In part one of this two-part series, Dr. Stacey Clardy and Drs. Ayush Gupta and Kuntal Sen discuss the key clinical features that should shift suspicion from autoimmune encephalitis or demyelinating disease to monogenic mimics.

Show citation:

Gupta A, Sahjwani D, Kahn I, Gombolay GY, Sen K. Monogenic Mimics of Neuroinflammatory Phenotypes in Children and Young Adults: An Evolving Landscape. Neurol Genet. 2025;11(6):e200326. Published 2025 Nov 25. doi:10.1212/NXG.0000000000200326

Show transcript:

Dr. Stacey Clardy:

Hi, this is Stacey Clardy from the Salt Lake City VA in the University of Utah.

For a two-part podcast series, I've been speaking with Ayush Gupta from the University of Nebraska Medical Center and Kuntal Sen from Children's National Hospital in Washington DC about the monogenic disorders that mimic neuroinflammatory disease that are lurking in all of our clinics just waiting to be diagnosed.

Ayush, for the minute, when you're seeing a patient with a presumed autoimmune encephalitis or demyelinating disease, what single cluster of features should instead most strongly push us to think of monogenic mimics at the top of our differential?

Dr. Ayush Gupta:

So when you are seeing a patient with presumed autoimmune encephalitis or a demyelinating disorder, cluster of features such as earlier onset in terms of age, developmental delays, CSF or imaging finding that's non-concordant with the diagnosis such as a non-inflammatory CSF, a symmetric white matter or deep gray matter involvement and relentless progression despite immunotherapy, these are the red flags where you should stop, seriously consider the possibility of a monogenic disorder and reach out to help from colleagues.

Dr. Stacey Clardy:

That's a great list, and we get into far more detail in the two-part podcast series. So please listen to both of those and take a read of the neurology genetics review titled Monogenic Mimics of Neuroinflammatory Phenotypes in Children and Young Adults: An Evolving Landscape.

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