Almost a dozen such drugs are already on the market, including one called Herceptin.

几乎有10多种这类药物已投放市场, 包括名为Herceptin的药.

Herceptin is characteristic of a lot of these drugs: we only hear about the benefits and rarely about their downside or cost.

赫赛汀是许多这类药物的典型：我们只听到它们的治疗价值而很少听到它们的潜在危害或代价。

And what Herceptin allowed us to do is to precisely target HER2-positive breast cancer, at the time, the scariest form of breast cancer.

赫赛汀使得我们能够精确地锁定HER2阳性乳腺癌细胞，这是当时最为棘手的乳腺癌。

He points to one of the early success stories: herceptin, a breast cancer treatment that halts tumor growth in patients who show overexpression of a gene called HER2.

斯托洛维茨基指出了一个早前的成功案例——那些过度表达癌基因HER2的病人，服用一种治疗乳腺癌的药物——赫赛汀，后能终止肿瘤的生长。