This is an sBLA (rather than an ordinary BLA) because Xgeva is already approved for preventing skeletal-related events in patients who have bone mets (#msg-56882220).
The newly sought indication corresponds to the fourth row in the table in #msg-57938233.
An sBLA for preventing bone mets in metastatic breast cancer will be submitted much later, pending data from the phase-3 trial (see fifth row in #msg-57938233).
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