for people ages 18 years and up (full criteria)
at San Francisco, California and other locations
study started
estimated completion
Lee-May Chen



This is a multi-center, open-label, first-in-human Phase 1 study evaluating the anti-programmed death receptor 1 (anti-PD-1) antibody dostarlimab (also known as TSR-042) in patients with advanced solid tumors who have limited available treatment options. The study will be conducted in 2 parts: dose escalation and cohort expansion. The cohort expansion may include various tumor types, including endometrial, Non-Small Cell Lung cancer, and non-endometrial deficient mismatch repair (dMMR)/microsatellite instability-high (MSI-H) solid tumors.


Advanced or Metastatic Solid Tumors Metastatic solid tumors Advanced solid tumors anti-PD-1 TSR-042 Immunotherapy PD-1 Endometrial Non-small cell lung cancer, NSCLC MSI-High Dostarlimab dMMR Neoplasms Antibodies Antibodies, Monoclonal


You can join if…

Open to people ages 18 years and up

  • Patient is at least 18 years of age
  • Patient with advanced or metastatic solid tumor and has disease progression after treatment who are intolerant to treatment that meets the following requirements for the part of the study they will participate in:
  • Part 1: Patient with any advanced or metastatic solid tumor
  • Part 2A: Patient with any advanced or metastatic solid tumor
  • Part 2B: Patient with Non-Small Cell Lung Cancer (NSCLC), Endometrial cancers, and MSI-H solid tumors.
  • Female patients, if of childbearing potential, must have a negative serum pregnancy test within 72 hours prior to the date of the first dose of study medication.
  • Female patients of childbearing potential must agree to use 2 adequate methods of contraception with their partner starting with the screening visit through 150 days after the last dose of study therapy.
  • Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2 for Part 1 and ≤ 1 for Part 2. Adequate organ function.

You CAN'T join if...

  • Patient has received prior therapy with an anti- programmed death receptor 1 (anti-PD-1), anti-PD-1- ligand-1 (anti-PD-L1), or anti-PD-1 ligand-2 (anti-PD- L2) agent.
  • Known uncontrolled central nervous system (CNS) metastases and/or carcinomatous meningitis. Note: Patients with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least 4 weeks prior to the first dose of study treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are clinically stable off steroids for at least 7 days prior to study treatment. Carcinomatous meningitis precludes a patient from study participation regardless of clinical stability.
  • Known additional malignancy that progressed or required active treatment within the last 2 years. Exceptions include basal cell carcinoma of the skin, squamous cell cancer (SqCC) of the skin that has undergone potentially curative therapy, or in situ cervical cancer.
  • Known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies).
  • Known active hepatitis B (eg, hepatitis B surface antigen [HBsAg] reactive) or hepatitis C (eg, hepatitis C virus ribonucleic acid (HCV RNA) (qualitative) is detected).
  • Active autoimmune disease that has required systemic treatment in the past 2 years (ie, with use of disease- modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy (eg, thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment.
  • History of interstitial lung disease.


  • San Francisco California United States
  • Santa Monica California United States

Lead Scientist

  • Lee-May Chen
    Dr. Lee-may Chen is the Division Director and Program Director for the UCSF/KPSF Gynecologic Oncology Fellowship Program. She is deeply committed to education and improving the outcomes of gynecologic cancer care. Since 2008, I have been the director of the UCSF Gynecologic Cancer Risk Program.


accepting new patients
Start Date
Completion Date
Tesaro, Inc.
Phase 1
Study Type
Last Updated