Methods and compositions for treating a subject suffering from adrenocortical
carcinoma and having excess cortisol are disclosed. The methods provide therapeutic benefits including reduction of ACC
tumor load, restoration of T-
cell and natural killer (NK)
cell signaling pathways, increase in T-
cell and NK cell infiltration into the ACC tumor, reduction of neutrophil infiltration into the ACC tumor in the patient, and other therapeutic benefits. The methods include administration of a
glucocorticoid receptor modulator (GRM) (which may be a selective
glucocorticoid receptor modulator (SGRM)) and an
antibody checkpoint inhibitor. In embodiments, the GRM (e.g., a SGRM) is orally administered. The GRM may be a
nonsteroidal compound comprising: a fused azadecalin structure; a heteroaryl
ketone fused azadecalin structure; or an octahydro fused azadecalin structure.