Bluebird Bio Inc

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible.

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible.

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible.

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible.

Two patients in a gene therapy study developed cancer years after treatment. It is not clear whether the therapy was responsible.