My heart goes out to you and your family L..
You know, when my mother was diagnosed with breast cancer, I hunted down the doc who connected Lance Armstrong to his specialist. I figured, what was good for Lance was good for my Mom. The doc told me that I should get to the hospital with the most funding. So I focused my attention on MD Anderson in Texas and Mayo Clinic in MN. Since we live in WI, we considered Mayo Clinic, where an Uncle of mine has had such incredible treatment. So, that is what I would recommend if you can do it. I think on the east coast that might be Columbia or John Hopkins.
Also, the role of the care-take or advocate can be daunting for a family member. There is a fabulous establishment in Madison, WI that you should definitely contact. They are called the Center for Patient Partnerships. They are a wonderful patient-advocacy service. They can search the entire country and possibly the world for what you want or need for your son be it a type of doctor, study, hospital, support group etc.. Doctors can't possibly know all of the studies out there, and hospitals are competitive so I would seriously contact this unbiased source:
http://law.wisc.edu/patientadvocacy/services/index.html
Best wishes and thoughts to your family. Your boy has a strong little body- he has a better chance of kicking this than many and a strong Mom to boot I am certain.
A.