The biopharma company is proving its recently approved cancer therapy is marketable.After watching its stock fall for weeks on worries of disappointing results, Iovance Biotherapeutics (IOVA 18.64%) has vindicated itself. Shares of the young biopharma company are up 24.2% as of 11:20 a.m. ET today in response to an impressive second-quarter report. This bullish jolt could also mark the beginning of a more prolonged move higher.Iovance's Amtagvi is off to a solid startIn simplest terms, caregivers are embrac ...