Over 230,000 new lung cancer cases are diagnosed every year in the U.S. About 80% of lung
cancers are NSCLC. Most people have a more advanced stage of the disease that doesn t respond
well to standard treatment. Researchers want to see if a combination of drugs may be able to
To find out if LMB-100 followed by pembrolizumab can help tumors to shrink in people with
People ages 18 and older with NSCLC that has not responded to standard therapies
Participants will be screened with:
Tumor sample. If one is not available, they will have a biopsy.
Assessments of ability to perform normal activities
Lung function tests
Blood, heart, and urine tests
CT and PET scans: They will like in a machine that takes pictures of the body.
Participants will take LMB-100 in 21-day cycles for up to 2 cycles. They will take the drug
by injection into an arm vein on days 1, 3, and 5 of each cycle. They will stay in the
hospital 7-10 days each cycle. Then they will get pembrolizumab by injection into an arm vein
every 3 weeks for up to 2 years. They may be able to take pembrolizumab an additional year if
their cancer gets worse.
Participants will have repeats of the screening tests throughout the study.
About 30 days and 90 days after they stop treatment, participants will have follow-up visits.
Then they will have visits every 6-12 weeks. They will be followed for the rest of their life
through phone calls and emails.
Mesothelin is expressed in approximately half of all lung adenocarcinomas.
LMB-100 has demonstrated anti-tumor efficacy against several mesothelin expressing tumor
models including non-small cell lung cancer (NSCLC).- Programmed death ligand 1 (PD-1)
is an Ig superfamily member related to CD28 and CTLA-4 that has been shown to negatively
regulate antigen receptor signaling upon engagement of its ligands.
Pembrolizumab, an IgG4 monoclonal antagonist antibody to PD-1, is FDA approved in the
frontline for advanced non-squamous NSCLC as a single agent with high PD-L1 expression
[tumor proportion score (TPS) >=50%] or in combination with platinum-based doublet
chemotherapy (PD-L1 unselected). It also approved in the second-line for high PDL1
expressing tumors (TPS >=1%).
Combination treatment with LMB-100 plus pembrolizumab results in greater anti-tumor
efficacy in murine lung cancer model.
-To determine the objective response rate of LMB-100 followed by pembrolizumab in the
treatment of subjects with mesothelin-expressing non-squamous non-small cell lung cancer
(NSCLC) previously treated with immune checkpoint inhibitors.
Histologically confirmed locally advanced or metastatic non-squamous, non-small cell
lung cancer lacking an EGFR sensitizing mutation, ALK or ROS1 gene rearrangement and not
amenable to potentially curative surgical resection or chemoradiation.
Tumor mesothelin expression of at least 25% of tumor cells as determined by the
Laboratory of Pathology at the NCI.
Subjects must have at least progressed after one prior platinum-based doublet
chemotherapy AND standard immune checkpoint inhibitor (ICI) with either frontline
single-agent pembrolizumab, or in combination with platinum-based doublet chemotherapy,
or second-line single-agent nivolumab, pembrolizumab, or atezolizumab.
Age >= 18 years.
This is an open-label, single center phase II study of LMB-100 followed by pembrolizumab
in subjects with mesothelin expressing NSCLC who have progressed on standard therapies
Subjects will receive LMB-100 at the single agent MTD (140mg/kg) on days 1, 3 and 5 of a
21-day cycle for up to 2 cycles and pembrolizumab 200 mg on day 1 of cycle 3 of a 21-
day cycle (or cycle 2 if disease progression is observed after 1 cycle) onwards until
disease progression (on or after pembrolizumab) or intolerable toxicity for a maximum of
2 years (unless second course initiated).
The total accrual ceiling for the screening will be set at 100 total patients in order
to treat 23 subjects.
If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.
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