When I started blogging in 2010 the stem cell arena was a very different place.
Back then the hot topic was the battle over the legality of federal funding of embryonic stem cell research. That battle is over, or at least in hibernation, with a2013 federal court rulingallowing such funding to continue. The stem cell debate of today, which in its own way is just as fierce as the old one, is focused on how best to regulate the clinical translation and commercialization of innovative stem cell technologies.
The stakes in this new stem cell battle on the regulatory front are very high both for the stem cell field and for patients. Too little regulation could lead to harm to patients and damage to the stem cell field at a crucial juncture in its history, while too much regulation could stifle stem cell and regenerative medicine innovations.
The goal of stem cell advocates, including myself, is to find a regulatory sweet spot where science-based, innovative stem cell medicine can advance expeditiously. On the other side we have largely physicians and lawyers along with some patients arguing for drastically-reduced regulation and acceleration of for-profit stem cell interventions to patients, even without concrete data supporting safety or efficacy.
The latter group is a key part of a rapidly-proliferating stem cell clinic industry in the US. It consists of for-profit stem cell clinics that collectively have already conducted stem cell transplants on potentially thousands of patients without federal regulatory approval. These clinics have in effect thrown down the gauntlet to the US Food and Drug Administration (FDA) with their use of non-FDA approved stem cell products on patients.
The FDA is the regulatory body legally empowered to regulate biologic products and hence stem cells in the US. However, the clinics generally argue that they and their stem cell products should not be regulated by the FDA because they believe that the products are not drugs and they as the physicians transplanting the stem cells are just conducting the practice of medicine. FDA guidance over the years has consistently conflicted with this view and indicated to the contrary that these clinics are generally producing a stem cell product that is a biological drug. Even so the clinics at this time do not have FDA approval to make and use stem cell biological drugs. Such approval can come in response to what is called anInvestigational New Drug (IND)application. The clinics do not have IND approval from the FDA for their stem cell products or devices and do not have the licensing (called aBiological License Application or BLA) needed to produce and administer biological drug products such as certain types of stem cells. Collectively, for these reasons (absence of BLA and INDs),I definesuch clinics as unlicensed and their products as unapproved or unproven. Note that the physicians practicing at such clinics generally do have medical licenses from state medical boards, so they personally are licensed in that sense. These clinic physicians frequently further point out that doctors themselves can only be directly regulated by state medical boards and not by the FDA.
Where does the FDA get its authority to regulate stem cell products and clinics? TheFederal Food, Drug, and Cosmetic (FDC) Actand thePublic Health Service (PHS) Actgive the FDA the legal authority and responsibility to regulate biologics including human stem cells. Therefore, barring a federal court specifically overturning a particular FDA decision, FDA regulations are essentially law when it comes to clinical use of stem cells in the US. The FDA is given certain authority over stem cell biological products and procedures more specifically under several regulations including 21 CFR Part 1271.10, modified by 21 CFR 1271.15, which details exceptions to its regulatory requirements. A key term to know before trying to decipher the verbiage in these regulations is human cell and tissue products or HCT/Ps, which basically means human biological products including human stem cells.
Both individual doctors doing stem cell transplants and chains of dozens of stem cell clinics have sprouted up from coast to coast in the US in the last few years. These clinics, collectively numberingmore than 20 in the state of Texas aloneand more than 100 across America, are administering stem cell transplants of one kind or another to growing numbers of patients each year, potentially generating millions of dollars in income, all without FDA approval. In doing so many of these clinics, even absent litigation against the FDA, are operationally challenging and undermining the authority of the agency by acting as medical providers using stem cell products without FDA approval or licensing. They are also a direct challenge to science-based medicine more generally. To put it more bluntly, I believe these clinics are in essence collectively doing a huge, unapproved human experiment for profit.
The FDA has issued a steady stream of regulatory guidances, supported in some cases by court decisions (e.g.US v. Regenerative Sciences Inc.), painting a clear picture that stem cell clinics in a general sense (as well as their products, devices, and procedures) are within its regulatory domain and their products can be defined as biological drugs. Furthermore, in 2012 and 2013 the FDA took numerous actions related to stem cell clinics such as warning letters issued to a number of clinicsincluding the Texas stem cell clinic Celltex, which is well-known for having treatedGovernor Rick Perry.
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Stem cell clinics, FDA, and giant, unapproved for-profit ...
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