Ignite Creation Date:
2025-12-24 @ 10:02 PM
Ignite Modification Date:
2025-12-25 @ 7:39 PM
Study NCT ID:
NCT04991532
Status:
UNKNOWN
Last Update Posted:
2021-08-05
First Post:
2021-08-03
Is NOT Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Dasatinib Down-regulates the Expression of PD-1 and Enhances Killing pH + Leukemia Stem Cells
Sponsor:
Nanfang Hospital, Southern Medical University
Organization:
Study Overview
Official Title:
Research on the Mechanism of Dasatinib Down-regulates the Expression of PD-1 in CMV-activated NKG2C+NK Cells and Enhances Killing pH + Leukemia Stem Cells.
Status:
UNKNOWN
Status Verified Date:
2021-08
Last Known Status:
RECRUITING
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Research on the mechanism of dasatinib down-regulates the expression of PD-1 in CMV-activated NKG2C+NK cells and enhances killing pH + leukemia stem cells.
Detailed Description:
Some patients with CML can withdraw from TKIs after treatment, and the mechanism might be related to the effect of memory NK cells on anti-Ph+ leukemic stem cells (LSCs). Dasatinib affects immune through several pathways including the expression of PD1 in immune cells. Our previous work showed increased NKG2C+ NK cells were found in cases with CMV-DNA+ who suffered Ph+ leukemia and received Dasatinib, and these memory NK cells have anti-LSCs activity. We hypothesize that: CMV infection activates NKG2C+ memory NK cells proliferation; Dasatinib down-regulates the expression of PD1 in PD1+NKG2C+ NK cell subsets and then enhances anti-LSCs activity of these cells. In this study, the effect of Dasatinib on CMV-activated NKG2C+ cell subsets and its mechanism will be studies. Besides, the different NKG2C+ cell subsets on LSCs will be compared. This study might be helpful to clarify the mechanism of TKI withdrawal and to offer foundation for CMV and Ph+ ALL treatment strategies
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: