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Calithera Biosciences

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About Calithera Biosciences

Calithera Biosciences, formerly Protein Activation Therapeutics, develops therapeutic approaches to the treatment of cancer by using small molecules to activate, rather than inhibit, enzymes. The company's first program is focused on developing activators of caspases, the proteases that induce apoptosis, for the treatment of cancer. The approach of discovering activators of enzymes has the potential to be a unique and broadly applicable technology platform for developing therapies to multiple oncology indications. The company was founded in 2010 and is based in South San Francisco, California.

Headquarters Location

343 Oyster Point Blvd Suite 200

South San Francisco, California, 94080,

United States


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Expert Collections containing Calithera Biosciences

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

Calithera Biosciences is included in 2 Expert Collections, including Cancer.



4,784 items

Pharmaceutical and biotechnology companies with cancer therapy drug candidates.


Biopharma Tech

15,535 items

Companies involved in the research, development, and commercialization of chemically- or biologically-derived therapeutic & theranostic drugs. Excludes vitamins/supplements, CROs/clinical trial services.

Calithera Biosciences Patents

Calithera Biosciences has filed 48 patents.

The 3 most popular patent topics include:

  • Immunology
  • Clusters of differentiation
  • Experimental cancer drugs
patents chart

Application Date

Grant Date


Related Topics




Stereochemistry, Cannabinoids, Designer drugs, Fluoroarenes, Carboxamides


Application Date


Grant Date



Related Topics

Stereochemistry, Cannabinoids, Designer drugs, Fluoroarenes, Carboxamides



Latest Calithera Biosciences News

Calithera Biosciences Frequently Asked Questions (FAQ)

  • When was Calithera Biosciences founded?

    Calithera Biosciences was founded in 2010.

  • Where is Calithera Biosciences's headquarters?

    Calithera Biosciences's headquarters is located at 343 Oyster Point Blvd, South San Francisco.

  • What is Calithera Biosciences's latest funding round?

    Calithera Biosciences's latest funding round is IPO.

  • How much did Calithera Biosciences raise?

    Calithera Biosciences raised a total of $101.24M.

  • Who are the investors of Calithera Biosciences?

    Investors of Calithera Biosciences include Delphi Ventures, Morgenthaler Ventures, Advanced Technology Ventures, T. Rowe Price, Longwood Fund and 5 more.

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