The gist of the amendment is that INO’s partner, ApolloBio Corporation, is paying more in up-front cash ($23M vs $15M) but is not buying any INO stock. The Feb 2017 PR for the original agreement is in #msg-128651043.
VGX-3100 is a therapeutic vaccine for HPV-related cancers and precancerous conditions, although the above license is for monotherapy treatment of precancerous conditions only.
INO is collaborating with AZN on combination treatment with Imfinzi for second-line H&N cancer (#msg-131236136), and INO has its own phase-3 trial underway in cervical pre-cancer (#msg-132005083).