From the FDA's web site.
---
"Because clinical studies about the safety and efficacy of these products have not been submitted to FDA, consumers currently have no way of knowing
whether e-cigarettes are safe for their intended use,
what types or concentrations of potentially harmful chemicals are found in these products, or
how much nicotine they are inhaling when they use these products."
---
Electronic Cigarettes
What I would like to know is are there currently ongoing Studies that might be Submitted in the Future?
I'm sure if there were Finished Studies, Someone would have Submitted them Already. Right?
At the time that FDA wrote the quoted text, they were trying to regulate electronic cigaettes as a drug & drug-delivery device combination. In that context, conducting clinical trials and submitting them to FDA would be a prerequisite for obtaining approval to market this new "treatment". Judge Leon's ruling changed all that. If there is any public health concern, according to the judge, FDA could take care of this by regulating the products under the (then) newly-passed tobacco Act.
How many clinical trials do you suppose RJ Reynolds submitted to FDA before beginning to sell Camel cigarettes, Camel snus, orbs, strips, and sticks? Zero. In the past there was never any requirement to submit a new tobacco product to the FDA.
Several small studies of e-cigarettes have been completed by independent researchers. These have been published in scientific journals or presented at scientific conferences such as the SRNT conference I am attending as I write this. The FDA staff is fully aware of these, as they read all the scientific journals and they have at least a dozen employees at attendance in conferences such as this.
Nobody just "submits" the results of studies on an ad hoc basis to FDA.
There is an entire New Drug Approval (NDA) process in place for pharmaceutical companies to seek approval for a new medical drug or device. It begins by ponying up a large sum of money to the FDA to kick off the process and then completing a series of safety and efficacy (to see whether the drug works as intended) studies, starting with testing on animals and ending with large clinical trials.
Under the tobacco Act, all products that were on the market as of February of 2007 can stay on the market as-is. Any new tobacco products will need to go through an approval process that has not yet been defined by FDA. Any product that the manufacturer wants to make reduced-exposure or reduced risks claims about will need to go through an approval process that, again, the FDA has not yet defined.
So the answer to your questions are "Yes" some studies are going on, and "No" they are not being submitted to the FDA, as there is no vehicle in place, no standards for what tests are needed and how they should be conducted, no rules, and no regulations.