Hey Abhinav 

The cut off rank and marks respectively  for admission in King George Medical University in 2018, Lucknow under the State quota for various categories in the previous year was- General- 2318 589   For admission under the All India quota under the  General category- 893 613. The details of the cut off for 2019 aren't out yet. This year the cut off went even higher. You can expect a similar cut off. 

Best of luck