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Deferiprone challenge test for monitoring iron overload in hepatitis positive thalassemic major patients
Abstract:
Viral hepatitis is common among beta-thalassemia major (BTM) children in Pakistan. Transfusional iron overload in BTM is usually monitored by serum ferritin. But its levels are falsely raised in viral hepatitis and do not reflect the true iron body burden in thalassemic patients. The objective of the study was to develop a test for monitoring iron overload in 'Hepatitis B&C' positive BTM patients by urinary iron excretion (UIE) after oral deferiprone chelation as compared to serum ferritin. We recruited 130 BTM patients from the registry of Thalassaemia centre at Rawalpindi, Pakistan. The patients were grouped into Hepatitis positive and Hepatitis negative based on ELISAtest. Serum ferritin levels were analyzed by kit on Access II. Each patient was given 75mg/kg of deferiprone at morning. Baseline UIE before deferiprone, and 4, 8 12 hours (hrs) UIE after deferiprone were analyzed on Selectra E. One hundred and thirty BTM patients aged 3 to 23 years comprising of Hepatitis positive (n=69) and Hepatitis negative (n=61) participated in the study. Hepatitis positive thalassemic patients had significantly high serum ferritin median (IQ) 4349 (2782-5927) mug/Lthan 3338 (2189-5506) mug/Lin the Hepatitis negative (p=0.001). We did not find any significant change in UIE at 4, 8, and 12 hours between two groups after Deferiprone intake (p=NS). We observed significant positive correlation between serum ferritin and 4 hours UIE in Hepatitis negative patients (r=0.57; p=0.01) but not in the Hepatitis positive patients (r=0.16; p=NS). Deferiprone challenge with measurement of 4 hours UIE is cost effective and non-invasive test rather than serum ferritin for monitoring iron overload in Hepatitis' positive BTM patients.
Insights
Viral hepatitis falsely elevates serum ferritin in beta-thalassemia major (BTM) patients. Urinary iron excretion after deferiprone chelation offers a more accurate method for monitoring iron overload in these patients.
Area of Science:
- Hematology
- Hepatology
- Clinical Chemistry
Background:
- Viral hepatitis is prevalent in beta-thalassemia major (BTM) patients in Pakistan.
- Serum ferritin, commonly used to monitor iron overload in BTM, is unreliable in the presence of viral hepatitis due to falsely elevated levels.
- Accurate monitoring of iron overload is crucial for managing BTM patients with co-existing viral infections.
Purpose of the Study:
- To evaluate urinary iron excretion (UIE) after deferiprone chelation as a reliable marker for monitoring iron overload in BTM patients with Hepatitis B and C.
- To compare the efficacy of UIE with serum ferritin levels in assessing iron burden in this specific patient group.
Main Methods:
- 130 BTM patients were recruited and categorized into Hepatitis positive (n=69) and Hepatitis negative (n=61) groups.
- Serum ferritin levels were measured using Access II.
- Patients received oral deferiprone (75mg/kg), and UIE was measured at baseline, 4, 8, and 12 hours post-administration.
Main Results:
- Hepatitis positive BTM patients exhibited significantly higher median serum ferritin levels compared to Hepatitis negative patients (p=0.001).
- No significant differences in UIE were observed between the two groups at 4, 8, or 12 hours after deferiprone intake (p=NS).
- A significant positive correlation between serum ferritin and 4-hour UIE was found in Hepatitis negative patients, but not in Hepatitis positive patients.
Conclusions:
- The deferiprone challenge test measuring 4-hour UIE is a cost-effective and non-invasive alternative to serum ferritin for monitoring iron overload in BTM patients with viral hepatitis.
- This method provides a more accurate assessment of iron body burden in Hepatitis B and C positive BTM patients.
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