"Neither one are the real answers, but they are steps forward and that's what we need," said Turnham, who added that he thinks the real answers will come in combination therapies.
"We need to be nimble about combination studies," he said. "In the two years that we've known we need to study vemurafenib and ipilumumab [Yervoy], 18,000 people have died of melanoma in the U.S. We can't afford to wait. We're very excited about the positive news, but we have a long way to go."
More information
The Skin Cancer Foundation has more on melanoma.
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