But it is widely known that certain mutations can run in families, increasing dramatically the risks of certain diseases – for example, breast cancer, sickle-cell anemia, and cystic fibrosis. Unfortunately, many human molecular geneticists have abdicated any responsibility for trying to decrease the overall burden of such diseases.
但是，众所周知，某些变异可以发生于家族中，显著增加罹患某些疾病的风险——比如乳腺癌、镰状细胞贫血和囊细胞纤维症。不幸的是，很多人类分子遗传学家完全没有承担起任何减轻此类疾病总体负担的责任。