Study on Gene Evolution in Glioma Under Stress Therapy

Genetic Change Clinical Trial

Official title: Study on Gene Evolution and Anti-VEGF Treatment Response of Different Subtypes of Glioma Based on ctDNA

Status Not yet recruiting

Clinical Trial Summary

Little is known about the evolution of genetic and epigenetic changes that occur in the progression of glioma. We inferred the evolution trajectories of matched pairs of primary tumors and progression tumor in situ fluid (TISF) based on deep whole-genome-sequencing data (ctDNA). A monocentric, Gene grouping controlled trial design was used to select patients. and to compare gene evolution of different subtypes of glioma under therapy. To predict the molecular reaction of bevacizumab treatment, clarify the mechanism of drug resistance of bevacizumab treatment.

Clinical Trial Description

Patient: Adult glioma, pathological diagnosis combined with molecular diagnosis (i.e. IDH- mutant glioma, IDH- mutant glioma with 1p/19q- co-deletion, glioblastoma). The patients were divided into three groups: group A (IDH mutant glioma), group B (IDH mutant with 1p/19q co-deletion oligodendroglioma ) and group C (IDH wild glioblastoma). From the first day after surgery, the ctDNA was extracted with TISF before concurrent chemoradiotherapy as the baseline, and the ctDNA was detected again after concurrent chemoradiotherapy. For the third time, ctDNA was detected in temozolomide intensive chemotherapy. ctDNA was detected for the fourth time when the image showed tumor progression. After the progress, temozolomide combined with bevacizumab was used for chemotherapy. ctDNA was detected 6 weeks after the application of bevacizumab, and ctDNA was re-measured every 6 weeks during the treatment of bevacizumab. At the same time, imaging examination was performed to determine the tumor progress. Check and record adverse events and drug use in detail, and evaluate the compliance of subjects; After TISF tissue extraction, the retained blood samples were sent to simcere Company and Beijing Genetron Health Technology Co. Ltd for ctDNA quantification and detection. To study the differences of gene evolution of different subtypes of glioma under pressure therapy, to clarify the differences of molecular responses of different subtypes of glioma to bevacizumab, and to evaluate the therapeutic effect and safety. ;

Related Conditions & MeSH terms

• Genetic Change
• Glioma

• NCT number: NCT05512325
• Study type: Observational [Patient Registry]
• Source: Henan Provincial People's Hospital
• Contact: Xingyao Bu, Ph.D
• Phone: 18538297990
• Email: xingyaob@zzu.edu.cn
• Status: Not yet recruiting
• Start date: December 17, 2022
• Completion date: December 31, 2026