A Safety Study of SEA-TGT (SGN-TGT) in Advanced Cancer

NCT ID: NCT04254107

Last Updated: 2025-02-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE1

Total Enrollment

133 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-05-29

Study Completion Date

2023-12-01

Brief Summary

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This trial will look at a drug called SEA-TGT (also known as SGN-TGT) to find out whether it is safe for patients with solid tumors and lymphomas. It will study SEA-TGT to find out what its side effects are. A side effect is anything the drug does besides treating cancer. It will also study whether SEA-TGT works to treat solid tumors and lymphomas.

The study will have four parts. Part A of the study will find out how much SEA-TGT should be given to patients. Part B will use the dose found in Part A to find out how safe SEA-TGT is and if it works to treat solid tumors and lymphomas. Part C will study how well SEA-TGT with sasanlimab works to treat solid tumors. Part D will study how well SEA-TGT with brentuximab vedotin works to treat classical Hodgkin lymphoma (cHL).

Detailed Description

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Conditions

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Non-small Cell Lung Cancer Gastric Carcinoma Gastroesophageal Junction Carcinoma Classical Hodgkin Lymphoma Diffuse Large B-cell Lymphoma Peripheral T-cell Lymphoma Cutaneous Melanoma Head and Neck Squamous Cell Carcinoma Bladder Cancer Ovarian Cancer Triple Negative Breast Cancer Cervical Cancer

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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SEA-TGT Monotherapy (Parts A and B)

SEA-TGT

Group Type EXPERIMENTAL

SEA-TGT

Intervention Type DRUG

Given into the vein (IV; intravenously) on Day 1 of each 21-day cycle

SEA-TGT + sasanlimab Combination Therapy (Part C)

SEA-TGT + sasanlimab

Group Type EXPERIMENTAL

SEA-TGT

Intervention Type DRUG

Given into the vein (IV; intravenously) on Day 1 of each 21-day cycle

sasanlimab

Intervention Type DRUG

Given via injection under the skin (subcutaneous) on Day 1 of each 21-day cycle

SEA-TGT + brentuximab vedotin Combination Therapy (Part D)

SEA-TGT + brentuximab vedotin

Group Type EXPERIMENTAL

SEA-TGT

Intervention Type DRUG

Given into the vein (IV; intravenously) on Day 1 of each 21-day cycle

brentuximab vedotin

Intervention Type DRUG

Given by IV on Day 1 of each 21-day cycle

Interventions

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SEA-TGT

Given into the vein (IV; intravenously) on Day 1 of each 21-day cycle

Intervention Type DRUG

sasanlimab

Given via injection under the skin (subcutaneous) on Day 1 of each 21-day cycle

Intervention Type DRUG

brentuximab vedotin

Given by IV on Day 1 of each 21-day cycle

Intervention Type DRUG

Other Intervention Names

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SGN-TGT Adcetris

Eligibility Criteria

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Inclusion Criteria

* Histologically- or cytologically-confirmed advanced or metastatic malignancy, defined as:

* One of the following tumor types:

* Unresectable locally-advanced or metastatic non-small cell lung cancer (NSCLC), gastric/gastroesophageal (GE) junction carcinoma, cutaneous melanoma, head and neck squamous cell carcinoma (HNSCC), bladder cancer, cervical cancer, ovarian cancer, or triple negative breast cancer (TNBC)
* Lymphomas, including:

* cHL
* Diffuse large B-cell lymphoma (DLBCL)
* Peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS)
* Lymphoma: Participants should have disease progression on or after treatment with standard therapies expected to provide benefit in the judgement of the investigator.

* cHL: Participants must have received at least 3 prior systemic therapies. Participants should have had disease recurrence or progression following brentuximab vedotin therapy or have been ineligible to receive brentuximab vedotin. Participants who have not received autologous stem cell transplant (SCT) must have refused or been deemed ineligible. Participants should have received or not be eligible to have received an anti-PD-1 agent.
* DLBCL: Participants must have received at least 2 prior systemic chemo-immunotherapy regimens, including an anti-CD20 agent and combination chemotherapy. Unless clinically contraindicated, participants should have had disease that has relapsed after or be refractory to intensive salvage chemotherapy, including autologous SCT.
* PTCL-NOS: Participants must have had at least 1 prior systemic therapy. Participants must have received or have been ineligible to receive the combination of cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) or CHOP-like therapy. Participants with CD30-positive disease must have received or be ineligible to receive brentuximab vedotin. Participants must have also received intensive salvage therapy (defined as combination chemotherapy ± autologous SCT) unless they refused or were deemed ineligible.
* Measurable disease defined as:

