According to Wikipedia
“Pearson syndrome is a mitochondrial disease characterized by sideroblastic
anemia and exocrine pancreas dysfunction. Other clinical features are failure
to thrive, pancreatic fibrosis with insulin-dependent diabetes and exocrine
pancreatic deficiency, muscle and neurologic impairment, and, frequently, early
death. It is usually fatal in infancy. The few patients who survive into
adulthood often develop symptoms of Kearns–Sayre syndrome. It is caused by a
deletion in mitochondrial DNA. Pearson syndrome is very rare, less than a
hundred cases have been reported in medical literature worldwide”.
That would
be why I hadn’t heard of the condition before…
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