A Vaccine (PDS0101) and Chemoradiation for the Treatment of Stage IB3-IVA Cervical Cancer, the IMMUNOCERV Trial

PRIMARY OBJECTIVE:

I. Evaluate the safety and toxicity profile of delivering the immune nanoparticle liposomal HPV-16 E6/E7 multipeptide vaccine PDS0101 (PDS0101) with standard-of-care chemoradiation (chemoRT) in patients with locally advanced cervical cancer.

SECONDARY OBJECTIVES:

I. Rate of complete metabolic response on day 170 (+/- 14 days) positron emission tomography computed tomography (PET CT).

II. Rate of \>= 90% gross tumor volume reduction day 35 magnetic resonance imaging (MRI) (+/- 5 days).

III. Report rates of local control (LC), progression-free survival (PFS), and overall survival (OS) at 12 and 18 months following chemoRT completion.

IV. Long-term safety: rate of grade \>= 3 chronic toxicity (from day 81 to completion of trial).

EXPLORATORY HPV-SPECIFIC IMMUNE RESPONSE OBJECTIVES:

I. Enzyme-linked immunosorbent spot (ELISpot) assays on interferon-gamma and granzyme B levels in E6/7-specific T cells isolated from peripheral blood mononuclear cells (PBMCs).

II. Compare intratumoral T-cell receptor (TCR) clonality at baseline and end of treatment by TCR sequencing.

III. Measure CD4+ and CD8+ tumor-infiltrating lymphocytes (TILs) from cervical brush samples by using markers of T-cell exhaustion (PD1, CTLA4) and T cell-activation (granzyme B, CD69+).

IV. Assess the intestinal and cervical microbiome by analyzing rectal and cervical swab samples with 16s ribosomal ribonucleic acid (rRNA) sequencing.

V. Additional assays such as circulating tumor cells, circulating cell-free tumor deoxyribonucleic acid (DNA) (ccfDNA), and other assays will be performed at the discretion of the principal investigator.

OUTLINE:

Patients undergo radiation therapy over 1 hour 5 days per week (Monday-Friday) for 5-7 weeks and receive cisplatin intravenously (IV) over 4 hours once per week (QW) during the 5 weeks of radiation therapy in the absence of disease progression and unacceptable toxicity. Patients also receive PDS0101 subcutaneously (SC) on days -10, 7, 28, 49, and 170 in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up at 30 days, 1, 4, 6, 12, and 18 weeks, and 18 months.