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자료유형
학술저널
저자정보
황인우 (성균관대학교) 최윤라 (삼성서울병원) 이현우 (삼성서울병원) 황수현 (삼성서울병원) 이보람 (삼성서울병원) 양호빈 (서울대학교 생명공학공동연구원) Chaithanya Chelakkot (Bio-MAX Seoul National University Seoul Korea) 한정호 (성균관대학교)
저널정보
대한암학회 Cancer Research and Treatment Cancer Research and Treatment 제54권 제3호
발행연도
2022.7
수록면
782 - 792 (11page)
DOI
10.4143/crt.2021.843

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PurposeThe incidence of <i>BRAF</i> V600E mutation in non-small cell lung carcinoma (NSCLC) is lower than 2%, which poses difficulties in finding legitimate patients for targeted therapy. We investigated the predictive factors pertaining to <i>BRAF</i> V600E and the effectiveness of the VE1 antibody as a screening method for patient selection.Materials and MethodsThe study was designed into two steps. In a first group, <i>BRAF</i>-mutated NSCLCs were identified from sequencing data to determine the features of <i>BRAF</i> V600E mutation. The results of the first group helped the collection of adenocarcinomas with a papillary or micropapillary pattern but without <i>EGFR</i> or <i>ALK</i> alterations as a second group so that the frequency of <i>BRAF</i> V600E mutation could be calculated. The sensitivity and specificity of the VE1 were compared with <i>BRAF</i> V600E status. ResultsAmong 39 <i>BRAF</i>-mutated NSCLCs in the first group, 20 (51%) were V600E. <i>BRAF</i> V600E mutation was more common in female patients and showed no significant correlation with smoking status. Nineteen cases were adenocarcinomas without <i>EGFR</i> and <i>ALK</i> alterations. The most common patterns of invasion were papillary and micropapillary along with central fibrosis. The sensitivity and specificity of the VE1 were 90.0% and 92.3%, respectively. In the second group, 6.7% of cases were VE1-positive, indicating that the prevalence was significantly higher than that reported in previous studies (0.3-1.8%). Conclusion<i>BRAF</i> V600E-mutated NSCLCs could be enriched with the application of clinicopathologic parameters, which are not perfect. Therefore, additional VE1 immunohistochemistry may be useful as a screening method.

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