Phase 2
N=14
Mesothelin-Targeted Immunotoxin LMB-100 Alone or in Combination With Nab-Paclitaxel in People With Previously Treated Metastatic and/or Locally Advanced Pancreatic Ductal Adenocarcinoma and Mesothelin Expressing Solid Tumors
Neoplasms · Pancreatic Neoplasms
Bottom Line
View on ClinicalTrials.gov: NCT02810418 ↗Enrolled (actual)
14
Serious AEs
37.5%
Results posted
Feb 2021
Primary outcome: Primary: Objective Response (OR) (Partial Responses + Complete Responses) in Phase 2 Subjects of Short Infusion LMB-100+ Nab-paclitaxel — 1 Participants
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- LMB-100 (Drug); Nab-Paclitaxel (Drug); Mesothelin Expression (Device)
- Age
- Adult, Older Adult · 18+ yrs
- Sex
- All
- Sponsor
- National Cancer Institute (NCI)
- Primary completion
- Jan 2019
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Objective Response (OR) (Partial Responses + Complete Responses) in Phase 2 Subjects of Short Infusion LMB-100+ Nab-paclitaxel |
1 | — |
| PRIMARY Maximum Tolerated Dose (MTD) of Short Infusion LMB-100 + Nab Paclitaxel |
65 | — |
| PRIMARY Maximum Tolerated Dose (MTD) of Continuous Infusion LMB-100 |
100 | — |
| SECONDARY Progression Free Survival (PFS) |
NA; NA; NA; NA; NA; NA | — |
| SECONDARY Overall Survival (OS) |
202; 160; 89; 167 | — |
| SECONDARY Proportion of Participants Disease Control Rate (DCR) at End of Treatment (EOT) |
0.07; 0.07; 0; 0; 0; 0 | — |
| SECONDARY Number of Participants With an Objective Response (OR) (Partial Responses + Complete Responses) in Phase 1 Arm A1 |
0; 1 | — |
| SECONDARY Number of Participants With an Objective Response (OR) (Partial Response + Complete Response) in Phase 1, Arm B |
0; 0; 0 | — |
| SECONDARY Number of Participants With Adverse Events Attributed to LMB-100 |
0; 0; 0; 0; 0; 1 | — |
| SECONDARY Number of Participants With Serious and Non-serious Adverse Events Assessed by the Common Terminology Criteria for Adverse Events (CTCAE v4.0). |
6; 8; 6; 6; 3; 6 | — |
Summary
Background:
LMB-100 is a man-made protein designed to kill cancer cells. LMB-100 targets a cancer marker called mesothelin. Mesothelin is found on the surface of many different tumors, including pancreatic cancer, but is made by a very small number of normal tissues. Other cancers that make mesothelin include mesothelioma, cholangiocarcinoma, thymic carcinoma, ovarian, lung, gastric, endometrial, cervical, and ampullary cancers. After binding to the mesothelin on tumors, LMB-100 can attack and kill cancer cells. Researchers want to see how well it works when given with and without nab-paclitaxel, a drug which treats pancreatic cancer.
Objectives:
Arm A- To find a safe dose of LMB-100 with a fixed standard dose of nab-paclitaxel in people with advanced pancreatic cancer. To see how well the combination of the two drugs reduce tumor size.
Arm B- To find a safe dose of LMB-100 when it is given as a continuous infusion over several days.
Eligibility:
Arm A- Adults age 18 and older with advanced pancreatic cancer that has worsened after anti-cancer therapy.
Arm B- Adults age 18 and older with advanced pancreatic cancer, mesothelioma or other solid tumor that makes mesothelin that has worsened after anti-cancer therapy
Design:
Participants will be screened with medical history and physical exam. They will give blood, urine, and tissue samples. They will have scans and x-rays.
During each 21-day cycle:
* For Arm A
* Participants will get LMB-100 by an intravenous (IV) catheter on days 1, 3, and 5. This is a tube inserted in a vein, usually in the arm.
