Real-World Cost of Care for Commercially Insured versus Medicare Patients with Metastatic Pancreatic Cancer Who Received Guideline-Recommended Therapies.

Background: Much of the literature about the costs of metastatic pancreatic cancer is focused on the Medicare population, but the cost in the commercially insured population is not well-documented. Differences in treatment patterns between commercially insured and Medicare patients with metastatic pancreatic cancer can provide insights into healthcare utilization and the total cost of care.

Objective: To compare the total cost of care for commercially insured versus Medicare patients with metastatic pancreatic cancer who are receiving National Comprehensive Cancer Network (NCCN)-recommended treatment regimens.

Methods: We identified 3904 patients (mean age at diagnosis, 56 years) with metastatic pancreatic cancer using International Classification of Diseases, Ninth/Tenth Revision diagnosis codes in claims data in the 2014-2018 MarketScan commercial database and 28,063 patients (mean age at diagnosis, 73 years) with metastatic pancreatic cancer in the 2014-2017 Medicare Parts A, B, and D 100% research identifiable data files. We calculated the total cost of care and resource utilization by NCCN-recommended (category 1) treatment regimen, including 5-fluorouracil, leucovorin, oxaliplatin, and irinotecan (FOLFIRINOX); gemcitabine plus nab-paclitaxel; gemcitabine monotherapy; and liposomal irinotecan. All patients had ≥2 claims with a pancreatic cancer diagnosis more than 30 days apart and ≥1 subsequent claims with a secondary malignancy diagnosis for metastatic disease.

Results: The mean total cost of care was 186% higher in the commercially insured cohort than in the Medicare cohort. Excluding gemcitabine monotherapy, the total cost of care for patients with metastatic pancreatic cancer was similar between the regimens used in each cohort, ranging from $95,426 to $116,325 in the commercial insurance group and from $39,777 to $40,390 in the Medicare group. The components of hospital-based inpatient and outpatient costs varied between similar regimens in both cohorts. The inpatient admission patterns of patients' regimens were consistent across the 2 cohorts, with patients receiving gemcitabine monotherapy or liposomal irinotecan having the lowest overall number of admissions in each cohort.

Conclusions: The treatment patterns varied across the regimens but were largely consistent between the commercially insured and the Medicare patients who received the same regimen for metastatic pancreatic cancer; the ratio of total cost of care was 3:1 (commercially insured to Medicare). The total costs of care were similar across the regimens in each cohort, but the components of the total cost varied. These results can inform clinical guidelines and pathways for pancreatic cancer therapy as new evidence and treatment options emerge, and in the context of increasing value-based care models.