Question about the T-Rex Study

I was reading Joshua Levy’s blog on the current T1D research. He mentions that the Phase 1 results of the T-Rex study showed that “The basic results were that after two years, these patients continued to generate C-peptide at the same rate as when they started the trial. There was no drop off in C-peptide production. That means there was no drop off in insulin production.

To me this sounds like they have successfully halted the autoimmune attack for at least two years. If that is the case then this is a significant breakthrough. Is my understanding of the results correct?

Here is the link to his article in case anyone is interested: Current Research into Cures for Type-1 Diabetes: Search results for T-Rex