* Participants will get nab-paclitaxel by IV on days 1 and 8.
* For Arm B
* Participants will get LMB-100 by an IV catheter as a continuous infusion beginning on day 1 and continuing for 2-4 days
* Some participants will also get nab-paclitaxel by IV on days 1 and 8.
All participants will get this combination for up to 2 cycles or until their disease worsens or they have intolerable side effects.
Participants will have blood and urine tests and scans throughout the study.
Participants will have a safety follow-up visit 3-6 weeks after treatment ends. If their disease remains stable or improves, they will be scanned every 6 weeks until their disease gets worse. Even if their disease gets worse, they or their doctor will be called to talk about their cancer status....
Eligibility Criteria
- INCLUSION CRITERIA:
- For participants who will be receiving nab-paclitaxel (all arms except Phase I Arm B Single Agent Lead-in)
- Histologically confirmed recurrent, advanced or metastatic pancreatic ductal adenocarcinoma as determined by National Cancer Institute (NCI) Laboratory of Pathology.
- No treatment with paclitaxel or nab-paclitaxel within 4 months prior to initiation of study therapy
- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-1.
- Adequate hematological function: neutrophil count of greater than or equal to 1.0 x 10(9) cells/L, platelet count of greater than or equal to 95,000/microliters, hemoglobin greater than or equal to 9 g/dL
- Measurable disease as per the Response Evaluation Criteria in Solid Tumors (RECIST) Criteria v 1.1
- For participants who will NOT receive nab-paclitaxel (Arm B1 Single Agent Lead-in only)
- Histologically confirmed solid tumor malignancy for which no curative therapy exists with at least 25% of tumor cells expressing mesothelin as determined by NCI Laboratory of Pathology. Determination can be made using archival tumor tissue or fresh biopsy. Subjects with epithelioid mesothelioma and pancreatic adenocarcinoma are automatically eligible and are not required to have this test.
- ECOG performance status (PS) 0-2.
- Adequate hematological function: neutrophil count of greater than or equal to 1.0 x 10(9) cells/L, platelet count of greater than or equal to 85,000/microliters, hemoglobin greater than or equal to 8.5 g/dL
- Measurable and/or evaluable disease as per the RECIST Criteria v 1.1
- For all arms of the protocol
- Participants must have received at least one prior chemotherapy regimen for their disease.
- Age greater than or equal to 18 years. Because no dosing or adverse event data are currently available on the use of LMB-100 in combination with nab-paclitaxel in persons 50%
- Must have an ambulatory oxygen saturation of > 88% on room air
- The effects of LMB-100 alone or in combination with nab-paclitaxel on the developing human fetus are unknown. For this reason women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry until 3 months the last dose of study therapy. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately.
- Ability of participant to understand and the willingness to sign a written informed consent document.
EXCLUSION CRITERIA
- Exclusion criteria for all study arms
- Known or clinically suspected central nervous system (CNS) 2.1.2.1 primary tumors or metastases including leptomeningeal metastases. History or clinical evidence of CNS metastases unless they have been previously treated, are asymptomatic, and have had no requirement for steroids or enzyme-inducing anticonvulsants in the last 14 days.
- Evidence of significant, uncontrolled concomitant diseases which could affect compliance with the protocol or interpretation of results, including significant pulmonary disease other than that related to the primary cancer, uncontrolled diabetes mellitus, and/or significant cardiovascular disease (such as New York Heart Association Class III or IV cardiac disease, myocardial infarction within the last 6 months, unstable arrhythmias, unstable angina, or clinically significant pericardial effusion)
- Any known diagnoses, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition (other than pancreatic adenocarcinoma) that would contraindicate the use of an investigational drug, interfere with tumor measurement or lead to an expected life expectancy of less than 6 months as judged by the investigator
- Active or uncontrolled infections.
- Live attenuated vaccinations within 14 days prior to treatment
- Dementia or altered mental status that would
Data sourced from ClinicalTrials.gov (NCT02810418). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.