A STUDY OF TTF1 AND p63 EXPRESSION IN PRIMARY NON-SMALL CELL LUNG CARCINOMA

Dương Thị Thanh Nhàn1,, Huỳnh Thanh Phượng2, Ngô Thị Tuyết Hạnh2
1 Can Tho Oncology Hospital
2 University of Medicine and Pharmacy at Ho Chi Minh City

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Abstract

Background: Chemotherapies or targeted therapies are difference that depend on hostopathological subtype of non-small cell lung cancer group. TTF1 and p63 play an important role in subclassifying non-small cell lung carcinoma. Objectives: The research aims to classify morphology of non-small cell lung carcinoma according to the WHO classification of lung cancer 5th edition and evaluate the rate of TTF1 and p63 expression in non-small cell lung carcinoma. Methods: A retrospective, case series report of primary lung cancer from January-2017 to June-2020 at Ho Chi Minh University of Medicine and Pharmacy Hospital met the critiria of non-small cell lung carcinoma according to post-operative pathologic findings. Immunohistochemistry staining for TTF1 and p63 were carried out for all these cases and the expression was recorded in comparison with normal cells. Results: Out of total 83 cases, 72,3% cases were possitive 3+, 19,8% cases were possitive 2+ and 16,8% cases were negative for TTF1. p63 expression was 4,8% cases possitive 3+, 10,8% cases possitive 2+, 10,8% cases possitive 1+ and 73,5% cases negative for p63. Conclusions: TTF1 and p63 are reliable immunohistochemistry markers for classifying non-small cell lung carcinoma. It is also important to use the WHO classification of lung cancer 5th edition.

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