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Phenotypic Characteristics and Diagnoses of Patients Referred to an Iron Overload Clinic

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Abstract

Background

There are limited data on the phenotypic differences between patients with hereditary hemochromatosis (HH) and other forms of iron overload.

Aims

To describe and compare patients suspected of having iron overload disease.

Methods

Patients were evaluated at a university iron overload clinic over a 5-year period. Biochemical and clinical profiles of patients with HH and non-HH causes of suspected iron overload were retrospectively compared.

Results

A total of 270 patients were evaluated during the enrollment period, and 137 (51%) were diagnosed with HH. The most common reasons for referral were elevated serum iron markers (155 patients), followed by positive family history (40 patients), and known HH (75 patients). In patients without HH referred for suspected iron overload, the most common diagnoses were nonalcoholic fatty liver disease (NAFLD) (24%), chronic hepatitis C infection (14%), and alcohol related liver disease (9%). Of the patients with HH, 108 were C282Y homozygotes, 20 were compound heterozygotes (C282Y/H63D), and nine had neither mutation. The following clinical characteristics were significantly different (p < 0.05) between patients with HH and all other referred patients: arthralgia (42 vs. 16%) and decreased libido (11 vs. 4%). There was a non-significant trend towards increased fatigue (44 vs. 33%), diabetes (10 vs. 6%), impotence (8 vs. 4%), and hypothyroidism (10 vs. 6%) in the HH group.

Conclusions

(1) A large proportion of patients referred for suspected iron overload have diagnoses other than HH. (2) NAFLD, chronic hepatitis C, and chronic alcohol use were the most common alternative diagnoses. (3) Arthralgia and fatigue are the most common symptoms among patients with HH.

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Acknowledgments

This study was supported in part by NIH grant DK02957 to Kris V. Kowdley, MD.

Competing Interests

The authors declare that they have no competing interests.

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Authors and Affiliations

  1. Digestive Disease Institute, Liver Center of Excellence, Virginia Mason Medical Center, 1201 9th Ave, Seattle, WA, USA

    John B. Dever, Dorothy Wallace & Kris V. Kowdley

  2. University of Washington School of Medicine, Seattle, WA, USA

    Mark A. Mallory & Kris V. Kowdley

  3. Williams College, Williamstown, MA, USA

    Julie E. Mallory

Authors
  1. John B. Dever
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  2. Mark A. Mallory
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  3. Julie E. Mallory
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  4. Dorothy Wallace
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  5. Kris V. Kowdley
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Corresponding author

Correspondence to Kris V. Kowdley.

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Authors’ contributions

J.B.D. contributed to the design, provided intellectual content, created the figures and table, and drafted the manuscript. M.A.M., J.E.M., and D.W. contributed equally by collecting and analyzing the data. K.V.K. designed the study, revised the manuscript, and provided important intellectual content. All authors read and approved the final manuscript.

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Dever, J.B., Mallory, M.A., Mallory, J.E. et al. Phenotypic Characteristics and Diagnoses of Patients Referred to an Iron Overload Clinic. Dig Dis Sci 55, 803–807 (2010). https://doi.org/10.1007/s10620-009-1080-1

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  • DOI: https://doi.org/10.1007/s10620-009-1080-1

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