Combining TL-895 with Ruxolitinib for treating Myelofibrosis

An Open-Label, Multicenter, Phase 1b/2 Study of the Safety and Efficacy of TL-895 Combined With Ruxolitinib in Janus-associated Kinase Inhibitor (JAKi) Treatment-Naïve Myelofibrosis (MF) Subjects and Subjects With MF Who Have a Suboptimal Response to Ruxolitinib

PHASE1; PHASE2 · Telios Pharma, Inc. · NCT05280509

This study is testing if combining TL-895 with Ruxolitinib can help people with Myelofibrosis feel better, especially those who haven't responded well to Ruxolitinib alone.

Quick facts

PhasePHASE1; PHASE2
Study typeInterventional
Enrollment70 (estimated)
Ages18 Years and up
SexAll
SponsorTelios Pharma, Inc. (industry)
Drugs / interventionsruxolitinib
Locations19 sites (Birmingham, Alabama and 18 other locations)
Trial IDNCT05280509 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of TL-895, a selective tyrosine kinase inhibitor, in patients with Myelofibrosis who are either treatment-naïve or have shown a suboptimal response to ruxolitinib. Participants must have a confirmed diagnosis of primary Myelofibrosis, post-PV Myelofibrosis, or post-ET Myelofibrosis, and meet specific risk criteria. The study aims to assess the safety and efficacy of this combination therapy in improving patient outcomes.

Who should consider this trial

Good fit: Ideal candidates include adults with Myelofibrosis who are either new to treatment or have not responded adequately to ruxolitinib.

Not a fit: Patients who have previously received any JAK inhibitor or have documented disease progression while on ruxolitinib may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with Myelofibrosis who have limited responses to existing treatments.

How similar studies have performed: Other studies have explored similar combinations, but the specific use of TL-895 with ruxolitinib in this context is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Subjects with suboptimal response to ruxolitinib:

* Treatment with at a stable dose of ruxolitinib prior to study entry
* Subjects ≥ 18 years of age and able to provide informed consent.
* Confirmed diagnosis of PMF, post-PV MF, or post-ET MF, as assessed by treating physician according to the World Health Organization (WHO) criteria
* High-risk, intermediate-2 risk, or intermediate-1 risk, defined by Dynamic International Prognostic System (DIPSS)
* Palpable spleen measuring ≥ 5 cm below the left lower coastal margin (LLCM) or spleen volume of ≥ 450 cm3 by MRI or CT scan assessment
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2
* Adequate hematological, hepatic, \& renal function.

Exclusion Criteria:

Treatment-naive subjects:

* Prior treatment with any JAKi

Subjects with suboptimal response to ruxolitinib:

* Documented disease progression while on ruxolitinib treatment

All subjects:

* Prior splenectomy or splenic irradiation within 24 weeks prior to first dose of study treatment
* Prior treatment with a BTK or BMX inhibitor

Where this trial is running

Birmingham, Alabama and 18 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.

View on ClinicalTrials.gov →

Conditions: Myelofibrosis, Primary Myelofibrosis, Post-PV MF, Post-ET Myelofibrosis

Last reviewed 2026-05-15 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.