MIR604

MIR604 maize produces a Bt toxin against Coleptera with root worm as the target organism.
It has cultivation approval in the USA, Canada and Japan and food/feed approvals mainly in Asian countries and Mexico, but otherwise (as of July 2009) in no South American country. After soy shipments from the US were found to be contaminated with MON88107 and MIR604 maize in Spain and Germany in August 2009, the shipments were rejected and EU buyers voluntarily stopped the import of US soy.

MIR604 maize was produced by Syngenta using Agrobacterium-mediated transformation of an inbred maize line. It also contains pmi as a selectable marker, allowing cells to utilise carbon from mannose media, instead of an antibiotic resistance as selectable marker.
The only scientific paper on possible effects of MIR604 is written by Syngenta scientists who come to the conclusion that there is only a "minimal risk" for non-target organisms.