A Study of CTX-009 (ABL001) in Combination With Irinotecan or Paclitaxel in Advanced or Metastatic Solid Tumor Patients
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ClinicalTrials.gov Identifier: NCT04492033 |
Recruitment Status :
Recruiting
First Posted : July 30, 2020
Last Update Posted : June 30, 2022
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
P1b: Advanced Solid Tumors P2: Biliary Tract Cancer | Drug: CTX-009 (ABL001) Drug: Paclitaxel Drug: Irinotecan | Phase 1 Phase 2 |
Phase 1b Study:
Indication of phase 1b study is the advanced or metastatic solid tumors (including, but not limited to, colorectal cancer, gastric cancer, and ovarian cancer).
Phase 2 Study:
Indication of phase 2 study is unresectable advanced, metastatic or recurrent biliary tract cancer (BTC) (including intrahepatic cholangiocarcinoma, extrahepatic cholangiocarcinoma, gallbladder cancer, and ampullary carcinoma).
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 92 participants |
Allocation: | Non-Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1b/2a Multi-center Study to Assess the Safety, Tolerability, Pharmacokinetics of CTX-009 (ABL001) in Combination With Irinotecan or Paclitaxel in Patients With Advanced or Metastatic Solid Tumors |
Actual Study Start Date : | June 22, 2020 |
Estimated Primary Completion Date : | August 31, 2024 |
Estimated Study Completion Date : | July 31, 2025 |

Arm | Intervention/treatment |
---|---|
Experimental: CTX-009 (ABL001) and Paclitaxel (P1b) |
Drug: CTX-009 (ABL001)
CTX-009 (ABL001) will be administered biweekly. Drug: Paclitaxel Paclitaxel will be administered weekly. |
Experimental: CTX-009 (ABL001) and Irinotecan (P1b)
1 cycle = 4weeks
|
Drug: CTX-009 (ABL001)
CTX-009 (ABL001) will be administered biweekly. Drug: Irinotecan Irinotecan will be administered biweekly. |
Experimental: CTX-009 (ABL001) and Paclitaxel (P2)
1 cycle = 4weeks
|
Drug: CTX-009 (ABL001)
CTX-009 (ABL001) will be administered biweekly. Drug: Paclitaxel Paclitaxel will be administered weekly. |
- P1b: Proportion of subjects with Dose-Limiting Toxicity (DLT) [ Time Frame: From Day 1 until disease progression or Day 28, whichever came first ]Number of subjects who experience DLT events during 28 days after first administration of CTX-009 (ABL001) and Irinotecan/Paclitaxel, divided by the number of DLT-evaluable subjects
- P2: Objective response rate (ORR) of CTX-009 (ABL001) in combination with paclitaxel in patients with BTC [ Time Frame: Up to approximately 24 months ]The proportion of subjects whose best overall response (BOR) is assessed to be complete response (CR) or partial response (PR) as per Independent Radiology Center's review
- Adverse Events (AEs) [ Time Frame: Up to approximately 24 months ]Severity of AEs will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0
- Pharmacokinetics (PK) of CTX-009 (ABL001) [ Time Frame: Up to approximately 24 months ]Serum concentrations of CTX-009 (ABL001) will be collected and analyzed to evaluate the PK of CTX-009 (ABL001)
- Objective response rate (ORR) [ Time Frame: Up to approximately 24 months ]Proportion of subject with best overall response of complete response (CR) or partial response (PR) as per investigator's review
- Disease control rate (DCR) [ Time Frame: Up to approximately 24 months ]Proportion of subjects with a best overall response of complete response (CR), partial response (PR) or stable disease (SD)
- Time to treatment failure (TTF) [ Time Frame: Up to approximately 24 months ]Time interval from 1st administration of CTX-009 (ABL001) to the time of disease progression or discontinuation of CTX-009 (ABL001) due to whatever reason, whichever comes first
- Duration of response (DOR) [ Time Frame: Up to approximately 24 months ]Time interval from first occurrence of a documented objective response to the time of disease progression
- Progression-free survival (PFS) [ Time Frame: Up to approximately 24 months ]The time from the initiation of treatment to the first radiologic assessment that confirms progression of tumor or to death
- P2: Survival rate [ Time Frame: 6 months and 12 months ]The proportion of subjects who have survived at 6 months and 12 months from the initiation of treatment
- P2: Overall survival (OS) [ Time Frame: Up to approximately 24 months ]Time from the initiation of treatment to death

