Treatment for patients with steroid-refractory acute graft-versus-host disease

Phase 2 Open Label Prospective Dose-Ranging Clinical Trial With Escalation and Expansion Cohorts to Evaluate Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, Dosing, and Efficacy of RLS-0071 for the Treatment of Hospitalized Patients With Steroid-Refractory Acute Graft-versus-Host Disease

Phase 2 Interventional ReAlta Life Sciences, Inc. · NCT06343792

This study is testing a new drug called RLS-0071 to see if it can help hospitalized patients with acute graft-versus-host disease who haven't improved with steroid treatments.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment66 (estimated)
Ages12 Years and up
SexAll
SponsorReAlta Life Sciences, Inc. Industry-sponsored
Drugs / interventionsruxolitinib
Locations11 sites (Duarte, California and 10 other locations)
Trial IDNCT06343792 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety, tolerability, pharmacokinetics, pharmacodynamics, dosing, and efficacy of RLS-0071 in hospitalized patients suffering from steroid-refractory acute graft-versus-host disease (aGvHD). It is an open-label, prospective, dose-ranging escalation and expansion trial designed to assess the drug's effectiveness in patients who have not responded to standard steroid treatments. Participants must be hospitalized and meet specific criteria regarding their condition and treatment history. The trial aims to provide insights into the optimal dosing and potential benefits of RLS-0071 for this challenging condition.

Who should consider this trial

Good fit: Ideal candidates are hospitalized adults or adolescents over 12 years old with steroid-refractory aGvHD after allo-HSCT.

Not a fit: Patients who have received more than one allo-HSCT or have uncontrolled gastrointestinal infections may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could offer a new therapeutic option for patients with steroid-refractory aGvHD, potentially improving their outcomes.

How similar studies have performed: While this approach is novel, similar studies targeting steroid-refractory aGvHD have shown promise, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or female adults or adolescents (\>12 years old).
* Hospitalized with steroid-refractory aGvHD (grade II-IV) after allo-HSCT
* Anticipated hospital length-of-stay of at least 1 week from the time of RLS-0071 initiation.
* No plans to add additional GvHD treatment medications or to add, dose-adjust, or discontinue GvHD prophylactic medications during the 7-days of RLS-0071 treatment.
* Neutrophil recovery following the stem-cell transplantation, defined as blood neutrophil count \>500/mL for at least 3 consecutive measurements and not supported by growth factor supplementation
* Weight ≥40 kg and ≤ 140 kg at screening.

Exclusion Criteria:

* Has received more than 1 allo-HSCT
* Current, previous, or planned use of any systemic treatment in addition to or other than corticosteroids or ruxolitinib for aGvHD
* Previous failure of ruxolitinib treatment
* Uncontrolled GI infection
* Endoscopic and biopsy testing (if performed) that definitively rules out lower GI aGvHD
* Chronic GvHD
* Participants with evidence of relapsed primary disease, or participants who have been treated for relapse after the allo-HSCT was performed.
* Unresolved toxicity or complications (other than aGvHD) due to the allo-HSCT
* Any corticosteroid therapy for indications other than aGvHD at doses of methylprednisolone or equivalent \>1 mg/kg per day within 7 days of enrollment.
* Severe organ dysfunction unrelated to underlying aGvHD
* Known hypersensitivity, allergy, or anaphylactic reaction to polyethylene glycol (PEG)
* Significant liver disease that is unrelated to GvHD
* Severe kidney disease
* Currently breast feeding.
* Known pregnancy, a positive pregnancy test at screening, or lactation for WOCBP.
* Active hepatitis B virus (HBV) or hepatitis C virus infection that requires treatment or human immunodeficiency virus (HIV)-1 or HIV-2.
* Active sepsis

Where this trial is running

Duarte, California and 10 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Steroid Refractory GVHD
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.