That’s probably the next step (the authors raise the question of the identity of the implicated RNA). Transcriptome profiling (which this is) has become extreme

That’s probably the next step (the authors raise the question of the identity of the implicated RNA). Transcriptome profiling (which this is) has become extremely routine recently. In fact, it’s highly unorthodox that this analysis isn’t already part of the original paper (to clarify: it’s completely fine, but quite unusual, to leave it as a follow-up study).