Abstract: Applicant discloses methods and compositions for treating a patient suffering from amyotrophic lateral sclerosis (ALS) comprising administration of a heteroaryl ketone fused azadecalin compound. In embodiments, the heteroaryl ketone fused azadecalin compound is dazucorilant: (R)-(1-(4-fluorophenyl)-6-((4-(trifluoromethyl)phenyl) sulfonyl)-4, 4a, 5,6,7,8-hexahydro-1-H-pyrazolo[3,4-g]isoquinolin-4a-yl) (pyridin-2-yl)methanone, having the chemical structure illustrated as Suitable doses include daily administration of 150 milligrams and 300 milligrams of dazucorilant. Suitable doses include daily administration of dazucorilant with food, or with water, or with food and water. Daily administration of dazucorilant is effective to increase dazucorilant exposure up to about 2-fold when continued for seven days or more. Administration of such a heteroaryl ketone fused azadecalin compound may comprise oral administration, enteral administration, or other administration.