“…The interval between drug administration and the onset of RRD is several days to weeks (6,7). Recently, in three reports of RRD induced by nivolumab (anti-PD-1 antibody), two out of three patients developed life-threating dermatitis with Stevens-Johnson syndrome, and the interval from nivolumab administration to the onset of RRD was between three days and two weeks (9)(10)(11). In the present case, the grade of RRD was severe, and the interval between atezolizumab administration and the onset of RRD was three weeks, which is consistent with these previous nivolumab-induced RRD case reports.…”