The rheumatoid arthritis drug leflunomide (Arava; sanofi-aventis) has received a boxed warning about the risk for severe liver injury, the US Food and Drug Administration (FDA) announced today.

美国FDA今日宣布，治疗类风湿关节炎的药物来氟米特被给予黑框警告，因为它具有导致重度肝损伤的风险。

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These are often very expensive, injectable medicines used for hard-to-treat diseases like cancer, severe anemia and rheumatoid arthritis.

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Roche is developing a test to predict which rheumatoid arthritis patients will respond to standard medications and which have more severe forms that require expensive new drugs.

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