Aberrant CD25 and Increased CD123 Expression Are Common in Acute Myeloid Leukemia with &lt;i&gt;KMT2A&lt;/i&gt; Partial Tandem Duplication and Are Associated with &lt;i&gt;FLT3&lt;/i&gt; Internal Tandem Duplication. The gene discussed is FLT3; the disease is acute myeloid leukemia.