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Ages Eligible for Study: | 19 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- P1b only: Patients with histologically or cytologically confirmed metastatic or unresectable advanced solid tumors
- P2 only: Patients with histologically or cytologically confirmed unresectable advanced, metastatic, or recurrent biliary tract cancers (including intrahepatic cholangiocarcinoma, extrahepatic cholangiocarcinoma, gallbladder cancer, ampullary carcinoma)
- P2 only: Patients who have shown disease progress or recurrence of disease after receiving first-line or second-line systemic chemotherapy, including treatment with gemcitabine in combination with a platinum agent
- Patients aged 19 years or older
- At least one lesion measurable defined by response evaluation criteria in solid tumors (RECIST) version 1.1.
- Life expectancy ≥ 12 weeks
- ECOG performance status 0 or 1
- Women of childbearing potential must have a negative pregnancy test outcome
- Patients must provide written informed consent to voluntary participation in this study
Key Exclusion Criteria:
- History of hypersensitivity reactions to any of the components of the investigational product or other drugs of the same class (humanized/human monoclonal antibody) and irinotecan or paclitaxel
- Less than 4 weeks have elapsed since a surgery
- History of cardiac illness: New York Heart Association (NYHA) class ≥ II congestive heart failure (CHF), uncontrolled hypertension, hypertension crisis, pulmonary hypertension, myocardial infarction, uncontrolled arrhythmia, unstable angina
- Persistent, clinically significant NCI-CTCAE v5.0 Grade ≥ 2 toxicities from the previous anticancer therapy
- Severe infections or major and unhealed injury (active ulcer, untreated fracture)
- Symptomatic or uncontrolled central nervous system (CNS) metastasis
- Pregnant or lactating women or patients planning to become pregnant during the study
- Participation in another clinical trial within 30 days prior to initiation of study treatment and received an investigational drug treatment
- Administration of antiplatelets or anticoagulants within 2 weeks prior to screening
- Requiring continuous treatment with systemic NSAIDs or systemic corticosteroids
- HIV or other severe diseases that warrant the exclusion from this study

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): NCT04492033
Contact: SeungJi Yoo | +82-2-527-5413 | SeungJi.Yoo@handok.com | |
Contact: HyunJoo Son | +82-2-527-5257 | HyunJoo.Son@handok.com |
Korea, Republic of | |
Seoul National University Bundang Hospital | Recruiting |
Seongnam-si, Korea, Republic of | |
Contact: Jin Won Kim | |
Contact: Keun-Wook Lee | |
Asan Medical Center | Recruiting |
Seoul, Korea, Republic of | |
Contact: Kyu-Pyo Kim | |
Samsung Medical Center | Recruiting |
Seoul, Korea, Republic of | |
Contact: Joon Oh Park | |
Contact: Jeeyun Lee | |
Seoul National University Hospital | Recruiting |
Seoul, Korea, Republic of | |
Contact: Do-Yeon Oh (Coordinating Investigator) |
Responsible Party: | Handok Inc. |
ClinicalTrials.gov Identifier: | NCT04492033 |
Other Study ID Numbers: |
ABL001-P1bC CTX-009-001 ( Other Identifier: Compass Therapeutics ) |
First Posted: | July 30, 2020 Key Record Dates |
Last Update Posted: | June 30, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
VEGF DLL4 Solid Tumors Bispecific antibody anti-angiogenic |
Biliary Tract Neoplasms Neoplasms Digestive System Neoplasms Neoplasms by Site Biliary Tract Diseases Digestive System Diseases Paclitaxel Irinotecan Antineoplastic Agents, Phytogenic |
Antineoplastic Agents Tubulin Modulators Antimitotic Agents Mitosis Modulators Molecular Mechanisms of Pharmacological Action Topoisomerase I Inhibitors Topoisomerase Inhibitors Enzyme Inhibitors |