Authors: Clara Westwell-Roper; John R Best; Dean Elbe; Megan MacFadden; Susan Baer; Lori Tucker; Antony Au; Zainab Naqqash; Boyee Lin; Cynthia Lu; S Evelyn Stewart · Research

Can Anti-Inflammatory Drugs Help Treat Childhood OCD?

A clinical trial is testing whether the anti-inflammatory drug celecoxib can help improve symptoms in children with obsessive-compulsive disorder.

Source: Westwell-Roper, C., Best, J. R., Elbe, D., MacFadden, M., Baer, S., Tucker, L., Au, A., Naqqash, Z., Lin, B., Lu, C., & Stewart, S. E. (2022). Celecoxib versus placebo as an adjunct to treatment-as-usual in children and youth with obsessive–compulsive disorder: protocol for a single-site randomised quadruple-blind phase II study. BMJ Open, 12(1), e054296. https://doi.org/10.1136/bmjopen-2021-054296

What you need to know

  • Researchers are testing whether the anti-inflammatory drug celecoxib can help improve symptoms in children with obsessive-compulsive disorder (OCD).
  • The study will compare celecoxib to a placebo in children ages 7-18 with moderate to severe OCD over 12 weeks.
  • This is the first clinical trial to test an anti-inflammatory medication specifically for childhood OCD.
  • If effective, celecoxib could provide a new treatment option for children who don’t respond well to standard OCD therapies.

Background on OCD in Children

Obsessive-compulsive disorder (OCD) is a mental health condition that causes unwanted, intrusive thoughts (obsessions) and repetitive behaviors or mental acts (compulsions). OCD affects about 1-3% of children and can significantly impact their daily functioning and quality of life.

While effective treatments like cognitive-behavioral therapy and certain medications exist, some children continue to struggle with OCD symptoms even after trying these standard approaches. Researchers are always looking for new ways to help treat OCD, especially in children who don’t respond well to current therapies.

In recent years, scientists have found evidence suggesting that inflammation in the brain may play a role in OCD and other mental health conditions. Some studies have found higher levels of inflammatory markers in the brains of people with OCD.

Additionally, children who have had infections or inflammatory conditions appear to have higher rates of OCD. This has led researchers to wonder if medications that reduce inflammation could potentially help treat OCD symptoms.

Testing an Anti-Inflammatory Drug for Childhood OCD

To explore this possibility, researchers at British Columbia Children’s Hospital in Canada are conducting a clinical trial to test whether the anti-inflammatory drug celecoxib can help improve OCD symptoms in children.

Celecoxib belongs to a class of medications called COX-2 inhibitors. It works by blocking an enzyme involved in inflammation. While primarily used to treat arthritis pain, a few small studies in adults have suggested celecoxib may help with OCD symptoms when added to standard OCD medications.

This new study, called the ACE-OCD trial, is the first to test celecoxib specifically for childhood OCD. The researchers aim to determine if celecoxib is safe and effective as an add-on treatment for children with moderate to severe OCD.

How the Study Works

The ACE-OCD trial will include 80 children and teens ages 7-18 who have OCD. To participate, they must have moderate to severe OCD symptoms and be receiving standard OCD treatment from their regular healthcare providers.

Participants will be randomly assigned to receive either:

  1. Celecoxib capsules twice daily for 12 weeks
  2. Placebo (inactive) capsules twice daily for 12 weeks

Neither the participants, their families, nor the researchers will know who is receiving celecoxib versus placebo during the study. This is called a “double-blind” design and helps ensure the results aren’t biased.

The children will continue their usual OCD treatments during the 12-week study period. They’ll have regular check-ups, including:

  • Assessments of their OCD symptoms using standardized rating scales
  • Monitoring for any side effects
  • Blood tests to check for safety

After 12 weeks, the researchers will compare OCD symptoms between the celecoxib and placebo groups to see if the medication led to greater improvement.

What the Study May Reveal

If celecoxib does prove effective, it could provide a new treatment option for children with OCD, especially those who haven’t responded well to standard therapies. Having more treatment choices is important, as OCD can severely impact a child’s functioning and quality of life when not adequately controlled.

Even if celecoxib itself isn’t effective, the study may provide valuable information about the relationship between inflammation and OCD symptoms in children. This could guide future research into other anti-inflammatory approaches for treating OCD.

Potential Risks and Considerations

As with any medication, there are potential risks to consider with celecoxib. Common side effects can include stomach upset, headache, and dizziness. More serious but rare risks include ulcers, bleeding, and cardiovascular events.

The researchers will closely monitor participants for any side effects throughout the study. They’ve also put safeguards in place, like excluding children with certain medical conditions that could increase risks.

It’s important to note that even if celecoxib shows promise in this initial study, more research would be needed to confirm its safety and effectiveness before it could be recommended as a treatment for childhood OCD.

The Bigger Picture

This study is part of a growing area of research exploring the connections between inflammation, the immune system, and mental health conditions. Scientists are increasingly recognizing that there may be important links between body-wide inflammation and brain function.

Other studies are looking at anti-inflammatory approaches for conditions like depression and schizophrenia. The ACE-OCD trial adds childhood OCD to this line of inquiry.

By testing celecoxib in children with OCD, the researchers hope to not only find a potential new treatment but also gain insights into the underlying biology of the disorder. This could open up new avenues for developing other innovative OCD treatments in the future.

Conclusions

  • The ACE-OCD trial is testing whether the anti-inflammatory drug celecoxib can help improve OCD symptoms in children when added to standard treatments.
  • This study is the first clinical trial of an anti-inflammatory medication specifically for childhood OCD.
  • The results could provide valuable information about the role of inflammation in OCD and potentially lead to new treatment options for children who don’t respond well to current therapies.
  • More research would be needed to confirm safety and effectiveness before celecoxib could be recommended as an OCD treatment, even if this initial study shows promise.
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