There are several stem cell trials being conducted outside of the USA, but so far the FDA has not granted any approvals for stem cell trials on MS patients in the United States. There has been some early preclinical work done, and several studies are pending FDA approval.

Outside of the USA, Dr. Neil Scolding is conducting a stem cell study in Great Britain. There is also a joint Israeli/Greek study ongoing. Both studies are using autologous mesenchymal stem cells in an attempt to repair the damaged nervous systems of the trial participants. Additionally, they are looking the same cells' ability to modulate the immune system...

http://www.physorg.com/news110034720.html

http://www.hadassah.org.il/English/E...+treatment.htm

There was also this small study done in Tehran, which was along the lines of the two studies I referenced above:

http://iji.sums.ac.ir/winter2007/7th...4_no1_2007.pdf

I've no doubt there are other studies being done elsewhere in the world that simply have not been publicized. The same may be true for some "under the radar" studies being done in the United States.

And just to be perfectly clear, I'm talking about stem cell therapies that are designed specifically to repair damaged nervous systems. I'm not referencing the therapies that take down a patient's immune system, and then rebuild it using bone marrow derived stem cells. This type of treatment has been used for at least 10 years, sometimes with great success, but is quite different than the stem cell therapy that most multiple sclerosis patients with permanent neurologic damage are looking for.

I'm also ignoring the stem cell treatments being offered by shady outfits in Europe, Latin America, and the Far East...