abstract |
The present invention provides novel therapies for alopecia areata. The problem to be solved in the present invention is to solve the problem of 3 - [(3S, 4R) -3-methyl-6- (7H-pyrrolo [2,3- d] pyrimidin- [3.4] octan-1-yl] -3-oxopropanenitrile. Pyrrolo [2,3-d] pyrimidin-4-yl) -1,6-diazaspiro [3.4] octan-1-yl ] -3-oxopropanenitrile as an active ingredient. |