How do you approach extensive recurrent genital warts that have failed liquid nitrogen, imiquimod, 5 fluorouracil and electrodessication?

I have used 0.2 ml of Candida IL with success for recalcitrant scrotal warts (injected in 2-3 lesions). I used this study below as a reference. My patient cleared in 3 sessions (4-6 weeks apart), the study below states max 5 sessions.

Nofal et al., PMID 31923442