Bone Marrow Iron Predicts Survival in Cirrhosis Patients
Clinicians often monitor liver iron levels to manage chronic liver disease. However, recent research highlights that cirrhosis bone marrow iron levels also play a vital role in prognosis. A new study examines how vertebral bone marrow R2* values correlate with liver iron concentration. This finding is significant for patients who may not show typical liver iron overload signs yet face increased risks.
Significance of Cirrhosis Bone Marrow Iron Measurement
The study analyzed 190 patients using magnetic resonance elastography. Researchers measured R2* values in both the liver and the vertebral bone marrow. Interestingly, they found a moderate correlation between these two measurements. Consequently, bone marrow iron content often reflects the overall iron status of the body. Furthermore, many patients with normal liver iron levels frequently exhibited bone marrow iron overload. This suggests that the bone marrow may sequester iron earlier than the liver in certain cirrhotic conditions.
Prognostic Value and Patient Outcomes
High bone marrow R2* values are not just markers of iron storage. Specifically, the study identified these values as independent predictors of mortality. Patients with elevated bone marrow iron faced significantly lower survival rates. This association remained true even when liver iron levels appeared normal. Therefore, assessing bone marrow iron provides a more comprehensive view of patient health. Doctors should consider this metric when evaluating the long-term outlook for cirrhotic patients.
Frequently Asked Questions
Q1: How does bone marrow iron affect survival in cirrhosis?
Elevated bone marrow iron, measured via R2* relaxometry, serves as an independent predictor of mortality. Higher iron levels in the marrow correlate with decreased survival, even in patients without liver iron overload.
Q2: What is the correlation between liver and bone marrow iron?
There is a moderate positive correlation (r = 0.347) between vertebral bone marrow R2* and liver iron concentration. However, many patients show bone marrow iron overload despite having normal liver iron levels.
References
- Cho SW et al. Bone marrow R2* correlates with liver iron load and is associated with decreased survival in patients with cirrhosis without liver iron overload. Eur Radiol. 2026 May 11. doi: 10.1007/s00330-026-12614-4. PMID: 42115473.
- Nunes LLA et al. High ferritin is associated with liver and bone marrow iron accumulation: Effects of 1-year deferoxamine treatment in hemodialysis-associated iron overload. PLOS ONE. 2024.
- Kowdley KV. Iron Overload in Patients With Chronic Liver Disease. Gastroenterology & Hepatology. 2016.