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Reduced Intensity Conditioning for Hemophagocytic Syndromes or Selected Primary Immune Deficiencies (BMT CTN 1204)

Reduced-Intensity Conditioning for Children and Adults With Hemophagocytic Syndromes or Selected Primary Immune Deficiencies (RICHI) (BMT CTN #1204)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01998633
Acronym
RICHI
Enrollment
47
Registered
2013-12-02
Start date
2013-12-31
Completion date
2016-12-31
Last updated
2022-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Active Epstein-Barr Virus Infection, Chronic Granulomatous Disease, Hemophagocytic Lymphohistiocytosis, HIGM-1, IPEX, Leukocyte Adhesion Deficiency

Keywords

Hemophagocytic lymphohistiocytosis, Chronic Active EBV, Chronic Granulomatous Disease, Hyperimmunoglobulin M Syndrome (Hyper IGM), Leukocyte Adhesion Deficiency, IPEX, Hematopoietic Stem Cell Transplant (HSCT), Non-Myeloablative Transplant (NST), Reduced-Intensity Conditioning (RIC)

Brief summary

HLH, HLH-related disorders, Chronic Granulomatous (CGD), HIGM1, Immune dysregulation, polyendocrinopathy, enteropathy, and X-linked inheritance (IPEX) and severe LAD-I represent primary immune disorders that are typically fatal without Hematopoietic Cell Transplant (HCT). However, transplant is often complicated by inflammation, infection and other co-morbidities. In addition, these disorders have been shown to be cured with partial chimerism, making them an ideal target for the use of reduced intensity approaches, where a portion of patients may not achieve full donor chimerism, but instead achieve stable mixed chimerism. Reduced-intensity conditioning strategies have demonstrated improved survival with decreased Treatment Related Mortality (TRM) in institutional series for patients with HLH (Cooper et al., 2006; Marsh et al., 2010; Marsh et al., 2011). However, graft loss and unstable chimerism remain challenges. An institutional case series from Cincinnati Children's Hospital demonstrated full or high-level chimerism and improved durable engraftment using intermediate (Day -14) timing alemtuzumab (Marsh et al., 2013b). This study aims to test the efficacy of the Intermediate RIC strategy in a prospective multi-center study including HLH as well as other primary immunodeficiencies where allogeneic transplant with RIC has been shown to be feasible and stable chimerism is curative.

Detailed description

The primary goal of this Phase II clinical trial is to determine the one-year overall survival of patients treated for immune deficiencies including HLH, HLH-like disorders, CGD, HIGM1, IPEX syndrome, and severe LAD-I with Matched Related Donor (MRD)/ Matched Unrelated Donor (MUD) bone marrow transplant using a reduced-intensity conditioning strategy including intermediate-timing of alemtuzumab. The donor choice is an unaffected related bone marrow donor who is a 6/6 match at HLA-A, -B (intermediate or higher resolution) and -DRB1 (at high resolution using DNA-based typing) OR a 7/8 or 8/8 match for human leukocyte antigen (HLA)-A, -B, -C and -DRB1 (at high resolution using DNA-based typing), OR an unrelated bone marrow donor who is a 7/8 or 8/8 match at HLA-A, -B, -C and -DRB1 (at high resolution using DNA-based typing). The transplant conditioning regimen will include fludarabine, melphalan, and alemtuzumab starting at Day -14 (Flu/Mel/Alem). Graft Versus Host Disease (GVHD) prophylaxis will consist of cyclosporine and corticosteroids through engraftment. Post-transplant supportive care will include infection surveillance and prophylaxis, and disease-specific supportive care.

