PRIMARY OBJECTIVE:
I. To evaluate the progression free survival (PFS) of lenvatinib mesylate
(lenvatinib)-pembrolizumab as maintenance therapy in patients with advanced unresectable
pancreatic cancer who have achieved partial response or stable disease following 1st or 2nd
line therapy.
SECONDARY OBJECTIVES:
I. To evaluate the safety and tolerability associated with the combination of
lenvatinib-pembrolizumab as maintenance therapy for patients with advanced unresectable
pancreatic cancer.
II. To evaluate the overall response rate (ORR), including confirmed and unconfirmed,
complete and partial response and duration of response, of patients treated with
lenvatinib-pembrolizumab in the subset of patients with measurable disease.
III. To evaluate if potential gains in PFS translates into an overall survival (OS) benefit
for patients with pancreatic cancer being treated with lenvatinib-pembrolizumab in the
maintenance setting.
EXPLORATORY OBJECTIVES:
I .To investigate whether lenvatinib-pembrolizumab induces measurable immune-related systemic
changes in peripheral blood over the course of therapy by flow cytometry using T cell markers
(e.g. CD4+, CD8+, PD1, TIM-3, LAG-3, TOX nuclear factor).
II. To conduct an exploratory study to identify global changes in expression of tumor-related
genes using needle biopsy samples of PDA tumors obtained prior to and within one week after
the 3rd cycle of pembrolizumab.
OUTLINE:
Patients receive pembrolizumab intravenously (IV) over 30 minutes on day 1 and lenvatinib
mesylate orally (PO) once daily (QD) on days 1-21. Cycles repeat every 21 days in the absence
of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 30 days and then up to 1
year.
Inclusion Criteria:
- Documented informed consent by the participant
- Willingness to provide tissue and blood samples for correlative studies
- Age: >= 18 years
- Eastern Cooperative Oncology Group (ECOG) performance status =< 1
- Must have a confirmed histologic or cytologic diagnosis of advanced unresectable
pancreatic ductal adenocarcinoma (PDA)
- Must have received at least 16 weeks of 1st or 2nd line therapy and achieved partial
response or stable disease (by computed tomography [CT] or magnetic resonance imaging
[MRI]) with no signs of progression within 30 days before start of treatment
- Last chemotherapy treatment must be within 30 days prior to start of treatment
- No prior therapy with an anti-PD-1, anti-PD-L1, or anti PD L2 agent or with an agent
directed to another stimulatory or co-inhibitory T-cell receptor (e.g., CTLA-4, OX 40,
CD137)
- Measurable or evaluable disease according to Response Evaluation Criteria in Solid
Tumors (RECIST) version (v) 1.1. Lesions situated in a previously irradiated area are
considered measurable if progression has been demonstrated in such lesions
- Participants must have recovered from all adverse events (AEs) due to previous
therapies to =< grade 1 or baseline, with the following exception: participants with
=< grade 2 neuropathy are eligible
- Note: Participants who have entered the follow-up phase of an investigational
study may participate as long as it has been 4 weeks after the last dose of the
previous investigational agent
- A male participant must agree to use a contraception of this protocol during the
treatment period and for at least 90 days after the last dose of study treatment and
refrain from donating sperm during this period
- A female participant is eligible to participate if she is not pregnant, not
breastfeeding, and at least one of the following conditions applies:
- Not a woman of childbearing potential (WOCBP) OR
- Females of child-bearing potential must be willing to use effective contraception
during study and for 30 days after the last dose
- Hemoglobin >= 9.0 g/dL or >= 5.6 mmol/L. Criteria must be met without erythropoietin
dependency and without packed red blood cell (pRBC) transfusion within last 2 weeks
(performed within 14 days prior to day 1)
- Absolute neutrophil count (ANC) >= 1,500/mm^3 (performed within 14 days prior to day
1)
- Platelets >= 100,000/mm^3 (performed within 14 days prior to day 1)
- Total serum bilirubin =< 1.5 x upper limit of normal (ULN) OR direct bilirubin =< ULN
for participants with total bilirubin levels > 1.5 x ULN (performed within 14 days
prior to day 1)
- Aspartate Aminotransferase =< 1.5 x ULN or =< 3 x ULN with liver metastases (performed
within 14 days prior to day 1)
- Alanine aminotransferase (ALT) =< 1.5 x ULN or =< 3 x ULN with liver metastases
(performed within 14 days prior to day 1)
- Creatinine =< 1.5 x ULN OR calculated creatinine clearance >= 30 mL/min for
participant with creatinine levels >1.5 x institutional ULN (performed within 14 days
prior to day 1)
- International normalized ratio (INR) or prothrombin time (PT) =< 1.5 x ULN unless
participant is receiving anticoagulant therapy as long as PT or activated partial
thromboplastin time (aPTT) is within therapeutic range of intended use of
anticoagulants (performed within 14 days prior to day 1)
- aPTT =< 1.5 x ULN unless participant is receiving anticoagulant therapy as long as PT
or aPTT is within therapeutic range of intended use of anticoagulants (performed
within 14 days prior to day 1)
- Women of childbearing potential (WOCBP): negative urine or serum pregnancy test
- If the urine test is positive or cannot be confirmed as negative, a serum
pregnancy test will be required
Exclusion Criteria:
- Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy
(in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of
immunosuppressive therapy within 7 days prior to the first dose of study drug
