PRIMARY OBJECTIVE:
I. To determine the rate of complete remission (CR) with polatuzumab vedotin plus rituximab,
cyclophosphamide, doxorubicin hydrochloride, and prednisone (R-CHP) in patients with newly
diagnosed previously untreated double or triple hit lymphoma as measured by positron emission
tomography (PET)-defined CR rate using the modified Lugano response criteria at the time of
primary response assessment (6-8 weeks after cycle 6 day 1 or last dose of study medication).
PRIMARY OBJECTIVE:
I. To determine the rate of complete remission (CR) with polatuzumab vedotin plus rituximab,
cyclophosphamide, doxorubicin hydrochloride, and prednisone (R-CHP) in patients with newly
diagnosed previously untreated double or triple hit lymphoma as measured by positron emission
tomography (PET)-defined CR rate using the modified Lugano response criteria at the time of
primary response assessment (6-8 weeks after cycle 6 day 1 or last dose of study medication).
SECONDARY SAFETY OBJECTIVE:
I. To evaluate the safety and tolerability of the combination of polatuzumab vedotin (PoV)
plus R-CHP as defined by Common Terminology Criteria for Adverse Events (CTCAE) 5.0.
SECONDARY EFFICACY OBJECTIVES:
I. To assess the progression free survival (PFS) with PoV plus R-CHP in the above-mentioned
patient population.
II. To assess the overall survival (OS) with PoV plus R-CHP in the above-mentioned patient
population.
III. To assess the overall response rate (ORR; complete response [CR] or partial response
[PR]) at the time of primary response assessment, based on modified Lugano PET-computed
tomography (CT) criteria, as determined by the investigator.
IV. To assess the duration of response (DOR) to PoV plus R-CHP based on PET-CT, as determined
by the investigators in the above-mentioned patient population.
EXPLORATORY OBJECTIVES:
I. To explore the relationship between CD79b expression and response to treatment with PoV
plus R-CHP.
II. To explore the relationship between MYC expression and response to treatment with PoV
plus R-CHP.
III. To explore polatuzumab vedotin treatment on Myc protein expression.
OUTLINE:
Patients receive prednisone orally (PO), prednisolone intravenously (IV), or
methylprednisolone IV on days 1-5. Patients also receive rituximab IV, polatuzumab vedotin IV
over 30-90 minutes, cyclophosphamide IV, and doxorubicin hydrochloride IV on day 1. Treatment
repeats every 21 days for up to 6 cycles in the absence of disease progression or
unacceptable toxicity.
After completion of study treatment, patients are followed up every 3 months for 12 months.
Inclusion Criteria:
- Signed informed consent form (ICF)
- Previously untreated patients with diffuse large B-cell lymphoma (DLBCL) as determined
by local pathology. World Health Organization (WHO) histologies will include:
- Double hit lymphoma (DHL) or triple hit lymphoma (THL) confirmed by fluorescence
in situ hybridization (FISH) testing by local pathology (defined as MYC and BCL2
and/or BCL6 rearrangements)
- High grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements
- Availability of archival formalin-fixed paraffin-embedded (FFPE) tissue blocks or 15
unstained slides serial sections (3-5 um in thickness) prior to study enrollment. The
pathology report must be available for review and a tissue block sent for
retrospective central confirmation of diagnosis. If central confirmation is unable to
be performed on submitted material, stained slides used for diagnosis and/or
additional tumor tissue specimens may also be requested
* For clarification: Availability of tumor sample must be verified prior to cycle 1,
day 1 (C1D1) however treatment can commence prior to completion of central review
- Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
- Life expectancy of at least 24 weeks
- At least one bi-dimensionally measurable lesion > 1.5 cm in its longest dimension as
measured by CT or magnetic resonance imaging (MRI)
- Ability and willingness to comply with the study protocol procedures
- Left ventricular ejection fraction (LVEF) >= 45% on cardiac multiple-gated acquisition
(MUGA) scan or cardiac echocardiogram (ECHO)
- Hemoglobin >= 8.0 g/dL without packed RBC transfusion during 14 days before first
treatment (unless due to underlying disease, as established by extensive bone marrow
involvement or due to hypersplenism secondary to the involvement of the spleen by
DLBCL per the investigator)
- Absolute neutrophil count (ANC) >= 1,000/uL (unless due to underlying disease, as
established by extensive bone marrow involvement or due to hypersplenism secondary to
the involvement of the spleen by DLBCL per the investigator)
- Platelet count >= 75,000/uL (unless due to underlying disease, as established by
extensive bone marrow involvement or due to hypersplenism secondary to the involvement
of the spleen by DLBCL per the investigator)
- For women of childbearing potential: agreement to remain abstinent (refrain from
heterosexual intercourse) or use contraceptive methods that result in a failure rate
of < 1% per year during the treatment period and for at least 12 months after the last
dose of study treatment
- A woman is considered to be of childbearing potential if she is post-menarcheal,
has not reached a postmenopausal state (>= 12 continuous months of amenorrhea
with no identified cause other than menopause), and has not undergone surgical
sterilization (removal of ovaries and/or uterus)
- Examples of contraceptive methods with a failure rate of < 1% per year include
bilateral tubal ligation, male sterilization, hormonal contraceptives that
inhibit ovulation, hormone-releasing intrauterine devices, and copper
intrauterine devices
- Women must refrain from donating eggs during the same period
- The reliability of sexual abstinence should be evaluated in relation to the
duration of the clinical trial and the preferred and usual lifestyle of the
patient. Periodic abstinence (e.g., calendar, ovulation, symptothermal, or
post-ovulation methods) and withdrawal are not acceptable methods of
contraception
- For women of childbearing potential, a negative serum pregnancy test result within 7
days prior to commencement of dosing. Women who are considered not to be of
childbearing potential are not required to have a pregnancy test
- For men: agreement to remain abstinent (refrain from heterosexual intercourse) or use
a condom, and agreement to refrain from donating sperm, as defined below:
* With female partners of childbearing potential or pregnant female partners, men must
remain abstinent or use a condom during the treatment period and for at least 5 months
after the last dose of polatuzumab vedotin, 3 months after the last dose of rituximab,
and for at least 6 months after the last dose of cyclophosphamide to avoid exposing
the embryo for the duration of the pregnancy. Men must refrain from donating sperm
during this same period
- Periodic abstinence (e.g., calendar, ovulation, symptothermal, or postovulation
methods) and withdrawal are not acceptable methods of contraception. Male patients
considering preservation of fertility should bank sperm before study treatment
- CRITERIA FOR TISSUE SUBMISSION:
- Eligible patients must have available at the study site a representative
formalin-fixed, paraffin-embedded tumor specimen that enabled the definitive diagnosis
of DLBCL
- The specimen must contain adequate evaluable tumor cells (>= 20% for excisional
biopsy and >= 50% if sample is a core biopsy) to enable relevant biomarker
analysis
- A tissue block (preferred) or 15 serial, freshly cut, unstained slides plus punch
biopsy of the tissue block accompanied by an associated pathology report will be
requested. Punch biopsy is required only with the slide submission. Cytological
or fine-needle aspiration samples are not acceptable
- If the archival tissue is unavailable or insufficient on the basis of the above
criteria, the patient may still be eligible if the patient is willing to provide
tissue from a pretreatment core or excisional/incisional biopsy of the tumor.
Cytological or fine-needle aspiration samples are not acceptable. The sample
should be shipped according to instructions provided in the laboratory manual.
Tissue collected on study will not be returned to sites. If needed, additional
slides from previously collected samples may be requested. Cases received from
each of the participating institutes should be histological confirmed according
to the 2016 WHO classification of tumors of hematopoietic and lymphoid neoplasm.
The evaluation process by immunohistochemistry (IHC) and fluorescent in situ
hybridization (FISH) requires the possession of representative amount of tissues
in a paraffin embedded block to be sent to the primary testing institution
(Karmanos Cancer Center, Detroit, Michigan). Shipped slides should be placed in
proper containers to avoid breakage during shipping. Blocks of paraffin embedded
tissue or slides should be sent with a tracking number the address. In addition,
the participation institution should call the laboratory at 313-576-8351 (Julie
Boerner) for any sample that they ship and provide tracking number
Exclusion Criteria:
- Contraindication to any of the individual components of R-cyclophosphamide,
doxorubicin hydrochloride, oxaliplatin, prednisone (CHOP) or any component of PoV,
including prior receipt of anthracyclines or history of severe allergic or
anaphylactic reactions to humanized or murine monoclonal antibodies (MAbs) (or
recombinant antibody-related fusion proteins) or known sensitivity or allergy to
murine products
- Contraindication to rituximab or prior administration of an anti CD 20 antibody
- Treatment with radiotherapy, chemotherapy, immunotherapy, immunosuppressive therapy,
or any investigational agent for the purposes of treating cancer prior to cycle 1 day
1 with the following exceptions:
- Glucocorticoid treatment required for lymphoma symptom control prior to the start
of study treatment, prednisone 100 mg or equivalent can be given for a maximum of
13 days as a prephase treatment, with all tumor assessments completed prior to
starting prednisone
- One dose of prophylactic intrathecal chemotherapy with methotrexate
- Grade 3b follicular lymphoma
- History of transformation of indolent disease to DLBCL
- Primary mediastinal (thymic) large B-cell lymphoma
- Burkitt lymphoma
- Primary or secondary central nervous system (CNS) lymphoma (primary or secondary
involvement), primary effusion DLBCL, and primary cutaneous DLBCL
- Current grade 2 peripheral neuropathy per Common Terminology Criteria for Adverse
Events (CTCAE) 5.0
- History of other malignancy that could affect compliance with the protocol or
interpretation of results. Exceptions include, but are not limited to:
- Patients with a history of curatively treated basal or squamous cell carcinoma of
the skin, in situ carcinoma of the cervix or ductal carcinoma in situ of the
breast at any time prior to the study are eligible
- A patient with any other malignancy that has been treated with surgery alone with
curative intent and the malignancy has been in remission without treatment for >=
3 years prior to enrollment is eligible
- Patients with low-grade, early-stage prostate cancer with no requirement for
therapy at any time prior to study are eligible
- Evidence of significant, uncontrolled concomitant diseases that could affect
compliance with the protocol or interpretation of results, including significant
cardiovascular disease (such as New York Heart Association class III or IV cardiac
disease, myocardial infarction within the last 6 months, unstable arrhythmias, or
unstable angina) or significant pulmonary disease (including obstructive pulmonary
disease and history of bronchospasm)
- History or presence of an abnormal electrocardiogram (ECG) that is clinically
significant in the investigator's opinion, including complete left bundle branch
block, second- or third-degree heart block
- Known active bacterial, viral, fungal, mycobacterial, parasitic, or other infection
(excluding fungal infections of nail beds) at study enrollment or any major episode of
infection requiring treatment with intravenous (IV) antibiotics or hospitalization
(relating to the completion of the course of antibiotics) within 4 weeks prior to
cycle 1 day 1
- Patients with clinical suspicion of active or latent tuberculosis (to be confirmed by
a positive interferon gamma release assay)
- Positive test results for chronic hepatitis B virus (HBV) infection (defined as
positive hepatitis B surface antigen [HBsAg] serology)
* Patients with occult or prior HBV infection (defined as negative HBsAg and positive
hepatitis B core antibody [HBcAb]) may be included if HBV deoxyribonucleic acid (DNA)
polymerase chain reaction (PCR) is undetectable, provided that they are willing to
undergo DNA testing on day 1 of every cycle and monthly for at least 12 months after
the last cycle of study treatment. Patients who have protective titers of hepatitis B
surface antibody (HBsAb) after vaccination or prior but cured hepatitis B are eligible
- Positive test results for hepatitis C virus (HCV) antibody
* Patients who are positive for HCV antibody are eligible only if PCR is negative for
HCV ribonucleic acid (RNA)
- Known history of human immunodeficiency virus (HIV) seropositive status
* For patients with unknown HIV status, HIV testing will be performed at screening
- Vaccination with a live vaccine within 28 days prior to treatment
- Recent major surgery (within 6 weeks before the start of cycle 1 day 1) other than for
diagnosis
- Women who are pregnant or lactating or who intend to become pregnant within a year of
the last dose of study treatment
- Patients with a history of progressive multifocal leukoencephalopathy
- Creatinine > 1.5 x ULN or a measured creatinine clearance < 40 mL/min (unless abnormal
laboratory values are due to underlying lymphoma per the investigator)
- Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 2.5 x ULN (unless
abnormal laboratory values are due to underlying lymphoma per the investigator)
- Total bilirubin >= 1.5 x ULN (unless abnormal laboratory values are due to underlying
lymphoma per the investigator)
* Patients with documented Gilbert disease may be enrolled if total bilirubin is =< 3
x ULN
- International normalized ratio (INR) or prothrombin time (PT) > 1.5 x ULN in the
absence of therapeutic anticoagulation (unless abnormal laboratory values are due to
underlying lymphoma per the investigator)
- Partial thromboplastin time (PTT) or activated partial thromboplastin time (aPTT) >
1.5 x ULN in the absence of a lupus anticoagulant (unless abnormal laboratory values
are due to underlying lymphoma per the investigator)
- Any other diseases, metabolic dysfunction, physical examination finding, or clinical
laboratory finding giving reasonable suspicion of a disease or condition that
contraindicates the use of an investigational drug or that may affect the
interpretation of the results or render the patient at high risk from treatment
complications