Interventions

BIOLOGICALHematopoietic Stem Cell Transplant

NOTE: The - sign is the number of days before the transplant and the + sign is the number of days after the transplant. * Alemtuzumab 0.2mg/kg Day-14,-13,-12,-11,-10 * Fludarabine 30 mg/m2 on Day -8,-7,-6,-5,-4 * Melphalan 140mg/m2 on Day -3 The GVHD prophylaxis will consist of the following: * Cyclosporine on Day -3 to Day +100, maintaining a level of 250-500 ng/mL, then taper to Day +180. * Methylprednisolone 2 mg/kg/day on Day -2 and -1, 1 mg/kg/day on Day 0 to Day +28, then taper over 1 month. Oral prednisone may be substituted starting on Day 0 (1.2 mg/kg/day)

Sponsors

National Heart, Lung, and Blood Institute (NHLBI)
CollaboratorNIH
Blood and Marrow Transplant Clinical Trials Network
CollaboratorNETWORK
National Cancer Institute (NCI)
CollaboratorNIH
National Marrow Donor Program
CollaboratorOTHER
Medical College of Wisconsin
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
4 Months to 45 Years
Healthy volunteers
No

Inclusion criteria

1. Patient is ≥ 3 months and ≤ 45 years of age at time of enrollment. 2. Meets criteria for one of the following immune disorders (2A-2F) requiring HCT: 2A. HLH or related disorder with indication for HCT \[a. Inherited gene mutation associated with HLH: PRF1, UNC13D (MUNC13-2), STXBP2 (MUNC18-2), STX11, RAB27A (Griscelli syndrome, type 2), SH2D1A (XLP1), XIAP (XLP2), LYST (Chediak-Higashi syndrome) - OR - b. Meets clinical criteria for HLH, refractory to therapy according to HLH-94 or HLH-2004 (dexamethasone/etoposide), or recurrent episodes of hyper-inflammation - OR - c. Meets clinical criteria for HLH, without identified gene defects, with affected sibling - OR - decreased or absent NK cell function at the last evaluation, - OR - a history of CNS inflammation as evidenced by pleocytosis in CSF or MRI evidence of hyper-inflammation in the CNS\] 2B. CAEBV: Patients with chronic EBV infection (CAEBV) with or without associated lymphoma (in complete remission) or active HLH. Note that this diagnosis is distinct from post-transplant lymphoproliferative disorder/ EBV-associated lymphoproliferative disease (PTLD/LPD). \[Patients must meet all of the following: a. Severe progressive illness, usually with fever, lymphadenopathy and splenomegaly that either began as primary EBV infection or was associated with markedly elevated antibody titers to EBV viral capsid antibody (≥ 1:5120) or early antigen (≥ 1:640), or markedly elevated EBV DNA in the blood; - AND - b. Infiltration of tissues (e.g., lymph nodes, liver, lungs, CNS, bone marrow, eye, skin) with lymphocytes; - AND - c. Elevated EBV DNA, RNA or proteins in affected tissues; - AND - d. The absence of HIV or post-transplant lymphoproliferative disorder\] 2C. Chronic granulomatous disease with indication for HCT \[a. Oxidative burst \< 10% normal with dihydrorhodamine (DHR) assay - AND - b. Documented CGD mutation(s) in gp91phox, p47phox, p67phox, p22phox or p40phox - AND - c. Severe disease as evidenced by one or more of the following: history of one or more potentially life-threatening infections; inflammatory bowel disease; failure to thrive with height \<10% for age (unless parent(s) height \<10%); or autoimmune complication felt to be linked to CGD\] 2D. X-linked Hyper IgM Syndrome (HIGM1) \[a. Decreased serum IgG (more than 2 standard deviations below normal for age) - AND - b. Mutation in CD40LG - OR - family history of maternally related males with HIGM1\] 2E. IPEX Syndrome \[a. Absent FOXP3+ CD4+ T cells - OR - abnormal function of FOXP3+CD4+ T cells - AND - b. Disease-associated mutation in FoxP3 (bi-allelic in females) - OR - family history of maternally related males with clinical diagnosis of IPEX\] 2F. Severe Leukocyte Adhesion Deficiency, type I (LAD-I) \[a. Decreased CD18 expression on neutrophils (\<5% normal for age) - AND - b. Mutation of ITGB2 - OR - absence of ITGB2 mRNA in leukocytes\] 3\. Lansky or Karnofsky performance status ≥ 50%. 4\. The patient's donor must be willing and able to give bone marrow stem cells and be: a. An unaffected sibling donor who is a 6/6 match at HLA-A and -B (intermediate or higher resolution) and -DRB1 (at high resolution using DNA-based typing) OR b. An unaffected related donor (other than sibling) who is a 7/8 or 8/8 match for HLA-A, -B, -C (at intermediate or higher resolution) and -DRB1 (at high resolution using DNA-based typing) OR c. An unrelated donor who is a 7/8 or 8/8 match at HLA-A, -B, -C, and -DRB1 (at high resolution using DNA-based typing). 5\. Patient must have adequate organ function as measured by: 1. Cardiac: Left ventricular ejection fraction (LVEF) \> 40%; or LV shortening fraction (LVSF) \> 26% by echocardiogram. 2. Renal: Calculated or radioisotope Glomerular Filtration Rate (GFR) \> 50 mL/min/1.73m\^2 3. Hepatic: Adequate liver function: serum conjugated (direct) bilirubin \< 2x upper limit of normal for age as per local laboratory (with the exceptions of isolated hyperbilirubinemia due to Gilbert's syndrome, or hyperbilirubinemia as the result of liver inflammation in the setting of persistent, active HLH); alanine aminotransferase (ALT) and aspartate aminotransferase (AST) \< 10x upper limit of normal as per local laboratory (with the exception of elevated transaminase levels as the result of liver inflammation in the setting of persistent, active HLH). 4. Pulmonary: Patient may not be on mechanical ventilation support or have progressive pulmonary infection at the time of transplant; Pulmonary Function Testing (PFT) with forced expiratory volume in one second (FEV1) \> 50% of normal and Diffusing capacity of the lung for carbon monoxide (DLCO) corrected for Hgb \> 50% of normal. Patients unable to undergo PFTs should have stable respiratory status with SaO2 \> 90% on a maximum of 2L/min supplemental oxygen. 6\. Signed informed consent.

