After yesterday's blog post about Osiris, I received a very interesting email from Lorie in Texas whose son was part of the Prochymal trials. She posits that the people receiving the placebo may have reported a lessening of symptoms due to an anti-inflammatory property of the medium the stem cells is frozen in for stability which is called Dimethyl Sulfide (DMS for short.) Because the stuff has a strong smell (like corn, I have heard people say) they also gave the placebo infusions in the same medium.
This is a very interesting idea to me. Lorie also reported that her son had great results from the infusions he received. Of course they do not know if he was on Prochymal or the Placebo, but they are very dissapointed that he has to wait to have further treatment.
Considering the growing concerns about the downsides of the other biologic treatments currently used to fight severe Crohn's, I feel that the Prochymal trials should be put on as much of a fast track as is safe and appropriate.
The OSIRIS, Prochymal story just keeps getting more and more interesting, doesn't it. It's a great story - it has a potentially life saving drug, questions about why the study ended early, a law firm nosing around, and angry patients accusing the FDA of killing Crohn's patients... Top that off with the US Department of Defense stockpiling the medication for a purpose not yet needed. It sounds like a mixture of Erin Brockovich, X-Files, House, and Boston Legal.
Here is the text of the email I received, which Lorie has given me permission to reprint for you.
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From: Lorie Conn
Date: Thu,
28 May 2009 13:34:08 +0000
To:
Marianne Case
Subject: OSIRIS
I can give you a little bit of insight on the Prochymal Study, since my son was in the study for almost a year.
It is likely that the solution that they freeze the stem cells in to keep them stable, (something called DMS (Dimethyl Sulfide), and it smells like fresh shucked corn) & which is also an anti-inflammatory agent in itself; if everybody is feeling better, it could be that the solution itself triggered a body response – with or without the stem cells in it.
However, if you DID get cells (it was a blind study, so who knows?) it was likely that you got better pretty fast – and that you KEPT getting better over time.
I was really bummed that they stopped the study when they did, but I agree with you that if you find out something is wrong with your study you should stop it, redesign it & start over. A clean study is needed for FDA approval!
My son was in this study, and he changed from going to the bathroom 18 times a day, down to 5 times – and boy what a change in his life!
I keep thinking, though, if they had given him more cells at one time that perhaps this could have been a permanent cure. When they use Prochymal for the Graft vs Host infusions that’s what they do – one BIG infusion. For some odd reason in the study for the Crohns patients they decided to only do a series of smaller infusions over a period of two weeks. I think they’ve got a lot of testing yet to do – there will probably be no standard fix for every person. But the good news is it does seem to work!
Lorie Conn
RICHARDSON, TEXAS