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Anaplastic Large Cell LymphomaPhase 1/2NCT03598998

Pembrolizumab and Pralatrexate in Treating Patients With Relapsed or Refractory Peripheral T-Cell Lymphomas

A Phase 1/2 study testing Pembrolizumab and Pralatrexate in people with Anaplastic Large Cell Lymphoma and Nodal Peripheral T-Cell Lymphoma With TFH Phenotype, run by City of Hope Medical Center at 3 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This phase I/II trial studies the side effects and best dose of pralatrexate when given together with pembrolizumab and how well they work in treating patients with peripheral T-cell lymphomas that has come back after a period of improvement or has not responded to treatment. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Pembrolizumab and Pralatrexate
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
13 participants
Where
3 sitesUnited States
Study dates
25 Feb 2019to 18 Feb 2027
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Documented willingness and ability to sign an informed consent of the participant and/or legally authorized representative.
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  • Patients must have a histologically confirmed diagnosis of mature peripheral T-cell or natural killer (NK)-cell lymphoma according to the World Health Organization (WHO) classification, with hematopathology review at the participating institution. Eligible histologies are:
  • Peripheral T-cell lymphoma, not otherwise specified
  • Anaplastic large cell lymphoma, ALK-negative
  • Anaplastic large cell lymphoma, ALK-positive
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  • Angioimmunoblastic T-cell lymphoma
  • Nodal peripheral T-cell lymphoma with TFH phenotype
  • Follicular T-cell lymphoma
  • Indolent T-cell lymphoproliferative disorder of the gastrointestinal (GI) tract
  • Extranodal NK-/T-cell lymphoma
  • Enteropathy-associated T cell lymphoma
  • Monomorphic epitheliotropic intestinal T-cell lymphoma
  • Hepatosplenic T-cell lymphoma
  • Subcutaneous panniculitis-like T-cell lymphoma
  • Transformed mycosis fungoides
  • Patients must have failed at least one prior regimen, including:
  • Recurrence of disease after a documented complete response (CR).
  • Progression of disease after a partial response (PR) to the prior regimen.
  • Partial response, stable disease (SD) or progressive disease (PD) at the completion of the prior treatment regimen. If a patient has PR to prior regimen without PD, there must be biopsy-proven** residual disease that is measurable
  • Exception can be granted by the principal investigator (PI) if a biopsy is not feasible and/or safe
  • Patient must have measurable disease by computerized tomography (CT) or positron emission tomography (PET) scan, with one or more sites of disease >= 1.5cm in longest dimension.
  • Be willing to provide tissue from a fresh core or excisional biopsy of a tumor lesion prior to starting study therapy or from archival tissue of a biopsy that was performed after the most recent systemic therapy. Exception can be granted by the PI if a biopsy is not feasible and/or safe
  • Patients must have received one dose of vitamin B12 (1 mg intramuscularly [IM]) within 10 weeks prior to first dose of pralatrexate, and must have begun folic acid supplementation (1 mg orally, once daily) within 10 days of first dose of pralatrexate. Note: If folic acid was not started but methylmalonic acid (MMA) and homocysteine (HCY) levels were checked and are in normal range at screening, the investigator can decide to start study therapy immediately. Vitamin B12 and folic acid supplementation is standard of care for pralatrexate therapy.
  • Absolute neutrophil count (ANC) >= 1,000/mm^3. In Phase 2 portion of study, ANC < 1000/mm^3 but >= 500/mm^3 is allowable if patients have demonstrated bone marrow involvement by lymphoma (within 14 days prior to day 1 of protocol therapy).
  • Note: Growth factor is not permitted within 7 days of ANC assessment unless cytopenia is secondary to disease involvement.
  • Platelets >= 75,000/mm^3. In Phase 2 portion of study, Platelets < 75,000/mm^3 but >= 25,000/mm^3 is allowable if patients have demonstrated bone marrow involvement by lymphoma (within 14 days prior to day 1 of protocol therapy)
  • Note: Platelet transfusions are not permitted within 7 days of platelet assessment unless cytopenia is secondary to disease involvement.
  • Total serum bilirubin =< 1.5 X upper limit of norma (ULN) or =< 3X ULN for Gilbert's disease. Direct bilirubin =< ULN for subjects with total bilirubin levels > 1.5 ULN (within 14 days prior to day 1 of protocol therapy).
  • Aspartate aminotransferase (AST) =< 2.5 x ULN (within 14 days prior to day 1 of protocol therapy)
  • Alanine aminotransferase (ALT) =< 2.5 x ULN (within 14 days prior to day 1 of protocol therapy)
  • Creatinine clearance of >= 60 mL/min per the Cockcroft-Gault formula (within 14 days prior to day 1 of protocol therapy). If creatinine clearance (CrCl) is >= 60 mL/min as measured by 24 hour urine collection, this will be allowable.
  • If not receiving anticoagulants: International normalized ratio (INR) OR prothrombin (PT) =< 1.5 x ULN (within 14 days prior to day 1 of protocol therapy).
  • If on anticoagulant therapy: PT must be within therapeutic range of intended use of anticoagulants.
  • If not receiving anticoagulants: Activated partial thromboplastin time (aPTT) =< 1.5 x ULN (within 14 days prior to day 1 of protocol therapy)
  • If on anticoagulant therapy: aPTT must be within therapeutic range of intended use of anticoagulants.
  • Female of childbearing potential: negative urine or serum pregnancy test within 72 hours prior to receiving the first dose of study medication (within 14 days prior to day 1 of protocol therapy). If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.
  • Woman of childbearing potential (WOCBP): Use two effective methods of contraception (hormonal or barrier method) or be surgically sterile, or abstain from heterosexual activity for the course of the study through 120 days post last dose of pembrolizumab. WOCBP defined as not being surgically sterilized or have not been free from menses for >1 year.
  • Male: Use two effective methods of contraception (barrier method) or abstain from heterosexual activity with the first dose of study therapy through 120 days post last dose of pembrolizumab.

