Generic Zydelig Availability
Last updated on Jan 8, 2025.
Zydelig is a brand name of idelalisib, approved by the FDA in the following formulation(s):
ZYDELIG (idelalisib - tablet;oral)
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Manufacturer: GILEAD SCIENCES INC
Approval date: July 23, 2014
Strength(s): 100MG [RLD], 150MG [RLD]
Has a generic version of Zydelig been approved?
No. There is currently no therapeutically equivalent version of Zydelig available in the United States.
Note: Fraudulent online pharmacies may attempt to sell an illegal generic version of Zydelig. These medications may be counterfeit and potentially unsafe. If you purchase medications online, be sure you are buying from a reputable and valid online pharmacy. Ask your health care provider for advice if you are unsure about the online purchase of any medication.
See also: Generic Drug FAQ.
Related patents
Patents are granted by the U.S. Patent and Trademark Office at any time during a drug's development and may include a wide range of claims.
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Polymorphic forms of (S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one
Patent 10,730,879
Issued: August 4, 2020
Inventor(s): Carra Ernest & Gerber Michael & Shi Bing & Sujino Keiko & Tran Duong & Wang Fang & Evarts Jerry B.
Assignee(s): Gilead Calistoga LLCPolymorphs of (S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one, compositions thereof, methods for their preparation, and methods for their use are disclosed.
Patent expiration dates:
- March 5, 2033✓✓
- March 5, 2033
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[S, H]
Patent 8,865,730
Issued: October 21, 2014
Inventor(s): Carra Ernest & Gerber Michael & Shi Bing & Sujino Keiko & Tran Duong & Wang Fang & Evarts Jerry B.
Assignee(s): Gilead Calistoga LLCPolymorphs of (S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one, compositions thereof, methods for their preparation, and methods for their use are disclosed.
Patent expiration dates:
- March 5, 2033✓✓✓
- March 5, 2033
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5-fluoro-3-phenyl-2[1-(9H-purin-6-ylamino)propyl]-3H-quinazolin-4-one and 6-fluoro-3-phenyl-2-[1-(9H-purin-6-ylamino)ethyl]-3H-quinazolin-4-one as inhibitors of human phosphatidylinositol 3-kinase delta
Patent 8,980,901
Issued: March 17, 2015
Inventor(s): Fowler Kerry W. & Huang Danwen & Kesicki Edward A. & Ooi Hua Chee & Oliver Amy & Ruan Fuqiang & Treiberg Jennifer & Puri Kamal Deep
Assignee(s): Icos CorporationCompounds that inhibit PI3Kδ activity, including compounds that selectively inhibit PI3Kδ activity, are disclosed. Methods of inhibiting phosphatidylinositol 3-kinase delta isoform (PI3Kδ) activity, and methods of treating diseases, such as disorders of immunity and inflammation in which PI3Kδ plays a role in leukocyte function, using the compounds also are disclosed. Exemplary compounds disclosed in this application are shown below:
Patent expiration dates:
- May 12, 2025✓
- May 12, 2025
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5-fluoro-3-phenyl-2-[1-(9h-purin-6-ylamino)propyl]-3h-quinazolin-4-one as an inhibitor of human phosphatidylinositol 3-kinase delta
Patent 9,149,477
Issued: October 6, 2015
Inventor(s): Kesicki Edward A. & Fowler Kerry W. & Huang Danwen & Ooi Hua Chee & Oliver Amy & Puri Kamal Deep & Ruan Fuqiang & Treiberg Jennifer
Assignee(s): ICOS CorporationCompounds that inhibit PI3Kδ activity, including compounds that selectively inhibit PI3Kδ activity, are disclosed. Methods of inhibiting phosphatidylinositol 3-kinase delta isoform (PI3Kδ) activity, and methods of treating diseases, such as disorders of immunity and inflammation in which PI3Kδ plays a role in leukocyte function, using the compounds also are disclosed. An exemplary compound disclosed in this application is shown below:
Patent expiration dates:
- May 12, 2025✓
- May 12, 2025
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Polymorphic forms of (S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one
Patent 9,469,643
Issued: October 18, 2016
Inventor(s): Carra Ernest & Gerber Michael & Shi Bing & Sujino Keiko & Tran Duong & Wang Fang & Evarts Jerry B.
