Volume 84, Issue 4 pp. 607-613
Original Article

Initial clinical experience with BRAFV600E mutation analysis of core-needle biopsy specimens from thyroid nodules

Sang Hyun Choi

Sang Hyun Choi

Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Jung Hwan Baek

Corresponding Author

Jung Hwan Baek

Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

Correspondence: Jung Hwan Baek, Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-gu, Seoul 138-736, Korea. Tel.: 82 2 3010 4348; Fax: 82 2 476 0090; E-mail: [email protected]Search for more papers by this author
Jeong Hyun Lee

Jeong Hyun Lee

Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Young Jun Choi

Young Jun Choi

Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Eun Ju Ha

Eun Ju Ha

Department of Radiology and the Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

Department of Radiology, Ajou University School of Medicine, Yeongtong-Gu, Suwon, Korea

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Dong Eun Song

Dong Eun Song

Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Jae Kyun Kim

Jae Kyun Kim

Department of Radiology, Chung-Ang University College of Medicine, Dongjak-gu, Seoul, Korea

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Ki-Wook Chung

Ki-Wook Chung

Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Tae Yong Kim

Tae Yong Kim

Department of Endocrinology and Metabolism, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Won Bae Kim

Won Bae Kim

Department of Endocrinology and Metabolism, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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Young Kee Shong

Young Kee Shong

Department of Endocrinology and Metabolism, University of Ulsan College of Medicine, Asan Medical Center, Songpa-Gu, Seoul, Korea

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First published: 27 July 2015
Citations: 5

Summary

Objective

The accurate diagnosis of thyroid nodules is important for making management decisions. The purpose of this study was to evaluate the feasibility of core-needle biopsy with BRAFV600E mutation analysis (CNB + BRAFV600E) and to compare the clinical usefulness of CNB + BRAFV600E and fine-needle aspiration with BRAFV600E mutation analysis (FNA + BRAFV600E) in the diagnosis of thyroid malignancy.

Design, patients and measurements

The results of BRAFV600E mutation analyses of 820 nodules from 820 patients (153 men, 667 women; mean age, 51·1 years), who underwent CNB + BRAFV600E (n = 256) or FNA + BRAFV600E (n = 564) between January 2011 and March 2012 were retrospectively evaluated. The feasibility of CNB + BRAFV600E was assessed by comparing its rate of detection of BRAFV600E mutations and positive predictive value with those of FNA + BRAFV600E. The clinical usefulness of CNB + BRAFV600E was determined by comparing rates of inconclusive results, the additional value of BRAFV600E mutation analysis, diagnostic surgery and diagnostic performance with those of FNA + BRAFV600E.

Results

CNB + BRAFV600E and FNA + BRAFV600E had similar rates of BRAFV600E mutation detection (66·3% vs 64·4%, = 0·883) and positive predictive value (100·0% vs 96·6%, = 0·135). CNB + BRAFV600E had a significantly higher diagnostic accuracy rate (95·7% vs 85·9%, < 0·001), and significantly lower rates of inconclusive results (8·2% vs 51·8%, < 0·001), and diagnostic surgery (8·9% vs 22·3%, = 0·006), than FNA + BRAFV600E.

Conclusions

The greater diagnostic performance of CNB + BRAFV600E and its lower rate of inconclusive results than FNA + BRAFV600E suggest that CNB + BRAFV600E can reduce rates of preventable diagnostic surgery.

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