Originally published July 29.

NEW YORK (GenomeWeb) – AstraZeneca is exploring the use of liquid biopsy-based companion tests to pick out best responders for its drugs for lung cancer, where acquiring biopsy tissue is particularly challenging for advanced patients.

The drugmaker this week announced two deals, one with Qiagen and another with Roche, to advance liquid biopsy-based companion diagnostics for its marketed non-small cell lung cancer drug Iressa (gefitinib) and the investigational NSCLC agent AZD9291, respectively.

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