A Study of SGN-ALPV in Advanced Solid Tumors
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05229900 |
Recruitment Status :
Recruiting
First Posted : February 8, 2022
Last Update Posted : March 7, 2023
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This study will test the safety of a drug called SGN-ALPV in participants with solid tumors. It will also study the side effects of this drug. A side effect is anything a drug does to your body besides treating your disease.
Participants will have solid tumor cancer that has spread through the body (metastatic) or cannot be removed with surgery (unresectable).
This study will have three parts. Parts A and B of the study will find out how much SGN-ALPV should be given to participants. Part C will use the dose and schedule found in Parts A and B to find out how safe SGN-ALPV is and if it works to treat solid tumor cancers.
Condition or disease | Intervention/treatment | Phase |
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Ovarian Neoplasms Endometrial Neoplasms Carcinoma, Non-Small-Cell Lung Stomach Neoplasms Uterine Cervical Neoplasms Testicular Neoplasms | Drug: SGN-ALPV | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 285 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1 Study of SGN-ALPV in Advanced Solid Tumors |
Actual Study Start Date : | April 21, 2022 |
Estimated Primary Completion Date : | December 31, 2024 |
Estimated Study Completion Date : | November 30, 2027 |

Arm | Intervention/treatment |
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Experimental: SGN-ALPV
SGN-ALPV monotherapy
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Drug: SGN-ALPV
Given into the vein (IV; intravenously) |
- Number of participants with adverse events (AEs) [ Time Frame: Through 30-37 days after last study treatment, approximately 6 months ]Any untoward medical occurrence in a clinical investigational participant administered a medicinal product and which does not necessarily have a causal relationship with this treatment.
- Number of participants with laboratory abnormalities [ Time Frame: Through 30-37 days after last study treatment, approximately 6 months ]
- Number of participants with dose-limiting toxicities (DLTs) [ Time Frame: Up to 28 days ]
- Number of participants with DLTs by dose level [ Time Frame: Up to 28 days ]
- Incidence of antidrug antibodies (ADAs) [ Time Frame: Through 30-37 days after last study treatment, approximately 6 months ]
- Area under the concentration-time curve (AUC) [ Time Frame: Through 14 days after last study treatment, approximately 6 months ]PK parameter
- Maximum concentration (Cmax) [ Time Frame: Through 14 days after last study treatment, approximately 6 months ]PK parameter
- Time to Cmax (Tmax) [ Time Frame: Through 14 days after last study treatment, approximately 6 months ]PK parameter
- Apparent terminal half-life (t1/2) [ Time Frame: Through 14 days after last study treatment, approximately 6 months ]PK parameter
- Trough concentration (Ctrough) [ Time Frame: Through 14 days after last study treatment, approximately 6 months ]PK parameter
- Objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST v1.1) [ Time Frame: Approximately 2 years ]The proportion of participants with an objective response (OR) per investigator. A participant is determined to have an OR if, based on RECIST v1.1, the subject achieves a complete response (CR) or a partial response (PR) after initiation of treatment and at or prior to the end of treatment (EOT) disease assessment.
- Duration of objective response (DOR) [ Time Frame: Approximately 2 years ]The time from start of the first documentation of objective tumor response (CR or PR) to the first documentation of disease progression (based on radiographic assessments per RECIST v1.1) or death due to any cause.
- Progression-free survival (PFS) [ Time Frame: Approximately 2 years ]The time from start of study treatment to first documentation of disease progression or death due to any cause
- Overall survival (OS) [ Time Frame: Approximately 2 years ]The time from start of study treatment to death due to any cause
- CA-125 response rate according to Gynecological Cancer Intergroup (GCIG) criteria (subjects with ovarian cancer only) [ Time Frame: Approximately 2 years ]The proportion of participants with ovarian cancer who have at least a 50% reduction in CA-125 value from baseline according to GCIG CA-125 criteria
- Combined RECIST/CA-125 overall response rate according to GCIG (subjects with ovarian cancer only) [ Time Frame: Approximately 2 years ]The proportion of participants with ovarian cancer whose best response is a CR or PR according to the GCIG combined RECIST and CA-125 criteria

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: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
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Participants must have one of the following histologically or cytologically confirmed metastatic or unresectable solid tumor types:
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Parts A and B
- Ovarian cancer
- Endometrial cancer
- Non-small cell lung cancer (NSCLC)
- Gastric cancer
- Cervical cancer
- Malignant testicular germ cell tumor (GCT), except for pure teratomas
- Malignant ovarian GCT, except for pure teratomas
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Part C
- High-grade serous ovarian cancer (HGSOC): Participants must have HGSOC which has progressed or relapsed within 6 months after previous platinum containing chemotherapy, received 2 to 4 prior anticancer lines of therapy, and at least 1 line of therapy in the platinum-resistant setting. If eligible at least 1 line of therapy must have contained bevacizumab or a biosimilar to bevacizumab.
- Endometrial Cancer: Participants must have unresectable locally advance or metastatic endometrial carcinoma and have had at least 1 prior line of therapy.
- NSCLC: Participants must have unresectable locally advanced or metastatic NSCLC and have received platinum-based therapy and a PD-(L)1 inhibitor.
- Gastric cancer: Participants must have unresectable locally advanced or metastatic gastric cancer and have received prior platinum and fluoropyrimidine -based chemotherapy
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Participants enrolled in the following study parts should have an appropriate tumor site and agree to a biopsy
- Disease-specific expansion cohorts, subjects 16 onwards: pretreatment biopsy.
- Biology expansion cohort: pretreatment biopsy, on-treatment biopsy during Cycle 1, and end of treatment biopsy.
- Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
- Measurable disease per the RECIST v1.1 at baseline
Exclusion Criteria:
- History of another malignancy within 3 years of first dose of study treatment or any evidence of residual disease from a previously diagnosed malignancy. Exceptions are malignancies with a negligible risk of metastasis or death.
- Known active central nervous system metastases.
- Previous receipt of an MMAE-containing agent or an agent targeting ALPP or ALPPL2.
- Pre-existing neuropathy ≥ Grade 2 per National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0

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): NCT05229900
Contact: Seagen Trial Information Support | 866-333-7436 | clinicaltrials@seagen.com |
United States, California | |
Women's Cancer Care | Recruiting |
Fresno, California, United States, 93710 | |
Contact: Micheal Mott 559-650-4880 mmott@cogi-wcrn.com | |
Principal Investigator: Christopher Perkins | |
United States, Connecticut | |
Yale Cancer Center | Recruiting |
New Haven, Connecticut, United States, 06510 | |
Contact: Yale Cancer Center Ct.Gov Contact yale.ctgov@yale.edu | |
Principal Investigator: Patricia LoRusso | |
United States, Florida | |
Florida Cancer Specialists - Lake Nona | Recruiting |
Wellington, Florida, United States, 33414 | |
Contact: Leslie Hertweck Leslie.Hertweck@SarahCannon.com | |
Principal Investigator: Cesar Perez Batista, MD | |
United States, Michigan | |
START Midwest | Recruiting |
Grand Rapids, Michigan, United States, 49546 | |
Contact: Julie Burns 616-954-5559 julie.burns@startmidwest.com | |
Principal Investigator: Nehal Lakhani, MD, PhD | |
United States, Oklahoma | |
Oklahoma University at Stephenson Cancer Center | Recruiting |
Oklahoma City, Oklahoma, United States, 73104 | |
Contact: Julia Neuenschwander 405-271-8001 ext x48563 Julia-neuenschwander@ouhsc.edu | |
Principal Investigator: Kathleen Moore | |
United States, Utah | |
START Mountain Region | Recruiting |
West Valley City, Utah, United States, 84119 | |
Contact: Amanda Riojas 210-593-5238 amanda.riojas@startsa.com | |
Principal Investigator: Justin Call | |
United States, Virginia | |
Virginia Cancer Specialists | Recruiting |
Fairfax, Virginia, United States, 22031 | |
Contact: Maryanne Poole 703-280-5390 mpoole@nextoncology.com | |
Principal Investigator: Alexander I Spira | |
Canada, Ontario | |
Ottawa Hospital Cancer Centre | Recruiting |
Ottawa, Ontario, Canada, K1H 8L6 | |
Principal Investigator: Arif Awan | |
Spain | |
START Madrid-CIOCC_Hospital HM Sanchinarro | Recruiting |
Madrid, Other, Spain, 28050 | |
Principal Investigator: Maria Jose de Miguel | |
United Kingdom | |
The Royal Marsden NHS Foundation Trust (RM) | Recruiting |
London, Other, United Kingdom, SW3 6JJ | |
Principal Investigator: Anna Minchom | |
Sarah Cannon Research Institute UK | Recruiting |
London, Other, United Kingdom, W1G 6AD | |
Principal Investigator: Elisa Fontana |
Study Director: | Suzanne McGoldrick, MD | Seagen Inc. |
Responsible Party: | Seagen Inc. |
ClinicalTrials.gov Identifier: | NCT05229900 |
Other Study ID Numbers: |
SGNALPV-001 |
First Posted: | February 8, 2022 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 |
Ovarian cancer Endometrial cancer Non-small cell lung cancer NSCLC Gastric cancer Cervical cancer |
Malignant Testicular Germ Cell Tumor Malignant Ovarian Germ Cell Tumor High-grade serous ovarian cancer HGSOC Seattle Genetics |
Neoplasms Carcinoma, Non-Small-Cell Lung Ovarian Neoplasms Stomach Neoplasms Uterine Cervical Neoplasms Endometrial Neoplasms Testicular Neoplasms Carcinoma, Bronchogenic Bronchial Neoplasms Lung Neoplasms Respiratory Tract Neoplasms Thoracic Neoplasms Neoplasms by Site Lung Diseases Respiratory Tract Diseases |
Endocrine Gland Neoplasms Ovarian Diseases Adnexal Diseases Genital Neoplasms, Female Urogenital Neoplasms Endocrine System Diseases Gonadal Disorders Gastrointestinal Neoplasms Digestive System Neoplasms Digestive System Diseases Gastrointestinal Diseases Stomach Diseases Uterine Neoplasms Uterine Cervical Diseases Uterine Diseases |