Table of Contents
- Trial overview
- Who was studied
- What was tested
- Study phases and endpoints
- Trial status and size
- Key patient terms
Trial overview
The main study in the data is NCT04417517, a Phase 1/2 study of Alx148 with azacitidine in people with higher risk myelodysplastic syndrome (MDS).[1] The study was designed to look first at safety and dose finding, and then at how well the treatment worked in patients with previously untreated higher risk MDS.[1]
Who was studied
This trial included adults with higher risk MDS, which means a form of bone marrow disease with a greater chance of serious progression.[1] The brief summary says the Phase 1 part included adult patients with relapsed or refractory MDS, as well as previously untreated higher risk MDS, while the Phase 2 part focused on previously untreated higher risk MDS with an IPSS-R score above 3.5.[1]
Relapsed means the disease came back after improvement, and refractory means it did not respond well to treatment.[1] Previously untreated means patients had not yet received treatment for their disease.[1]
What was tested
The study tested Alx148 in combination with azacitidine, and both drugs were given by intravenous use in the trial record.[1] The Phase 2 part compared the combination of Alx148 at the recommended Phase 2 dose with azacitidine alone.[1]
The trial was not only asking whether the treatment might help, but also whether it could be given safely in this patient group.[1] In simple terms, the study was trying to find the best balance between possible benefit and acceptable safety.[1]
Study phases and endpoints
Phase 1 focused on safety, tolerability, and finding the recommended Phase 2 dose, also called RP2D.[1] The dose escalation part looked for dose-limiting toxicities, which are side effects serious enough to limit treatment at a certain dose.[1]
The dose expansion part measured adverse events, meaning any medical problems that happened during treatment, and recorded their type, frequency, severity, timing, seriousness, and relationship to the study therapy.[1] These details help researchers understand how the treatment behaves in more patients.[1]
The Phase 2 part measured complete response rate (CRR), which is the share of patients who reached a complete response by the study’s response rules.[1] The study used modified IWG 2006 response criteria for MDS, and the final analysis was planned after the last patient finished 6 treatment cycles or was ready to be assessed for response.[1]
Trial status and size
The trial status is listed as Completed.[1] The enrollment was small, with 6 participants in the record provided.[1] Because this was an early-phase study, the main goal was to learn about safety and the right dose before larger studies could be done.[1]
Key patient terms
- Interventional study: a trial where researchers give a treatment and then measure what happens.[1]
- Intravenous use: medicine given through a vein.[1]
- Response criteria: the rules used to decide whether the disease improved.[1]
- Complete response: a strong improvement defined by the study’s rules.[1]
- IPSS-R score: a risk score used to show how serious MDS is.[1]