- Dietary/herbal supplements (cannabidiol [CBD] allowed)
- Other investigational products
- Current or planned se of agents contraindicated for use with strong CYP3A4 inducers
- Strong inhibitors or inducers of CYP3A
- Medications with a known potential to prolong the QT/corrected QT (QTc) interval
- Issues with tolerating oral medication (e.g. inability to swallow pills, malabsorption
issues, ongoing nausea or vomiting during screening)
- Uncontrolled blood pressure (systolic blood pressure [BP] > 140 mmHg or diastolic BP >
90 mmHg) in spite of an optimized regimen of antihypertensive medication
- Women who are or are planning to become pregnant or breastfeed
- Known allergy to any of the components within the study agents and/or their excipients
- No other prior malignancy is allowed except for the following: adequately treated
basal cell or squamous cell skin cancer, in situ cervical cancer, adequately treated
stage I or II cancer from which the patient is currently in complete remission, or any
other cancer from which the patient has been disease free for at least two years
- Participants must not have received radiotherapy within 2 weeks of start of study
intervention. Participants must have recovered from all radiation-related toxicities,
not require corticosteroids, and not have had radiation pneumonitis. A 1-week washout
is permitted for palliative radiation (=< 2 weeks of radiotherapy) to non-central
nervous system (CNS) disease
- Participants must not have known active CNS metastases and/or carcinomatous
meningitis. Participants with previously treated brain metastases may participate
provided they are radiologically stable, i.e. without evidence of progression for at
least 4 weeks by repeat imaging (note that the repeat imaging should be performed
during study screening), clinically stable and without requirement of steroid
treatment for at least 14 days prior to first dose of study intervention
- Participants may not be currently participating in or participated in a study of
an investigational agent or has used an investigational device within 4 weeks
prior to the first dose of study intervention
- Intercurrent or historic medical condition that increases subject risk in the opinion
of the Investigator. Eligibility may be revisited for intercurrent medical conditions
once resolution/recovery is deemed adequate by the investigator (e.g. recovery from
major surgery, completion of treatment for severe infection)
- Has received a live vaccine within 30 days prior to the first dose of study drug.
Examples of live vaccines include, but are not limited to, the following: measles,
mumps, rubella, varicella/zoster (chicken pox), yellow fever, rabies, Bacillus
Calmette-Guerin (BCG), and typhoid vaccine. Seasonal influenza vaccines for injection
are generally killed virus vaccines and are allowed; however, intranasal influenza
vaccines (eg, FluMist) are live attenuated vaccines and are not allowed
- Has active autoimmune disease that has required systemic treatment in the past 2 years
(i.e. with use of disease modifying agents, corticosteroids or immunosuppressive
drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid
replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a
form of systemic treatment and is allowed
- Has a history of (non-infectious) pneumonitis that required steroids or has current
pneumonitis
- Has an active infection requiring systemic therapy
- Has a known history of human immunodeficiency virus (HIV) infection
- Has a known history of hepatitis B (defined as hepatitis B surface antigen [HBsAg]
reactive) or known active hepatitis C virus (defined as hepatitis C virus [HCV]
ribonucleic acid [RNA] [qualitative] is detected) infection. Note: no testing for
Hepatitis B and hepatitis C is required unless mandated by local health authority
- Has a known history of active TB (Mycobacterium tuberculosis)
- Has a history or current evidence of any condition, therapy, or laboratory abnormality
that might confound the results of the study, interfere with the subject's
participation for the full duration of the study, or is not in the best interest of
the subject to participate, in the opinion of the treating investigator
- Has known psychiatric or substance abuse disorders that would interfere with
cooperation with the requirements of the trial
- Is pregnant or breastfeeding or expecting to conceive or father children within the
projected duration of the study, starting with the screening visit through 120 days
after the last dose of trial treatment
- Has had an allogenic tissue/solid organ transplant
- Electrolyte abnormalities that have not been corrected
- Significant cardiovascular impairment: history of congestive heart failure greater
than New York Heart Association (NYHA) Class II, unstable angina, myocardial
infarction or stroke within 6 months of the first dose of study drug, or cardiac
arrhythmia requiring medical treatment at Screening
- Bleeding or thrombotic disorders or subjects at risk for severe hemorrhage
- The degree of tumor invasion/infiltration of major blood vessels (e.g. carotid
artery) should be considered because of the potential risk of severe hemorrhage
associated with tumor shrinkage/necrosis following lenvatinib therapy
- Subjects having > 1+ proteinuria on urine dipstick testing unless a 24-hour urine
collection for quantitative assessment indicates that the urine protein is < 1 g/24
hours
- Prospective participants who, in the opinion of the investigator, may not be able to
comply with all study procedures (including compliance issues related to
feasibility/logistics)
