胃癌のHER2染色で特徴的な所見が得られましたのでアップします。これぞheterogeneityです。韓国では胃癌のハーセプチン治療が、例によって、日本より一足早く認可されています。病院四天王のひとつで電機メーカー系のメディカルセンターの病理と交流していますが、そこでは外科切除標本のほぼ全例にHER2検査をしていると聞きました。
Her2 IHC Scoring Proposal –acc. Pre-ToGA Study
DakoCytomation HercepTest™ (mod. for Gastric Cancer)
0: No / membrane staining in <10% of tumour cells
1+: Faint / barely perceptible membrane staining in >10%; cells only stained in part of their membrane
2+: Weak to moderate complete or baso-lateral membrane staining detected in >10% of tumour cells
3+: Moderate to strong complete or baso-lateral membrane staining in >10% of tumour cells
Biopsy samples with cohesive either IHC 3+ and ⁄ or FISH+ clones are considered positive. Irrespective of size, i.e. <10%
(Hofmann et al. Histopathology 52:797-805, 2008)
Her2 IHC Scoring Proposal –acc. Pre-ToGA Study
DakoCytomation HercepTest™ (mod. for Gastric Cancer)
0: No / membrane staining in <10% of tumour cells
1+: Faint / barely perceptible membrane staining in >10%; cells only stained in part of their membrane
2+: Weak to moderate complete or baso-lateral membrane staining detected in >10% of tumour cells
3+: Moderate to strong complete or baso-lateral membrane staining in >10% of tumour cells
Biopsy samples with cohesive either IHC 3+ and ⁄ or FISH+ clones are considered positive. Irrespective of size, i.e. <10%
(Hofmann et al. Histopathology 52:797-805, 2008)
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