Power distribution of collimated coherent radiation at 1061 nm over the corneal thickness.

BACKGROUND

Pancreatic ductal adenocarcinoma (PDAC) is one of the most malignant tumors, with approximately 80% of PDAC patients having locally advanced or metastatic disease at diagnosis. The liver is a predominant site of metastasis and is linked to a particularly poor prognosis. Here, we explored camrelizumab (an anti-programmed cell death-1 antibody) combined with albumin-bound paclitaxel and gemcitabine (AG) in patients with PDAC and liver metastases (PCLM).

METHODS

In this pilot trial (ChiCTR2000038587), patients received camrelizumab (200 mg on day 1) plus gemcitabine (1000 mg/m2 on days 1 and 8) and albumin-bound paclitaxel (125 mg/m2 on days 1 and 8) every 21-day cycle until disease progression, intolerable toxicity, or death. The primary endpoint was overall survival (OS). Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), disease control rate (DCR), and safety. Exploratory analyses evaluated potential biomarkers associated with survival.

RESULTS

From October 2018 to October 2023, 17 patients were enrolled. The median OS was 14.0 months (95% confidence interval [CI], 10.0-24.0) and the median PFS was 6.4 months (95% CI, 5.2-10.2). Five patients achieved an objective response (29.4%), with a DCR of 64.7%. Fewer liver metastasis lesions, higher white blood cell-to-lymphocyte ratio, and lower neutrophil-to-lymphocyte ratio were associated with improved PFS and OS (P<0.05). Grade 3 treatment-related adverse events (TRAEs) included platelet count decreased (2 [11.8%]) and neutrophil count decreased (1 [5.9%]). No grade 4 or 5 TRAEs occurred.

CONCLUSION

Camrelizumab combined with AG demonstrates promising antitumor activity in patients with PCLM, with an acceptable safety profile.