HFE Variants and Brain Iron
Key Point
HFE variants are not just liver/iron-panel variants. They can influence brain iron distribution and neurobiology.
Pathway Overview
Colour Key
🟤 HFE | 🔵 Brain region | 🟣 Effect | ⚫ Outcome
flowchart TD
A[HFE C282Y/H63D] --> B[Altered Brain Iron Handling]
B --> C[Regional Iron Accumulation]
C --> D[Basal Ganglia]
C --> E[Substantia Nigra]
D --> F[Dopamine Dysregulation]
E --> F
B --> G[Impaired Myelination]
B --> H[Oxidative Stress]
H --> I[ROS Generation]
I --> J[Neuronal Vulnerability]
F --> K[ADHD Symptoms]
G --> L[Cognitive Effects]
J --> L
classDef hfe fill:#d2b4de,stroke:#7d3c98,color:#1a0422
classDef region fill:#85c1e9,stroke:#2471a3,color:#0a1929
classDef effect fill:#d7bde2,stroke:#8e44ad,color:#1a0422
classDef outcome fill:#f7dc6f,stroke:#b7950b,color:#1a1400
class A,B hfe
class C,D,E region
class F,G,H,I,J effect
class K,L outcomeEvidence
-
Kalpouzos G et al. Neuropsychopharmacol Rep 2021;41(3):393-404 (PMC8411306)
- C282Y and/or H63D carriage associated with altered blood and brain iron measures
- Associations with cognitive/motor outcomes examined in healthy adults
-
Connor JR. PMID: 21346098
- HFE variants linked to altered brain iron handling and oxidative stress models
-
Kim Y, Connor JR. Mol Aspects Med 2020;75:100867
- HFE genotype modifies mechanisms and presentation across neurological conditions
-
Marshall Moscon SL, Connor JR. Int J Mol Sci 2024;25(6):3334
- Review on HFE mutations in neurodegeneration and hormesis framework
Relevance To Your Context
Your C282Y/H63D genotype plus ADHD/autism and fatigue may involve overlapping pathways:
- peripheral iron loading tendency
- potential CNS iron-handling differences
- oxidative stress vulnerability
This is hypothesis-generating and should not be over-interpreted clinically without targeted imaging/neurology context.