The Southampton hospital at which Ashya King was diagnosed with cancer has disputed claims that alternative treatment improved Ashya King's chances of survival.
It said it still believes there would be 'no benefit' to his parents taking the five-year-old abroad for proton therapy.
Ashya's parents have today said he is clear of cancer and that the treatment has saved his life.
However, a spokesperson for the University Hospital Southampton NHS Foundation Trust, said the treatment would not have improved his chances of survival.
"The Trust considered there would be no benefit to Ashya of proton radiotherapy over standard radiotherapy and that view was supported by a national independent expert body."
They say that with the recommended treatment - a combination of radiotherapy and chemotherapy - his survival chances would have been between 70-80%. They describe this as 'very good'.