A proportion of the test group have seen lasting improvement, so not a cure all but B cell depletion has some promise. How large a proportion are of the phenotype which responds is still in the ongoing research newscientist.com/article/dn...
Phase 2 trials began in May 2015 clinicaltrials.gov/ct2/show... with an end date of November 2016
Maintenance treatment journals.plos.org/plosone/a...