A First in Human Dose Escalation of Dendritic Cell Vaccine (DCV)

NCT ID: NCT05809752

Last Updated: 2026-01-08

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE1
• Total Enrollment: 18 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-08-22
• Study Completion Date: 2026-03-31

Brief Summary

The purpose of this study is to learn about the effects of the study treatment, Dendritic Cell Vaccine (DCV), to find the highest dose of the study treatment that can be given safely to Breast Cancer patients with Leptomeningeal Disease

Conditions

Leptomeningeal Disease; Triple Negative Breast Cancer; HER2-positive Breast Cancer

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Dendritic Cell (DC) Vaccine dose escalation

HER2/3 peptide-pulsed DC1 will be administered intrathecally (IT) weekly for 6 doses /cycle for a maximum of two cycles, and then re-staged. If there are sufficient DC1s this may be continued weekly thereafter. There are 1 safety cohort (1 million DCV cells) and 3 escalating doses (2 million, 10 million and 50 million DCV cells) possible.

Group Type: EXPERIMENTAL

Dendritic Cell Vaccine

Intervention Type: BIOLOGICAL

Intrathecal (IT) dendritic cell vaccine (DCV) will be administered once every week. As per standard procedures of IT chemotherapy or antibody administration it is administered over 5 -10 minutes or at 1 ml/minute while monitoring the patient under sterile conditions. In general, to assure delivery of the DCVs into the ventricular space and compensate for "dead space" in the Ommaya, the delivery of IT DCV cells is followed by the administration of 2.5 mls of saline. In general there is a maximum volume of 10 mls of DCVs.

Interventions

Dendritic Cell Vaccine

Intrathecal (IT) dendritic cell vaccine (DCV) will be administered once every week. As per standard procedures of IT chemotherapy or antibody administration it is administered over 5 -10 minutes or at 1 ml/minute while monitoring the patient under sterile conditions. In general, to assure delivery of the DCVs into the ventricular space and compensate for "dead space" in the Ommaya, the delivery of IT DCV cells is followed by the administration of 2.5 mls of saline. In general there is a maximum volume of 10 mls of DCVs.

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

• Histologically or cytologically confirmed diagnosis of TNBC or HER2+BC per ASCO/CAP guidelines . A tumor can be considered a TNBC if the ER or PR is <10%.
• Trial participants must have a diagnosis of LMD. They must have the presence of malignant cells in the CSF (CSF+; note now cytology is considered diagnostic of LMD if the cytology is read as positive or suspicious; OR characteristic radiographic abnormalities (see below) of LMD). Signs and symptoms of LMD in and of themselves are not sufficient for inclusion.
• Patients must have an Eastern Cooperative Oncology Group performance scale of ≤ 3.
• Coincident Brain or Spinal cord metastases are allowed if these are stable and do not require local therapy at the time of enrollment. Individuals with previously treated stable Brain metastases are eligible to participate.
• Stereotactic Radiosurgery (SRS) and/or prior radiotherapy is permitted > 2 weeks prior to initial Dendritic Cell (DC) vaccine dose. A follow up brain MRI should be obtained prior to DC vaccine to determine stability of the lesions. An interval of at least 4 weeks after the end of whole brain radiation or for any surgical resection of brain lesions is permitted.
• Life expectancy of ≥ 8 weeks.
• Demonstrate adequate organ function as defined in protocol. All screening labs should be performed with 14 days of treatment initiation.
• Provision of signed and dated informed consent form.
• Corticosteroids at doses equivalent to 8 mg dexamethasone daily for symptom control are acceptable. This should be minimized wherever possible.

Exclusion Criteria

• Patients with systemic disease are eligible and will be managed as detailed in Section 6.3.1.
• Pregnancy test: negative serum or urine pregnancy test at screening for women of childbearing potential. Must be repeated once-monthly during treatment. Contraception: Highly effective contraception for both male and female subjects throughout the study and for at least 90 days after last treatment administration, if the risk of conception exists.
• The patient has an Ommaya reservoir or equivalent device which allows routine access to CSF and administration of DC1s.

• Receiving other treatments specifically administered to treat LMD within the last 2 weeks or 5 half-lives of the agent, whichever is less. However, all other treatments to control systemic disease or bulk CNS disease will be eligible, provided the therapy is not a phase I agent, an agent which significantly and unequivocally penetrates the CSF (e.g., high-dose methotrexate, thiotepa, high-dose ara-C) per PI discretion.
• The use of any immunotherapy within the last four weeks.
• Patients with a ventriculoperitoneal or ventriculoatrial shunt must have an on/off device in their shunt systems to be eligible for the study. Patients must be able to tolerate shunt closure for ~4 hours without development of clinical signs of increased intracranial pressure. Patients unable to tolerate shunt closure for ~4 hours will not be eligible for the study.
• Unable or unwilling to have a contrast-enhanced brain MRI.
• Known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin,squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy.
• Has an active infection requiring systemic therapy which in the opinion of the investigator will increase the risk to the patient.
• Had major surgical procedure, or significant traumatic injury within two weeks. Ommaya placement is allowed.
• Has a history of current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator.
• Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial.
• Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 90 days after the last dose of trial treatment.
• Has a known history of Human Immunodeficiency Virus (HIV) (HIV 1, 2 antibodies). Testing is not mandatory.
• Has known active or chronic hepatitis B (HBV) or hepatitis C virus (HCV). Testing is not mandatory.
• ORGAN TRANSPLANTATION: Prior organ transplantation including allogenic stem-cell transplantation.
• Other severe acute or chronic medical conditions or psychiatric conditions including recent (within the past year) or active suicidal ideation or behavior; or laboratory abnormalities that may increase the risk associated with study participation or study treatment administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the patient inappropriate for entry into this study.
• Has received a blood transfusion in the two weeks prior to leukapheresis.
• Has received a live vaccine within 30 days prior to the first dose of study drug. Examples of live vaccines include, but are not limited to, the following: measles, mumps, rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacillus Calmette-Guérin (BCG), and typhoid vaccine. Seasonal influenza vaccines for injection are generally killed virus vaccines and are allowed; however, intranasal influenza vaccines (e.g., FluMist®) are live attenuated vaccines and are not allowed. Current COVID vaccines are not live vaccines.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

United States Department of Defense

FED

Sponsor Role: collaborator

H. Lee Moffitt Cancer Center and Research Institute

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Peter A Forsyth, MD

Role: PRINCIPAL_INVESTIGATOR

Moffitt Cancer Center

Locations

Moffitt Cancer Center

Tampa, Florida, United States

Site Status: RECRUITING

Roswell Park Comprehensive Cancer Center

Buffalo, New York, United States

Site Status: WITHDRAWN

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Site Status: WITHDRAWN

Countries

United States

Facility Contacts

Cecily Piteo

Role: primary

Cecily.Piteo@moffitt.org

813-745-6963

Related Links

https://www.moffitt.org/clinical-trials-and-studies/clinical-trial-21262/

Moffitt Cancer Center Clinical Trials website

Other Identifiers

MCC-21262

Identifier Type: -

Identifier Source: org_study_id