Skip to main content
. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Breast J. 2021 Feb 18;27(4):314–321. doi: 10.1111/tbj.14205

Figure 3.

Figure 3.

A, Fluorescence in situ hybridization performed on FFPE using a JAK2 specific break-apart probe set showing a split signal pattern, indicative of a JAK2 rearrangement. B, Large anaplastic cells with irregular and multilobated nuclei with occasional “hallmark” cells (H&E, 1000x, oil immersion); the anaplastic cells strongly and uniformly express CD30 (400x); the cells lack expression of ALK1 (400x); the anaplastic cells show strong expression of pSTAT3 (400x).