Not necessarily. DCVax-L was developed two decades ago. Even an approvavle treatment would surely benefit from some updating that accounts for two decades of research.
Two decades ago there were no iphones and their generic competitors.
Should we have not applied lessons learned to have better phones and still use flip phones?
"The next step involves applying lessons learned from the laboratory to improve the vaccine’s efficacy. To that end, the group led by Drs. Liau and Prins launched a trial in 2019 that uses the vaccine in combination with checkpoint inhibitors, based on their laboratory analysis of how tumors in animal models were able to overcome the immunotherapy"