Exclusion criteria

1. Hematopoietic stem cell transplant within 6 months of enrollment. 2. Uncontrolled bacterial, viral or fungal infection (currently receiving appropriate antimicrobials and experiencing progression or no clinical improvement) at time of enrollment. We recognize that patients with CAEBV may have ongoing EBV viremia at the time of initiating transplant therapy, but other patients should have no uncontrolled bacterial, viral or fungal infections at the time of enrollment (or prior to initiating the preparative regimen). 3. Pregnant or breastfeeding. 4. Seropositive for human immunodeficiency virus (HIV). 5. Alemtuzumab within 2 weeks of enrollment. 6. History of prior or current malignancy, especially malignancies with a likelihood of relapse and progression, with the exception of (1) EBV-associated lymphomas related to immune deficiency or lymphomas associated with X-linked LPD in a good remission, as they are unlikely to relapse after treatment; (2) Resected basal cell carcinoma or treated cervical carcinoma in situ. Cancer treated with curative intent will not be allowed unless approved by the Protocol Officer or one of the Protocol Chairs.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Overall Survival (OS)1 year and 18 months post-transplantOverall survival is defined as survival of death from any cause.

Secondary

MeasureTime frameDescription
Percentage of HLH Participants With HLH Reactivation Post-Transplant1 year post-transplantSystemic HLH Reactivation: Post-transplant HLH reactivation is defined by clinical and lab evidence of pathologic inflammation (persistent fever, progressive cytopenias, rising ferritin and soluble IL2Rα, decreasing fibrinogen, hepatosplenomegaly, end-organ damage) not attributable to other causes. Central nervous system (CNS) HLH Reactivation: Reactivation of CNS inflammation in patients with HLH may present with or without altered mental status and is defined by pleocytosis in Cerebrospinal fluid (CSF) or an MRI consistent with CNS inflammation not attributable to other causes.
Percentage of Participants With Neutrophil EngraftmentDay 42 post-transplantTime to absolute neutrophil count (ANC) engraftment is defined as the first of three measurements on different days that the patient has an absolute neutrophil count of ≥ 500x10\^6/liter following conditioning regimen induced nadir.
Percentage of Participants With Platelet EngraftmentDay 100 post-transplantPlatelet engraftment is defined as the first day of a minimum of three measurements on different days that the patient has achieved a platelet count \> 20,000 / microliter AND the patient is platelet transfusion independent for a minimum of seven days following conditioning regimen induced nadir.
Percentage of Participants Alive With Sustained Engraftment1 year post-transplantSustained engraftment is defined as the occurrence of whole blood donor chimerism \> 5% by Day 42 accompanied by the absence of any primary or secondary graft failure. Primary graft failure is defined as \< 5% donor chimerism by Day +42, second stem cell infusion, DLI (except in the case of donor CTLs given for infection control), or second HCT following original HCT. Secondary graft failure is defined as \< 5% donor chimerism following initial engraftment.
