After sequencing the entire genomes of 50 patients’ breast cancer tumors, researchers found that only 10% of the tumors had more than three mutations in common. According to a recent study mapping genetic mutations in 2,000 tumors, breast cancer can actually be divided into ten subgroups.
但患者并不是唯一的变数。癌症也是多样化的，即使在症状相同的患者中间。在对50名患者的乳腺癌肿瘤进行完全基因组测序后，研究者发现只有10%的肿瘤存在三个以上的相同变异。一份测序了2000个肿瘤基因变异的最新研究表明，乳腺癌实际上应该被分为十种子类。