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Online Atlas of Stains for Gastric or GEJ Adenocarcinoma: PD-L1 IHC 22C3 pharmDx

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Welcome to the Online Atlas of Stains for Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma: PD-L1 IHC 22C3 pharmDx

PD-L1 testing is an integral part of patient care, making your expertise in diagnostic assessment more important than ever. Use the Atlas of Stains to increase your familiarity and confidence in scoring gastric or GEJ adenocarcinoma specimens stained with PD-L1 IHC 22C3 pharmDx. Combined Positive Score (CPS) is the scoring method used for defining PD-L1 expression in gastric or GEJ adenocarcinoma specimens.

The Atlas of Stains for Gastric or GEJ Adenocarcinoma is a digital repository of gastric or GEJ adenocarcinoma tissue samples stained with PD-L1 IHC 22C3 pharmDx including:

  • PD-L1 staining cases (CPS ≥ 1) that span the full range of PD-L1 expression
  • Non-staining cases
  • Full specimen staining with H&E, Negative Control Reagent (NCR), and primary antibody for each patient

The viewer interface for the Atlas of Stains for Gastric or GEJ Adenocarcinoma features:

  • High-definition, zoomable scans with full-screen and quadrant-view functionality for detailed PD-L1 stain analysis
  • Expert annotations describing areas of interest plus the ability to add your own annotations
  • CPS and diagnostic status for each stain, to verify your own assessment
To begin exploring the Atlas, select one of the case categories from the menu below:
Easy
Intermediate
Challenging
For additional gastric or GEJ adenocarcinoma scoring guidance and practice, refer to the resources and Intended Use below: