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• W4386369705 abstract "GATA3 is a transcription factor involved in embryogenesis of multiple human tissues and in maintaining cell differentiation and tissue homeostasis in the adult organism. GATA3 is also involved in carcinogenesis and regarded as a sensitive marker for urothelial and breast carcinomas, albeit expression in carcinomas of non-breast/urothelial origin has been frequently reported. We sought to examine the extent and intensity of GATA3 expression in various carcinomas, mainly lung, urothelial, and breast and various other primary sites. Patients with breast carcinoma (N=40), carcinoma of the urinary bladder/renal pelvis (N=40), lung carcinoma (N=110) and various other origins (N=45) were included in the study. One hundred and sixty-five patients had a primary tumor diagnosis, and 70 cases had a metastatic tumor diagnosis. Our results showed that GATA3 expression was significantly more common in carcinomas of the breast, urinary bladder and renal pelvis compared to all other origins. All primary and 93% of metastatic urinary bladder carcinomas and 94% of the primary and 80% of metastatic breast carcinomas expressed GATA3. Expression was lower in non-urothelial histology of urinary primaries and in triple negative breast carcinomas. Focal staining, mostly faint, was seen in 5.6% of the primary lung adenocarcinomas and 35% of the primary lung squamous cell carcinomas. More extensive and intense staining was seen in 3.7% of the primary lung adenocarcinomas and 12% of the primary lung squamous cell carcinomas. Expression, mostly focal was also seen in 30% of the metastatic lung carcinomas. Finally, high expression was seen in 12.5% of the other tumors (one metastatic pancreatic carcinoma, one metastatic salivary gland adenocarcinoma NOS, one metastatic squamous cell carcinoma of the skin, one primary uterine cervix serous carcinoma, and one squamous cell carcinoma of the head and neck) and focal expression was present in another 22% of them. No ideal cut-off for positivity for GATA3 staining could be identified. In conclusion our study shows that GATA3 staining has two caveats in its use: the first is that non classical histologies of urothelial carcinomas and TNBC may be negative for the marker and secondly carcinomas of various origins may show (although rarely) intense positivity" @default.
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• W4386369705 date "2023-08-29" @default.
• W4386369705 modified "2023-09-28" @default.
• W4386369705 title "A comprehensive analysis of GATA3 expression in carcinomas of various origins with emphasis on lung carcinomas" @default.
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• W4386369705 doi "https://doi.org/10.4081/monaldi.2023.2641" @default.
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