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AbbVie will pay I-Mab $180 million for access outside China to lemzoparlimab, an anti-CD47 antibody in development for several types of cancer. Many cancer cells display CD47 on their surfaces to evade detection by white blood cells called macrophages. CD47 has long been a target of interest to cancer-drug developers, but inhibitors can cause anemia—a side effect that I-Mab claims lemzoparlimab avoids. AbbVie paid the Chinese firm another $20 million because of positive Phase I results for the antibody.
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