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A Study of SGN-STNV in Advanced Solid Tumors

Phase 1
Terminated
Conditions
Ovarian Neoplasms
Pseudomyxoma Peritonei
Uterine Cervical Neoplasms
Gastroesophageal Junction Carcinoma
Stomach Neoplasms
Appendiceal Adenocarcinoma
Esophageal Neoplasms
Exocrine Pancreatic Adenocarcinoma
Carcinoma, Non-Small Cell Lung
HER2 Negative Breast Neoplasms
Interventions
Registration Number
NCT04665921
Lead Sponsor
Seagen Inc.
Brief Summary

This trial will look at a drug called SGN-STNV to find out whether it is safe for patients with solid tumors. It will study SGN-STNV to find out what its side effects are. A side effect is anything the drug does besides treating cancer. It will also study how well SGN-STNV works to treat solid tumors.

The study will have two parts. Part A of the study will find out how much SGN-STNV should be given to patients. Part B will use the dose found in Part A to find out how safe SGN-STNV is and if it works to treat certain types of solid tumors.

Detailed Description

The study will include dose escalation (Part A) and dose expansion (Part B), with multiple disease-specific cohorts and a biology cohort in dose expansion. The biology cohort will require additional biopsies. At the completion of dose escalation, up to 5 disease specific expansion cohorts and 1 biology expansion cohort may be activated by the sponsor in consultation with the Safety Monitoring Committee (SMC). Expansion cohorts in Part B will enroll subjects with selected tumors that are eligible for enrollment in Part A. The dose(s) to be examined in Part B will be at or below the maximum tolerated dose and/or the recommended dose determined in Part A. The recommended dose and/or schedule may differ between cohorts.

Recruitment & Eligibility

Status
TERMINATED
Sex
All
Target Recruitment
111
Inclusion Criteria
  • Disease indication

    • Must have disease that is relapsed or refractory or be intolerant to standard-of-care therapies and should have no appropriate standard-of-care therapeutic option.

      • Non-small cell lung cancer (NSCLC)
      • HER2 negative breast cancer
      • Ovarian cancer
      • Cervical cancer
      • Endometrial cancer
      • Esophageal cancer
      • Gastric cancer and GEJ carcinoma
      • Colorectal cancer
      • Exocrine pancreatic adenocarcinoma
      • Appendiceal adenocarcinoma and pseudomyxoma peritonei of unknown origin
  • Participants enrolled in the following study parts should have an appropriate tumor site that satisfies the following criteria:

    • Site has tumor that is not a target lesion and has not been previously irradiated (unless progression has occurred since end of radiotherapy)

    • Site has tumor that is accessible for a minimally invasive biopsy that does not present a significant risk, AND

    • Participant must agree to a biopsy as follows

      • Disease-specific expansion cohorts: pre-treatment biopsy, unless medically infeasible following consultation with the medical monitor
      • Biology expansion cohort: pretreatment biopsy (required) and additional on-treatment biopsy during Cycle 1 (unless medically infeasible following consultation with the medical monitor)
  • Measurable disease per the Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) at baseline

  • An Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1

  • Adequate renal, hepatic, and hematologic function

Exclusion Criteria

  • 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.
  • Known active central nervous system metastases
  • Carcinomatous meningitis
  • Previous receipt of monomethylauristatin E (MMAE)-containing drugs
  • Pre-existing neuropathy ≥ Grade 2 per the National Cancer Institute's Common Terminology Criteria for Adverse Events (NCI CTCAE) v5.0
  • Any uncontrolled ≥ Grade 3 (per the NCI CTCAE, Version 5.0) viral, bacterial, or fungal infection within 2 weeks prior to the first dose of SGN-STNV

There are additional inclusion and exclusion criteria. The study center will determine if criteria for participation are met.

Exclusion Criteria

Not provided

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
SGN-STNVSGN-STNVSGN-STNV monotherapy
Primary Outcome Measures
NameTimeMethod
Incidence of adverse events (AEs)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

To be summarized using descriptive statistics

Incidence of laboratory abnormalitiesThrough 30-37 days following last dose of SGN-STNV; up to approximately 3 years

To be summarized using descriptive statistics

Incidence of dose limiting toxicitiesUp to 28 days

To be summarized using descriptive statistics

Secondary Outcome Measures
NameTimeMethod
Objective response rate (ORR) as assessed by the investigator per RECIST v1.1Up to approximately 3 years

ORR is defined as the proportion of subjects achieving a partial response (PR) or complete response (CR).

Area under the concentration-time curve (AUC)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

Pharmacokinetic (PK) endpoint

Progression-free survival (PFS)Up to approximately 3 years

PFS is defined as the time from the start of any study treatment to first documentation of disease progression or to death due to any cause, whichever comes first.

Overall survival (OS)Up to approximately 3 years

OS is defined as the time from the start of any study treatment to the date of death due to any cause.

Duration of objective response (DOR)Up to approximately 3 years

DOR is defined as the time from start of the first documentation of objective tumor response (CR or PR) to the first documentation of tumor progression or to death due to any cause, whichever comes first.

Time to maximum concentration (Tmax)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

PK endpoint

Incidence of antidrug antibodies (ADA)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

Immunogenicity endpoint

Maximum concentration (Cmax)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

PK endpoint

Trough concentration (Ctrough)Through 30-37 days following last dose of SGN-STNV; up to approximately 3 years

PK endpoint

Trial Locations

Locations (18)

Beth Israel Deaconess Medical Center

🇺🇸

Boston, Massachusetts, United States

The Angeles Clinic and Research Institute

🇺🇸

Los Angeles, California, United States

University of California, San Francisco | HDFCCC - Hematopoietic Malignancies

🇺🇸

San Francisco, California, United States

Shands Cancer Center / University of Florida

🇺🇸

Gainesville, Florida, United States

University of Miami

🇺🇸

Miami, Florida, United States

Dana Farber Cancer Institute

🇺🇸

Boston, Massachusetts, United States

Memorial Sloan Kettering Cancer Center

🇺🇸

New York, New York, United States

University Hospitals Cleveland Medical Center

🇺🇸

Cleveland, Ohio, United States

Magee Womens Hospital of UPMC

🇺🇸

Pittsburgh, Pennsylvania, United States

South Texas Accelerated Research Therapeutics

🇺🇸

San Antonio, Texas, United States

University of Ottawa / Ottawa General Hospital

🇨🇦

Ottawa, Ontario, Canada

University Health Network, Princess Margaret Hospital

🇨🇦

Toronto, Other, Canada

Hospital Universitari Vall d'Hebron

🇪🇸

Barcelona, Other, Spain

The Royal Marsden Hospital (Surrey)

🇬🇧

Sutton, Other, United Kingdom

Istituto Europeo di Oncologia

🇮🇹

Milano, Other, Italy

Oregon Health and Science University

🇺🇸

Portland, Oregon, United States

South Texas Accelerated Research Therapeutics Midwest

🇺🇸

Grand Rapids, Michigan, United States

Institut Gustave Roussy

🇫🇷

Villejuif Cedex, Other, France

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