Phase II Trial of Neoadjuvant and Adjuvant IO102-IO103 and Pembrolizumab KEYTRUDA® in Patients With Resectable Tumors

This is a multicenter, multi-arm trial evaluating anti-tumor activity, safety, and immune infiltration of IO102-IO103 in combination with pembrolizumab KEYTRUDA® as neoadjuvant and post-surgery treatment. Approximately 60 patients with melanoma or SCCHN will be included (approximately 15 for each indication).During the neoadjuvant period, patients in cohort A, cohort B and Cohort C (Arm A) will receive IO102-IO103 and pembrolizumab KEYTRUDA® Q3W. Patients in Cohort C (Arm B) will receive pembrolizumab KEYTRUDA® Patients with melanoma will receive 3 doses of neoadjuvant treatment. Patients with SCCHN will receive 2 or 3 doses of neoadjuvant treatment, at the investigator's discretion. Surgical resection will be performed 1 to 3 weeks after the last dose of neoadjuvant treatment. All patients in cohort A,B and Cohort C (Arm A)will receive post-surgery treatment with IO102-IO103 and pembrolizumab KEYTRUDA® for a total of 15 cycles (up to 45 weeks). Patients in Cohort C (Arm B) will receive post-surgery treatment with pembrolizumab KEYTRUDA® for a total of 15 cycles (up to 45 weeks). Patients with melanoma and patients with SCCHN who do not require SOC RT ± cisplatin will start post-surgery treatment after adequate recovery from surgery (approximately 1 to 2 months; no more than 12 weeks).Patients with SCCHN who require postoperative SOC therapy after surgery will start post-surgery IO102-IO103 and pembrolizumab KEYTRUDA® after adequate recovery from SOC therapy (approximately 1 to 2 months; no more than 12 weeks). Objective response will be based on imaging; pathologic tumor response of the surgical specimens will be assessed at the time of surgery. Safety will be assessed by recording adverse events. The primary endpoint will be the percentage of patients with major pathologic response (MPR) in the resected tumor tissue after neoadjuvant treatment. Secondary endpoints include disease-free survival (DFS) at 2 years after surgery. All patients will have an end-of-treatment visit approximately 4 weeks after their last dose of trial treatment. Follow-up visits will be conducted at 6 and 12 months after the end-of-treatment visit. Following completion of the 12-month follow-up period, long-term follow-up for overall survival (OS) will be conducted every 6 months for at least a further 12 month.