# Mixed dementia

Source: https://onco.cc/diagnoses/mixed-dementia/  
OnCo record `mixed-dementia` (Diagnosis). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

Mixed dementia means more than one brain disease is contributing, often Alzheimer’s pathology plus vascular injury. Trial results from pure Alzheimer’s cohorts may not apply unchanged.

## Summary

Autopsy series show mixed pathology is common. A living diagnosis of mixed dementia is a clinical judgement. Antibody trials largely enrolled people with biomarker-supported Alzheimer’s disease and excluded substantial vascular or other disease. Care still follows the person’s symptoms, safety, and vascular risks.

## Fields

- Kind: Diagnosis
- Last checked: 2026-09-21
- Tags: dementia-atlas
- Group: dementia

## Sources

- Wikipedia: https://en.wikipedia.org/wiki/Mixed_dementia
- Alzheimer’s Association: mixed dementia: https://www.alz.org/alzheimers-dementia/what-is-dementia/types-of-dementia/mixed-dementia

## Connected records

- diagnoses: [Alzheimer’s disease](https://onco.cc/diagnoses/alzheimers-disease/), [Dementia (umbrella)](https://onco.cc/diagnoses/dementia/), [Vascular dementia](https://onco.cc/diagnoses/vascular-dementia/)
- terms: [Mixed dementia](https://onco.cc/terms/da-term-mixed-dementia/)
- bottlenecks: [Trial populations that skip mixed disease](https://onco.cc/bottlenecks/da-bn-trial-exclusion/), [Wrong-subtype treatment](https://onco.cc/bottlenecks/da-bn-subtype-misclassification/)
- ideas: [Antibody trials that enrol mixed and comorbid disease](https://onco.cc/ideas/da-idea-inclusive-anti-amyloid-trials/)

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JSON: https://onco.cc/api/v1/entities/mixed-dementia.json