美国食品和药品管理局还没有批准阿瓦斯汀用于眼部治疗，使用它来代替雷珠单抗可能会产生额外的安全风险，尽管这一风险也许很轻微。
The Food and Drug Administration has not approved Avastin for use in the eye, and using it rather than the alternative, Lucentis, might carry an additional, although slight, safety risk.
FDA是基于阿瓦斯丁可以让患者的肿瘤在5个半月内都不增长的研究，批准了阿瓦斯丁的使用许可。
FDA gave its blessing based on a trial showing it offered breast cancer patients an extra 5.5 months of "progression-free survival," time when their tumors weren't growing.
阿瓦斯汀目前被美国食品和药物管理局(FDA)批准用于治疗肺癌和结肠癌，但许多医生将其用于治疗乳癌。
Avastin currently is approved by the U.S. Food and Drug Administration (FDA) for treating lung and colon cancer, but many doctors use it to treat breast cancer.
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