Study of Pembrolizumab (MK-3475) in Participants With Relapsed or Refractory Primary Mediastinal Large B-cell Lymphoma or Relapsed or Refractory Richter Syndrome (MK-3475-170/KEYNOTE-170)

Overview

  • Study type

    Interventional
  • Study phase

    II
  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

  • Site IRB
    • Jacksonville, Florida: 15-008631
    • Rochester, Minnesota: 15-008631
    NCT ID: NCT02576990
    Sponsor Protocol Number: MK-3475-170-01

About this study

In this study, participants with relapsed or refractory primary mediastinal large B-cell lymphoma (rrPMBCL) or relapsed or refractory Richter Syndrome (rrRS) will receive pembrolizumab (MK-3475). The efficacy of pembrolizumab in the treatment of rrPMBCL and rrRS will be evaluated.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • PMBCL:
  • Diagnosis of relapsed or refractory primary mediastinal large B-cell lymphoma AND
  • Has relapsed after autologous stem cell transplant (auto-SCT) or has failed to achieve a Complete Response or Partial Response within 60 days of auto-SCT. Participants may have received intervening therapy after auto-SCT for relapsed or refractory disease, in which case they must have relapsed after or be refractory to their last treatment.

OR

  • For participants who are ineligible for auto-SCT, has received at least ≥2 lines of prior therapy and has failed to respond to or relapsed after their last line of treatment. For participants who received consolidative local radiotherapy after systemic therapy, local radiotherapy will not be considered as a separate line of treatment.
  • Previously exposed to rituximab as part of prior lines of treatment.
  • RS:
  • Pathologic diagnosis per local institutional review of Richter syndrome that transformed from chronic lymphocytic leukemia (CLL).
  • Relapsed or refractory Richter syndrome and has received ≥1 previous treatment for RS.
  • All Participants:
  • Radiographically measureable disease.
  • Performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) Performance Scale.
  • Life expectancy >3 months.
  • Adequate organ function.
  • Female participants of childbearing potential must be willing to use an adequate method of contraception for the course of the study through 120 days after the last dose of study drug.
  • Male participants of childbearing potential must agree to use an adequate method of contraception, starting with the first dose of study drug through 120 days after the last dose of study drug.

Exclusion Criteria:

  • Is currently participating and receiving study therapy or has participated in a study of an investigational agent and received study therapy or used an investigational device within 4 weeks of the first dose of study drug.
  • Is receiving systemic steroid therapy <3 days before the first dose of study drug or receiving any other form of immunosuppressive medication.
  • Prior monoclonal antibody within 4 weeks prior to study Day 1 (2 weeks for RS participants) or who has not recovered (i.e. ≤ Grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier (2 weeks for RS participants).
  • Prior chemotherapy or targeted small molecule therapy within 2 weeks prior to study Day 1 or prior radiation therapy within 4 weeks prior to study Day 1.
  • Allogeneic hematopoietic stem cell transplantation within the last 5 years.
  • Has a known additional malignancy (except underlying CLL for RS) that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin, or in situ cervical cancer that has undergone potentially curative therapy.
  • Known clinically active central nervous system involvement.
  • Active autoimmune disease requiring systemic treatment in past 2 years.
  • History of (non-infectious) pneumonitis that required steroids, or current pneumonitis.
  • Active infection requiring intravenous systemic therapy.
  • Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the pre-screening or screening visit through 120 days after the last dose of study drug.
  • Has received prior therapy with an anti-programmed cell death 1 (anti-PD-1), anti-programmed cell death ligand 1 (anti-PD-L1), anti-PD-L2, anti-CD137, or anti-cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) antibody (including ipilimumab or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways).
  • Known human immunodeficiency virus (HIV), or Hepatitis B or C.
  • Has received a live vaccine within 30 days prior to first dose of study drug.

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Jacksonville, Fla.

Mayo Clinic principal investigator

Wei Ding, M.B.B.S., Ph.D.

Closed for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office

855-776-0015

Rochester, Minn.

Mayo Clinic principal investigator

Wei Ding, M.B.B.S., Ph.D.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office

855-776-0015

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions