Is misophonia genetic?

It is unclear. There is only one pilot study, which used 23andMe’s data, on this question. It shows some interesting genetic correlations with some mental health problems but is only based on one question about feeling rage when other chew, and the results are not considered definitive or final. When multiple people in the same family have misophonia, it may be evidence for shared genetics, shared environmental or learning influences, or both. More research is definitely needed on this.

Additional Resources:

A genome-wide association study of a rage-related misophonia symptom and the genetic link with audiological traits, psychiatric disorders, and personality [January 2023] by Dirk J. A. Smit, Melissa Bakker, Abdel Abdellaoui, Alexander E. Hoetink, Nienke Vulink, and Damiaan Denys [Frontiers in Neuroscience]