The genetic defect is rare, so the discoery by itself will not proide an explanation for the more common forms of coronary artery disease, which are caused by a constellation of factors, said Lifton.

• 李夫顿称，该遗传缺陷罕见，所以该发现本身不会给由诸多因素共同导致的冠心病的更多普遍形式提供解释。