Percentage of Participants With Overall Survival (OS) by Disease Type1 year and 18 months post-transplantOverall survival is defined as survival of death from any cause.
Number of Participants With Acute Graft-Versus-Host Disease (GVHD)1 year post-transplantAcute GVHD is graded according to the scoring system proposed by Przepiorka et al.1995: Skin stage: 0: No rash 1. Rash \<25% of body surface area 2. Rash on 25-50% of body surface area 3. Rash on \> 50% of body surface area 4. Generalized erythroderma with bullous formation Liver stage (based on bilirubin level)\*: 0: \<2 mg/dL 1. 2-3 mg/dL 2. 3.01-6 mg/dL 3. 6.01-15.0 mg/dL 4. \>15 mg/dL GI stage\*: 0: No diarrhea or diarrhea \<500 mL/day 1. Diarrhea 500-999 mL/day or persistent nausea with histologic evidence of GVHD 2. Diarrhea 1000-1499 mL/day 3. Diarrhea \>1500 mL/day 4. Severe abdominal pain with or without ileus \* If multiple etiologies are listed for liver or GI, the organ system is downstaged by 1. GVHD grade: 0: All organ stages 0 or GVHD not listed as an etiology I: Skin stage 1-2 and liver and GI stage 0 II: Skin stage 3 or liver or GI stage 1 III: Liver stage 2-3 or GI stage 2-4 IV: Skin or liver stage 4
Percentage of Participants With Grade II-IV and Grade III-IV Acute GVHDDay 100 and 6 months post-transplantAcute GVHD is graded according to the scoring system proposed by Przepiorka et al.1995: Skin stage: 0: No rash 1. Rash \<25% of body surface area 2. Rash on 25-50% of body surface area 3. Rash on \> 50% of body surface area 4. Generalized erythroderma with bullous formation Liver stage (based on bilirubin level)\*: 0: \<2 mg/dL 1. 2-3 mg/dL 2. 3.01-6 mg/dL 3. 6.01-15.0 mg/dL 4. \>15 mg/dL GI stage\*: 0: No diarrhea or diarrhea \<500 mL/day 1. Diarrhea 500-999 mL/day or persistent nausea with histologic evidence of GVHD 2. Diarrhea 1000-1499 mL/day 3. Diarrhea \>1500 mL/day 4. Severe abdominal pain with or without ileus \* If multiple etiologies are listed for liver or GI, the organ system is downstaged by 1. GVHD grade: 0: All organ stages 0 or GVHD not listed as an etiology I: Skin stage 1-2 and liver and GI stage 0 II: Skin stage 3 or liver or GI stage 1 III: Liver stage 2-3 or GI stage 2-4 IV: Skin or liver stage 4
Number of Participants With Chronic GVHD1 year post-transplantChronic GVHD is classified per 2005 NIH Consensus Criteria (Filipovich et al. 2005) into categories of severity: none, mild, moderate, and severe.
Percentage of Participants With Chronic GVHD1 year post-transplantChronic GVHD is classified per 2005 NIH Consensus Criteria (Filipovich et al. 2005) into categories of severity: none, mild, moderate, and severe. Occurrence of chronic GVHD is defined as the occurrence of mild, moderate, or severe chronic GVHD per this classification.
Percentage of Participants Alive With Sustained Engraftment by Disease Type1 year post-transplantSustained engraftment is defined as the occurrence of whole blood donor chimerism \> 5% by Day 42 accompanied by the absence of any primary or secondary graft failure. Primary graft failure is defined as \< 5% donor chimerism by Day +42, second stem cell infusion, DLI (except in the case of donor CTLs given for infection control), or second HCT following original HCT. Secondary graft failure is defined as \< 5% donor chimerism following initial engraftment.

