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Case Reports
. 2006 Aug;155(2):464-6.
doi: 10.1111/j.1365-2133.2006.07318.x.

Acquired erythropoietic protoporphyria as a result of myelodysplasia causing loss of chromosome 18

R P E Sarkany  1 , G Ross, F Willis
Affiliations
Case Reports

Acquired erythropoietic protoporphyria as a result of myelodysplasia causing loss of chromosome 18

R P E Sarkany et al. Br J Dermatol. 2006 Aug.

Abstract

We report a patient aged 73 years, who developed erythropoietic protoporphyria with typical photosensitivity, at the same time as she was diagnosed as having myelodysplastic syndrome. The myelodysplastic clone in her bone marrow completely lacked one of the two copies of chromosome 18. As chromosome 18 is the locus of the ferrochelatase gene, we postulate that this chromosomal deletion led to reduced synthesis of the enzyme in the bone marrow clone, so causing the porphyria. The nature of the remaining ferrochelatase allele was examined by polymorphism analysis and we discuss the insights that this patient's genotype may reveal about the pathogenesis of porphyria in myelodysplasia.

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