Question: Is there any research into long-acting treatments?

Question: I was wondering if there is any hope for a longer term medication. I mean a medication or an injection where you take it a few times a year – or even every few years – and not every day of your life?  

I was wondering if there was any research like this already going on.

Also, how far away is a cure? What if someone is considering stem cells transplants like the one that cured the german man, what would be your advise and any recommendable country/practice for the procedure?