Safety and effectiveness of autoinoculation therapy in cutaneous warts: A double - blind, randomized, placebo - controlled study.

Background: In spite of the availability of multiple treatment options, viral warts are known for their persistence and recurrence, causing frustration to patients and treating physicians. Aims: To study the effectiveness and safety of autoinoculation as a treatment modality in cutaneous warts. Methods: A double‑blind, placebo‑controlled study was carried out. In the treatment group, full‑thickness warty tissue was excised, minced and implanted in a small dermal pocket. In the control group, warty tissue was only excised and not implanted, though a dermal pocket was made. Patients were evaluated every four weeks with lesion counts. The procedure was repeated at 4 and 8 weeks. Response was assessed at each visit and at 12 weeks. Results: Forty‑eight patients with cutaneous warts (male: female = 32:16) were randomized into autoinoculation and control groups. The number of warts at baseline was comparable in both groups (P = 0.293). Reduction in the number of warts was significantly more in the autoinoculation group (8.50 ± 13.88) than in the control group (10.04 ± 5.80) from 8 weeks onwards (P = 0.010). Complete resolution occurred only in the autoinoculation group, in 62.5% of cases. Adverse effects were seen in 11 patients, including infection of the donor site (5 cases), keloid formation (3) and hypopigmentation (3). Conclusion: Autoinoculation may be an effective therapeutic modality for cutaneous warts and two sessions may be required for optimum results.