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Moyamoya disease

Compared within 1 study that had both: 60 people with moyamoya disease and 60 healthy people. 6 genera are less common in people with moyamoya disease, and 6 more common.

A difference is an association: it doesn’t mean these genera cause, prevent or treat moyamoya disease. GMrepo reports this group at the genus level only, so these are genera, not species.

Phylum

Searching opens both lists and shows only matching rows.

Less common in moyamoya disease · 6

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Enterobacter genus in 1 study Healthy 38% moyamoya disease 0%
  2. Slackia genus in 1 study Healthy 48% moyamoya disease 10%
  3. Tyzzerella genus in 1 study Healthy 88% moyamoya disease 52%
  4. Megasphaera genus in 1 study Healthy 83% moyamoya disease 45%
  5. Terrisporobacter genus in 1 study Healthy 48% moyamoya disease 18%

More common in moyamoya disease · 6

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Pseudomonas genus in 1 study Healthy 30% moyamoya disease 95%
  2. Succinivibrio genus in 1 study Healthy 0% moyamoya disease 22%
  3. Methylobacterium genus in 1 study Healthy 3.3% moyamoya disease 30%
  4. Sphingomonas genus in 1 study Healthy 1.7% moyamoya disease 25%
  5. Fusobacterium genus in 1 study Healthy 32% moyamoya disease 68%

Where these numbers come from

Studies
Only GMrepo projects that had people with the condition and healthy people, 10 or more of each. Numbers come from those studies, never from pooling.Sampled in China.
How common
The share of people whose sample has any of it, in the people with the condition and in the healthy people of those same studies. Tested within studies (Cochran–Mantel–Haenszel, corrected for testing many microbes); a difference counts when it is clear and meaningful (Cohen’s h of 0.2 or more).
Strength word
Counted by code from how many studies point the same way: Seen again and again (3 or more, none clearly the other way), Seen more than once (2, the majority), Seen once (1, listed last). Where studies disagree, a row isn’t listed.
Each study
Tap a row for every study’s own numbers, and for how much carriers have.
Analysis
Our analysis of GMrepo data. GMrepo on Data sources · Read the rules

Also compared · 78 genera

Compared within studies that had both, but not listed above.

No meaningful difference · 78
PubMed · human studies and reviews first

Recent research

All research on it
  1. Observational Cerebrovascular diseases · 2025
    Decreased <italic>Lactococcus lactis</italic> and Propionic Acid in Feces of Patients with Moyamoya Disease: Possible Implications of Immune Dysregulation.
    PubMed ↗
  2. Scientific reports · 2022
    Increased abundance of Ruminococcus gnavus in gut microbiota is associated with moyamoya disease and non-moyamoya intracranial large artery disease.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 2 linked papers, last 10 years