About 200,000 people a year in the United States have brain tumors resulting from cancers in other parts of the body. This new study could be the catalyst that will change the standard of care for melanoma patients. William H. Edwards | The Image Bank | Getty Images

A new study offers a glint of hope to people in a desperate situation: Patients with melanoma, the most serious form of skin cancer, that has spread to the brain. A combination of two drugs that activate the immune system shrank brain tumors in many melanoma patients and prolonged life in a study of 94 people at 28 medical centers in the United States. The drugs were ipilimumab (brand name Yervoy) and nivolumab (Opdivo), and they belong to a class called checkpoint inhibitors. Melanoma is more likely than most cancers to spread to the brain, and once it gets there, fewer than 20 percent of patients survive one year with traditional treatments, according to Dr. Hussein A. Tawbi, the first author of the study and an associate professor of melanoma medical oncology at the MD Anderson Cancer Center in Houston. But in the study, 82 percent were still alive after a year. "This is great news," Dr. Tawbi said. "We can help a lot more melanoma patients, and hopefully we'll be able to help a lot more patients in general with these results." About 91,270 new cases of melanoma are expected in the United States this year, along with 9,320 deaths from the disease. Treating cancer that has spread to the brain is a new frontier for the type of drugs used in the study. Checkpoint inhibitors enable the patient's own immune system to fight cancer, a treatment strategy called immunotherapy. They have led to long remissions from deadly forms of the disease, including melanoma and tumors in the lungs and kidneys. The drugs do not help everyone, but when they work the results can be remarkable.

We can help a lot more melanoma patients, and hopefully we'll be able to help a lot more patients in general with these results. Dr. Hussein A. Tawbi first author of the study and an associate professor of melanoma medical oncology at the MD Anderson Cancer Center in Houston.

The new findings should change the standard of care, Dr. Tawbi said: Melanoma patients like those in the study should be offered the drug combination as part of their initial treatment. He said the drugs should also be tested in people with other types of cancer that have spread to the brain. He estimated that 200,000 people a year in the United States have brain tumors resulting from cancers in other parts of the body. He emphasized that radiation would still be an important part of treatment for many of these patients. The results do not apply to people with tumors that originate in the brain, like glioblastoma, the type of brain cancer that Sen. John McCain is being treated for. So far, the kind of immunotherapy used in the study has not worked for such tumors, Dr. Tawbi said, but studies of drug combinations are under way to try to help those patients. The study and an editorial about it were published on Wednesday in The New England Journal of Medicine. The editorial, by doctors in Britain who agreed with Dr. Tawbi's recommendations, cautioned that the findings did not apply to all melanoma patients, only to those exactly like the ones in the study. Those patients had one or more brain tumors, detected by scans, that were not causing symptoms. The drugs, made by Bristol-Myers Squibb, are expensive, costing more than $100,000 a year. The company paid for the trial, and helped to design it and to collect and analyze the data. The company also paid for medical writing and editorial assistance in preparing the article for the journal.

A researcher in a Bristol-Myers Squibb laboratory. The drugs — ipilimumab (brand name Yervoy) and nivolumab (Opdivo) — belong to a class called checkpoint inhibitors and are made by Bristol-Myers Squibb. Emile Wamsteker | Bloomberg | Getty Images

The National Cancer Institute also helped pay for the study. Dr. Jedd Wolchok, a melanoma expert at Memorial Sloan Kettering Cancer Center in New York, said the findings had already been presented at a major cancer conference. "From the boots-on-the-ground point of view, this has changed the way I practice," he said. The study, Dr. Wolchok said, made it clear that immunotherapy that was working to treat melanoma in other parts of the body could also control disease that scans had picked up in the brain. He said brain tumors in one of his patients had disappeared with the treatment. And he agreed that immunotherapy should also be tested in patients with some other types of cancer that had spread to the brain. "The survival outcomes are very encouraging," he said. Dr. Wolchok's hospital participated in the study, but he was not involved in it. More from The New York Times: Take a Look at These Unusual Strategies for Fighting Dementia

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Until recently, patients with cancer that had spread to the brain were considered such hopeless cases that they were excluded from most clinical trials of new cancer drugs. They generally survived only weeks to months. Radiation and surgery helped a bit, but the brain tumors generally came back. Patients deteriorated rapidly, and developed trouble thinking and moving around. "The usual response from the oncologist and even the patient is nihilism," Dr. Tawbi said. Immunotherapy caused excitement in 2015 when former President Jimmy Carter said he had received it after melanoma had spread to his liver and brain. He underwent radiation treatment as well. His most recent scan, in June, showed no cancer, his press secretary, Deanna Congileo, said in an email. Mr. Carter received pembrolizumab (brand name Keytruda), a checkpoint inhibitor that was not used in the new study.

Former President Jimmy Carter discusses his cancer diagnosis during a press conference at the Carter Center on August 20, 2015, in Atlanta. Carter's melanoma spread to his liver and brain. He later underwent immunotherapy treatment. His most recent scan, in June, showed no cancer. Getty Images