Who cannot join

  • Patients with adult T-cell leukemia/lymphoma
  • Prior allogeneic hematopoietic stem cell transplantation within the last 5 years.
  • Prior autologous hematopoietic stem cell transplant within the last 60 days.
  • Patients who received prior therapy with an anti-PD-1, anti-PD-L1, or anti-PD-L2 agent without having had evidence of objective response.
  • Patients who received prior therapy with pralatrexate without having had evidence of objective response.
  • Investigational agent or anti-cancer monoclonal antibody (mAb) within 21 days prior to day 1 of therapy or who has not recovered (i.e. =<1 or at baseline) from adverse events due to agents administered more than 21 days earlier.
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  • Prior chemotherapy, targeted small molecule therapy, or radiation therapy within 14 days prior to day 1 of therapy or who has not recovered (i.e. =< 1 or at baseline) from adverse events due to a previously administered agent. * Note: Subjects with =< grade 2 neuropathy are an exception and may qualify for the study.
  • Antineoplastic biologic therapy or major surgery within 21 days of the first dose of trial medication. If subjects received major surgery more than 21 days ago, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy.
  • Received live vaccine within 30 days prior to day 1 of protocol therapy.
  • Systemic steroid therapy or on any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment.
  • Diagnosis of immunodeficiency.
  • Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer.
  • Congestive heart failure class III/IV according to the New York Heart Association (NYHA) Functional classification.
  • Known severe hypersensitivity reaction to pembrolizumab, pralatrexate, leucovorin or any excipients.
  • Active autoimmune disease that has required systemic treatment in the past 2 years (replacement therapies for hormone deficiencies are allowed). Hemolytic anemia associated with the lymphoma does not exclude a patient from the study.
  • Known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies).
  • Known active hepatitis B (e.g., hepatitis B virus surface antigen (HBsAg) reactive) or hepatitis C (e.g., hepatitis C virus ribonucleic acid [HCV RNA] [qualitative] is detected).
  • History of tuberculosis (TB) infection (Bacillus tuberculosis).
  • Active central nervous system (CNS) involvement by lymphoma, including parenchymal and/or lymphomatous meningitis. Subjects with prior CNS involvement by lymphoma must have a baseline magnetic resonance imaging (MRI) and lumbar puncture at screening that demonstrate no active lymphoma in the CNS.
  • Has a history of (non-infectious) pneumonitis that required steroids or current pneumonitis.
  • Active, uncontrolled infection requires systemic therapy.
  • Female: Pregnant or breastfeeding.
  • Expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment.
  • Has known psychiatric or substance abuse disorder that would interfere with cooperation with the requirements of the trial.
  • History or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator.
  • Any other condition that would, in the investigator's judgment, contraindicate the patient's participation in the clinical study due to safety concerns with clinical study procedures.
  • Perspective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics).

Trial locations and contacts

3 sites in 1 country.

United States3 sites

  • Emory University Hospital/Winship Cancer Institute

    Atlanta, Georgia, 30322

  • City of Hope Medical Center

    Duarte, California, 91010

  • University of Nebraska Medical Center

    Omaha, Nebraska, 68198

Other trials in United States

About this study

Official title: A Phase 1/2 Study of Pembrolizumab Plus Pralatrexate for Treatment of Relapsed or Refractory Peripheral T-Cell Lymphomas

This phase I/II trial studies the side effects and best dose of pralatrexate when given together with pembrolizumab and how well they work in treating patients with peripheral T-cell lymphomas that has come back after a period of improvement or has not responded to treatment. Pralatrexate may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving pembrolizumab and pralatrexate may work better in treating patients with peripheral T-cell lymphomas.

