RECRUITING

Pacritinib in Vacuoles, E1 Ubiqutin-activating Enzyme, X-linked, Autoinflammatory, Somatic (VEXAS) Syndrome

Conditions

E1 Ubiqutin-activating Enzyme, X-linked, Autoinflammatory, Somatic Syndrome VEXAS Vexas Syndrome Autoinflammatory UBA1 Pacritinib

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Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

VEXAS (vacuoles, E1 ubiqutin-activating enzyme, X-linked, autoinflammatory, somatic syndrome) is a recently described disorder with severe hematologic and rheumatologic manifestations caused by somatic variants in the ubiquitin- activating enzyme gene, UBA1, that is acquired in hematopoietic progenitor cells. Patients are often debilitated by autoinflammatory symptoms and there is currently no standard of care available. There is a clinically unmet need for better therapies in VEXAS Syndrome. There have been no prospective clinical trials of JAK-I in VEXAS syndrome. The investigators hypothesize that pacritinib, as a JAK2/IRAK1 inhibitor with a manageable safety profile in myelofibrosis patients with thrombocytopenia, will improve the autoinflammatory and hematologic manifestations of VEXAS syndrome with a tolerable toxicity profile. The investigators propose a single arm, pilot Phase 1 study evaluating the safety and tolerability of pacritinib in patients with VEXAS syndrome with an initial safety run-in phase of 6 patients treated with pacritinib 200mg twice daily (BID) on days 1-28 of a continuous 28 day cycle. If no more than 1 patient experiences a dose-limiting toxicity (DLT), the investigators will enroll an expansion cohort to gain additional toxicity and efficacy data, for a total enrollment of 15 patients. If more than 1 patient experiences a DLT during the safety run-in phase, the investigators will decrease the dose to 100 mg BID, and if no more than 1 of 6 patients experiences a DLT, the investigators will complete the expansion cohort as above for up to a total enrollment of 15 patients. If more than 1 patient experiences a DLT at 100 mg BID, the investigators will discontinue the study. Patients will be treated for up to 12 cycles.

Official Title

A Phase 1 Study of Pacritinib in Vacuoles, E1 Ubiqutin-activating Enzyme, X-linked, Autoinflammatory, Somatic (VEXAS) Syndrome

Quick Facts

Study Start:2025-02-13

Study Completion:2029-02-28

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT06538181

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:No

Standard Ages:ADULT, OLDER_ADULT

Inclusion Criteria	Exclusion Criteria
* Patients must have UBA1 mutation with a variant allele frequency (VAF) of ≥ 2% detected on a next generation sequencing panel and have at least one of the following current or past clinical manifestation of VEXAS syndrome, as determined by the attending physician: * skin rash * vasculitis * chondritis * ocular/orbital inflammation (e.g., uveitis/iritis, episcleritis) * genitourinary inflammation (e.g., epididymitis/orchitis) * arthritis/arthralgias * pulmonary inflammation (e.g., alveolitis/pleural effusion,) * fever * thrombosis * splenomegaly * hepatomegaly * myocarditis or pericarditis * cytopenias (defined as hemoglobin \<11 g/dL, platelets \< 100 X 10\^9 /L, OR absolute neutrophil count \<1.0 X 10\^9 /L). * Patients with VEXAS syndrome who have never been treated with a JAK-I will be eligible to enroll on study. A stable corticosteroid dose must be maintained for at least 14 days prior to start of pacritinib. * Patients who have previously been treated with a JAK-I other than pacritinib, or who are currently being treated with a JAK-I other than pacritinib, may be eligible after a 28 day washout if either (i) their symptoms are not adequately controlled, as determined by the treating physician, or (ii) they have been unable to taper corticosteroids to an equivalent of \<10 mg prednisone/day, and in the opinion of the treating physician, may benefit from a change in JAK-I. A stable corticosteroid dose must be maintained for at least 14 days prior to start of pacritinib. * At least 18 years of age. * ECOG performance status ≤ 3. * Organ function as defined below: * Absolute neutrophil count ≥ 0.5 K/cumm * Platelets ≥ 25 K/cumm * PT/PTT \<2.5 X upper limit of normal (ULN) * Total bilirubin ≤ 1.5 x IULN * AST(SGOT)/ALT(SGPT) ≤ 3.0 x IULN * Creatinine clearance ≥ 30 mL/min by Cockcroft-Gault * QTcF \< 480 msec. * The effects of pacritinib on the developing human fetus are unknown. For this reason and because pacritinib was shown to be teratogenic in animal studies, women of childbearing potential and men must agree to use highly effective contraception prior to study entry, for the duration of study participation, and for 3 months after completion of study treatment. Hormonal contraception is no longer considered highly effective alone as pacritinib is a CYP3A4 inducer and accelerated progesterone metabolism. The contraceptive methods considered highly effective for WOCBP who receive pacritinib are intrauterine devices, bilateral tubal occlusion, vasectomized partner, or total sexual abstinence. Hormonal contraceptives (e.g., Depo-Provera) alone are not considered highly effective methods of contraception on their own when in treatment with pacritinib; such hormonal contraceptives must be combined with an additional barrier method (condom, diaphragm with spermicidal gel, or condoms with spermicides to be considered highly effective. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately. * Ability to understand and willingness to sign an IRB approved written informed consent document or that of legally authorized representative, if applicable. * Patients with myelodysplastic neoplasms (MDS) or plasma cell dyscrasias are eligible if they are not undergoing active treatment. Supportive care is permitted.	* Prior use of pacritinib. * Use of another JAK inhibitor within 28 days of C1D1 of pacritinib. * Currently receiving any other investigational agents. Patients may be eligible after 28 day washout. * Thrombotic events (arterial or venous) within 60 days prior to enrollment. * Any recent bleeding within at least 7 days prior to enrollment. * Any active or acute infection. * History of malignancy within the prior 2 years, with the exception of MDS and plasma cell dyscrasias, or non-melanoma skin cancers that have been treated. * History of clinically significant cardiovascular disease or clinically significant abnormalities in rhythm or conduction during screening EKG, including severe cardiac events, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled cardiac arrhythmia, or heart failure. * Currently receiving immunosuppressants (other than corticosteroids), disease-modifying antirheumatic drugs (DMARDs), or biologic cytokine inhibitors. Patients may be eligible after 28 day washout. * A history of allergic reactions attributed to compounds of similar chemical or biologic composition to pacritinib. * Concurrent use of strong CYP3A4 inhibitors or inducers. Patients may be eligible after washout period of 28 days (or 5 half-lives, whichever is shorter). * Diagnosis or history of moderate (Child-Pugh B) and severe hepatic impairment (Child-Pugh C). * Pregnant and/or breastfeeding. Women of childbearing potential must have a negative serum pregnancy test within 7 days of C1D1 or negative urine pregnancy test within 3 days of C1D1. * Known active viral infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV). * Patients with latent tuberculosis. Patients must have a negative T-Spot during screening to be eligible.

