Can you predict who will respond to Low Dose Naltrexone (LDN)?

Can you predict who will respond to Low Dose Naltrexone (LDN)?

You stated only one third to one half will respond. Can you predict who will respond, HSCRP, or other test results? 

So again, I apologize if I misspoke. It's the other way around. One third or less of participants seem not to respond. And I don't have any way to predict yet. As it is right now, it seems to be pretty random. If anybody knows of a predictive method, I haven't really looked at enough blood work data and things like that to speculate on blood tests and things like that. 

Again, it's kind of one of those areas that I'd really like to dig into a little bit deeper and try to figure out why some people respond really well. I call them super responders and why people don't respond at all. 
If anybody knows, please email me with your thoughts.