2023
High Interobserver Variability Among Pathologists Using Combined Positive Score to Evaluate PD-L1 Expression in Gastric, Gastroesophageal Junction, and Esophageal Adenocarcinoma
Robert M, Rüschoff J, Jasani B, Graham R, Badve S, Rodriguez-Justo M, Kodach L, Srivastava A, Wang H, Tang L, Troncone G, Rojo F, Van Treeck B, Pratt J, Shnitsa I, Kumar G, Karasarides M, Anders R. High Interobserver Variability Among Pathologists Using Combined Positive Score to Evaluate PD-L1 Expression in Gastric, Gastroesophageal Junction, and Esophageal Adenocarcinoma. Modern Pathology 2023, 36: 100154. PMID: 36925069, DOI: 10.1016/j.modpat.2023.100154.Peer-Reviewed Original ResearchConceptsCombined positive scorePD-L1 expressionCheckpoint inhibitor therapyPD-L1Tumor cellsImmune cellsIntraclass correlation coefficientInhibitor therapyInterpretation of PD-L1 expressionPD-L1 combined positive scoreInterobserver variabilityBiopsy samplesEvaluate PD-L1 expressionImmune checkpoint inhibitor therapyInterpathologist agreementProgrammed death-ligand 1PD-L1 immunohistochemistryDeath-ligand 1Variable intensity of stainingIntensity of stainingPositive scoresRetrospective histologic reviewPretreatment biopsiesTumor stainingHistologic review
2020
Immune Checkpoint Inhibitor–Induced Upper Gastrointestinal Tract Inflammation Shows Morphologic Similarities to, but Is Immunologically Distinct From, Helicobacter pylori Gastritis and Celiac Disease
Irshaid L, Robert ME, Zhang X. Immune Checkpoint Inhibitor–Induced Upper Gastrointestinal Tract Inflammation Shows Morphologic Similarities to, but Is Immunologically Distinct From, Helicobacter pylori Gastritis and Celiac Disease. Archives Of Pathology & Laboratory Medicine 2020, 145: 191-200. PMID: 33501492, DOI: 10.5858/arpa.2019-0700-oa.Peer-Reviewed Original ResearchConceptsHelicobacter pylori gastritisUpper gastrointestinal tractCeliac diseasePylori gastritisCPI therapyCD8 ratioDuodenal biopsiesInflammatory changesLymphoid aggregatesGastrointestinal tractAnti-programmed death receptor-1/Anti-cytotoxic T-lymphocyteDeath receptor-1/Immune checkpoint inhibitor therapyImmune-related adverse eventsDeath ligand 1 antibodyColonic mucosal changesGastrointestinal tract inflammationLamina propria CD3Lamina propria inflammationUpper gastrointestinal biopsiesUpper gastrointestinal injuryCheckpoint inhibitor therapyH pylori gastritisCD8 T cells