Yet another classic example of automation dependency and blind addiction to flight director commands. Extract from the official report:
" After about 5 seconds and a 350m flight into the runway, the captain commanded “GO AROUND”, pressed the “TO/GA” button and started following the flight director arrows, further increasing the airplane's pitch, but not noticing that the thrust control unit (Autothrottle) was still OFF and did not put manually the throttle control in the required take-off position for a“Go Around”.