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Claims for Patent: 9,278,901

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Claims for Patent: 9,278,901

Title:Compounds and methods for delivery of prostacyclin analogs
Abstract: This invention pertains generally to prostacyclin formulations and methods for their use in promoting vasodilation, inhibiting platelet aggregation and thrombus formation, stimulating thrombolysis, inhibiting cell proliferation (including vascular remodeling), providing cytoprotection, preventing atherogenesis and inducing angiogenesis.
Inventor(s): Phares; Ken (Chapel Hill, NC), Mottola; David (Cary, NC), Jeffs; Roger (Chapel Hill, NC)
Assignee: United Therapeutics Corporation (Silver Spring, MD)
Application Number:14/710,694
Patent Claims: 1. A method of treating pulmonary hypertension comprising administering to a subject in needed thereof an oral pharmaceutical formulation comprising a pharmaceutically acceptable salt or ester of treprostinil which has an absolute bioavailability of at least 15%, wherein a Cmax in a plasma of the subject increases in a linear fashion with a dose of at least 0.05 mg administered to the subject and wherein a concentration of treprostinil in the plasma of the subject is at least 50 pg/ml for at least 8 hours.

2. The method of claim 1, wherein the absolute bioavailability of said salt or ester ranges from 21 to 25%.

3. The method of claim 1, wherein the oral bioavailability of the salt or ester is at least 50% greater than the oral bioavailability of treprostinil as free acid.

4. The method of claim 1, wherein the oral bioavailability of the salt or ester is at least 100% greater than the oral bioavailability of treprostinil as free acid.

5. The method of claim 1, wherein the pharmaceutically acceptable salt or ester is the diethanolamine salt of treprostinil.

6. The method of claim 1, wherein the subject is a human.

7. A method of treating pulmonary hypertension comprising administering to a subject in needed thereof an oral pharmaceutical formulation comprising a pharmaceutically acceptable salt or ester of treprostinil which has an absolute bioavailability of at least 15%, wherein an AUCinf in a plasma of the subject increases in a linear fashion with a dose of at least 0.05 mg administered to the subject and wherein a concentration of treprostinil in the plasma of the subject is at least 50 pg/ml for at least 8 hours.

8. The method of claim 7, wherein the absolute bioavailability of said salt or ester ranges from 21 to 25%.

9. The method of claim 7, wherein the oral bioavailability of the salt or ester is at least 50% greater than the oral bioavailability of treprostinil as free acid.

10. The method of claim 7, wherein the oral bioavailability of the salt or ester is at least 100% greater than the oral bioavailability of treprostinil as free acid.

11. The method of claim 7, wherein the pharmaceutically acceptable salt or ester is the diethanolamine salt of treprostinil.

12. The method of claim 7, wherein the subject is a human.
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