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US-based OncoSec Medical Inc., (OTCMKTS: ONCSQ), majority-owned by China-based Grand Pharmaceutical Group Ltd (HKG: 0512), has revealed disappointing data from a crucial pivotal Phase II trial assessing the firm’s lead DNA drug candidate TAVO-EP (tavokinogene telseplasmid) combined with the programmed death-1 (PD-1) monoclonal antibody Keytruda (pembrolizumab) as a treatment for…