The document discusses the regulatory affairs involved in the global submission processes for Investigational New Drug (IND) and New Drug Application (NDA), emphasizing the preclinical investigation stage, which is crucial for establishing safety and efficacy before human trials. It outlines the content requirements for IND applications, the submission process, FDA response timelines, and the classification of applications in both the U.S. and India, detailing the necessary documentation and steps for drug approval. Additionally, the document describes the roles of regulatory bodies like the FDA and DCGI and the importance of adhering to specified guidelines during drug development.