CAN1012 in Pre-Malignant DCIS and LCIS

This is not a dose finding study, and therefore patients may be enrolled to any of the four arms in any order, based on clinical considerations (e.g. OR scheduling). No arm, per specific disease type, may expand beyond the first 3 patients, until 30-day post-op safety evaluation has been completed. Study analysis is planned after a single dose of intralesional CAN1012. The primary objective of this trial is to examine the safety of CAN1012 delivered by intralesional injection ahead of planned surgical resection. The study will be stopped early for patient safety according to stopping rules below. The sample size for the study is not based on any statistical assumptions. The number of subjects is based on the number of cohorts tested and the size of each cohort. The Safety Analysis Set will consist of all subjects who receive at least one dose of study treatment. The Safety Analysis Set will be used for safety analyses. The Intent-to-treat (ITT) Analysis Set will consist of all subjects who receive at least one dose of study treatment and have at least one post-Baseline assessment of tumor response. The disposition of subjects will be summarized by presenting the number of subjects enrolled, the number and percentage of subjects in each analysis population, the number for whom the study drug was discontinued with the reasons for discontinuation, and the number of subjects who discontinued participation in the study with the reason(s) for withdrawal.