GlaxoSmithKline's Benlysta eyes lupus sales boost after kidney trial win

GlaxoSmithKline's Benlysta has long enjoyed its place as the sole biologic approved to treat lupus, despite other drugmakers' forays into the field. But with competitors sniffing around, GSK is looking to bring Benlysta into another untried indication—and it could help the drug approach the blockbuster threshold.