PRIMARY OBJECTIVES:
I. Determine the recommended phase 2 dose (RP2D) of CAS3/SS3 when given in combination with
local fixed-dose radiation therapy (RT).
II. Evaluate the safety and feasibility of intratumoral injections of CAS3/SS3 when combined
with local fixed-dose RT, by evaluation of toxicities including: type, frequency, severity,
attribution, time course and duration.
SECONDARY OBJECTIVES:
I. Characterize the clinical activity (overall and per dose level) of CAS3/SS3 through the
assessment of disease response, and response duration. (Clinical) II. Characterize the
biologic activity (overall and per dose level) of CAS3/SS3 when combined with local
fixed-dose RT by assessing. (Biologic [Immunologic Correlative Studies]) IIa. Silencing of
the STAT3 gene and its key downstream genes. IIb. Local and systemic immune responses,
including: evidence/extent of immune cell intratumoral infiltration, immune cell activation
within the tumor and in the peripheral blood, and changes in proinflammatory mediators in
plasma.
OUTLINE:
Patients undergo radiation therapy on days 1 and 2 tumor-bearing lymph node, and receive
CAS3/SS3 intratumorally on days 2, 4, 16, and 18. Patients assigned to dose level 3 also
receive CAS3/SS3 intratumorally on days 9, 11, 23, and 25.
After completion of study treatment, patients are followed up every 3 months.
Inclusion Criteria:
- All subjects must have the ability to understand and the willingness to sign a written
informed consent
- Age 18 and older
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 (corresponds to
Karnofsky Performance Status [KPS] of >= 70)
- Life expectancy greater than 16 weeks
- Relapsed/refractory disease; patients must have failed >= 2 prior systemic therapies
and have no treatment options known to provide clinical benefit
- Biopsy confirmed relapsed or refractory B-cell lymphoma of the following subtypes;
patients with a partial response to a previous treatment are allowed.
- Follicular grade 1 or 2, or 3 marginal zone or small lymphocytic lymphoma
- Diffuse large B-cell lymphoma, non-germinal center B-cell like (GCB) type
determined by immunohistochemistry using Han's algorithm
- Mantle cell lymphoma
- Patients must have at least two separate tumor sites, one of which is at least 2 cm in
diameter and peripherally accessible and amenable for intratumoral injection of
CAS3/SS3 with stabilization by palpation, and the other is at least 1.5 cm in diameter
- Tumor specimens must be available for immunological studies either from a previous
biopsy or a new biopsy obtained before the initiation of the study. Paraffin-embedded
specimens are acceptable
- Required wash out periods for prior therapy:
- Topical therapy: 2 weeks
- Chemotherapy: 4 weeks
- Radiotherapy: 4 weeks
- Other investigational therapy: 4 weeks
- Monoclonal antibody or immunotherapy: 4 weeks
- Targeted therapies: 4 weeks
- Allogeneic transplant: 6 months
- Absolute neutrophil count (ANC) >= 1,000/mm^3
- NOTE: Growth factor is not permitted within 14 days of ANC assessment unless
cytopenia is secondary to disease involvement
- Platelets >= 75,000/mm^3
- NOTE: Platelet transfusions are not permitted within 14 days of platelet
assessment unless cytopenia is secondary to disease involvement
- Hemoglobin >= 8 g/dl
- Total serum bilirubin (mg/dL): =< 1.5 x upper normal limit (ULN)
- Aspartate aminotransferase (AST) < 3 x ULN without liver metastasis and < 5 x ULN with
liver metastasis
- Alanine aminotransferase (ALT) < 3 x ULN without liver metastasis and < 5 x ULN with
liver metastasis
- Adequate renal function as determined by serum creatinine =< 2.0 mg/dL or creatinine
clearance of >= 50 mL/min per the Cockcroft-Gault formula
- International normalized ratio (INR) OR prothrombin (PT) =< 1.5 x ULN
- Activated partial thromboplastin time (aPTT) =< 1.5 x ULN
- Female of childbearing potential: serum pregnancy test
- Cardiac function 12-lead electrocardiogram (ECG) to confirm the absence of clinically
significant arrhythmias
- Left ventricular ejection fraction (LVEF) >= 45%
- Oxygen saturation on room air of >= 92%
- The effects of CAS3/SS3 on the developing 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 or abstinence) prior to study entry and for six months
following duration of study participation. Should a woman become pregnant or suspect
that she is pregnant while participating on the trial, she should inform her treating
physician immediately
Exclusion Criteria:
- Patients may not be receiving any other investigational agents, or concurrent
biological, chemotherapy, or radiation therapy
- Current use of anticoagulant therapy (aspirin [ASA] =< 325 mg per day allowed) or
history of significant bleeding diathesis
- Treatment with corticosteroids or other systemic immunosuppressive medication (e.g.,
methotrexate, rapamycin) within 28 days of study treatment. Note: patients with
adrenal insufficiency may take up to 7.5 mg of prednisone or equivalent daily. Topical
and inhaled corticosteroids in standard doses are allowed
- Patients with rapid progression of disease requiring immediate anti lymphoma therapy
- Patients should not have any uncontrolled illness including ongoing or active
infection
- Pregnant or lactating women are excluded from this study because CAS3/SS3is an agent
with the potential for teratogenic or abortifacient effects. Because there is an
unknown but potential risk for adverse events in nursing infants secondary to
treatment of the mother with CAS3/SS3, breastfeeding should be discontinued if the
mother is treated with CAS3/SS3
- Prior malignancy (active within 5 years of screening) except basal cell or completely
excised non-invasive squamous cell carcinoma of the skin, or in situ squamous cell
carcinoma of the cervix
- Pre-existing autoimmune or antibody mediated disease including: systemic lupus
erythematosus, rheumatoid arthritis, multiple sclerosis, Sjogren's syndrome,
autoimmune thrombocytopenia, Addison's disease, but excluding the presence of
autoantibodies without clinical autoimmune disease
- History of inflammatory bowel disease (e.g., Crohn's disease or ulcerative colitis),
celiac disease, or other chronic gastrointestinal conditions associated with diarrhea,
or current acute colitis of any origin
- History of diverticulitis (even a single episode) or evidence of diverticulitis at
baseline, including evidence limited to computed tomography (CT) scan only. Note:
diverticulosis is not an exclusion criterion per se
- Graft versus host disease
- Severe psoriasis
- Active thyroiditis
- History of uveitis
- Known history of human immunodeficiency virus (HIV) with detectable viral load or
patients with acquired immuno-deficiency syndrome (AIDS) are excluded
- Known active or chronic viral hepatitis B or C infection
- Patients with active infection or with a fever > 38.5 degrees Celsius (C) within three
days prior to the first scheduled treatment
- Active central nervous system (CNS) metastases
- History of allergic reactions attributed to compounds of similar composition to
agatolimod sodium (PF-3512676) or tremelimumab
- History of allergic reactions attributed to compounds of similar chemical or biologic
composition to CAS3/SS3
- Significant cardiovascular disease (i.e. New York Heart Association [NYHA] >= class 3
congestive heart failure; myocardial infarction within the past 6 months; unstable
angina; coronary angioplasty within the past 6 months; uncontrolled atrial or
ventricular cardiac arrhythmias)
- Any other condition that would, in the Investigator's judgment, contraindicate the
patient's participation in the clinical study due to safety concerns with clinical
study procedures
- 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)
