Racial Inequities in Receiving Neoadjuvant Treatment in Patients With Pancreatic Cancer Are Associated With Worse Outcomes in Louisiana.

BACKGROUND

Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer-related deaths. In recent years, the approach to managing this malignancy has evolved toward embracing neoadjuvant treatment (NAT), backed by studies reporting its survival benefit. This study aimed to identify factors that contribute to disparities in NAT utilization and their impact on outcomes in patients with PDAC who underwent resection in Louisiana.

METHODS

Data on diagnosed PDAC cases were obtained from the Louisiana Tumor Registry between 2000 and 2020. We conducted multivariable logistic regression to adjust for potential confounding factors in assessing the covariate relationships with NAT use. Multivariate Cox regression analysis was performed to determine which factors were associated with survival. Chained multiple imputation was performed on covariates with missing data in multivariable regressions.

RESULTS

The study encompassed 2121 patients who underwent resection for PDAC. Upon controlling for potential confounding variables, Black patients were on average 5.7% less likely to receive NAT than their White counterparts (ATE = 5.7, aOR= 0.56, 95% CI = 0.40-0.80, p = 0.001). After adjustment for confounding factors, there was a significant decrease in the risk of overall death for patients who received NAT (aHR = 0.82, 95% CI = 0.71-0.94, p = 0.006). There was no significant interaction between race and NAT for the risk of death.

CONCLUSION

Black patients with PDAC were less likely to receive NAT before resection in Louisiana. Overall survival improved in patients who underwent NAT. These differences were independent of insurance status and poverty zip codes, and future investigations should identify modifiable barriers to access and receipt of NAT in patients with PDAC.