广东梅州客家人群甲状腺癌BRAF基因V600E突变特点分析
2021-06-22曾庆欣饶辉王悦冬赖烨钤钟海烽
曾庆欣?饶辉?王悦冬?赖烨钤?钟海烽
【摘要】目的 探讨广东梅州客家人群甲状腺癌鼠类肉瘤滤过性毒菌致癌同源体B1 (BRAF)基因V600E突變特点。方法 收集316例广东梅州客家地区的甲状腺癌患者的临床资料及BRAF基因V600E突变检测结果,对BRAF基因V600E突变与肿瘤特征的关系进行单因素分析和多因素Logistic回归分析。结果 316例患者BRAF基因V600E总体突变率为75.3% (238/316),其中乳头状癌突变率为77.0%(238/309)。单因素分析显示BRAF基因V600E突变型患者肿瘤径线较小,纵横比大于1、微钙化比例较高,Ⅵ区和颈侧区淋巴结转移比例较低(P均< 0.05);多因素Logistic回归分析提示BRAF V600E突变与Ⅵ区淋巴结转移(OR = 2.289, 95% CI = 1.283 ~ 4.081, P = 0.005)、超声回声(OR = 0.419, 95% CI = 0.209 ~ 0.841, P = 0.014)及粗大钙化(OR = 3.673, 95% CI = 1.395 ~ 9.668, P = 0.008)有关。结论 广东梅州客家地区人群甲状腺癌BRAF基因V600E突变率较高,BRAF基因V600E突变者易发生Ⅵ区淋巴结转移。
【关键词】BRAF V600E;基因突变;甲状腺癌;客家
Mutation characteristics of BRAF V600E in thyroid carcinoma patients from Meizhou Hakka area: a single center study of 316 cases Zeng Qingxin, Rao Hui, Wang Yuedong, Lai Yeqian, Zhong Haifeng. Department of Thyroid Surgery, Meizhou Peoples Hospital//Meizhou Hospital Affiliated to Sun Yat-sen University, Meizhou 514031, China
Corresponding author, Zeng Qingxin, E-mail: zengqingxin87@ 126. com
【Abstract】Objective To summarize the mutation characteristics of V-raf munine sarcom viral oncogene homolog (BRAF) V600E in Meizhou Hakka patients with thyroid carcinoma. Methods Clinical data and BRAF V600E detection results of 316 thyroid carcinoma patients from Meizhou Hakka area were collected. The relationship between BRAF V600E mutation and tumor characteristics was analyzed by univariate and multivariate logistic regression analyses. Results The overall BRAF V600E mutation rate was 75.3% (238/316) of thyroid carcinoma patients from Meizhou Hakka area, and 77.0% (238/309) for the mutation rate of papillary thyroid carcinoma. Univariate analysis suggested that patients with BRAF V600E mutation showed smaller tumor diameter, higher proportion of aspect ratio of > 1 and microcalcification, less proportion of lymph node metastasis in the VI and lateral cervical regions (all P < 0.05). Multivariate logistic regression analysis indicated that BRAF V600E mutation was significantly associated with lymph node metastasis in the VI region (OR = 2.289, 95%CI = 1.283-4.081, P = 0.005), ultrasonic echo (OR = 0.419, 95%CI = 0.209-0.841, P = 0.014) and gross calcification (OR = 3.673, 95%CI = 1.395-9.668, P = 0.008). Conclusion The BRAF V600E mutation rate of thyroid carcinoma patients from Meizhou Hakka area is relatively high. BRAF V600E mutation is prone to lymph node metastasis in the VI region.
【Key words】V-raf munine sarcom viral oncogene homolog V600E;Gene mutation;
Thyroid carcinoma;Hakka
甲状腺癌是目前发病率最高的内分泌肿瘤,其中乳头状癌最常见,约占甲状腺癌的80% ~ 90%[1-2]。大部分甲状腺癌恶性程度低,预后好,但也有小部分预后不佳,早期可出现淋巴结转移。年龄、病理类型、肿瘤大小、肿瘤分期、基因突变促使肿瘤细胞增殖侵袭等是影响甲状腺癌预后的重要因素[3-4]。
近年来有研究表明鼠类肉瘤滤过性毒菌致癌同源体B1(BRAF)基因突变与甲状腺癌的诊断及预后相关[5]。BRAF基因位于人染色体7q34,含有18个外显子,最常见的突变类型是1799位的胸苷酸被腺苷酸替代(T1799A),导致翻译蛋白质的第600位密码子由缬氨酸转变成谷氨酸(V600E)[6]。该突变使丝裂原活化蛋白激酶通路活化,导致细胞异常增殖[7]。BRAF 基因在不同病理类型的甲状腺癌中的V600E突变率不同,文献报道在29% ~ 94%不等[3, 8-9]。BRAF基因V600E突变与肿瘤的高侵袭性、高复发性有关,影响肿瘤細胞的包膜外浸润、淋巴结转移、肿瘤多灶性、治疗有效性[10-12]。……p>