* Solid tumors: Measurable disease according to RECIST V1.1
* Lymphomas: Fluorodeoxyglucose (FDG)-avid disease by positron emission tomography (PET) and measurable disease of ≥15 mm in the greatest transverse diameter by computed tomography (CT) scan, as assessed by the site radiologist.
* A representative archival tumor tissue sample should be available as follows: Participants must provide archived tumor tissue, if available, from the most recent biopsy (less than or equal to \[≤\] 12 months from screening). If archived tissue is not available, a fresh baseline tumor biopsy will be requested for any participant enrolled in Part B whose tumors are considered accessible and appropriate in the opinion of the investigator.
* ECOG Performance Status score of 0 or 1


* ECOG Performance Status score of 0 or 1
* NSCLC: histological or cytological confirmed metastatic disease. Participants must have received no prior anti-PD-1/PD-L1 therapy allowed.
* HNSCC: histological or cytological confirmed metastatic disease. Participants must have received no prior exposure to anti-PD-1/PD-L1 therapy.
* Cutaneous Melanoma: histological or cytological confirmed metastatic disease. Participants must not have received anti-PD-1/PD-L1 targeted therapy.
* Measurable disease by CT or magnetic resonance imaging (MRI) as defined by RECIST V1.1
* Participants must provide archival tumor tissue from the most recent biopsy (≤12 months from screening). If archival tissue is not available, a fresh baseline tumor biopsy that has not been previously irradiated is required for any participant whose tumors are considered accessible and appropriate in the opinion of the investigator.


* Histologically- or cytologically-confirmed advanced stage cHL
* cHL patients that have failed standard of care for R/R disease including prior treatment with BV.
* FDG PET emission tomography avid and bidimensional measurable disease of at least 1.5 cm in longest axis as documented by radiographic technique
* ECOG performance status of ≤ 2
* Participants are required to have tumor tissue, if available, from the most recent biopsy (≤12 months from screening) prior to start of study treatment. If archival tissue is not available, a fresh screening tumor biopsy is required for any participant whose tumors are considered accessible and appropriate in the opinion of the investigator.

* Prior use of any anti-TIGIT mAb.
* Participants with a condition requiring systemic treatment with either corticosteroids (greater than \[\>\]10 mg daily prednisone or equivalent) or other immunosuppressive medications within 14 days of enrollment. Inhaled or topical steroids and adrenal replacement steroid doses \>10 mg daily prednisone or equivalents are permitted in the absence of active immune disease.
* Known hypersensitivity to any excipient contained in the drug formulation of SEA-TGT

* Prior use of any anti-TIGIT mAb.
* Participants with a condition requiring systemic treatment with either corticosteroids (\>10 mg daily prednisone or equivalent) or other immunosuppressive medications within 14 days of enrollment. Inhaled or topical steroids and adrenal replacement steroid doses \>10 mg daily prednisone or equivalents are permitted in the absence of active immune disease.

Exclusion Criteria

* History of another malignancy within 2 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.
* Chemotherapy, radiotherapy, biologics, and/or other antitumor treatment that has not been completed before the first dose of study drug within the timeframe as follows:

* Chemotherapy, small molecule inhibitors, radiation, and/or other investigational anticancer agents (excluding investigational monoclonal antibodies): 2 weeks

* Palliative radiotherapy (≤2 weeks of radiotherapy to non-central nervous system \[CNS\] disease): ≤7 days prior to start of SEA-TGT
* Immune-checkpoint inhibitors: 4 weeks
* Monoclonal antibodies, antibody-drug conjugates (ADC), or radioimmunoconjugates: 4 weeks (2 weeks with documented disease progression)
* T-cell or other cell-based therapies: 12 weeks
* Known CNS metastases

* Participants with a history of CNS metastases are allowed if they have undergone treatment for the CNS disease, symptoms have resolved, and steroids have been discontinued.
* Leptomeningeal involvement by malignant disease is excluded regardless of prior treatment.

* History of another malignancy within 2 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, non-infectious pneumonitis, pulmonary fibrosis, or known history of immune mediated pneumonitis.
* Previous therapy with an anti-PD-1 or anti-PD-L1 inhibitor.
* Chemotherapy, radiotherapy, biologics, and/or other antitumor treatment that has not been completed before the first dose of study drug within the timeframe as follows:

* Chemotherapy, small molecule inhibitors, radiation, and/or other investigational anticancer agents (excluding investigational monoclonal antibodies): 2 weeks

* Palliative radiotherapy (≤2 weeks of radiotherapy to non-CNS disease): ≤7 days prior to start of SEA-TGT.
* Immune-checkpoint inhibitors: 4 weeks
* Monoclonal antibodies, ADC, or radioimmunoconjugates: 4 weeks (2 weeks with documented disease progression)
* T-cell or other cell-based therapies: 12 weeks
* Known active CNS metastases.

