A Safety Study of SGN-LIV1A in Breast Cancer Patients
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ClinicalTrials.gov Identifier: NCT01969643 |
Recruitment Status :
Completed
First Posted : October 25, 2013
Last Update Posted : March 7, 2023
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Condition or disease | Intervention/treatment | Phase |
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HER2 Positive Breast Neoplasms Hormone Receptor Positive Breast Neoplasms Triple Negative Breast Neoplasms HER2 Mutations Breast Neoplasms | Drug: ladiratuzumab vedotin Drug: Trastuzumab | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 290 participants |
Allocation: | Non-Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1, Open-Label, Dose-Escalation Study to Evaluate the Safety and Tolerability of SGN-LIV1A in Patients With Metastatic Breast Cancer |
Actual Study Start Date : | October 22, 2013 |
Actual Primary Completion Date : | February 4, 2023 |
Actual Study Completion Date : | February 4, 2023 |

Arm | Intervention/treatment |
---|---|
Experimental: LV Dose Escalation |
Drug: ladiratuzumab vedotin
LV will be given into the vein (IV; intravenously)
Other Names:
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Experimental: LV + Trastuzumab |
Drug: ladiratuzumab vedotin
LV will be given into the vein (IV; intravenously)
Other Names:
Drug: Trastuzumab Trastuzumab will be given by IV every 3 weeks at a dose of 6 mg/kg (the first dose will be 8 mg/kg)
Other Name: Herceptin |
Experimental: LV Monotherapy
LV will be given at the recommended dose (at or below the monotherapy MTD determined in the LV dose escalation arm).
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Drug: ladiratuzumab vedotin
LV will be given into the vein (IV; intravenously)
Other Names:
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- Incidence of adverse events [ Time Frame: Through 1 month following last dose; up to approximately 2 years ]An AE is any untoward medical occurrence in a patient or clinical investigational subject administered a medicinal product and which does not necessarily have a causal relationship with this treatment.
- Incidence of laboratory abnormalities [ Time Frame: Through 1 month following last dose; up to approximately 2 years ]To be summarized using descriptive statistics.
- Incidence of dose-limiting toxicity (DLT) [ Time Frame: Through 3 weeks after first dose ]
- Blood concentrations of LV and metabolites [ Time Frame: Through 3 weeks after dosing; up to approximately 2 years ]
- Incidence of antitherapeutic antibodies [ Time Frame: Through 1 month following last dose; up to approximately 2 years ]
- Objective response rate (ORR) [ Time Frame: Through 1 month following last dose; up to approximately 2 years ]ORR is defined as the proportion of patients with complete response (CR) or partial response (PR) per RECIST v1.1.
- Duration of response (DOR) [ Time Frame: 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 (clinical progression or progressive disease (PD) per RECIST v1.1).
- Progression-free survival (PFS) [ Time Frame: Up to approximately 8 years ]PFS is defined as the time from start of study treatment to first documentation of tumor progression (clinical progression or PD per RECIST v1.1).
- Overall survival (OS) [ Time Frame: Up to approximately 8 years ]OS is defined as the time from start of study treatment to date of death due to any cause.
- PFS relative to prior therapy [ Time Frame: Up to approximately 8 years ]The PFS ratio is defined for each subject as the ratio of the current PFS and the PFS achieved on their most recent therapy where they experienced progression.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Pathologically confirmed diagnosis of breast cancer with radiographic evidence of incurable, unresectable, locally advanced or metastatic disease (LA/MBC)
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One of the following:
- Part A: Triple-negative disease (ER/PR/HER2-negative) and received at least 2 prior cytotoxic regimens in the incurable, unresectable, LA/MBC setting; or ER-positive and/or PR-positive/HER2-negative disease and received at least 2 prior cytotoxic regimens in the incurable, unresectable, LA/MBC setting and are no longer a candidate for hormonal therapy (not enrolling new patients);
- Part B: Combination Arm: HER2-positive disease and received at least 2 prior cytotoxic regimens in the incurable, unresectable, LA/MBC setting (not enrolling new patients);
- Part C: Triple-negative disease and received 2-4 prior non-hormonally-directed therapies in the MBC setting (not enrolling new patients);
- Part D and Part E (dose-expansion cohort): Triple-negative disease and received 1 prior non-hormonally-directed or cytotoxic therapy in the MBC setting; or
- Part E: HR+(ER-positive and/or PR-positive)/HER2-negative disease who are chemotherapy-eligible and not considered a candidate for further hormonal therapy. Must have received no more than 1 prior non-hormonally-directed or cytotoxic therapy in the LA/MBC setting.
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Part F: All of the following:
- Triple negative breast cancer
- No prior cytotoxic chemotherapy for unresectable locally advanced or metastatic stage disease
- Tumor tissue PD-L1 expression CPS <10 expression
- Parts A, B, C, and D: Newly obtained or archived tumor tissue biopsy, must be collected for central pathology determination of LIV-1 expression
- Parts E and F: Archival or fresh baseline tumor sample is required.
- Measurable disease
- Eastern Cooperative Oncology Group performance status 0 or 1
- Combination Arm: adequate heart function
Exclusion Criteria:
- Pre-existing neuropathy Grade 2 or higher
- Parts A, B, C, and D: Cerebral/meningeal disease that is related to the underlying malignancy and has not been definitively treated. Parts E and F: Known or suspected cerebral/meningeal metastasis that has not been definitively treated.
- Prior treatment with LV or prior treatment with an MMAE-containing therapy
- Combination Arm: hypersensitivity to trastuzumab

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01969643

Study Director: | Brandon Croft, PharmD | Seagen Inc. | |
Study Director: | Zejing Wang, MD, PhD | Seagen Inc. |
Responsible Party: | Seagen Inc. |
ClinicalTrials.gov Identifier: | NCT01969643 |
Other Study ID Numbers: |
SGNLVA-001 |
First Posted: | October 25, 2013 Key Record Dates |
Last Update Posted: | March 7, 2023 |
Last Verified: | March 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Monomethyl auristatin E Antibody-drug conjugate Drug therapy Metastatic LIV-1 protein, human |
Trastuzumab Ladiratuzumab vedotin hLIV22-vcMMAE Seattle Genetics |
Neoplasms Breast Neoplasms Triple Negative Breast Neoplasms Neoplasms by Site Breast Diseases Skin Diseases Trastuzumab |
SGN-LIV1A Antineoplastic Agents, Immunological Antineoplastic Agents Immunoconjugates Immunologic Factors Physiological Effects of Drugs |