Case in the left panel illustrates a NE-high SCLC (NE-score = 229) showing strong diffuse expression of all conventional NE markers and TTF-1, and negative POU2F3. Other cases are examples of NE-low (Case IDs 23 and 25) or entirely negative (Case ID 29) SCLC with robust expression of POU2F3.
Abbreviations: CHRA chromogranin A, NE neuroendocrine, SYN synaptophysin