This phase II trial studies how well giving cyclophosphamide and anti-thymocyte globulin together followed by peripheral blood stem cell transplant (PBSCT) and mycophenolate mofetil works in treating patients with systemic scleroderma (SSc). Stem cells are collected from the patient's blood and stored prior to treatment. To store the stem cells patients are given colony-stimulating factors, such as filgrastim (G-CSF) or chemotherapy (cyclophosphamide) to help stem cells move from the bone marrow to the blood so they can be collected and stored. After storage, patients are then given high-dose chemotherapy, cyclophosphamide, and immunosuppression with anti-thymocyte globulin to suppress the immune system to prepare for the transplant. The stem cells are then returned to the patient to replace the blood-forming cells that were destroyed by the chemotherapy and immunosuppression. After the stem cells have "engrafted" and have matured enough to support the immune system at approximately 2-3 months, patients are given a medication called mycophenolate mofetil (MMF) or Myfortic. This medication is given to prevent worsening or reactivation of SSc and is referred to as maintenance therapy.
OUTLINE: STEM CELL MOBILIZATION AND PREPARATION: Patients receive filgrastim subcutaneously (SC) on mobilization days 1-4 followed by apheresis until a target dose of CD34+ cells \>= 2.5 x 10\^6/kg are collected. Patients difficult to mobilize with filgrastim alone receive cyclophosphamide intravenously (IV) or \*plerixafor subcutaneously (SC) on mobilization days 1-2 and filgrastim SC on mobilization days 5-7. HDIT CONDITIONING: Patients receive high-dose cyclophosphamide IV over 1-2 hours on days -5 to -2 and anti-thymocyte globulin IV on days -5, -3, -1, 1, 3, and 5. TRANSPLANTATION: Patients undergo autologous PBSCT on day 0. MAINTENANCE THERAPY: Beginning 2-3 months after transplant, patients receive mycophenolate mofetil orally (PO) twice daily (BID) for 2 years. NOTE: \*Plerixafor is an alternative to the cyclophosphamide based mobilization. After completion of study treatment, patients are followed at 1 month, weeks 12 and 26, and then annually for 5 years.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
21
Given IV
Undergo autologous PBSCT
Given IV
Given SC
Correlative studies
Given PO
Undergo autologous PBSCT
Given SC
Ancillary studies
Ancillary studies
City of Hope Comprehensive Cancer Center
Duarte, California, United States
UCLA / Jonsson Comprehensive Cancer Center
Los Angeles, California, United States
University of Colorado
Denver, Colorado, United States
Colorado Blood Cancer Institute
Denver, Colorado, United States
Boston Medical Center
Boston, Massachusetts, United States
Boston University School of Medicine
Boston, Massachusetts, United States
University of Michigan Comprehensive Cancer Center
Ann Arbor, Michigan, United States
Duke University Medical Center
Durham, North Carolina, United States
M D Anderson Cancer Center
Houston, Texas, United States
The University of Texas Health Science Center, Houston
Houston, Texas, United States
...and 2 more locations
EFS of Patients Undergoing Transplant
Event Free Survival (EFS) was defined as survival without meeting the protocol defined endpoint of organ injury (kidney injury requiring renal replacement dialysis for \>6 months, sustained LVEF \<30%, or sustained decline of FVC \>20%).
Time frame: At 5 years
All-cause Mortality
Defined as any death.
Time frame: At 5 years
The Number of Participants With Stable or Improved LVEF
By echocardiogram, left ventricle ejection fraction (LVEF) greater than or equal to 30% for greater than or equal to 3 months
Time frame: From baseline to year 5
Number of Participants Requiring Dialysis
Measured by requiring chronic dialysis greater than or equal to 6 months after transplant or required kidney transplant.
Time frame: From baseline to year 5
The Number of Participants With Disease Progression
Chronic renal dysfunction requiring dialysis greater than or equal to 6 months post transplant or requiring kidney transplant, sustained by echo LVEJF \<30% for at least 3 months post transplant, or sustained greater than or equal to 3 months decrease of FVC on pulmonary function test (PFT) \> 20% post transplant.
Time frame: baseline to year 5
The Number of Participants Who Completed ALL Health Care Utilization as Assessed by UCSD Healthcare Utilization Surveys
UCSD healthcare utilization is a self-report instrument that asks the patient about outpatient and inpatient visits, prescription and non-prescription medications, any surgeries, and major medical expenses during the last 3 months.
Time frame: From baseline to 5 years
The Median SHAQ Score
Scleroderma Health Assessment Questionnaire (SHAQ) is a self reported questionnaire with 8 domains including the following scales: pain, patient global assessment, vascular digital ulcers, lung involvement, and gastrointestinal involvement. The SHAQ is a quality of life measure. Each question is scored from 0 (defined as without difficulty), to 3 (defined as unable to do). Some domains are visual analog scales that are measured first and then changed to the 0-3 scale. The individual scores are combined and divided by 8. A higher score indicates worse functionality and changes in the SHAQ is measured as medium change from baseline. The reported medium change can range from -3 to 3. A negative medium change indicates a better outcome.
Time frame: Baseline to year 4
The Number of Participants With Improvement in Pulmonary Function
Outcome measure was assessed as the number of participants who had greater than or equal to 3 months a \> 10% improvement in predicted FVC or a \> 15% improvement in DLCO.
Time frame: From baseline to year 5
The Number of Participants With Significant Infectious Complications
Infections of grade 3 or above
Time frame: Mobilization to Day + 100 post transplant
The Number of Participants With Non-progression Mortality
deaths without relapse of disease
Time frame: Baseline to year 5
The Number of Participants Who Survived
Time frame: Baseline to year 5
The Number of Participants Who Had Regimen-related Toxicities
Defined as adverse events (AEs) \>= Grade 3 and assessed by the investigator as 1 of the following: unrelated, unlikely, or possibly related to treatment; probably related to treatment; definitely related to treatment. The number of participants that experienced Grade 3 or higher adverse events is reported.
Time frame: Baseline to 1 year post-transplant, grade 3 or higher adverse events
The Median Time of Initiation of Disease-modifying Antirheumatic Drugs (DMARDS) for Relapse After Transplant
The time in months from transplant to starting new therapy not MMF maintenance for relapse disease.
Time frame: Transplant to year 5
Median Time to Treatment Failure
Time to treatment failure is defined as death or initiation of disease modifying antirheumatic drug (DMARD).
Time frame: From transplant (day 0) to death or disease progression to year 5
The Number of Participants With Treatment-related Mortality
Defined by death occurring at any time after start of mobilization procedure to day +90 after autologous HCT and definitely or probably resulting from treatment given in the study.
Time frame: Baseline to Day 90
The Number of Participants Who Completed ALL Work Productivity Survey (WPS)
The first question assesses employment status, type of job for the employed (non-manual, manual or mixed manual/non-manual) and the status of those unemployed (homemaker, retired, student, unable to work due to SSc, unable to work due to non-SSc health problems, or other, i.e. volunteer). The next 3 questions apply only to employed patients and assess absenteeism (full days of work missed due to SSc), presenteeism (days with work productivity reduced by greater than or equal to 50%), and how much SSc interfered with work productivity on a scale of 0-10.
Time frame: Baseline to year 5
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