CELL INTELLIGENCE · 肿瘤细胞治疗研究

Inclusion Criteria:

* Participants must have histologically confirmed clinical stage I- III, HER2+ (per ASCO/CAP criteria) invasive carcinoma of the breast. Primary tumor should measure at least 1 cm by clinical exam or radiologic tests
* Candidate for neoadjuvant chemotherapy with Paclitaxel, Trastuzumab, Pertuzumab regimen followed by standard of care local therapy as determined by the treating physician
* Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
* Participants must have normal organ and marrow function as defined per protocol.
* Cardiac ejection fraction within institutional normal limits by either Multigated Acquisition Scan (MUGA) or Echocardiogram at baseline.
* Women of child-bearing potential and their male partners must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately. Sexually active male participants should use a barrier method or exercise abstinence during chemotherapy administration until surgery.
* Ability to understand and the willingness to sign a written informed consent document.

Exclusion Criteria:

* Participants with inflammatory breast cancer, widespread locally advanced unresectable disease involving the chest wall/nodal basins in which a curative surgical resection cannot be performed, or those in whom de novo metastatic disease is suspected or confirmed.
* Patients may not be receiving any other investigational agents for the treatment of their breast cancer.
* History of allergic reactions attributed to compounds of similar chemical or biologic composition to the study vaccine components and any of the chemotherapy drugs (paclitaxel, trastuzumab, pertuzumab).
* Participants who are unwilling or unable to undergo an apheresis for production of their vaccine.
* Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
* Pregnant women and women who are breastfeeding.
* Participants with known congenital or acquired immune deficiency (including those patients who require systemic immunosuppressant drugs for autoimmune disease or organ transplant).

主要终点：Lead in Phase: Immunogenicity of each dose level · Immunogenicity: will be characterized by quantifying CD4TH1 response via ELISPot. ELISPot is an enzyme-linked immunospot assay. It is a highly sensitive immunoassay that measures the frequency of cytokine-secreting cells at the single-cell level. · at 4 weeks；Expansion Phase: Pathologic Complete Response Rate · Pathologic complete response rate of participants treated in the Expansion Phase. Clinical efficacy will be defined by the pathologic complete response (pCR) rate, the percentage of patients who achieve pCR based on surgical pathology assessment. Pathologic Complete Response defined as no residual invasive disease in the breast and nodes (ypT0/is N0) at definitive surgery after completion of protocol therapy. The pathologic response to treatment will be assessed by the pathologist. The "Residual Cancer Burden" (RCB) for each patient as described in the online calculator also will be evaluated per the pathologist. (http://www3.mdanderson.org/app/medcalc/index.cfm?pagename=jsconvert3) · at 12 months
次要终点：Expansion Phase: Radiologic tumor response rate after 6 weeks；Expansion Phase: Radiologic tumor response rate at completion of therapy；Expansion Phase: Immunogenicity；Recurrence Free Survival

• Lead In - Dose level 1 · EXPERIMENTAL · Six participants will be treated at dose level 1: DC vaccine given at the dose of 50 million once per week for 6 weeks
• Lead In: Dose Level 2 · EXPERIMENTAL · Six participants will be treated at dose level 2: DC vaccine given at the dose of 100 million once per week for 6 weeks
• Expansion -Estrogen Receptor (ER) positive · EXPERIMENTAL · An additional 24 participants will be enrolled at dose level 2 if determined to be safe in lead in phase to have a total of 28 evaluable participants for pathologic response assessment (including 6 pts from the lead in phase).
• Expansion -Estrogen Receptor (ER) negative · EXPERIMENTAL · An additional 23 participants will be enrolled at dose level 2 if determined to be safe in lead in phase to have a total of 28 evaluable participants for pathologic response assessment (including 6 pts from the lead in phase).

The purpose of the study is to find out if an investigational drug called Dendritic Cell (DC1) vaccine added to standard neoadjuvant (given before main treatment) therapy can help people with HER2 (human epidermal growth factor receptor 2) positive breast cancer.