近日来自厦门大学、南方医科大学等8家机构的科研人员联合在国际分子诊断学权威刊物Journal of Molecular Diagnostics(分子诊断杂志)上发表了题为“A Melting Curve Analysis–Based PCR Assay for One-Step Genotyping of beta-Thalassemia Mutations: A Multicenter Validation”( 基于熔解曲线分析的PCR方法用于beta-地中海贫血突变的一步法分型:多中心验证)的研究论文,引起了国际同行的关注。
生物通报道 近日来自厦门大学、南方医科大学等8家机构的科研人员联合在国际分子诊断学权威刊物Journal of Molecular Diagnostics(分子诊断杂志)上发表了题为“A Melting Curve Analysis–Based PCR Assay for One-Step Genotyping of beta-Thalassemia Mutations: A Multicenter Validation”( 基于熔解曲线分析的PCR方法用于beta-地中海贫血突变的一步法分型:多中心验证)的研究论文,引起了国际同行的关注。
同期出版的杂志为上述论文专门配发了评论文章,来自美国华盛顿大学医学院的两名血液病权威专家高度评价了该文的价值,认为“这是一个分子诊断学检测真实评价的出色例子(This study is an excellent example of a real-world validation of a molecular diagnostic test)”,认为所采用的技术“超越了beta-地中海贫血本身,可以广泛用于其它基因突变的筛查,如引起乳腺癌BRCA基因和引起囊性纤维化的CFTR基因”。两位作者还特别肯定了这一新型技术的低成本和高通量,并期待未来更多的应用。
Journal of Molecular Diagnostics是美国分子病理学学会的唯一官方刊物,由美国研究病理学会出版。该杂志仅为极少数重要论文配发评论文章,且均由主编特邀国际知名专家撰写。上述评论文章是该刊本年度迄今唯一一篇。论文发表后,国际基因组领域的著名网站Genome Web通过电子邮件采访了作者,并于7月27日以“中国研究团队开发beta-地中海贫血基因熔解曲线检测技术”为题,对论文结果以及相关研究进行了详细报道。报道发出后,随即在西方多个生物医学网站获得转载。
(生物通:何嫱)
生物通推荐原文摘要:
A Melting Curve Analysis–Based PCR Assay for One-Step Genotyping of β-Thalassemia Mutations:
The increasing number of disease-causing mutations demands a simple, direct, and cost-effective diagnostic genotyping technique capable of detecting multiple mutations. This study validated the efficacy of a novel melting curve analysis–based genotyping assay (MeltPro HBB assay) for 24 β-thalassemia mutations in the Chinese population. The diagnostic potential of this assay was evaluated in 1022 pretyped genomic DNA samples, including 909 clinical cases of β-thalassemia minor or major, using a double-blind analysis in a multicenter validation study. Reproducibility of the assay was 100%, and the limit of detection was 10 pg per reaction. All 24 β-thalassemia mutations were accurately genotyped, and β-thalassemia genotypes were correctly determined in all 1022 samples, yielding overall sensitivity and specificity of 100%. The concordance rate was 99.4% between this assay and the reference method. It was concluded that the MeltPro HBB assay is useful for reliable genotyping of multiple β-thalassemia mutations in clinical settings and may have potential as a versatile method for rapid genotyping of known mutations because of its high throughput, accuracy, ease of use, and low cost.