Research shows that over 200 genes work differently in the livers of Black and White individuals, and these genetic differences may explain why metabolic liver disease (MASLD) affects racial groups at different rates and speeds. According to Gram Research analysis of liver tissue from over 300 people, genes involved in disease progression were significantly more common among these race-specific genes, with different genes driving disease in each group—UCN3 and PRSS3 in Black individuals versus MMP15, LAMB2, LEPR, and others in White individuals. These genetic differences became more pronounced as liver disease advanced, suggesting that biology plays an important role in racial disparities in liver disease.
Scientists discovered that differences in how genes work in the liver may explain why metabolic liver disease (MASLD) affects Black and White people at different rates. Researchers studied liver tissue from over 300 people and found more than 200 genes that work differently between racial groups. These genetic differences became more noticeable as liver disease got worse. According to Gram Research analysis, understanding these biological differences could help doctors create better prevention and treatment plans tailored to different populations, moving beyond just looking at diet and lifestyle factors.
Key Statistics
A 2026 analysis of liver tissue from over 300 individuals published in PLOS ONE identified more than 200 genes with significantly different activity levels between Black and White people, suggesting biological mechanisms contribute to racial disparities in metabolic liver disease.
Research from 300+ liver biopsy samples found that genes associated with disease progression were significantly enriched among race-specific genes, with UCN3 and PRSS3 identified as key drivers in Black individuals and MMP15, LAMB2, LEPR, ELOVL2, CD48, COL5A2, and ICAM1 in White individuals.
A 2026 study of liver disease progression across four disease stages found that genetic expression differences between racial groups became increasingly pronounced with advancing disease severity, indicating race-specific biological mechanisms may play a larger role in advanced liver disease.
The Quick Take
- What they studied: Whether differences in how genes are turned on and off in the liver explain why some racial groups get metabolic liver disease more often than others
- Who participated: Over 300 Black and White individuals who had liver biopsies during weight-loss surgery, with livers ranging from completely healthy to severely diseased
- Key finding: Researchers identified more than 200 genes that work differently between Black and White individuals, with certain genes appearing to drive disease progression differently in each group
- What it means for you: This research suggests that one-size-fits-all approaches to preventing and treating liver disease may not work equally well for everyone. Future treatments might need to be customized based on genetic differences, though more research is needed before doctors can use this information clinically.
The Research Details
Scientists looked at existing data from liver tissue samples taken from over 300 people during bariatric (weight-loss) surgery. They compared how genes were expressed—essentially, which genes were active or inactive—between Black and White individuals. The researchers organized people into four groups based on how healthy their livers were: completely normal, fatty liver disease, fatty liver with inflammation, and fatty liver with scarring. By comparing gene activity patterns across these groups and between racial groups, they could identify which genes might be driving disease progression differently in Black versus White people.
Previous research showed that Black Americans get metabolic liver disease more often and it progresses faster, but scientists didn’t fully understand why. While factors like diet and exercise matter, they don’t explain all the differences. This study looked at the biological level—actual genetic differences—to find clues about what’s happening inside liver cells that might make some people more vulnerable to disease.
This study used real tissue samples from actual patients rather than just computer models, which makes the findings more reliable. The researchers analyzed a large dataset with over 300 participants. However, the study was observational, meaning researchers looked at existing data rather than randomly assigning people to different treatments. The findings suggest biological mechanisms but don’t prove cause-and-effect relationships. More research is needed to confirm these findings and understand how to use them clinically.
What the Results Show
The researchers found 200+ genes that showed different activity levels between Black and White individuals. Importantly, genes known to be involved in liver disease progression were significantly more common among these race-specific genes, suggesting that genetic differences genuinely contribute to disease risk—not just coincidentally. As liver disease got worse (moving from normal liver to fatty liver to scarred liver), the differences in gene activity between racial groups became even more pronounced. This pattern suggests that genetics may play an increasingly important role as disease advances. In Black individuals, two genes called UCN3 and PRSS3 appeared to be key drivers of disease progression. In White individuals, a different set of seven genes (MMP15, LAMB2, LEPR, ELOVL2, CD48, COL5A2, and ICAM1) seemed to be more important.
The divergence in gene expression patterns between racial groups increased with disease severity, suggesting that race-specific biological mechanisms become more important in advanced disease stages. This finding is significant because it indicates that prevention and early treatment strategies might need to be different from strategies for advanced disease. The identification of specific candidate genes in each racial group provides potential targets for future drug development and personalized medicine approaches.
