First things first: sorry about your son's autism.

> My son regressed into Autism after MMR. It is true. I hope the world realizes it before more children get effected.

"The world" does not dispute that your son started showing signs of autism right after getting the MMR vaccine. Since there is no scientific causal explanation, and since study after study after study have shown that children who get the MMR vaccine do not develop autism at higher rates than those who did not get the vaccine, the best explanation is that the timing of the onset of your son's condition is a coincidence. I understand why parents dealing with their own personal sample size of one jump to that conclusion, but the link is just not there.