Group A (pembrolizumab, ATL-DC, poly ICLC) Beginning 14 days prior to scheduled surgery, patients receive pembrolizumab IV over 30 minutes. After surgery, patients receive pembrolizumab IV over 30 minutes on day 1. Cycle repeats every 3 weeks in the absence of disease progression or unacceptable toxicity. Patients also receive ATL-DC ID with poly ICLC IM every 2 weeks for up to 3 doses in the absence of disease progression or unacceptable toxicity.
Group B (placebo, ATL-DC, poly ICLC) Beginning 14 days prior to scheduled surgery, patients receive placebo IV. After surgery, patients receive placebo IV on day 1. Cycle repeats every 3 weeks in the absence of disease progression or unacceptable toxicity. Patients also receive ATL-DC ID with poly ICLC IM every 2 weeks for up to 3 doses in the absence of disease progression or unacceptable toxicity.