Previous research documented that Black Americans experience higher rates of metabolic liver disease and faster progression, but explanations focused mainly on social, economic, and lifestyle factors. This study adds an important biological dimension by showing that genetic differences in how liver cells function may also contribute. The findings don’t replace the importance of addressing diet, exercise, and socioeconomic factors—they complement that understanding by revealing that biology also plays a role.
The study analyzed existing data rather than following people over time, so researchers couldn’t prove that these gene differences actually cause disease progression. The study included only Black and White individuals, so findings may not apply to other racial or ethnic groups. Researchers identified candidate genes but didn’t test whether changing these genes would actually prevent or treat disease. Finally, the study doesn’t explain why these genetic differences exist or how they interact with environmental and lifestyle factors.
The Bottom Line
This research is still in early stages and not yet ready to guide individual medical decisions. However, it suggests that future liver disease prevention and treatment should consider racial and genetic differences. If you have risk factors for liver disease (obesity, diabetes, metabolic syndrome), work with your doctor on proven strategies like weight loss, exercise, and managing blood sugar. This research supports the importance of personalized medicine approaches, though clinical applications are still being developed. Confidence level: Moderate—findings are promising but require confirmation.
This research is most relevant for people at risk of metabolic liver disease, particularly Black Americans who experience higher disease rates. It’s also important for doctors and researchers developing prevention and treatment strategies. People with family history of liver disease or metabolic conditions should be aware that genetic factors may influence their risk. However, these findings don’t change current medical recommendations for anyone at this time.
This is basic research identifying biological mechanisms, not a clinical breakthrough. It typically takes 5-10 years for findings like these to translate into new medical treatments or personalized prevention strategies. In the near term, this research may influence how doctors think about liver disease risk in different populations and guide future research directions.
Frequently Asked Questions
Why do Black people get fatty liver disease more often than White people?
Research shows genetic differences in how liver cells function may contribute to higher disease rates in Black Americans. A 2026 study of 300+ people found 200+ genes work differently between racial groups, with certain genes driving disease progression more strongly in Black individuals. However, genetics is only part of the picture—diet, exercise, and socioeconomic factors also matter significantly.
Can I change my genes to prevent liver disease?
You cannot change your genes, but you can control factors that influence whether genetic risk becomes actual disease. Maintaining healthy weight, exercising regularly, eating nutritious food, and managing blood sugar are proven ways to prevent or slow metabolic liver disease regardless of genetic background. Talk to your doctor about personalized prevention strategies.
Will this research lead to new treatments for liver disease?
This research identifies biological mechanisms that could guide future drug development and personalized treatments, but clinical applications are still years away. The findings highlight specific genes that might become treatment targets, but scientists must first confirm these genes actually cause disease and develop safe ways to modify them.
Should I get genetic testing for liver disease risk?
Genetic testing for metabolic liver disease is not yet standard medical practice. Current recommendations focus on proven prevention strategies: maintaining healthy weight, exercising, eating well, and getting regular blood tests if you have risk factors like obesity or diabetes. Talk to your doctor about whether genetic testing might be appropriate for your situation.
Does this mean my race determines whether I’ll get liver disease?
No. Race influences biological risk, but it doesn’t determine your fate. Many Black Americans never develop liver disease, and many White Americans do. Your actual risk depends on genetics, lifestyle choices, diet, exercise, weight, and other health conditions. Focus on controllable factors while being aware that your genetic background may influence your individual risk level.
Want to Apply This Research?
- Track liver health markers that your doctor monitors: ALT and AST enzyme levels (from blood tests), which indicate liver inflammation. Record these quarterly or as recommended by your physician, noting any changes over time.
- Log daily habits that protect liver health: minutes of exercise, servings of vegetables, alcohol consumption (if applicable), and weight. Use the app to identify patterns between these behaviors and any liver health markers you’re monitoring with your doctor.
- Set reminders for regular liver function blood tests (typically annual for people at risk). Track weight trends, exercise consistency, and dietary choices month-to-month. Share this data with your healthcare provider to monitor whether lifestyle changes are benefiting your liver health.
This research identifies potential biological mechanisms underlying racial differences in metabolic liver disease but does not yet provide clinical guidance for individual patients. These findings are preliminary and require confirmation through additional research before they can be applied to medical practice. If you have concerns about liver disease risk, consult with your healthcare provider about appropriate screening and prevention strategies based on your individual health profile. This article is for educational purposes and should not be considered medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.