Noah Wyle is explaining why Supriya Ganesh‘s Dr. Mohan will not be in The Pitt season three.

If you did not see the news, a few weeks back, it was revealed that Supriya, who has played the fan favorite doctor on the show since season one, would be exiting the series. It was described as a “story-driven decision.”

Now, amid intense fan upset over this decision, Noah is explaining that this is very common in hospital ERs.

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“It’s an inevitability that’s going to happen every season with this show because as writers we’re hard pressed to figure out what a lapse of time we can have and keep most of the ensemble together realistically,” Noah told Variety.

“Emergency rooms have a high revolving door. As always, we try to bring in new characters or promote from within as we go through these cast changes and try to keep the storylines fresh, but obviously Supriya has been a huge part of our show since the beginning,” he added. “Dr. Mohan is a beloved character, and I love playing with her and working with Supriya, and we wish her all the best in her next endeavors, and we’re going to miss her.”

The show’s creator R. Scott Gemmill also said, “It’s sort of the nature of the show. Unfortunately, the way the medical profession works, you come in, you learn, you move on, and we want to try and be as truthful to that process as possible. So we’re going to turn over our cast. But I think it’s a great launching pad for people and that’s the best we can do.”

Not all of the main stars on the show are even confirmed to come back for season three. See who is definitely returning, at this time.