graphical nodes; receiving a selection of the second graphical node; receiving, via an editor associated with the second graphical node, a modification of the second data object; propagating an indication of the modification to the first data object, the propagation modifying a clinical trial data item of the first data object; and displaying, within the first graphical node, the modified clinical trial data item of the first data object.