The failure adds to a series of mixed or negative readouts and leaves in doubt the future of a therapy Sanofi has viewed as a potential blockbuster.

The failure adds to a series of mixed or negative readouts and leaves in doubt the future of a therapy Sanofi has viewed as a potential blockbuster.

Sanofi is ending a Phase 3 trial of its antibody drug in a rare neurological disorder after an independent committee said the study was unlikely to show sufficient efficacy.

Sanofi discontinues Phase 3 riliprubart study for CIDP due to low efficacy. SNY stock ticks up. Read the market & analyst reaction.