Table 1. Targets of CAR-T cell therapy in solid tumors with clinical evidence of efficacy.
Target | Disease | Response rate | Survival | Comments | Ref. |
CAR-T, chimeric antigen receptor-T; GPC3, glypican-3; MSLN, mesothelin; PSMA, prostate-specific membrane antigen; TAG-72, tumor-associated glycoprotein-72; HER2, human epidermal growth factor receptor 2; EGFR, epidermal growth factor receptor; GC, gastrointestinal cancers; HCC, hepatocellular carcinoma; PC, pancreatic carcinoma; OC, ovarian carcinoma; mCRPC, metastatic castration-resistant prostate cancer; CRC, metastatic colorectal cancer; NSCLC, non-small cell lung cancer; MPM, malignant pleural mesothelioma; BC, breast cancer; GBM, glioblastoma; CR, complete response; ORR, objective response rate; DCR, disease control rate; PR, partial response; SD, stable disease; PD, progressive disease; OS, overall survival; PFS, progression-free survival; CRS, cytokine release syndrome; 95% CI, 95% confidence interval. | |||||
GD2 | High-risk neuroblastoma | CR: 27% of patients with active disease | Overall response: 63% Median OS: 31 months |
Among patients who received the recommended dose, the 3-year OS and event-free survival were 60% and 36%, respectively. | (3) |
Claudin-18.2 | GC | ORR: 48.6% DCR: 73.0% |
Median PFS: 3.7 months OS: 81% at 6 months |
Eighty-three percent of patients showed tumor regression; 11% showed reversible grade 3/4 gastrointestinal toxicities | (4) |
GPC3 or MSLN | HCC or PC or OC | CR: 1/6 PR: 1/6 SD: 2/6 |
Not available | One PC patient (1/6, 16.7%) achieved CR; one HCC patient (1/6, 16.7%) achieved PR; and 2 HCC (2/6, 33.3%) achieved SD | (14) |
PSMA | mCRPC | Five of 13 patients achieved a PSMA reduction of ≥30% | Median PFS: 4.4 months Median OS: 15.9 months | Five of 13 patients achieved a PSA reduction of ≥30%, 5 out of 13 patients developed high-grade CRS | (29) |
TAG-72 | CRC | Seven of 8 evaluable patients in trial C-9701 and 2 evaluable patients in trial C-9702 showed an increase in TAG-72 in post-infusion sera following heat treatment |
Not available | Detectable, but mostly short-term (≤14 weeks), persistence of CART72 cells was observed in blood; one patient had CART72 cells detectable at 48 weeks | (30) |
HER2 | Sarcomas | SD: 4/17 | Median OS: 13 months | Of 17 evaluable patients, 4 had SD for 12−14 months. Three of these patients had their tumor removed, with one showing ≥90% necrosis. | (31) |
4-1BB and PD1 | CRC or OC or NSCLC | DCR: 65.6% | Not available | DuoBody-PD-L1×4-1BB (GEN1046) is a first-in-class bispecific immunotherapy with a manageable safety profile and encouraging preclinical and early clinical activity | (32) |
Mesothelin | MPM or BC | PR: 2/16 SD: 9/16 PD: 5/16 |
Median OS: 23 months One-year OS: 83% |
/ | (33) |
IL-13Rα2 | GBM | CR: 1/1 | Not available | This first-in-human experience establishes a foundation for future adoptive therapy studies using off-the-shelf, zinc-finger modified, and/or glucocorticoid resistant CAR-T cells. | (34) |
EGFR | NSCLC | PR: 1/9 SD: 6/9 PD: 2/9 |
Median OS: 15.63 months PFS: 7.13 months |
PFS of these nine patients was 7.13 (95% CI: 2.71−17.10 ) months, while the median OS was 15.63 (95% CI: 8.82−22.03) months. | (35) |