I think there is good support around 20 if it gets that far.
RVNC That was a pre-earnings view, but so far it looks like earnings were good enough to maintain that level of support. This earnings reaction could take a few days or so to play out.
Then the presumptive run-up into PDUFA (tbd). If the run-up is small I would expect price to hold most or all of the gains (assuming approval and trial data in label) but generally would expect sell the news otherwise - after whatever upside reaction to approval is done.