Acute-graft-versus-host Disease, Chronic Graft-versus-host-disease, Solid Organ Transplant
Conditions
Brief summary
While hematopoietic stem cell transplant (HSCT) is an effective therapy, graft versus host disease (GVHD) is the most significant complication after HSCT. Both acute GVHD and chronic GVHD are leading causes of non-relapse morbidity and mortality. Patients with solid organ transplants may participate in this study as well because these patients occasionally develop acute GVHD, which is biologically similar to acute GVHD after an HSCT. Acute graft versus host disease usually occurs within the first 100 days of transplant and can involve the skin, gut, or liver. Chronic graft versus host disease usually occurs after the first 100 days of transplant and can involve skin, eyes, mouth, joints, liver, intestines commonly. These two diseases are different, but both happen due to the imbalance of the donor immune system in the host. The purpose of this research is to learn more about ruxolitinib as a treatment for both acute and chronic GVHD. Specifically, the investigators would like to learn more about the pharmacokinetics (PK - the process of absorption, distribution, metabolism, and elimination from the body - meaning how the drug moves through the body) and the pharmacodynamics (PD - the body's biological response to the drug) of ruxolitinib.
Interventions
DRUGRuxolitinib
Ruxolitinib will be given by mouth or enteral tube (if applicable).
Sponsors
Children's Hospital Medical Center, Cincinnati
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
No minimum to 18 Years
Healthy volunteers
No
Inclusion criteria
ARM 1 Inclusion Criteria: * Established diagnosis of chronic GVHD (all grades eligible) * Currently on treatment with ruxolitinib for chronic GVHD for a minimum of 3 weeks * No changes in doses of ruxolitinib or concurrent azoles (if present) one week prior to obtaining ruxolitinib levels * Ages eligible for enrollment (0-≤18 years at time of enrollment)
Exclusion criteria
* Clinical presentation resembling overlap syndrome with both acute and chronic GVHD features ARM 2 Inclusion Criteria: * Ages \<12 years status post allogeneic hematopoietic stem cell transplant or solid organ transplant * Any underlying diagnoses, preparative regimen, stem cell source or acute GVHD prophylaxis are eligible * Diagnosis of acute GVHD which is refractory to steroids (defined as lack of improvement to 2 mg/kg/day of methylprednisolone or bioequivalent oral steroids, for 7 days or progression of acute GVHD within 72 hours at 2 mg/kg/day of Methylprednisolone or bioequivalent oral doses) * Able to take enteral medications * Clinically diagnosed Grades II to IV acute GVHD as per modified Glucksberg criteria occurring after allogeneic HSCT requiring systemic immune suppressive therapy. Biopsy of involved organs with acute GVHD is encouraged but not required for study enrollment. * Blood counts at decision to initiate ruxolitinib: absolute neutrophil count (ANC) \> 1000/mm3\* AND platelets ≥ 20,000/mm3 (\*Use of growth factor supplementation and transfusion support is allowed to achieve these above defined hematological parameters) * Estimated GFR by cystatin C of \>30 mL/min * Prior systemic treatments for acute GVHD are allowed. Once ruxolitinib is initiated, no further doses of these agents will be allowed. * Calcineurin inhibitors are allowed throughout the duration of study and may be discontinued per treating physician discretion. Additionally dose adjustments to maintain target blood levels of calcineurin inhibitors may proceed per routine clinical practice.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cmax of ruxolitinib in existing patients with chronic GVHD (Arm 1) | 1 week | Maximum Plasma Concentration of ruxolitinib |
| Cmax of ruxolitinib in patients with acute GVHD (Arm 2) | 30 days | Maximum Plasma Concentration of ruxolitinib |
| Cmax of ruxolitinib in patients with new onset chronic GVHD (Arm 3) | 6 months | Maximum Plasma Concentration of ruxolitinib |
| To measure phosphorylation of STAT5 on lymphocytes as a functional measure of JAK inhibition (Arms 1, 2, and 3) | Approximately 2 hours after the ruxolitinib dose | A blood sample will be collected at the specified time point and pharmacodynamics will be measured by PSTAT5 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Number of participants with complete response to ruxolitinib (Arm 2) | 30 days after ruxolitinib initiation | Complete response is defined as resolution of acute GVHD |
| Number of participants with partial response to ruxolitinib (Arm 2) | 30 days after ruxolitinib initiation | Partial response is defined as improvement in stage of at least one organ involved in acute GVHD without worsening in additional organs |
| Number of participants with relapse free survival at 6 months (Arm 1) | 6 months after ruxolitinib initiation | Relapse free survival at 6 months for participants on Arm 1 only if participant has been on ruxolitinib clinically for 6 months |
| Incidence of infections (Arm 1) | through study completion, average of 7 days | Infections defined as bacterial, parasitic, fungal, new viral reactivation or disease |
| Incidence of infections (Arm 2) | 30 days after ruxolitinib initiation | Infections defined as bacterial, parasitic, fungal, new viral reactivation or disease |
| Incidence of infections (Arm 3) | 6 months after ruxolitinib initiation | Infections defined as bacterial, parasitic, fungal, new viral reactivation or disease |
| Incidence of known side effects (Arm 1) | through study completion, average of 7 days | Known side effects are defined as the side effects included in the Investigator's Brochure |
| Number of participants with no response to ruxolitinib (Arm 2) | 30 days after ruxolitinib initiation | No response is defined as lack of improvement or worsening of acute GVHD |
| Incidence of known side effects (Arm 3) | 6 months after ruxolitinib initiation | Known side effects are defined as the side effects included in the Investigator's Brochure |
| Incidence of unknown side effects (Arm 1) | through study completion, average of 7 days | Unknown side effects are defined as the side effects not included in the Investigator's Brochure |
| Incidence of unknown side effects (Arm 2) | 30 days after ruxolitinib initiation | Unknown side effects are defined as the side effects not included in the Investigator's Brochure |
| Incidence of unknown side effects (Arm 3) | 6 months after ruxolitinib initiation | Unknown side effects are defined as the side effects not included in the Investigator's Brochure |
| Number of participants who were weaned off steroids (Arm 2) | 30 days after ruxolitinib initiation | Participants will be considered weaned off steroids if the steroid dose has been decreased |
| Number of participants who were weaned off steroids (Arm 3) | 6 months after ruxolitinib initiation | Participants will be considered weaned off steroids if the steroid dose has been decreased |
| Incidence of known side effects (Arm 2) | 30 days after ruxolitinib initiation | Known side effects are defined as the side effects included in the Investigator's Brochure |
| Number of participants with response to ruxolitinib (Arm 3) | 6 months after ruxolitinib initiation | Response is defined as resolution of chronic GVHD in at least one organ without worsening in additional organs |
| Number of participants with relapse free survival at 6 months (Arm 3) | 6 months after ruxolitinib initiation | — |
| Number of participants with overall survival (Arm 3) | 6 months after ruxolitinib initiation | — |
Countries
United States
Outcome results
None listed