A Study of ELI-002 7P in Subjects With KRAS/NRAS Mutated Solid Tumors

The study consists of 3 phases: Phase 1A, Phase 1B, and Phase 2. In Phase 1A, seven Amph

modified KRAS and NRAS peptides, G12D, G12R, G12V, G12A, G12C, G12S, G13D (Amph-Peptides

7P) will be evaluated in combination with recommended Phase 2 dose of Amph-CpG-7909

(10.0mg). This Amph-CpG-7909 dose will be evaluated with two Amph-Peptides 7P dose levels

(1.4mg and 4.9mg) in 6 subjects per dose level. Following enrollment of these 12

subjects, the independent data monitoring committee (IDMC) will decide if another 6

subjects should be enrolled or if the dose can be determined for Phase 1B and Phase 2

portions of the study to be opened. If another 6 subjects are enrolled to Phase 1A, the

IDMC will meet again to decide upon the dose for Phase 1B and Phase 2 prior to opening

these portions of the study.

In Phase 1B, one dose expansion cohort of up to 17 colorectal cancer [CRC] subjects may

be added to evaluate for preliminary evidence of biomarker response, including

circulating tumor deoxyribonucleic acid (ctDNA) and/or serum tumor biomarker (such as

CA19-9 and CEA) reduction and clearance in KRAS and NRAS.

In Phase 2, an additional 135 PDAC subjects will be randomized 2:1 (ELI-002 7P versus

observation) to further evaluate antitumor activity. Subjects randomized to ELI-002 7P

will receive subcutaneous (SC) injections of ELI-002 7P during Immunization and Booster

Periods. Subjects randomized to observation will have the same safety and efficacy

evaluations and will follow the same assessment schedule as subjects randomized to

ELI-002 7P but will not receive study treatment. Subjects randomized to observation will

be able to elect to cross-over to ELI-002 7P treatment in the event of confirmed disease

progression.