The present invention provides methods and compositions for monitoring the efficacy of cancer treatment such as lung cancer, pancreatic cancer and skin cancer, cancer treatment such as cancer treatment, screening, diagnosis and prediction, lung cancer, pancreatic cancer and skin cancer and drug development.본 발명은 폐암, 췌장암 및 피부암과 같은 암 치료, 스크리닝, 진단 및 예측용, 폐암, 췌장암 및 피부암과 같은 암 치료의 유효성 모니터링 및 약물 개발을 위한 방법 및 조성물을 제공한다.