From my own experience, the expression of the gene can change, based on environmental changes, which makes perfect sense (otherwise the specie would not have survived), but the gene itself, I cannot tell (I do not think so, but I have no proof, be scientific or empirical)
However, following some spiritual thinking, even the genes themselves could change, who knows.
But yes, Bubu, you understand what the topic is about, no doubts lollll.
However again, my previous answer was regarding training of the brain, changing the synaptic pathways or creating new ones in order to improve existing abilities or to create new ones. This could be related to genes expression (yet, it may not be).
This has been known since at least forty years, before I went to university. The brain is malleable and can be changed, as a muscle can. However, like with muscles, training has to be extensive and very thorough, heavy, for changes to occur.
For children with brain disorder, this means lots lots of work. Making a child willing participant is one of the key to success (many children won't do the necessary work) and parents have to be extemely disciplined and dedicated, in terms of time implication, emotioal and financial involvement and money. Most parents won't do the necessary sacrifices either (a parent's own life didappears for 10-12 years). I am full of awe admiration for the dedication and had work my own daughter had.