Countries

Canada, United States

Participant flow

Participants by arm

ArmCount
Hemophagocytic Lymphohistiocytosis (HLH)
Participants with Hemophagocytic Lymphohistiocytosis
34
Other Primary Immune Deficiencies (PID)
Participants with other primary immune deficiencies, including chronic active EBV disease, chronic granulomatous disease, hyper-immunoglobulin M syndrome, and immune dysregulation, polyendocrinopathy, enteropathy and X-linked (IPEX) syndrome
12
Total46

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyDeath1

Baseline characteristics

CharacteristicHemophagocytic Lymphohistiocytosis (HLH)Other Primary Immune Deficiencies (PID)Total
Age, Customized
0-9 Years
26 Participants8 Participants34 Participants
Age, Customized
10-19 Years
7 Participants2 Participants9 Participants
Age, Customized
20-29 Years
1 Participants2 Participants3 Participants
Donor Type
1 HLA Locus Mismatched Relative
0 Participants1 Participants1 Participants
Donor Type
1 HLA Locus Mismatched Unrelated
11 Participants2 Participants13 Participants
Donor Type
HLA Matched Sibling
7 Participants0 Participants7 Participants
Donor Type
HLA Matched Unrelated
16 Participants9 Participants25 Participants
Karnofsky Performance Score (KPS)
50
1 Participants0 Participants1 Participants
Karnofsky Performance Score (KPS)
60
1 Participants0 Participants1 Participants
Karnofsky Performance Score (KPS)
70
2 Participants0 Participants2 Participants
Karnofsky Performance Score (KPS)
80
6 Participants2 Participants8 Participants
Karnofsky Performance Score (KPS)
90-100
24 Participants10 Participants34 Participants
Primary Immune Deficiency Type
Chronic Active Epstein-Barr Virus
3 Participants3 Participants
Primary Immune Deficiency Type
Chronic Granulomatous Disease
5 Participants5 Participants
Primary Immune Deficiency Type
Hyperimmunoglobulin M Syndrome
2 Participants2 Participants
Primary Immune Deficiency Type
IPEX
2 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants0 Participants2 Participants
Race (NIH/OMB)
Black or African American
4 Participants2 Participants6 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants1 Participants3 Participants
Race (NIH/OMB)
White
26 Participants9 Participants35 Participants
Sex: Female, Male
Female
11 Participants4 Participants15 Participants
Sex: Female, Male
Male
23 Participants8 Participants31 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 46
serious
Total, serious adverse events
14 / 46

Outcome results

Primary

Percentage of Participants With Overall Survival (OS)

Overall survival is defined as survival of death from any cause.

Time frame: 1 year and 18 months post-transplant

ArmMeasureGroupValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Overall Survival (OS)1 year OS80.4 percentage of participants
Hematopoietic Stem Cell TransplantPercentage of Participants With Overall Survival (OS)18 month OS66.7 percentage of participants
Secondary

Number of Participants With Acute Graft-Versus-Host Disease (GVHD)

