Oncology drug pricing: potential Medicare savings on cancer-directed and supportive care medications through the Mark Cuban cost plus drug model

Abstract Prescription drug costs within oncology remain a challenge for many patients with cancer. The Mark Cuban Cost Plus Drug Company (MCCPDC) launched in 2022, aiming to provide transparently priced medications at reduced costs. In this study, we sought to describe the potential impact of MCCPDC on Medicare Part-D oncology spending related to cancer-directed (n = 7) and supportive care (n = 26) drugs. We extracted data for drug-specific Part-D claims and spending for 2021. Using 90-count purchases from MCCPDC, we found potential Part-D savings of $857.8 million (91% savings) across the 7 cancer-directed drugs and $28.7 million (67% savings) across 21/26 (5/26 did not demonstrate savings) supportive care drugs. Collectively, our findings support that alternative purchasing models like MCCPDC may promote substantial health care savings.


Introduction
2][3] Medicare Part-D provides beneficiaries with prescription coverage, but this program has historically faced legislative barriers to drug price negotiations. 4In 2022, Mark Cuban launched the Mark Cuban Cost Plus Drug Company (MCCPDC), a direct-to-consumer model seeking to provide prescription drugs to patients at reduced prices. 5MCCPDC negotiates directly with drug manufacturers for competitive acquisition prices and offers prescriptions at wholesale cost plus 15% markup, along with transparent pharmacy and shipping fees. 5Prior literature demonstrated the potential advantage of Medicare purchasing at MCCPDC price points across several cancer-directed therapeutics. 6Here, we aim to build upon these findings through cost analysis of cancer-directed and supportive care drugs used within oncology, further illustrating the potential impact of MCCPDC on Medicare Part-D spending.

Materials and methods
Oncology claims were extracted from 2021 (most recently available) Part-D claims data accessible via Centers for Medicare and Medicaid Services.To identify common cancer-directed and supportive care drugs, we ranked medications according to claim volume.Drugs with <1000 claims were excluded.Of the 249 remaining drugs, roughly half were available for purchase through MCCPDC as of June 2023 (123/249, 49%).These were categorized into 3 groups: (1) cancer-directed (n = 8), (2) supportive care (n = 35), and (3) noncancer directed (n = 80).Noncancer-directed drugs were excluded.Ten drugs were also excluded due to poor differentiation of formulation or administration route.The final sample comprised 33 drugs (n = 7 cancer-directed, n = 26 supportive care).
We assessed claims for cancer-directed drugs with the Part-D Spending by Drug dataset, acknowledging that some drugs may have limited nononcology applications.Supportive care medications are prescribed across medical care for a variety of conditions, and thus we restricted savings estimation on this category to cancer-specific claims rather than all of Medicare.We obtained the units/claim from Part-D Spending by Drug data and multiplied by the total cancer-specific claims within the Part-D Provider and Drug data to estimate dosage units specific to oncology.
We performed a cost analysis to estimate Medicare spending if prescriptions were purchased through MCCPDC at supply-specific price points.Estimates included MCCPDC e919 The Oncologist, 2024, Vol. 29, No. 7 shipping and pharmacy fees.Actual spending for 2021 Medicare was compared against cost projection using MCCPDC 30-count (30c) and 90-count (90c) supplies.When MCCPDC offered multiple dosages, a commonly prescribed option was selected to prevent savings overestimation.The National Average Drug Acquisition Cost (NADAC) database was used to account for cost changes in manufacturing between 2021 and 2023, allowing for estimations of Medicare savings at present day, 2023 US dollars.

Discussion
We demonstrated the potential for MCCPDC to provide substantial Medicare cost savings on cancer-directed and supportive care medications within oncology.We identified drugs currently offered by MCCPDC with advantaged price points, underscoring opportunities to facilitate cost-conscious care and help guide patient-clinician conversations about prescription drug costs.This may assist efforts to mitigate financial toxicity in oncology.Prescription purchasing through MCCPDC, specifically at 90-count pricing, showed advantageous pricing across most drugs in our sample (28/33 [85%]).These results may reflect prior successful price negotiation efforts between MCCPDC and manufacturers while also highlighting the feasibility and potential for such negotiations.
7][8] Although our findings may vary slightly from those of Cortese et al, 6 these variations could be attributed to MCCPDC price changes over time, along with differences in methodology such as data sources, dosage choices, and changes within the public market over time.This study has limitations that merit discussion.Findings are restricted solely to Medicare claims on 33 drugs and likely underestimate the broader financial impact of MCCPDC, particularly among the uninsured.
Notably, our results do not communicate direct, out-ofpocket savings to patients but rather an overall reduction in Medicare Part-D spending.Additionally, we used Part-D data to estimate the number of dosage units prescribed specifically within oncology, and this may not perfectly estimate the exact amounts.Projections of potential savings are limited, as future Medicare spending patterns may change with the Inflation Reduction Act.Cost erosion on generic drugs may also occur after loss of exclusivity. 9Moreover, hurdles to the implementation of alternative drug sources on a larger scale may exist.Future efforts should seek to conduct prospective studies assessing the direct impact of MCCPDC on patients' out-of-pocket costs and patient-reported outcomes.

Conclusion
In this study, we demonstrated cost savings on cancer-directed and supportive care drugs used within oncology, further illustrating the potential impact of MCCPDC on Medicare Part-D spending.

Table 2 .
Supportive care drugs-potential Medicare savings with MCCPDC 30C and 90C purchasing.