Assignee(s): Gilead Calistoga, LLC.Polymorphs of (S)-2-(1-(9H-purin-6-ylamino)propyl)-5-fluoro-3-phenylquinazolin-4(3H)-one, compositions thereof, methods for their preparation, and methods for their use are disclosed.
Patent expiration dates:
- September 2, 2033✓
- September 2, 2033
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Therapies for hematologic malignancies
Patent 9,492,449
Issued: November 15, 2016
Inventor(s): Gallatin W. Michael & Ulrich Roger G. & Giese Neill A. & Lannutti Brian & Miller Langdon & Jahn Thomas M.
Assignee(s): Gilead Calistoga LLCThe invention provides methods that relate to a novel therapeutic strategy for the treatment of hematological malignancies and inflammatory diseases. In particular, the method comprises administering a compound of formula A,
Patent expiration dates:
- March 11, 2030✓
- March 11, 2030
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Quinazolinones as inhibitors of human phosphatidylinositol 3-kinase delta
Patent RE44599
Issued: November 12, 2013
Inventor(s): Fowler Kerry W. & Huang Danwen & Kesicki Edward A. & Ooi Hua Chee & Oliver Amy & Ruan Fuqiang & Treiberg Jennifer & Puri Kamal Deep
Assignee(s): ICOS CorporationCompounds that inhibit P13Kδ activity, including compounds that selectively inhibit P13Kδ activity, are disclosed. Methods of inhibiting phosphatidylinositol 3-kinase delta isoform (P13Kδ) activity, and methods of treating diseases, such as disorders of immunity and inflammation in which P13Kδ plays a role in leukocyte function, using the compounds also are disclosed.
Patent expiration dates:
- July 21, 2025✓
- July 21, 2025✓
- July 21, 2025
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Quinazolinones as inhibitors of human phosphatidylinositol 3-kinase delta
Patent RE44638
Issued: December 10, 2013
Inventor(s): Fowler Kerry W. & Huang Danwen & Kesicki Edward A. & Ooi Hua Chee & Oliver Amy & Ruan Fuqiang & Treiberg Jennifer & Puri Kamal Deep
Assignee(s): ICOS CorporationThe invention provides a class of substituted quinazolinone compounds and methods of treating diseases mediated by PI3Kδ activity. The disclosed compounds are useful in treating diseases such as bone-resorption disorders; and cancer, especially hematopoietic cancers, lymphomas, multiple myelomas and leukemia. The compounds are also useful in disrupting or inhibiting cellular processes such as leukocyte function or accumulation, neutrophils function, lymphocyte proliferation, and endogenous immune responses.
Patent expiration dates:
- August 5, 2025✓✓
- August 5, 2025
More about Zydelig (idelalisib)
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- Dosage information
- Patient tips
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- FDA approval history
- Drug class: PI3K inhibitors
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Patient resources
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Glossary
Term | Definition |
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Drug Patent | A drug patent is assigned by the U.S. Patent and Trademark Office and assigns exclusive legal right to the patent holder to protect the proprietary chemical formulation. The patent assigns exclusive legal right to the inventor or patent holder, and may include entities such as the drug brand name, trademark, product dosage form, ingredient formulation, or manufacturing process A patent usually expires 20 years from the date of filing, but can be variable based on many factors, including development of new formulations of the original chemical, and patent infringement litigation. |
Drug Exclusivity | Exclusivity is the sole marketing rights granted by the FDA to a manufacturer upon the approval of a drug and may run simultaneously with a patent. Exclusivity periods can run from 180 days to seven years depending upon the circumstance of the exclusivity grant. |
RLD | A Reference Listed Drug (RLD) is an approved drug product to which new generic versions are compared to show that they are bioequivalent. A drug company seeking approval to market a generic equivalent must refer to the Reference Listed Drug in its Abbreviated New Drug Application (ANDA). By designating a single reference listed drug as the standard to which all generic versions must be shown to be bioequivalent, FDA hopes to avoid possible significant variations among generic drugs and their brand name counterpart. |
Further information
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