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NBME 23 Answers

nbme23/Block 4/Question#19

A 6-month-old male infant is brought to the ...

Regulatory T lymphocytes

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submitted by lfsuarez(66),

This patient presents with IPEX (immunodysregulation polyendocrinopathy enteropathy X-linked) which is a mutation of the FOXP3 gene which is a regulator for the Regulatory T cell lineage. It leads to the dysfunction of regulatory T-cells and the subsequent autoimunity.