Brentuximab Vedotin and Gemcitabine Hydrochloride in Treating Younger Patients With Relapsed or Refractory Hodgkin Lymphoma

Study Overview
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Brief Summary
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This phase I/II trial studies the side effects and the best dose of brentuximab vedotin when given together with gemcitabine hydrochloride and to see how well they work in treating younger patients with Hodgkin lymphoma that has returned or does not respond to treatment. Monoclonal antibodies, such as brentuximab vedotin, may find cancer cells and help kill them. Drugs used in chemotherapy, such as gemcitabine hydrochloride, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving brentuximab vedotin together with gemcitabine hydrochloride may kill more cancer cells.

Detailed Description
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PRIMARY OBJECTIVES: I. To estimate the maximum tolerated dose (MTD) and/or recommended Phase 2 dose of brentuximab vedotin in combination with gemcitabine administered every three weeks to children with relapsed or primary refractory Hodgkin lymphoma (HL). II. To define and describe the toxicities of brentuximab vedotin in combination with gemcitabine administered on this schedule. III. To determine the complete response (CR) rate after treatment with four cycles of gemcitabine with brentuximab vedotin among patients with relapsed or refractory HL. SECONDARY OBJECTIVES: I. To preliminarily define the antitumor activity of brentuximab vedotin in combination with gemcitabine within the confines of a Phase 1 study. II. To describe the overall response rate (ORR) after 4 cycles of therapy among patients with relapsed or refractory HL. III. To describe the proportion of patients with HL able to mobilize an adequate yield of cluster of differentiation (CD) 34+ stem cells after gemcitabine with brentuximab vedotin. IV. To describe the relationship between disease response among patients with HL and changes in thymus and activation-regulated chemokine (TARC) during treatment, and to determine if specific micro ribonucleic acid (miRNA) profiles correlate with response to treatment. V. To describe the frequency of the Fc gamma receptor IIIa (FcγRIIIa)-158 valine (V)/phenylalanine (F) polymorphism among patients who experience pulmonary toxicity on this protocol. OUTLINE: This is a phase I, dose-escalation study of brentuximab vedotin followed by a phase II study. (Phase I completed as of amendment 4) Patients receive brentuximab vedotin intravenously (IV) over 30 minutes on day 1 and gemcitabine hydrochloride IV over 100 minutes on days 1 and 8. Treatment repeats every 21 days for up to 15 more courses in the absence of disease progression or unacceptable toxicity. Patients with CR after any course may go off protocol therapy for stem cell transplant. After completion of study treatment, patients are followed up at 3, 6, 9, 12, 18, 24, 36, 48, and 60 months.

Official Title
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A Phase 1/2 Study of Brentuximab Vedotin (SGN35) in Combination With Gemcitabine for Pediatric and Young Adult Patients With Relapsed or Refractory Hodgkin Lymphoma

Conditions
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Recurrent Adult Hodgkin Lymphoma, Recurrent Childhood Hodgkin Lymphoma, Refractory Childhood Hodgkin Lymphoma

Intervention / Treatment
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* Drug: Brentuximab Vedotin
* Drug: Gemcitabine Hydrochloride


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients must have had histologic verification of the malignancy at original diagnosis; patients must have histologic verification of recurrent Hodgkin disease at the time of relapse; no additional biopsy is required for patients with primary refractory disease (i.e. no prior CR) PARTS A AND B: Patients with Hodgkin lymphoma (HL) are eligible for both the phase 1 and 2 portions, if they are in one of the following categories: Primary refractory disease (i.e. no prior CR) Very early relapse (< 6 months from the end of initial therapy, including chemotherapy ± radiation) Advanced stage (III or IV) at diagnosis who relapse less than one year from the end of initial therapy Note that patients with low-stage disease (IA or IIA) at initial diagnosis, who were treated with radiation alone or fewer than four cycles of chemotherapy will NOT be eligible Patients must have measurable disease, documented by clinical and radiographic criteria Patients must have a life expectancy of >= 8 weeks (>= 56 days) Karnofsky >= 50% for patients > 16 years of age and Lansky >= 50 for patients =< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score Patients must have fully recovered from the acute toxic effects of all prior anti-cancer chemotherapy At least 14 days after the last dose of myelosuppressive chemotherapy (28 days if prior nitrosourea); Note: cytoreduction with hydroxyurea can be initiated and continued for up to 24 hours prior to the start of therapy At least 14 days after the last dose of a long-acting growth factor (e.g. Neulasta) or 7 days for short-acting growth factor; for agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur; the duration of this interval must be discussed with the study chair At least 7 days after the last dose of a biologic agent; for agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur; the duration of this interval must be discussed with the study chair At least 42 days after the completion of any type of immunotherapy, e.g. tumor vaccines At least 3 half-lives of the antibody after the last dose of a monoclonal antibody At least 14 days after local palliative radiation therapy (XRT) (small port); at least 150 days must have elapsed if prior total body irradiation (TBI), craniospinal XRT or if >= 50% radiation of pelvis; at least 42 days must have elapsed if other substantial bone marrow (BM) radiation Patients with prior autologous or allogeneic stem cell transplant (SCT) are excluded from this study At least 28 days must have elapsed since the most recent dose of bleomycin, to allow adequate time to detect evidence of bleomycin-related pulmonary toxicity PART A: FOR PATIENTS WITH KNOWN BONE MARROW INVOLVEMENT (Completed as of Amendment 4) Peripheral absolute neutrophil count (ANC) >= 1000/uL Platelet count >= 100,000/uL (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment) PART B: FOR PATIENTS WITHOUT KNOWN BONE MARROW INVOLVEMENT Peripheral absolute neutrophil count (ANC) >= 750/uL Platelet count >= 75,000/uL (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment) Patients with lymphoma metastatic to bone marrow who have granulocytopenia, anemia, and/or thrombocytopenia will be eligible for study but not evaluable for hematologic toxicity (in Part A, there will be a maximum of one per cohort); such patients must meet the blood counts as in Part A (may receive transfusions provided they are not known to be refractory to red cell or platelet transfusions); if dose-limiting hematologic toxicity is observed, all subsequent patients enrolled in Part A must be evaluable for hematologic toxicity Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 ml/min/1.73 m^2 OR A serum creatinine based on age/gender as follows: =< 0.6 mg/dL (for 1 to < 2 years of age) =< 0.8 mg/dL (for 2 to < 6 years of age) =< 1.0 mg/dL (for 6 to < 10 years of age) =< 1.2 mg/dL (for 10 to < 13 years of age) =< 1.4 mg/dL (for females >= 13 years of age) =< 1.5 mg/dL (for males 13 to < 16 years of age) =< 1.7 mg/dL (for males >= 16 years of age) Bilirubin (sum of conjugated + unconjugated) =< 1.5 x upper limit of normal (ULN) for age Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) < 2.5 x upper limit of normal (ULN) for age; for the purpose of this study, the ULN for SGPT is 45 U/L Serum albumin >= 2 g/dL No evidence of dyspnea at rest, no exercise intolerance due to pulmonary insufficiency, and a pulse oximetry > 92% while breathing room air Forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) > 60% by pulmonary function test (PFT), unless due to large mediastinal mass from HL; carbon monoxide diffusion capacity (DLCO), FEV1, and forced vital capacity all > 50% predicted value; Note: pulmonary function testing is not required for children < 8 years old, or for any child who is developmentally unable to comply with pulmonary function testing Patients with seizure disorder may be enrolled if on anticonvulsants and well controlled Nervous system disorders (Common Terminology Criteria for Adverse Events [CTCAE] version [v] 4) resulting from prior therapy must be < grade 2 Exclusion Criteria: Pregnant or breast-feeding women will not be entered on this study; pregnancy tests must be obtained in girls who are post-menarchal; males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method during protocol therapy and for at least 30 days after the last dose of brentuximab vedotin; abstinence is an acceptable method of birth control Concomitant medications Patients receiving stable or decreasing corticosteroids are not eligible for other concurrent conditions (e.g. asthma, autoimmune diseases, rash, documented adrenal insufficiency) are eligible for this study Patients who are currently receiving another investigational drug are not eligible Patients who are currently receiving other anti-cancer agents are not eligible Patients who have an uncontrolled infection are not eligible Patients with an immunodeficiency that existed prior to diagnosis, such as primary immunodeficiency syndromes, organ transplant recipients and children on current systemic immunosuppressive agents are not eligible Patients known to be positive for human immunodeficiency virus (HIV) are not eligible Prior therapy Patients with prior exposure to brentuximab vedotin are not eligible; NOTE: prior exposure to gemcitabine is NOT an exclusion criterion Patients who have undergone prior autologous or allogeneic SCT are not eligible Patients with HL who were stage IA or IIA at initial diagnosis and treated with either radiation alone or < 4 cycles of chemotherapy are not eligible Patients who have received a prior solid organ transplantation are not eligible Patients with known hypersensitivity to Escherichia coli (E.coli)-derived proteins, filgrastim, or any component of filgrastim are not eligible Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible All patients and/or their parents or legal guardians must sign a written informed consent All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Ages Eligible for Study
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Minimum Age: 13 Months
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Treatment (brentuximab vedotin, gemcitabine hydrochloride)<br>Patients receive brentuximab vedotin IV over 30 minutes on day 1 and gemcitabine hydrochloride IV over 100 minutes on days 1 and 8. Treatment repeats every 21 days for up to 15 more courses in the absence of disease progression or unacceptable toxicity. Patients with CR after any course may go off protocol therapy for stem cell transplant. | Drug: Brentuximab Vedotin<br>* Given IV<br>* Other names: SGN-35;Drug: Gemcitabine Hydrochloride<br>* Given IV<br>* Other names: LY188011;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Maximum Tolerated Dose (MTD) for Brentuximab Vedotin | MTD was determined as the maximum dose at which fewer than one-third of patients experience Dose Limiting Toxicities (DLT) as assessed by National Cancer Institute (NCI) CTCAE v 4.0 during Cycle 1 of therapy. Gemcitabine was administered on days 1 and 8 of a 21 day cycle at a fixed dose. Brentuximab vedotin was investigated at a starting dose of 1.4 mg/kg administered on day 1 and escalated if tolerated. | During cycle 1 of protocol therapy (21 days) | 
| Adverse Events Graded According to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.0 | The number of eligible patients assigned to receive brentuximab vedotin in combination with gemcitabine that experienced CTC Version 4, grade 3 or higher adverse events during Phase 1 and Phase 2. | 13 months from first dose | 
| The Number of Patients With Relapsed or Refractory HL Who Achieved Complete Response (CR) | The number of patients who experienced complete Response (CR) within the first four cycles. By modern response criteria, those with partial response (PR) or stable disease with all target lesions with Deauville scores <=3 after cycle 4 are also considered as CR. Patients were assessed after treatment with four cycles of gemcitabine with brentuximab vedotin. CR was only reported for Dose level 2 across both phases of study. | After 4 cycles (21 days per cycle) of protocol therapy | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Patients Who Achieved Overall Response (OR) as Measured by Complete Response (CR) and Partial Response (PR) | The percentage of patients who experienced complete Response (CR) within the first four cycles.By modern response criteria, those with partial response (PR) or stable disease with all target lesions with Deauville scores <=3 after cycle 4 are also considered as CR. Patients were assessed after treatment with four cycles of gemcitabine with brentuximab vedotin. CR was only reported for Dose level 2 across both phases of study. | After 4 cycles (21 days per cycle) of protocol therapy | 
| The Number of Patients Who Had Successful Peripheral Blood Stem Cell (PBSC) Collection | Successful PBSC collection was defined as a collection of more than 2x10^6 CD34 positive cells. | From 1 to 5 cycles | 
| Plasma Level of Thymus and Activation-Regulated Chemokine (TARC) | Limit to 41 evaluable patients who received dose 1.8 mg/kg | From baseline to time prior to cycle 2 | 
| Correlation Between Micro Ribonucleic Acid (miRNA) and Disease Response to Protocol Treatment | Limit to 41 evaluable patients who received dose 1.8 mg/kg | From the end of first dose to the end of last dose (Up to 13 Months) | 
| Number of Patients With FcyRIIIa-158 V/F (Valine/Phenylalanine) Polymorphism | Among patients who received 1.8mg/kg dose, the frequency of the FcγRIIIa-158 V/F polymorphism are described. | From the end of first dose to the end of last dose (Up to 13 Months) | 
| The Number of Patients Who Had Disease Response Assessed by Deauville Scales Among Those in Phase I With Dose Level 2. | The Deauville five-point scale was used to assess the number of participants with complete response (CR) and partial response (PR). A lower score indicates a better outcome. Scores of 1-3 represent CR and 4-5 represent PR. | Up to 13 months from first dose |