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OncoMatch/Clinical Trials/NCT07098936

Momelotinib in VEXAS Syndrome

Is NCT07098936 recruiting? Yes, currently enrolling (May 2026). This Phase 2 trial studies Momelotinib treatment for vexas syndome.

Phase 2RecruitingGroupe Francophone des MyelodysplasiesNCT07098936Data as of May 2026

Treatment: Momelotinib treatmentMulticenter, phase II trial with safety run-in to evaluate the efficacy and safety of momelotinib in patients with VEXAS (Vacuoles, E1 enzyme, X-linked, Autoinflammatory and Somatic) syndrome with or without associated myelodysplastic syndrome (MDS). The study will consist of two consecutive steps, a dose-finding safety run-in and a single-arm prospective phase II. During safety run-in phase, three fixed dose levels will be tested according to a 3+3 design, using cohorts of size 3 in order to establish the maximum tolerated dose. After this safety run-in phase, patients included in phase II will be treated with momelotinib at the maximum tolerated dose preliminary fixed. Patients included in the phase II will receive momelotinib continuously until disease progression or loss of response, at physician's discretion. All patients included in the study will receive glucocorticoids (prednisone/prednisolone equivalent) at baseline (at least \> 10mg/day). Response assessment regarding VEXAS related symptoms will be evaluated after 4, 12, 24 and 48 weeks. Response assessment regarding MDS features will be evaluated at 12 and 24 weeks.

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Extracted eligibility criteria

Biomarker criteria

Required: UBA1 mutation

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Prior therapy

Must have received: immunosuppressive therapy (steroids)

Patients with uncontrolled symptoms related to VEXAS with prior treatment line(s) (including steroids)

Cannot have received: Janus Kinase (JAK) inhibitor

Patients who are or have been already treated with Janus Kinase (JAK) inhibitors for VEXAS syndrome or another indication

Lab requirements

Kidney function

creatinine clearance with MDRD formula > 30 ml/min

Liver function

serum transaminases ≤ 3 x ULN, Bilirubin ≤ 1.5 x ULN (isolated bilirubin > 1.5 x ULN is acceptable if bilirubin fractionated and direct bilirubin < 35%)

Adequate liver function (serum transaminases ≤ 3 x ULN (Upper Limits of Normal), Bilirubin ≤ 1.5 x ULN (isolated bilirubin > 1.5 x ULN is acceptable if bilirubin fractionated and direct bilirubin < 35%)); Adequate renal function (creatinine clearance with MDRD (Modification of Diet in Renal Disease) formula > 30 ml/min)

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