Nature Genetics

Genetic analysis links 60 DNA regions to liver fat in people

An observational analysis of 71,488 European-ancestry UK Biobank participants identified 60 regions linked to liver fat, including 31 not previously reported.

Figure 1 from Nature Genetics
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Figure 1. Jamialahmadi et al.
Genetic association study of 71,488 European-ancestry UK Biobank participantsBiomarkers

Meta-analysis

Limit: Different MRI acquisition and processing methods could distort pooled liver fat associations

Edited by Boris Djordjevic · AgingResearch.News

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In an observational genetic analysis, researchers studied 71,488 European-ancestry participants from the UK Biobank. They assessed liver triglycerides, a type of fat, using magnetic resonance imaging. The team identified 60 independent DNA regions associated with liver fat, including 31 not previously reported. Further analyses nominated candidate genes at 48 of these regions.

The researchers also examined a score combining multiple genetic variants linked to liver fat. People in the highest versus lowest tenth of this score had 2.71-fold higher odds of cirrhosis, or severe liver scarring, and 7.47-fold higher odds of hepatocellular carcinoma, a type of liver cancer.

Why it matters

The work addresses inherited susceptibility to liver diseases that can limit healthy lifespan.

Caveats

These observational genetic associations do not establish cause and effect. The liver-fat analysis involved European-ancestry UK Biobank participants, so its findings may not apply to other ancestry groups.