Acute GVHD is graded according to the scoring system proposed by Przepiorka et al.1995: Skin stage: 0: No rash 1. Rash \<25% of body surface area 2. Rash on 25-50% of body surface area 3. Rash on \> 50% of body surface area 4. Generalized erythroderma with bullous formation Liver stage (based on bilirubin level)\*: 0: \<2 mg/dL 1. 2-3 mg/dL 2. 3.01-6 mg/dL 3. 6.01-15.0 mg/dL 4. \>15 mg/dL GI stage\*: 0: No diarrhea or diarrhea \<500 mL/day 1. Diarrhea 500-999 mL/day or persistent nausea with histologic evidence of GVHD 2. Diarrhea 1000-1499 mL/day 3. Diarrhea \>1500 mL/day 4. Severe abdominal pain with or without ileus \* If multiple etiologies are listed for liver or GI, the organ system is downstaged by 1. GVHD grade: 0: All organ stages 0 or GVHD not listed as an etiology I: Skin stage 1-2 and liver and GI stage 0 II: Skin stage 3 or liver or GI stage 1 III: Liver stage 2-3 or GI stage 2-4 IV: Skin or liver stage 4

Time frame: 1 year post-transplant

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Hematopoietic Stem Cell TransplantNumber of Participants With Acute Graft-Versus-Host Disease (GVHD)Grade 0 or I35 Participants
Hematopoietic Stem Cell TransplantNumber of Participants With Acute Graft-Versus-Host Disease (GVHD)Grade II3 Participants
Hematopoietic Stem Cell TransplantNumber of Participants With Acute Graft-Versus-Host Disease (GVHD)Grade III5 Participants
Hematopoietic Stem Cell TransplantNumber of Participants With Acute Graft-Versus-Host Disease (GVHD)Grade IV3 Participants
Secondary

Number of Participants With Chronic GVHD

Chronic GVHD is classified per 2005 NIH Consensus Criteria (Filipovich et al. 2005) into categories of severity: none, mild, moderate, and severe.

Time frame: 1 year post-transplant

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Hematopoietic Stem Cell TransplantNumber of Participants With Chronic GVHDNone34 Participants
Hematopoietic Stem Cell TransplantNumber of Participants With Chronic GVHDMild10 Participants
Hematopoietic Stem Cell TransplantNumber of Participants With Chronic GVHDSevere2 Participants
Secondary

Percentage of HLH Participants With HLH Reactivation Post-Transplant

Systemic HLH Reactivation: Post-transplant HLH reactivation is defined by clinical and lab evidence of pathologic inflammation (persistent fever, progressive cytopenias, rising ferritin and soluble IL2Rα, decreasing fibrinogen, hepatosplenomegaly, end-organ damage) not attributable to other causes. Central nervous system (CNS) HLH Reactivation: Reactivation of CNS inflammation in patients with HLH may present with or without altered mental status and is defined by pleocytosis in Cerebrospinal fluid (CSF) or an MRI consistent with CNS inflammation not attributable to other causes.

Time frame: 1 year post-transplant

Population: Participants with HLH

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of HLH Participants With HLH Reactivation Post-Transplant14.7 percentage of participants
Secondary

Percentage of Participants Alive With Sustained Engraftment

Sustained engraftment is defined as the occurrence of whole blood donor chimerism \> 5% by Day 42 accompanied by the absence of any primary or secondary graft failure. Primary graft failure is defined as \< 5% donor chimerism by Day +42, second stem cell infusion, DLI (except in the case of donor CTLs given for infection control), or second HCT following original HCT. Secondary graft failure is defined as \< 5% donor chimerism following initial engraftment.

Time frame: 1 year post-transplant

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants Alive With Sustained Engraftment39.1 percentage of participants
Secondary

Percentage of Participants Alive With Sustained Engraftment by Disease Type

Sustained engraftment is defined as the occurrence of whole blood donor chimerism \> 5% by Day 42 accompanied by the absence of any primary or secondary graft failure. Primary graft failure is defined as \< 5% donor chimerism by Day +42, second stem cell infusion, DLI (except in the case of donor CTLs given for infection control), or second HCT following original HCT. Secondary graft failure is defined as \< 5% donor chimerism following initial engraftment.

Time frame: 1 year post-transplant

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants Alive With Sustained Engraftment by Disease Type41.2 percentage of participants
Other Primary Immune Deficiencies (PID)Percentage of Participants Alive With Sustained Engraftment by Disease Type33.3 percentage of participants
Secondary

Percentage of Participants With Chronic GVHD

Chronic GVHD is classified per 2005 NIH Consensus Criteria (Filipovich et al. 2005) into categories of severity: none, mild, moderate, and severe. Occurrence of chronic GVHD is defined as the occurrence of mild, moderate, or severe chronic GVHD per this classification.

