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'Although the information provided by the FDA was thin at the time, the agency told reporters that it had observed 20 cases in which immune-cell cancers known as lymphomas had developed in people treated with CAR T cells. Levine, who is a co-inventor of Kymriah, the first CAR-T-cell therapy to be approved, started jotting down questions. Who were these patients? How many were there? And what other drugs had they received before having CAR-T-cell therapy?'
