Good news for Jimmy Carter’s fans came on Sunday when the former US President announced end of his cancer treatment. Carter said his doctors think he no longer needs drug treatment for the disease.

The 91-year-old Nobel Peace Prize winner on March 6 at Maranatha Baptist Church revealed the news. He was at the church for his regular Sunday school classes. Carter said that he received an MRI that lasted for more than 120 minutes.

The doctors determined that there’s no need of more cancer treatment, the former President said. After the announcement, crowd at the church applauded.

“His doctors will continue to perform scans to ensure cancer cells have not returned, and Carter will resume treatment if necessary”, said Deanna Congileo, spokeswoman of Carter. A spokesperson from the Winship Cancer Institute of Emory University was asked about Carter’s treatment, but the person refused to comment due to patient privacy policy.

Carter was taking Keytruda drug to treat his cancer, and it was working well on the former President. According to doctors, it was destroying cancer cells in Carter’s body.

Keytruda could be a life-saving drug, as per medical experts. They believe that Keytruda and similar immune therapy drugs could help people with melanoma. But the drugs are new, and many doctors don’t know how a patient should take it, said Dr. Len Lichtenfeld from the American Cancer Society.

Some people think the drug should be used continuously, while others believe a patient should stop taking it after some time. It all depends on a person, said Lichtenfeld, who wasn’t treating Carter.

Some cancer patients who notice good results decide to stop taking the drug, but battle with fear that the cancer could return, said melanoma specialist Dr. Douglas Johnson from Vanderbilt-Ingram Cancer Center.