The present invention relates to substituted pyrrolopyridinones and substituted pyrazolopyridinones which are inhibitors of BET proteins such as BRD2, BRD3, BRD4 and BRD-t and which are useful in the treatment of diseases such as cancer.본 발명은, BRD2, BRD3, BRD4 및 BRD-t와 같은 BET 단백질의 저해제이고, 암과 같은 질환의 치료에 유용한, 치환된 피롤로피리디논 및 치환된 피라졸로피리디논에 관한 것이다.