Throwaway to avoid getting doxxed

I know there are probably arguments against centering biology in the discussion about trans people (and if you want to make these arguments to me please do, I'm all ears), but I have found that many transphobes are brought to reflection when told that transgender feelings have a congenital basis, like homosexuality. I have been testing this. Again, I realize this might be a flawed or wrongheaded approach and I am open to criticism.

Anyway, my issue is that, while I have read some research, I do not have a strong enough grasp of the field as a whole to be forceful with this rhetoric. If I start posting studies, I might end up cherrypicking a position that is open to strong criticism.

I realize the research itself is unsettled and many questions remain, but I just want enough to inspire doubt. I want people to doubt that their current understanding of trans people is correct.

This study published in nature found correlations in the parietal lobe that might be associated with perception of one's own body, but I do not feel comfortable posting studies anywhere until I feel more confident that I know what I am talking about.

*got rid of the word "transsexual"