The researchers found that he and three members of his family had two disease-causing mutations in one gene.

VOA: special.2010.03.23

It was a gene that was causing a cell to be malignant and to divide without control, for example.

例如,一个会使细胞恶化,并不受控制地无限分裂的基因

耶鲁公开课 - 生物医学工程探索课程节选

What if this is a gene that's causing a cell to be cancerous?

但假如是个能导致细胞癌变的基因呢

耶鲁公开课 - 生物医学工程探索课程节选