Read the detailed description

PRIMARY OBJECTIVES:

  1. Evaluate the safety and tolerability of a regimen combining pembrolizumab and pralatrexate in patients with relapsed or refractory peripheral T-cell lymphoma (PTCL).

II. Establish the maximum tolerated dose (MTD) and recommended phase II dose (RP2D) of the combined pralatrexate and pembrolizumab regimen.

III. Estimate the overall response rate (ORR) according to the Lugano Classification in patients treated with pembrolizumab plus pralatrexate at the RP2D.

SECONDARY OBJECTIVES:

  1. Estimate the complete response (CR) rate according to the Lugano Classification duration of response (DOR), overall survival (OS) and progression-free survival (PFS) in patients treated with pembrolizumab plus pralatrexate.

II. Estimate the ORR and CR rate according to the International Harmonization Project response criteria.

III. Evaluate responses and disease progression according to the Lymphoma Response to Immunomodulatory therapy Criteria (LYRIC).

EXPLORATORY OBJECTIVE:

  1. Explore immunologic and genomic biomarkers of response to pembrolizumab plus pralatrexate therapy.

OUTLINE: This is a phase I, dose-escalation study of pralatrexate followed by a phase II study.

Patients receive pralatrexate intravenously (IV) over 3-5 minutes on days 1 and 8 and pembrolizumab IV over 30 minutes on day 1. Courses repeat every 21 days for up to 24 months in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up at 30 and 90 days, every 12 weeks for 1 year, and then every 18 weeks thereafter.

Being tested
Pembrolizumab, Pralatrexate
Medical subject headings
Lymphoma, Large-Cell, Anaplastic, Immunoblastic Lymphadenopathy, Enteropathy-Associated T-Cell Lymphoma, Lymphoma, Follicular, Lymphoma, T-Cell, Mycosis Fungoides, Subcutaneous panniculitis-like T-cell lymphoma

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PembrolizumabBiological

    Also called Keytruda, Lambrolizumab, MK-3475, SCH 900475

    Given IV

  • PralatrexateDrug

    Also called 10-propargyl-10-deazaaminopterin, Folotyn, PDX

    Given IV

Study groups in NCT03598998
Study groupRoleWhat they receive
Treatment (pralatrexate and pembrolizumab)ExperimentalPatients receive pralatrexate IV over 3-5 minutes on days 1 and 8 and pembrolizumab IV over 30 minutes on day 1. Courses repeat every 21 days for up to 24 months in the absence of disease progression or unacceptable toxicity.
Receives: Biological: Pembrolizumab; Drug: Pralatrexate

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants Who Had Dose Limiting Toxicities

    Dose limiting toxicities (DLT) were defined as one of the AEs in Protocol Section 5.5 that at least possibly related to study treatment. The DLT observation period was 2 cycles of therapy, from the start of Cycle 1 through the start of Cycle 3. Toxicities were graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE, Version 5.0).

    Measured: From the start of Cycle 1 through the start of Cycle 3 (approximately 42 days)

  2. Number of Participants Who Had Overall Response

    Number of participants who had a documented complete response (CR) or partial response (PR) at any time during study treatment. Disease response/progression by PET-CT or CT was evaluated using 2014 Lugano Classification.

    Measured: Up to 43 months after the initial study treatment.

Secondary outcomes (2)

  1. Number of Participants Who Had Complete Response (CR)

    Number of participants who had a documented complete response at any time during study treatment. Disease response/progression by PET-CT or CT was evaluated using 2014 Lugano Classification.

    Measured: Up to 43 months after the initial study treatment.

  2. Number of Participants With Grade 3 4 5 Adverse Events

    Number of Participants who had grade 3 4 5 toxicities at lease possibly related to study treatment. Toxicities were assessed according to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. Grade refers to the severity of the AE and ranges from 1 to 5 (Grade 1=Mild, Grade 2=Moderate, Grade 3=Severe, Grade 4=Life-threatening, Grade 5=Death).

    Measured: From the start time of the initial treatment assessed through 8 treatment cycles (21 days per cycle) up to 90 days from last dose (approximately 9 months).

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Jul 2018
  2. Study start25 Feb 2019
  3. Primary completion3 May 2023
  4. Study completion18 Feb 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
13 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03598998
Sponsor's protocol ID
17501
Other IDs
NCI-2018-01420, 17501
Status last verified
Oct 2026
First submitted
16 Jul 2018
Last updated
29 Oct 2026
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Pembrolizumab and Pralatrexate in people with Anaplastic Large Cell Lymphoma and Nodal Peripheral T-Cell Lymphoma With TFH Phenotype, run by City of Hope Medical Center at 3 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 39 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 29 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 3 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 27 Aug 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants Who Had Dose Limiting Toxicities (time frame: From the start of Cycle 1 through the start of Cycle 3 (approximately 42 days)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03598998.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Oct 2026.

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