Aggressive myoepithelial carcinoma with EWSR1-POU5F1 fusion highly responsive to Ewing sarcoma combination chemotherapy.

Shenoy, Niraj · Cancer · 2020

case_report · Level V

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Abstract

This article describes a case of metastatic, bulky, high‐grade, rapidly progressive myoepithelial carcinoma with <i>EWSR1‐POU5F1</i> fusion originating from the left kidney that demonstrated a dramatic, deep response within 2 cycles of treatment with a regimen used for patients with Ewing sarcoma and an ongoing sustained response of >10 months. To the author's knowledge, this is the first report of a rapid and deep response using a systemic therapy regimen in a patient with myoepithelial carcinoma with <i>EWSR1‐POU5F1</i> fusion.

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