Race the social construct is a social construct. We are the same species. Period, the end. But differences in genetics and physiology do warrant study because this is how we can find treatments and preventative measures to a multitude of disease.
This is a lot like saying that research that shows that men are more susceptible to heart attacks then women is sexists because gender is a social construct. Gender is a complex topic that evolves with our evolving understanding of wha it means to be human on a philosophical level. But the X chromosome isn’t a social construct and has very direct very tangible effects. You can’t call it a social construct.
In short: when it comes to how we build a society, recognize differences and account for them to bring as much economic opportunity equality to everyone. When it comes to medicine, study everything including genetic differences in order to get the best understanding of the problem at hand. Getting offended doesn’t get us closer to for example a cure for COVID, does it?