Time frame: 1 year post-transplant

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Chronic GVHD26.7 percentage of participants
Secondary

Percentage of Participants With Grade II-IV and Grade III-IV Acute GVHD

Acute GVHD is graded according to the scoring system proposed by Przepiorka et al.1995: Skin stage: 0: No rash 1. Rash \<25% of body surface area 2. Rash on 25-50% of body surface area 3. Rash on \> 50% of body surface area 4. Generalized erythroderma with bullous formation Liver stage (based on bilirubin level)\*: 0: \<2 mg/dL 1. 2-3 mg/dL 2. 3.01-6 mg/dL 3. 6.01-15.0 mg/dL 4. \>15 mg/dL GI stage\*: 0: No diarrhea or diarrhea \<500 mL/day 1. Diarrhea 500-999 mL/day or persistent nausea with histologic evidence of GVHD 2. Diarrhea 1000-1499 mL/day 3. Diarrhea \>1500 mL/day 4. Severe abdominal pain with or without ileus \* If multiple etiologies are listed for liver or GI, the organ system is downstaged by 1. GVHD grade: 0: All organ stages 0 or GVHD not listed as an etiology I: Skin stage 1-2 and liver and GI stage 0 II: Skin stage 3 or liver or GI stage 1 III: Liver stage 2-3 or GI stage 2-4 IV: Skin or liver stage 4

Time frame: Day 100 and 6 months post-transplant

ArmMeasureGroupValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Grade II-IV and Grade III-IV Acute GVHDGrade II-IV Acute GVHD at Day 10017.4 percentage of participants
Hematopoietic Stem Cell TransplantPercentage of Participants With Grade II-IV and Grade III-IV Acute GVHDGrade II-IV Acute GVHD at 6 Months26.1 percentage of participants
Hematopoietic Stem Cell TransplantPercentage of Participants With Grade II-IV and Grade III-IV Acute GVHDGrade III-IV Acute GVHD at Day 10010.9 percentage of participants
Hematopoietic Stem Cell TransplantPercentage of Participants With Grade II-IV and Grade III-IV Acute GVHDGrade III-IV Acute GVHD at 6 Months17.4 percentage of participants
Secondary

Percentage of Participants With Neutrophil Engraftment

Time to absolute neutrophil count (ANC) engraftment is defined as the first of three measurements on different days that the patient has an absolute neutrophil count of ≥ 500x10\^6/liter following conditioning regimen induced nadir.

Time frame: Day 42 post-transplant

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Neutrophil Engraftment100.0 percentage of participants
Secondary

Percentage of Participants With Overall Survival (OS) by Disease Type

Overall survival is defined as survival of death from any cause.

Time frame: 1 year and 18 months post-transplant

ArmMeasureGroupValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Overall Survival (OS) by Disease Type18 month OS68.0 percentage of participants
Hematopoietic Stem Cell TransplantPercentage of Participants With Overall Survival (OS) by Disease Type1 year OS82.4 percentage of participants
Other Primary Immune Deficiencies (PID)Percentage of Participants With Overall Survival (OS) by Disease Type18 month OS62.5 percentage of participants
Other Primary Immune Deficiencies (PID)Percentage of Participants With Overall Survival (OS) by Disease Type1 year OS75.0 percentage of participants
Secondary

Percentage of Participants With Platelet Engraftment

Platelet engraftment is defined as the first day of a minimum of three measurements on different days that the patient has achieved a platelet count \> 20,000 / microliter AND the patient is platelet transfusion independent for a minimum of seven days following conditioning regimen induced nadir.

Time frame: Day 100 post-transplant

ArmMeasureValue (NUMBER)
Hematopoietic Stem Cell TransplantPercentage of Participants With Platelet Engraftment88.9 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026