In case of THR lever failure FADEC will keep the last effective thrust (cruise, Gdot ...), to allow a normal spoolling up time in case of GO AROUND Airbus has programmed FADEC to reduce engine affected with THR lever malfunction to idle at F1 extension like this final will look like an ENG OUT one with immediate response on engine non affected by failure if needed.
If you have failures on both as OKIVAN got ,fly a NO SLATS NO FLAPS approach
