Research · Summary
CASK and the immune system
Can CASK affect the immune system? A summary of a January 2025 study by Huang et al.
Most families affected by CASK-related disorders understand that the CASK gene influences brain development, affecting movement, speech and learning. However, recent research suggests it may also play a role in immune function.
A study published in January 2025 by Huang et al. indicates that "CASK helps fight infections — specifically, by helping immune cells send out important antiviral warning signals."
What did the study find?
The research examined CASK's function in macrophages — immune cells that combat infections. Key findings:
- When H5N1 flu virus infects these cells, CASK relocates into the cell nucleus, where infection-response instructions are stored.
- CASK facilitates the release of interferon-alpha, a critical antiviral signal alerting neighbouring cells to viral threats.
- Without functional CASK, these cells cannot effectively transmit warning signals, resulting in increased inflammation in infected lung tissue.
Why does this matter for families affected by CASK disorders?
This research focused on immune function rather than neurological effects, so its implications for children with CASK mutations remain unclear. The study demonstrates that "CASK is more than just a brain protein — it might also help the immune system work properly."
Currently, there is no reason for concern. This research does not suggest children with CASK-related disorders have compromised immunity. Rather, it raises important questions for future investigation regarding how CASK mutations might influence infection response.