About this trial
B7-H3 is expressed at low levels in normal tissues but overexpressed in various tumor tissues. The ubiquitous expression of B7-H3 in tumors of different grades is a key feature for brain gliomas. The immunohistochemistry study showed that B7-H3 is abundantly expressed on both glioma (especially high-grade glioma) cells and tumor-associated endothelial cells. For GBM, the expression of B7-H3 is intensely positive, especially on tumor cells and vascular endothelial cells, which makes B7-H3 a potential immunotherapeutic target.
γδ T cells recognize tumor cells without being restricted by MHC molecules, and thus can be used in allogeneic therapy without the risk of causing graft-versus-host disease.
This study is an open-label, single-arm, dose-escalation and dose-expansion clinical study aimed at evaluating the safety and efficacy of allogeneic B7-H3 CAR γδT in patients with malignant glioma.
Eligibility criteria
Qualifiers
1)Age 18-70 years old (both ends included), both male and female;
2)At least one evaluable lesion, with previous biopsy or histopathological confirmation of high-grade glioma (WHO grade 3-4), and after comprehensive treatment, imaging examination indicates continued progression or recurrence;
3) The pathological tissues removed by surgery can be used for immunohistochemical detection of target proteins (paraffin sections should be within half a year), and the expression of B7-H3 is positive;
4) KPS ≥ 60 points;
Disqualifiers
1)Pregnant and lactating women;
2)Those with organ failure:Heart: Class III and IV;Liver: up to grade C of the Child-Turcotte Liver -Function Classification;Kidney: chronic kidney disease stage 4 or above; renal insufficiency stage III or above;Lungs: symptoms of severe respiratory failure with involvement of other organs;Brain: central nervous system abnormalities or impaired consciousness;
3)patients with combined second tumors;
4)patients with active hepatitis B or C virus, HIV infection, or other untreated active infection;
Trial design
Treatments tested in this trial
- Allogenic B7-H3 CAR-γδT cell(QH104)