Answers an old question
In a comment, Jon Grant, JD, MD, MPH, professor of psychiatry and director of the Addictive, Compulsive, and Impulsive Disorders Research Lab at the University of Chicago, said the findings fill an important gap in what is known about OCD.
“I think the findings are really answering this old question of: ‘Is OCD due to the rearing patterns in a family versus genetics?’ This was able to get at that information showing that it’s virtually all due to genetics within families, and that’s really good to know,” said Dr. Grant, who was not a part of the study.
He was also struck by the finding of a strong genetic relationship between OCD and generalized anxiety disorder (GAD).
While identifying that OCD and GAD are genetically linked likely won’t change clinical care, “I think it at least allows clinicians to know when we see that comorbidity that it may be much more genetically linked in the case of GAD,” Dr. Grant said.
The study was funded by the Swedish Research Council, as well as Avtal om Läkarutbildning och Forskning funding from Region Skåne. Dr. Kendler and Dr. Grant reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.