Last Updated on July 17, 2026 by Staff
Depression is a common mental health problem that affects millions of people every year. After doing a lot of research scientists still do not fully understand why some people are more likely to get depression than others. We know that things like stress and bad experiences can play a role. Our genes also have an influence on our risk of getting depression. Now some researchers from the University of Barcelona have found a group of genes that might help explain why people with depression often also have anxiety, get irritated easily and have personality traits like being neurotic.
These findings, which were published in Progress in Neuro-Psychopharmacology and Biological Psychiatry show that 20 genes might work together to contribute to depression.. They are all controlled by one important gene called RBFOX1. The researchers think that if we can understand how these genes work together we might be able to create personalized treatments and better tools for diagnosing mental health problems.
A Key Gene
The RBFOX1 genes do not work alone. It seems to be in charge of other genes that are involved in how our brain works.
Researchers think of RBFOX1 like an orchestra conductor. Like a conductor helps all the musicians play together in harmony RBFOX1 helps control when and how many genes become active in our brain cells.
This is important because depression is not caused by one bad gene. It happens because of the effect of many genes each having a small influence. If a key gene like RBFOX1 gets changed and it can cause changes in many biological processes. This can increase the chance of getting mental health problems at the same time.
That might be why people with depression often also have anxiety disorders, mood swings and other emotional problems.
Finding The Gene Network
To find these connections the researchers used several advanced scientific methods.
They looked at data from studies that searched the human genome for genetic variations linked to diseases. They also studied how genes are expressed in brain tissue, looked at molecular interaction networks and compared their findings with information from people with rare neurological disorders.
Using this approach the scientists found 19 genes that seem to play roles in depression and other related psychological traits.
Among these genes RBFOX1 was the central regulator. Other important genes included SP4 TCF4 PAX6. CADM2. These genes are known to influence brain development, how neurons communicate or mental health.
Shared Mental Health Problems
One of the discoveries was that there is a strong genetic overlap between depression and other psychiatric conditions. For example RBFOX1 has already been linked to mental disorders. The CADM2 gene has been associated with addiction and several psychiatric illnesses. TCF4 has connections with schizophrenia and insomnia. SP4 and PAX6 have shown activity in animal studies involving chronic stress.
These findings suggest that many mental health problems do not develop independently. They might share biological pathways controlled by the same genetic network.
Of treating depression, anxiety, addiction or sleep disorders as separate illnesses future research might focus on targeting the shared mechanisms that cause multiple conditions at once.
Toward Better Treatment
Understanding the network behind depression could greatly improve healthcare in the future.
Scientists believe that these discoveries might help identify markers that predict a person’s risk of getting depression before symptoms become severe. Such markers could allow doctors to classify patients accurately and choose treatments that target each person’s unique biology.
Personalized medicine is a goal in mental health research and studies like this bring scientists closer to that goal. By giving everyone the same medication future therapies could target specific molecular pathways controlled by genes like RBFOX1. This could improve treatment success. Reduce unwanted side effects.
Next Research Steps
Although the results are very promising researchers say that more work is still needed. The findings need to be confirmed using groups of participants from different populations. Scientists also want to investigate whether these genetic networks behave differently in men and women since depression affects women often.
Future laboratory experiments will focus on understanding how genes like CADM influence brain cells and contribute to depression. By studying these mechanisms in more detail researchers hope to find entirely new treatment strategies.
The discovery of RBFOX1 as the regulator of a complex genetic network is a big step toward understanding the biological basis of depression. While genetics is part of the puzzle this research provides valuable insight into why depression often occurs with other mental health conditions. It also offers hope that precise and personalized therapies might become available in the years to come.