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Page: << Prev | 1 | 2 "What makes this study different is that it shows delay in progression on the EDDS scale, which other studies have not done," O'Looney said.
The results "provide more evidence to support the value of early treatment," she said. "There has been disagreement about whether early treatment is beneficial. This provides additional evidence that early treatment delays progression on a disability scale."
An accompanying editorial by Dr. Sean Pittock, a neurologist at the Mayo Clinic, praised the study, saying, "Kappos and colleagues have set a new standard against which future extension trials will be compared."
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But Pittock said the results of the trial should be "interpreted with care, because the magnitude of benefit, although significant, is clinically small. This follow-up should not be misconstrued as evidence for a 'treat all' approach."
Kappos said he agreed with that assessment, but he noted that the trial covered only the first few years of a condition that could progress for decades. "In the early stages of the disease, the changes are minor," he said. "Later on, they can cause more severe problems. Changes that may look minor at an early stage take on greater importance."
"Even if it is only marginal, a significant delay is still a delay," O'Looney said. "To someone with MS, even a marginal delay in the loss of the ability to walk is important."
What the study results provide in the decision about treatment of a specific patient is "one more argument why it is important to have this treatment," Kappos said. "Then it is their decision. The treatment can cause side effects, and they have to weigh one against the other."
But the side effects of interferon treatment generally are "benign," Kappos added. The treatment would be especially helpful to patients in whom silent brain lesions are found by MRI scans, he said.
"This is an important argument to be considered by patients," Kappos said, and the trial results have changed the frame of that discussion. "Several years ago, neurologists hesitated to discuss it," he said, referring to early treatment. "Now, they can take the time to discuss it."
More information
MS and its treatment are described at the U.S. National Institute of Neurological Disorders and Stroke.
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