Ignite Creation Date:
2025-12-25 @ 1:25 AM
Ignite Modification Date:
2025-12-31 @ 2:33 PM
Study NCT ID:
NCT04139993
Status:
TERMINATED
Last Update Posted:
2023-10-04
First Post:
2019-10-22
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
RBX7455 Before Surgery for the Treatment of Operable Breast Cancer
Sponsor:
Mayo Clinic
Organization:
Study Overview
Official Title:
A Pilot Trial of Preoperative Oral Microbiota-Based Investigational New Drug, RBX7455 to Target Immune Response in Patients With Operable Stage I-III Breast Cancer
Status:
TERMINATED
Status Verified Date:
2023-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
poor accrual
Has Expanded Access:
No
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
This clinical trial studies the side effects and possible benefits of RBX7455 given before surgery in treating patients with breast cancer that can be removed by surgery (operable). RBX7455 contains live intestinal microbes (active drug), which are obtained from healthy human stool and may restore the normal balance of microorganisms in the intestines through the transplant of live and beneficial microorganisms.
Detailed Description:
PRIMARY OBJECTIVES:
I. To determine the safety and tolerability of microbiota-based formulation RBX7455 (RBX7455) given for at least 2 weeks and not more than 4 weeks prior to surgery.
II. To evaluate intratumoral immunomodulatory effects, including tumor infiltrating lymphocytes ( TILs), CD4, and CD8 T cells, in operable breast cancer patients.
SECONDARY OBJECTIVES:
I. To evaluate systemic immunomodulatory effects of RBX7455 by measuring circulating cytokines including IL-1b, IL-2, IL-4, IL-5, IL-6, IL-7, CXCL8 (IL-8), IL-10, IL-12, IL-13, IL- 17A, IFN-gamma, TNF-alpha, CCL2 (MCP-1), CCL4 (MIP-1beta), granulocyte-colony stimulating factor (G-CSF), and granulocyte macrophage (GM)-CSF before and after treatment with RBX7455.
II. To assess stool microbiome α-diversity, bacterial abundance, and bacterial taxonomy before and after treatment with RBX7455.
III. To assess the durability of bacterial engraftment of RBX7455 in the stool at 8 weeks and 6 months.
OUTLINE:
Prior to standard of care surgery, patients receive RBX7455 orally (PO) 4 days a week for 2-4 weeks in the absence of disease progression or unacceptable toxicity.
After completion of surgery, patients are followed up at 8 weeks and 6 months.
I. To determine the safety and tolerability of microbiota-based formulation RBX7455 (RBX7455) given for at least 2 weeks and not more than 4 weeks prior to surgery.
II. To evaluate intratumoral immunomodulatory effects, including tumor infiltrating lymphocytes ( TILs), CD4, and CD8 T cells, in operable breast cancer patients.
SECONDARY OBJECTIVES:
I. To evaluate systemic immunomodulatory effects of RBX7455 by measuring circulating cytokines including IL-1b, IL-2, IL-4, IL-5, IL-6, IL-7, CXCL8 (IL-8), IL-10, IL-12, IL-13, IL- 17A, IFN-gamma, TNF-alpha, CCL2 (MCP-1), CCL4 (MIP-1beta), granulocyte-colony stimulating factor (G-CSF), and granulocyte macrophage (GM)-CSF before and after treatment with RBX7455.
II. To assess stool microbiome α-diversity, bacterial abundance, and bacterial taxonomy before and after treatment with RBX7455.
III. To assess the durability of bacterial engraftment of RBX7455 in the stool at 8 weeks and 6 months.
OUTLINE:
Prior to standard of care surgery, patients receive RBX7455 orally (PO) 4 days a week for 2-4 weeks in the absence of disease progression or unacceptable toxicity.
After completion of surgery, patients are followed up at 8 weeks and 6 months.
Study Oversight
Has Oversight DMC:
True
Is a FDA Regulated Drug?:
True
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: