Randomized Phase III Trial of Chemotherapy vs. Pembrolizumab Plus Chemotherapy for Relapsed/Refractory Classical Hodgkin Lymphoma
Overview
- Phase
- Phase 3
- Intervention
- Autologous Hematopoietic Stem Cell Transplantation
- Conditions
- Recurrent Classic Hodgkin Lymphoma
- Sponsor
- National Cancer Institute (NCI)
- Primary Endpoint
- Event free survival (EFS)
- Status
- Withdrawn
- Last Updated
- 2 years ago
Overview
Brief Summary
This phase III trial compares chemotherapy versus an immune checkpoint inhibitor drug called pembrolizumab plus chemotherapy in treating patients with classical Hodgkin lymphoma that has come back (relapsed) or that does not respond to treatment (refractory). The usual approach for patients with classical Hodgkin lymphoma is treatment with standard chemotherapy, including drugs that are Food and Drug Administration (FDA)-approved. If this treatment puts a patient into remission, high dose chemotherapy and stem cell transplant may be used to increase the likelihood of a cure. Hodgkin lymphoma is capable of inhibiting the immune system from killing it. Pembrolizumab is a checkpoint inhibitor that may be able to stop this inhibition, allowing the immune system to attack the lymphoma.
Detailed Description
PRIMARY OBJECTIVE: I. To assess the 2-year event free survival (EFS) of patients treated with pembrolizumab added to chemotherapy versus chemotherapy alone, in patients with relapsed/refractory (R/R) classical Hodgkin's lymphoma (cHL) who are intended to receive salvage therapy followed by high dose chemotherapy and autologous stem cell transplant (HDT-ASCT). PRIMARY IMAGING OBJECTIVE: I. To assess the diagnostic performance of baseline total metabolic tumor volume (TMTV) in predicting response (complete remission \[CR\] + partial remission \[PR\] versus \[vs\] no response) at pre-transplant/post-salvage for each arm separately and overall. SECONDARY OBJECTIVES: I. To assess the 2-year progression free survival (PFS) and overall survival (OS) in the transplanted population. II. To assess the complete remission (CR) rate to salvage therapy. III. To assess the CR rate post HDT-ASCT. IV. To assess the post HDT-ASCT partial remission (PR) to CR conversion rate. SECONDARY IMAGING OBJECTIVES: I. To assess the % change in TMTV (delta TMTV) from baseline to pre-transplant/post-salvage in predicting response (CR+PR vs no response) at pre-transplant/post-salvage for each arm separately and overall. II. To assess baseline TMTV and delta TMTV in predicting EFS/OS for each arm separately and overall. OUTLINE: Patients are randomized to 1 of 2 arms. ARM A: SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide intravenously (IV), carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a positron emission tomography (PET)/computed tomography (CT) scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve stable disease (SD) or progressive disease (PD) come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo radiation therapy (RT) as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated. ARM B: SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated. All patients undergo CT scans during follow-up.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Patient must be \>= 5 years of age and =\< 75 years of age
- •Patient must have relapsed/refractory classical Hodgkin lymphoma (R/R cHL) after frontline (first line of chemotherapy) as evidenced by Fludeoxyglucose F-18 (FDG) avid on PET scan. If regimen is adjusted based on PET2 results or toxicity during frontline therapy, this will only be considered one line of therapy. Prior checkpoint inhibitor is completed \> 6 months prior to randomization
- •Patients \>= 18 years of age must have an Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-
- •Pediatric patients (16-17 years of age) must have a Karnofsky performance level \>= 50%. Pediatric patients (5-15 years of age) must have a Lansky performance level \>= 50
- •Patient must be deemed fit for high dose chemo and autologous stem cell transplant
- •Patient must have the ability to understand and the willingness to sign a written informed consent document. Pediatric patients (\< 18 years of age) and patients with impaired decision-making capacity (IDMC) who have a legally authorized representative (LAR) or caregiver and/or family member available will also be considered eligible. Child assent must be obtained as appropriate in accordance with institutional guidelines
- •Absolute neutrophil count (ANC) \>= 1000/mcL (must be obtained =\< 7 days prior to randomization)
- •If disease includes marrow involvement or hypersplenism, please reference the below revised requirement:
- •ANC \>= 500/mcL
- •Platelets \>= 75,000/mcL (must be obtained =\< 7 days prior to randomization)
Exclusion Criteria
- •Patient must not be pregnant or breast-feeding due to the potential harm to an unborn fetus and possible risk for adverse events in nursing infants with the treatment regimens being used.
- •All patients of childbearing potential must have a blood test or urine study within 14 days prior to randomization to rule out pregnancy.
- •A patient of childbearing potential is defined as anyone, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has achieved menarche at some point, 2) has not undergone a hysterectomy or bilateral oophorectomy; or 3) has not been naturally postmenopausal (amenorrhea following cancer therapy does not rule out childbearing potential) for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
- •Patients of childbearing potential and/or sexually active patients must not expect to conceive or father children by using an accepted and effective method(s) of contraception or by abstaining from sexual intercourse for the duration of their participation in the study. Additionally, patients of childbearing potential must continue contraception measures for 4 months after the last dose of pembrolizumab, 6 months after the last dose of vinorelbine and for 3 months after the last dose of bendamustine. Male patients must continue contraception measures for 6 months after the last dose of ifosfamide and for 3 months after the last dose of vinorelbine. Patients must also not breastfeed while on study treatment and for 4 months after the last dose of Pembrolizumab and 9 days after the last dose of vinorelbine
- •Patient must not have a history of (non-infectious) pneumonitis/interstitial lung disease that required steroids or have current pneumonitis/interstitial lung disease
- •Patient must not have the following symptomatic autoimmune disorders: rheumatoid arthritis, systemic progressive sclerosis (scleroderma), systemic lupus erythematosus, Sjögren's syndrome, or autoimmune vasculitis (e.g., Wegener's Granulomatosis), or conditions of immunosuppression that require current ongoing treatment with systemic corticosteroids (or other systemic immunosuppressants), including oral steroids (i.e., prednisone, dexamethasone). Patients who discontinue use of these classes of medication for at least 2 weeks prior to randomization eligible if, in the judgment of the treating physician investigator, the patient is not likely to require resumption of treatment with these classes of drugs during the study.
- •Replacement doses of steroids for patients with adrenal insufficiency are allowed.
- •Additionally, patients must not have an autoimmune disease that is felt by the treating physician to have the potential to be exacerbated by checkpoint inhibition
Arms & Interventions
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Autologous Hematopoietic Stem Cell Transplantation
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Bendamustine
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Brentuximab Vedotin
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Carboplatin
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Computed Tomography
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Etoposide
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Gemcitabine
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Ifosfamide
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Pegylated Liposomal Doxorubicin Hydrochloride
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Positron Emission Tomography
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Radiation Therapy
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Transplant Conditioning
Arm A (chemotherapy regimen, HDT-ASCT)
SALVAGE THERAPY: Patients receive 1 of 3 chemotherapy regimens as clinically indicated: 1) ifosfamide IV, carboplatin IV, and etoposide IV; 2) gemcitabine IV, vinorelbine IV, and pegylated liposomal doxorubicin IV; or 3) brentuximab vedotin IV and bendamustine IV. Patients then undergo a PET/CT scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Vinorelbine
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Autologous Hematopoietic Stem Cell Transplantation
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Bendamustine
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Brentuximab Vedotin
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Carboplatin
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Computed Tomography
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Etoposide
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Gemcitabine
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Ifosfamide
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Pegylated Liposomal Doxorubicin Hydrochloride
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Pembrolizumab
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Positron Emission Tomography
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Radiation Therapy
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Transplant Conditioning
Arm B (chemotherapy regimens+pembrolizumab, HD-ASCT)
SALVAGE THERAPY: Patients receive pembrolizumab IV plus 1 of 3 chemotherapy regimens specified in Arm A as clinically indicated. Patients then undergo a PET scan. Patients who achieve a CR or PR proceed to HDT-ASCT. Patients who achieve SD or PD come off study treatment. HDT-ASCT: Patients undergo ASCT. Patients may also receive a standard preparative chemotherapy regimen as clinically indicated. Patients who achieve PR prior to ASCT may also undergo RT as clinically indicated. Patients who went into ASCT with PR also undergo a PET/CT scan 30 days post-transplant. MAINTENANCE THERAPY: Patients may receive brentuximab vedotin IV as clinically indicated.
Intervention: Vinorelbine
Outcomes
Primary Outcomes
Event free survival (EFS)
Time Frame: Time from randomization to the earlier of events listed in description field, assessed up to 15 years
Events include: failure to achieve partial remission (PR) or complete remission (CR) to salvage chemotherapy, failure to achieve a CR post high dose chemotherapy and autologous stem cell transplant (HDT-ASCT), progression, receipt of unplanned radiation or brentuximab vedotin maintenance, or death. Patients who have not experienced any of these events will be censored at the date they are last known to be progression free. Kaplan-Meier method will be used to estimate EFS, including medians and confidence intervals. Comparison of EFS between treatment arms will be conducted based on intent-to-treat principle using a one-sided stratified log-rank test with the stratification factors.
Lugano-based response
Time Frame: Pre-transplant/post-salvage therapy
Will be assessed using positron emission tomography/computed tomography (PET/CT) scan with Deauville score. Will assess the diagnostic performance of baseline metabolic tumor volume (TMTV) in predicting response (CR+PR vs no response) at pre-transplant/post-salvage, overall and by study arm. Diagnostic performance of baseline TMTV will be assessed using area under the receiver operator characteristic curve (ROC AUC) analysis, where the reference standard is pre-transplant/post-salvage response (CR/PR).
Secondary Outcomes
- Baseline TMTV and delta TMTV(Baseline and pre-transplant/post-salvage therapy)
- Percentage change in TMTV (delta TMTV)(Baseline to pre-transplant/post-salvage therapy)