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Stemline Therapeutics · Elacestrant Hydrochloride

Orserdu: patented from NIH-funded research, then Medicare paid $259M for it in 2024

Duke University reported 3 patents on this drug to NIH as inventions made with NIH grant money. Stemline Therapeutics lists them with the FDA as protecting Orserdu.
Patent reported to NIH as grant-funded

Medicare paid, 2024

$259M

before rebates

Medicare, 2020–2024

$386M

$98K per patient in 2024

Medicaid paid, 2024

$35M

before rebates

NIH grants behind the patents

$10M

whole-grant totals, not the drug's cost

The public record, link by link

  1. 1 · Public money

    2 NIH grants to Duke University, $10M in all.
  2. 2 · Patent

    10071066, 10420734, 11779552, reported to NIH under R01DK048807, R37DK048807.
  3. 3 · FDA approval

    Approved Jan 27, 2023, held by Stemline Therapeutics (NDA 217639).
  4. 4 · Public pays

    Medicare paid $259M in 2024 for 2,633 patients; Medicaid $35M.

What Medicare paid for Orserdu

Medicare Part D and Part B gross spending by year, before manufacturer rebates.
2020: $020202021: $020212022: $020222023: $128M20232024: $259M2024: $259M2024

The grants

Totals are everything NIH paid on each grant since 1985. A grant usually funded more than this one invention.
GrantResearchYearsNIH paid
R01DK048807

NIDDK

ER and LXR as mediators of the pathobiology of hypercholesterolemia

Duke University

1995–2019$5.5M
R37DK048807

NIDDK

Mechanism of Action of Estrogens and Antiestrogens

Duke University

2005–2014$5.0M

The patents

Patents the FDA lists for this drug that were also reported to NIH as grant-funded inventions.
  • US 10071066

    METHOD OF TREATING CANCER USING SELECTIVE ESTROGEN RECEPTOR MODULATORS

    Reported by Duke University

    FDA-listed expiry Oct 10, 2034
  • US 10420734

    METHOD OF TREATING CANCER USING SELECTIVE ESTROGEN RECEPTOR MODULATORS

    Reported by Duke University

    FDA-listed expiry Oct 3, 2036
  • US 11779552

    METHOD OF TREATING CANCER USING SELECTIVE ESTROGEN RECEPTOR MODULATORS

    Reported by Duke University

    FDA-listed expiry Oct 10, 2034

Stemline Therapeutics's side

Drug makers pay for the clinical trials that take a compound from the lab to FDA approval, and they often license the patent from the university and pay royalties on sales. Those terms are not public. The FDA's approval records for Orserdu are linked above, and Stemline Therapeutics's page shows its other drugs on this list. If Stemline Therapeutics wants to add its account, we will publish it here.

How this is built. Universities and companies that use NIH grants must report the inventions those grants produce to NIH, under the Bayh-Dole Act. NIH publishes the patent numbers and the grants they were reported under. We match those patents to the patents drug makers list with the FDA for each approved drug (the Orange Book), then add what Medicare Part D, Part B and Medicaid paid for each drug. Only patents still listed with the FDA appear, so drugs whose patents have expired drop out, and biologics, which the Orange Book does not cover, are not here yet.

What the numbers mean. "NIH grants" is everything NIH paid out on the grants a patent was reported under, from 1985 on. A grant usually paid for more than the one invention, so it is not the cost of the drug. Medicare and Medicaid figures are gross spending before the rebates drug makers pay back, which are confidential. Companies also paid for the clinical trials that took these drugs to approval; each drug page links the company's own filings.

Sources: NIH RePORTER patents reported under NIH grants (from iEdison); NIH RePORTER project funding; FDA Orange Book patent and product files; Medicare Part D Spending by Drug; Medicare Part B Spending by Drug; Medicaid Spending by Drug. Updated 2026-11-05.