Department of Oral Diagnosis, Semiology and Oral Pathology Areas, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, Brazil.
Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
J Oral Pathol Med. 2020 May;49(5):386-394. doi: 10.1111/jop.12970. Epub 2019 Nov 16.
The presence of the CRTC1-MAML2 translocation has been described in mucoepidermoid carcinoma (MEC) as a predictor of better survival rates. However, the real prognostic value of the translocation has been debated due to recent controversial findings. The aim of this study was to perform a systematic review to understand the prognostic potential of the CRTC1-MAML2 translocation in MEC. An electronic search was carried out using the MEDLINE/PubMed, EMBASE and Scopus databases. Articles that assessed the association between the CRTC1-MAML2 translocation and survival of MEC patients were selected for the systematic review. Ten published articles were included in the qualitative synthesis. The prevalence of the translocation varied from 33.7% to 69.7%. Seven studies observed a significant association between the presence of the CRTC1-MAML2 translocation and a favourable clinical outcome, which could improve disease-free, disease-specific or overall survival. Five studies were included in the quantitative synthesis. Fixed-effects model confirmed that translocation-positive patients have a decreased risk of death (combined odds ratio 0.08, 95% confidence interval - 0.03-0.23, P < .00001). The detection of the CRTC1-MAML2 translocation appears to be useful as a prognostic factor in MEC. However, the level of evidence is not as high as it could be once important limitations were found in the published studies.
CRTC1-MAML2 易位的存在已在黏液表皮样癌 (MEC) 中被描述为生存率较高的预测因子。然而,由于最近有争议的发现,该易位的实际预后价值一直存在争议。本研究旨在进行系统评价,以了解 CRTC1-MAML2 易位在 MEC 中的预后潜力。使用 MEDLINE/PubMed、EMBASE 和 Scopus 数据库进行了电子检索。选择评估 CRTC1-MAML2 易位与 MEC 患者生存之间关联的文章进行系统评价。纳入了 10 篇已发表的文章进行定性综合分析。易位的发生率从 33.7%到 69.7%不等。7 项研究观察到 CRTC1-MAML2 易位与良好的临床结局之间存在显著关联,这可能改善无病、疾病特异性或总生存率。有 5 项研究纳入了定量综合分析。固定效应模型证实,易位阳性患者的死亡风险降低(合并优势比 0.08,95%置信区间 0.03-0.23,P < 0.00001)。CRTC1-MAML2 易位的检测似乎可用作 MEC 的预后因素。然而,由于在已发表的研究中发现了重要的局限性,其证据水平并没有像预期的那样高。