03/02/2026
This moment changed the trajectory of my career…
Almost eight years ago, I sat in a lecture about maternal immune activation with a three-month-old at home… and active autoimmunity in my own body.
No one had ever connected those dots for me before.
Here’s what the research shows:
When a mother’s immune system is chronically activated (whether from autoimmune disease, infection, metabolic issues, or other causes) pro-inflammatory cytokines like IL-6, IL-1β, and TNF-α increase.
Those cytokines cross the placenta.
And during critical windows of brain development, they can:
👉Activate fetal microglia
👉Alter neuronal migration
👉Disrupt synapse formation
👉Shift neurodevelopment trajectory
Maternal immune activation (MIA) is one of the most extensively studied prenatal environmental risk factors associated with autism spectrum disorder (ASD).
But there’s a more specific layer that many have never heard of…
A subset of mothers produce IgG autoantibodies that bind specific fetal brain proteins. Because maternal IgG crosses the placenta beginning in the late first trimester, these antibodies can interact with the developing brain.
This pathway is referred to in the literature as maternal autoantibody–related autism (MAR autism).
In published research cohorts, specific combinations of these antibodies have shown very high specificity for mothers of children with autism.
The MARAbio assay reports ~99% specificity for the defined antibody patterns studied, representing an estimated ~20% subtype of autism.
Specificity does not mean inevitability. It means that when these antibody patterns are present, they are rarely seen in mothers of neurotypical children within research populations.
This represents a measurable prenatal risk pathway.
We are now collaborating with a California provider offering MARAbio testing for women who want to assess for these brain-directed autoantibodies before or between pregnancies.
If you’re located in California and would like to schedule a discovery call, comment DISCOVER below and I’ll send details.
Follow for conversations that examine the full picture like immune signaling, genetics, inflammation, and the developing brain.