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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Li, Yuegang Du, Yuwei Xue, Chi Wu, Pei Du, Nan Zhu, Guolian Xu, Huimian Zhu, Zhi |
| Abstract | Background Immune checkpoint inhibitors have shown promise in microsatellite instability-high/mismatch repair deficient (MSI-H/dMMR) advanced colorectal cancer (CRC) immunotherapy, and many clinical trials have been conducted. Objective To evaluate the efficacy and safety of PD-1/PD-L1 inhibitors in advanced CRC. Method PubMed, Web of Science, Embase, and The Cochrane Library were searched for relevant studies up to September 2021. A retrospective cross-sectional data analysis was performed and Stata 16 software was used for analyses. Results Sixteen studies including 1503 patients were analyzed. The objective response rate (ORR) of anti-PD-1/PD-L1 was 23% (95% CI 0.14, 0.31); the overall 1-year survival rate (OSR) was 57% (95% CI 0.42, 0.73). The ORR of MSI-H/dMMR advanced CRC was 37% (95% CI 0.25, 0.48) and that of microsatellite stable/mismatch repair proficient (MSS/pMMR) disease was 11% (95% CI 0.06, 0.16). The ORR was 42% in the BRAF mutant subgroup and 19% in the RAS mutant group. The ORR was 14% in the PD-L1 ( +) subgroup and 32% in the PD-L1(-) subgroup. The rate of adverse effects was 85% (95% CI 0.80, 0.91). Conclusion Anti-PD-1/PD-L1 therapy in MSI-H/dMMR advanced CRC was associated with improved survival. Anti PD-1/PD-L1 combined with antiangiogenic drugs, targeted agents, or chemotherapy might be effective in MSS mCRC. Immunotherapy was effective for the BRAF mutant and KRAS/NRAS(RAS) mutant CRC. Low expression of PD-L1 was a potential predictive marker for positive response and outcome. The high incidence of adverse events at 85% was worthy of further investigation. Further analysis with a higher number of high-quality studies is needed to verify the conclusions. |
| Related Links | https://bmcgastroenterol.biomedcentral.com/counter/pdf/10.1186/s12876-022-02511-7.pdf |
| Ending Page | 13 |
| Page Count | 13 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| DOI | 10.1186/s12876-022-02511-7 |
| Journal | BMC Gastroenterology |
| Issue Number | 1 |
| Volume Number | 22 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2022-10-10 |
| Access Restriction | Open |
| Subject Keyword | Gastroenterology Internal Medicine Hepatology PD-1 PD-L1 Immunotherapy Colorectal cancer Meta-analysis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Gastroenterology |
| Journal Impact Factor | 2.5/2023 |
| 5-Year Journal Impact Factor | 2.7/2023 |
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