Roche recently announced it has obtained US Food and Drug Administration (FDA) approval for the VENTANA ALK (D5F3) CDx Assay as a companion diagnostic to identify ALK-positive non-small cell lung cancer (NSCLC) patients eligible for treatment with the Roche medicine ALECENSA® (alectinib). The VENTANA ALK (D5F3) CDx Assay is the only test FDA-approved as a companion diagnostic for ALECENSA.