* Participants with a history of CNS metastases are allowed if they have undergone treatment for the CNS disease, symptoms have resolved, and steroids have been discontinued.
* Leptomeningeal involvement by malignant disease is excluded regardless of prior treatment.
* Known hypersensitivity to any excipient contained in the drug formulation of SEA-TGT or sasanlimab
* Participants with active known or suspected autoimmune disease or significant autoimmune-related toxicity from prior immuno-oncology-based therapy (prior autoimmune colitis, pneumonitis, transaminitis); Participants with vitiligo, controlled type 1 diabetes mellitus, residual hypothyroidism requiring hormone replacement, or conditions not expected to recur in the absence of an external trigger are permitted to enroll.
* History of interstitial lung disease
* Participants with a condition requiring systemic treatment with either corticosteroids (\>10 mg daily prednisone or equivalent) or other immunosuppressive medications within 14 days of enrollment. Inhaled or topical steroids and adrenal replacement steroid doses \>10 mg daily prednisone or equivalents are permitted in the absence of active immune disease.
* Prior use of any anti-TIGIT mAb


* History of another malignancy within 2 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.
* Chemotherapy, radiotherapy, biologics, and/or other antitumor treatment that has not been completed before the first dose of study drug within the timeframe as follows:

* Chemotherapy, small molecule inhibitors, radiation, and/or other investigational anticancer agents (excluding investigational monoclonal antibodies): 2 weeks

* Palliative radiotherapy (≤2 weeks of radiotherapy to CNS disease): ≤7 days prior to start of SEA-TGT
* Immune-checkpoint inhibitors: 4 weeks
* Monoclonal antibodies, ADC (except brentuximab vedotin), or radioimmunoconjugates: 4 weeks (2 weeks with documented disease progression)
* T-cell or other cell-based therapies: 12 weeks
* Known active CNS involvement by lymphoma
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Seagen Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Andres Forero-Torres, MD

Role: STUDY_DIRECTOR

Seagen Inc.

Locations

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University of Alabama at Birmingham

Birmingham, Alabama, United States

Site Status

Arizona Oncology Associates, PC - HOPE

Tucson, Arizona, United States

Site Status

City of Hope

Duarte, California, United States

Site Status

California Research Institute

Los Angeles, California, United States

Site Status

University of California, San Francisco | HDFCCC - Hematopoietic Malignancies

San Francisco, California, United States

Site Status

Yale Cancer Center

New Haven, Connecticut, United States

Site Status

Johns Hopkins Medical Center

Baltimore, Maryland, United States

Site Status

Maryland Oncology Hematology, P.A.

Rockville, Maryland, United States

Site Status

University of Michigan Comprehensive Cancer Center

Ann Arbor, Michigan, United States

Site Status

Minnesota Oncology Hematology P.A.

Minneapolis, Minnesota, United States

Site Status

Mayo Clinic Rochester

Rochester, Minnesota, United States

Site Status

University of Mississippi Medical Center

Jackson, Mississippi, United States

Site Status

Weill Cornell Medicine

New York, New York, United States

Site Status

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Site Status

Wake Forest Baptist Medical Center / Wake Forest University

Winston-Salem, North Carolina, United States

Site Status

University of Cincinnati Cancer Institute

Cincinnati, Ohio, United States

Site Status

Providence Portland Medical Center

Portland, Oregon, United States

Site Status

University of Pittsburgh Medical Center (UPMC)/Hillman Cancer Center

Pittsburgh, Pennsylvania, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

Texas Oncology - Austin Midtown

Austin, Texas, United States

Site Status

Texas Oncology - Baylor Sammons Cancer Center

Dallas, Texas, United States

Site Status

MD Anderson Cancer Center / University of Texas

Houston, Texas, United States

Site Status

Texas Oncology - Northeast Texas

Tyler, Texas, United States

Site Status

Oncology and Hematology Assoc of SW VA DBA Blue Ridge Cancer Care

Blacksburg, Virginia, United States

Site Status

Virginia Cancer Specialists, PC

Fairfax, Virginia, United States

Site Status

Carbone Cancer Center / University of Wisconsin

Madison, Wisconsin, United States

Site Status

University of Alberta / Cross Cancer Institute

Edmonton, Alberta, Canada

Site Status

University Health Network, Princess Margaret Hospital

Toronto, Other, Canada

Site Status

Institut Gustave Roussy

Villejuif, Other, France

Site Status

Istituto Europeo di Oncologia

Milan, Other, Italy

Site Status

Policlinico Universitario Agostino Gemelli

Rome, Other, Italy

Site Status

Hospital Universitari Vall d'Hebron

Barcelona, Other, Spain

Site Status

L'Institut Catala d'Oncologia

L'Hospitalet de Llobregat, Other, Spain

Site Status

HM Centro Integral Oncologico Clara Campal

Madrid, Other, Spain

Site Status

Sarah Cannon Research Institute UK

London, Other, United Kingdom

Site Status

The Royal Marsden Hospital (Surrey)

Sutton, Other, United Kingdom

Site Status

Countries

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United States Canada France Italy Spain United Kingdom

Other Identifiers

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C5791001

Identifier Type: OTHER

Identifier Source: secondary_id

2019-004748-31

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

SGNTGT-001

Identifier Type: -

Identifier Source: org_study_id

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