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# Table 2 Immunohistochemical characteristics of pituicytomas

From: Histologic, immunohistochemical, and molecular features of pituicytomas and atypical pituicytomas

Patient | TTF-1 | EMA | S100 | GFAP | Synapto-physin | Ki-67 | SSTR2A | pERK | BRAF V600E |
---|---|---|---|---|---|---|---|---|---|

1 | + | – | + | Focal + | + | 3% | – | + | + |

2 | + | – | + | – | – | < 1% | – | + | – |

3 | + | + | + | – | NP | 4% | Focal + | – | – |

4 | + | – | NP | Focal + | Focal + | NP | – | + | – |

5 | + | NP | NP | + | NP | < 1% | – | + | NP |

6 | + | + | + | + | NP | < 1% | NP | + | NP |

7 | + | Focal + | + | Focal + | NP | 1–3% | – | + | NP |

8 | + | NP | + | NP | NP | NP | – | + | – |

9 | + | – | Focal + | – | NP | < 1% | – | + | NP |

10 (1)^{a}
| + | – | – | NP | NP | 5% | NP | NP | NP |

10 (2)^{a}
| + | – | – | – | NP | 10% | NP | NP | NP |

10 (3)^{a}
| + | NP | NP | – | NP | NP | NP | NP | – |

10 (4)^{a}
| + | – | NP | – | NP | 10% | Focal + | + | – |

11^{a}
| + | – | + | – | + | 10% | – | + | – |

% Positive | 100.0% | 33.3% | 88.9% | 50.0% | 33.3% | 20.0% | 90.9% | 14.3% |