A Clinical Trial Testing the Safety of BNT327 (an Investigational Drug) and How Well it Works When Combined With Chemotherapy for People Who Have Not Been Treated Yet for Pancreatic Cancer

Participants will be assigned to treatment arms with modified (m) FOLFIRINOX administration (Treatment Arms 1 and 2) or the treatment arm with nab-paclitaxel + gemcitabine administration (Treatment Arm 3) based on the physician's choice of chemotherapy. Study participants assigned to arms with mFOLFIRINOX administration, will be randomized 1:1 to one of the two arms (Treatment Arms 1 or 2). Once enrollment of Treatment Arms 1 to 3 has been completed, enrollment into the exploratory cohorts (Treatment Arms 4A and 4B) will be opened.

There will be a screening period of up to 28 days, followed by a treatment period lasting up to 2 years. After administration of the last dose of study treatment, participants will be followed-up for safety for up to 90 days or until the participant initiates new anticancer treatment (e.g., systemic, radiotherapy/surgery). Thereafter, survival follow-up will be conducted until the participant dies or withdraws consent for survival status follow-up, loss of contact, or study termination (whichever occurs first).