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Tesaro is now part of GSK

Tesaro was acquired by GSK in 2019, significantly strengthening our oncology pipeline and increasing the pace and scale at which we can help patients living with cancer.

The website has closed, and our online information relating to oncology can now be found on our GSK websites. Below you will find links to key information and resources relating to our work in oncology.

Oncology research and development (R&D)

Our approach to R&D focuses on science related to the immune system, the use of human genetics and advanced technologies. The following pages provide information about our R&D work in oncology.

Clinical studies

Medical education grants


Tesaro created the following programmes to provide resources for people living with cancer, their care partners, and their healthcare providers.

  • Our Way Forward
    Encourages women living with ovarian cancer, their loved ones, and healthcare providers to rethink how they talk about ovarian cancer.
  • Not on My Watch
    Empowering women with recurrent ovarian cancer
    A resource programme to support patients in the US, TOGETHER with TESARO is now a part of Together with GSK Oncology, offering patients and healthcare professionals in the US one source for GSK patient support services.
  • Gemstone Oncology
    Educational resources developed by a committee of experts in gynecologic cancer care.


We are a global company delivering billions of healthcare products a year. Visit our Careers section and choose your path.

US and European markets

You can access country websites via the Contact us section

You can search for specific contacts within a market in our worldwide contact information