A Cambridge University drugs trial has brought hope to thousands of sufferers of the debilitating illness Multiple Sclerosis.
Neurology researchers say tests of a cancer drug, which essentially reboots patients immune systems, has proven to be extremely effective in the treatment of MS. They say MS patients on the trial have noted marked improvements in their condition.
But now there are fears that the drug will go up in price and no longer be available to patients who have started using it because the firm behind the medicine has withdrawn it until it's licensed.
The drugs company Genzyme say they don't want to risk treating patients until the drug's licensed in case any adverse events delay it going on the market. They also say the drugs will be value for money.
Despite disappointment at the drugs withdrawal, scientists say today still marks a big turning point in the treatment of a devastating disease.