Evaluation of CRS-207 With Pembrolizumab in Previously Treated Malignant Pleural Mesothelioma (MPM)

The population for this study will consist of approximately 35 adults with
histologically-confirmed MPM (epithelial or biphasic) whose disease has progressed after 1-2
prior anti-cancer therapies.

Inclusion Criteria:

1. Histologically-confirmed epithelial or biphasic MPM; biphasic tumors must have a
predominantly (≥50%) epithelial component

2. No more than 2 prior lines of anti-cancer therapy, one of which must have included
pemetrexed and a platinum.

3. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1

4. Adequate organ and marrow function

5. Adequate lung function; forced vital capacity (FVC) and forced expiratory volume in 1
second (FEV1) ≥ 45% of predicted value as measured by spirometry; and oxygen
saturation ≥ 90% on room air

Exclusion Criteria

1. Pleurodesis within 14 days prior to first dose of study drug

2. Receiving tumor necrosis factor (TNF) pathway inhibitors, PI3 kinase inhibitors,
systemic steroid therapy or any other form of immunosuppressive therapy within 7 days
prior to the first dose of study drug

3. Active secondary malignancy

4. Prior anti-cancer monoclonal antibody within 4 weeks prior to first dose of study
drug, or not recovered from adverse effects due to agents administered more than 4
weeks earlier

5. Prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2
weeks prior to first dose of study drug

6. History of (non-infectious) pneumonitis that required steroids or current pneumonitis

7. Prior therapy with an anti-PD-1, anti-PD-L1, anti-PD-L2 agent, or agents targeting
other checkpoint pathways (e.g. CTLA-4)

8. Prior immunotherapy with CRS-207 or any other Listeria-based agent, therapeutic cancer
vaccine, or adoptive T cell immunotherapy

9. Implanted medical devices that pose high risks for colonization and cannot be easily
removed (e.g., artificial heart valves, pacemakers, prosthetic joints, orthopedic
screw(s), metal plate(s)) if infection occurs. Other common devices such as venous
access devices (e.g., Port-a-Cath or Mediport) may be permitted as well as arterial
and venous stents and dental and breast implants that were placed more than 3 months
prior to first dose of study drug.