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A Safety Study of SGN-35C in Adults With Advanced Cancers

Recruiting
18 years of age
Both
Phase 1

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Overview

This clinical trial is studying lymphoma. Lymphoma is a cancer that starts in the blood cells that fight infection. There are several types of lymphoma. This study will enroll people who have classical Hodgkin lymphoma (cHL), peripheral T cell lymphoma (PTCL), or diffuse large B cell lymphoma (DLBCL).

This clinical trial uses a drug called SGN-35C . The study drug is in testing and has not been approved for sale. This is the first time SGN -35C will be used in people.

This study will test the safety of SGN-35C in participants with lymphoma. It will also study the side effects of this drug. A side effect is anything a drug does to the body besides treating the disease.

This study will have three parts. Parts A and B of the study will find out the best dose and dosing schedule for SGN-35C. Part C will use the dose found in parts A and B to find out how safe SGN-35C is and if it works to treat select lymphomas.

Eligibility

Inclusion Criteria:

  • Tumor type
  • For dose escalation and dose optimization (Parts A and B):
    • Participants with a histologically confirmed lymphoid neoplasm who in the judgement of the investigator have no appropriate standard therapy available at the time of enrollment and are a candidate for SGN- 35C treatment. Eligible subtypes and treatment status are as follows:
      • Participants with relapsed/refractory (R/R) cHL: should have received at least 3 prior systemic therapies including autologous stem cell transplant [ASCT] (ASCT and the associated high-dose chemotherapy prior to ASCT are considered to be 1 prior line) or an anti-PD-1 agent (or refused/were ineligible); or 2 prior systemic therapies if, according to the investigator, no other appropriate standard treatment is available.
      • Participants with R/R PTCL (excluding systematic anaplastic large cell lymphoma [sALCL]): should have received at least 2 prior systemic therapies, or 1 prior systemic therapy if, according to the investigator, no other appropriate standard treatment is available.
      • Participants with R/R sALCL: should have received at least 2 prior systemic therapies, including 1 brentuximab vedotin-containing regimen, or 1 prior line of systemic therapy including brentuximab vedotin, cyclophosphamide, doxorubicin, and prednisone.
      • Participants with R/R DLBCL: should have received at least 2 prior systemic therapies, including ASCT and chimeric antigen receptor (CAR) T-cell therapy, or were ineligible, or refused.
    • Participants with PTCL and DLBCL must have a detectable cluster of

      differentiation 30 (CD30) expression level (≥1%) in tumor tissue from the most recent biopsy obtained at or after relapse by local testing.

  • For dose expansion (Part C):
    • Participants are eligible irrespective of CD30 expression on tumor tissue; however, participants must provide tumor tissue for evaluation of CD30 expression from the most recent biopsy obtained at or after relapse.
    • Participants with cHL, PTCL, sALCL, and DLBCL: Eligible subtypes are the same as defined in Parts A and B
    • If activated, the biology cohort may enroll the populations included in Parts A, B, and C.
  • Eastern Cooperative Oncology Group (ECOG) Performance Status score of ≤1
  • Fluorodeoxyglucose positron emission tomography (FDG-PET) avid and bidimensional measurable disease as documented by radiographic technique (spiral computed tomography [CT] preferred)

Exclusion Criteria:

  • Previous exposure to any antibody-drug conjugates (ADCs) with camptothecin-based payload.
  • History of another malignancy within 3 years before the first dose of study drug, or any evidence of residual disease from a previously diagnosed malignancy. Exceptions are malignancies with a negligible risk of metastasis or death
  • Active cerebral/meningeal disease related to the underlying malignancy
  • Received previous ASCT infusion <12 weeks prior to the first dose of SGN-35C.
  • Previous allogeneic stem cell transplant (SCT) if they meet any of the following
    criteria
    • <100 days from allogeneic SCT. Participants ≥100 days from allogeneic SCT who are stable without immunosuppressive therapy for at least 12 weeks are permitted.
    • Active acute or chronic graft-versus-host disease (GVHD) or receiving immunosuppressive therapy as treatment for or prophylaxis against GVHD.
  • History of clinically significant GI bleeding, intestinal obstruction, or GI

    perforation within 6 months of initiation of trial treatment.

Study details

Hodgkin Disease, Lymphoma, T-Cell, Peripheral, Lymphoma

NCT06254495

Seagen Inc.

17 January 2025

Step 1 Get in touch with the nearest study center
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  • You can expect the study team to contact you via email or phone in the next few days.
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FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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