6. However, accelerated approval should be used for a drug that represent significant advances over existing treatment or in case there is an unmet medical need for the indication for which the drug is intended, orphan drug for rare disease etc. in accordance with the provision prescribed under Second Schedule of ND& CT Rules, 2019. 7. ND & CT rules recognize the consideration of surrogate endpoints for approval of new drugs in certain situation where, the approval of a new drug may be based on the clinical data generated considering surrogate end-point rather than using standard outcome measures such as survival or disease progression which are reasonably likely to predict clinical benefit, or a clinical end point. 8. Surrogate endpoint may be acceptable if there is a strong indication that they will result in subject benefit. 9. Surrogate endpoint may not be acceptable if there are only causally related to clinical outcome.