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Study of HER2 Directed Dendritic Cell (DC1) Vaccine + Weekly Paclitaxel, Trastuzumab & Pertuzumab

A Phase II Study of Human Epidermal Growth Factor Receptor 2 (HER-2) Directed Dendritic Cell (DC1) Vaccine Plus Weekly Paclitaxel, Trastuzumab and Pertuzumab in Patients With HER-2 Positive Breast Cancer

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05325632
Enrollment
53
Registered
2022-04-13
Start date
2021-10-28
Completion date
2027-09-01
Last updated
2026-03-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HER2-positive Breast Cancer

Keywords

Breast Cancer

Brief summary

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.

Interventions

Vaccine will be administered weekly for 6 weeks. Boosters will be given at months 6, 9 and 12.

DRUGTrastuzumab

8mg/kg IV Trastuzumab will be given week 1, followed by 6 mg/kg on subsequent cycles every 3 weeks

DRUGPertuzumab

840 mg IV Pertuzumab will be given week 1, followed by 420 mg on subsequent cycles every 3 weeks.

DRUGPaclitaxel

80 mg/m\^2 IV paclitaxel will be given weekly weeks 7-18

After week 18, participants will undergo standard of care resection surgery.

Sponsors

H. Lee Moffitt Cancer Center and Research Institute
Lead SponsorOTHER
ImmunoRestoration
CollaboratorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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).

Design outcomes

Primary

MeasureTime frameDescription
Lead in Phase: Immunogenicity of each dose levelat 4 weeksImmunogenicity: 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.
Expansion Phase: Pathologic Complete Response Rateat 12 monthsPathologic 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)

Secondary

MeasureTime frameDescription
Expansion Phase: Radiologic tumor response rate after 6 weeksat 6 weeksRadiologic tumor response rate measured by MRI
Expansion Phase: Radiologic tumor response rate at completion of therapyat 12 monthsRadiologic tumor response rate measured by MRI
Expansion Phase: Immunogenicityat 12 monthsImmunogenicity: 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.
Recurrence Free Survivalup to 5 yearsRecurrence free survival defined as the length of time after treatment that patient survives without any signs or symptoms of cancer.

Countries

United States

Contacts

CONTACTNeveen Abdo
Neveen.Abdo@moffitt.org813-745-4412
PRINCIPAL_INVESTIGATORHyo (Heather) Han, MD

Moffitt Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026