Inclusion Criteria

Exclusion Criteria

* Patients must have UBA1 mutation with a variant allele frequency (VAF) of ≥ 2% detected on a next generation sequencing panel and have at least one of the following current or past clinical manifestation of VEXAS syndrome, as determined by the attending physician:
* skin rash
* vasculitis
* chondritis
* ocular/orbital inflammation (e.g., uveitis/iritis, episcleritis)
* genitourinary inflammation (e.g., epididymitis/orchitis)
* arthritis/arthralgias
* pulmonary inflammation (e.g., alveolitis/pleural effusion,)
* fever
* thrombosis
* splenomegaly
* hepatomegaly
* myocarditis or pericarditis
* cytopenias (defined as hemoglobin \<11 g/dL, platelets \< 100 X 10\^9 /L, OR absolute neutrophil count \<1.0 X 10\^9 /L).
* Patients with VEXAS syndrome who have never been treated with a JAK-I will be eligible to enroll on study. A stable corticosteroid dose must be maintained for at least 14 days prior to start of pacritinib.
* Patients who have previously been treated with a JAK-I other than pacritinib, or who are currently being treated with a JAK-I other than pacritinib, may be eligible after a 28 day washout if either (i) their symptoms are not adequately controlled, as determined by the treating physician, or (ii) they have been unable to taper corticosteroids to an equivalent of \<10 mg prednisone/day, and in the opinion of the treating physician, may benefit from a change in JAK-I. A stable corticosteroid dose must be maintained for at least 14 days prior to start of pacritinib.
* At least 18 years of age.
* ECOG performance status ≤ 3.
* Organ function as defined below:
* Absolute neutrophil count ≥ 0.5 K/cumm
* Platelets ≥ 25 K/cumm
* PT/PTT \<2.5 X upper limit of normal (ULN)
* Total bilirubin ≤ 1.5 x IULN
* AST(SGOT)/ALT(SGPT) ≤ 3.0 x IULN
* Creatinine clearance ≥ 30 mL/min by Cockcroft-Gault
* QTcF \< 480 msec.
* The effects of pacritinib on the developing human fetus are unknown. For this reason and because pacritinib was shown to be teratogenic in animal studies, women of childbearing potential and men must agree to use highly effective contraception prior to study entry, for the duration of study participation, and for 3 months after completion of study treatment. Hormonal contraception is no longer considered highly effective alone as pacritinib is a CYP3A4 inducer and accelerated progesterone metabolism. The contraceptive methods considered highly effective for WOCBP who receive pacritinib are intrauterine devices, bilateral tubal occlusion, vasectomized partner, or total sexual abstinence. Hormonal contraceptives (e.g., Depo-Provera) alone are not considered highly effective methods of contraception on their own when in treatment with pacritinib; such hormonal contraceptives must be combined with an additional barrier method (condom, diaphragm with spermicidal gel, or condoms with spermicides to be considered highly effective. Should a woman become pregnant or suspect she is pregnant while participating in this study, she must inform her treating physician immediately.
* Ability to understand and willingness to sign an IRB approved written informed consent document or that of legally authorized representative, if applicable.
* Patients with myelodysplastic neoplasms (MDS) or plasma cell dyscrasias are eligible if they are not undergoing active treatment. Supportive care is permitted.

* Prior use of pacritinib.
* Use of another JAK inhibitor within 28 days of C1D1 of pacritinib.
* Currently receiving any other investigational agents. Patients may be eligible after 28 day washout.
* Thrombotic events (arterial or venous) within 60 days prior to enrollment.
* Any recent bleeding within at least 7 days prior to enrollment.
* Any active or acute infection.
* History of malignancy within the prior 2 years, with the exception of MDS and plasma cell dyscrasias, or non-melanoma skin cancers that have been treated.
* History of clinically significant cardiovascular disease or clinically significant abnormalities in rhythm or conduction during screening EKG, including severe cardiac events, symptomatic congestive heart failure, unstable angina pectoris, uncontrolled cardiac arrhythmia, or heart failure.
* Currently receiving immunosuppressants (other than corticosteroids), disease-modifying antirheumatic drugs (DMARDs), or biologic cytokine inhibitors. Patients may be eligible after 28 day washout.
* A history of allergic reactions attributed to compounds of similar chemical or biologic composition to pacritinib.
* Concurrent use of strong CYP3A4 inhibitors or inducers. Patients may be eligible after washout period of 28 days (or 5 half-lives, whichever is shorter).
* Diagnosis or history of moderate (Child-Pugh B) and severe hepatic impairment (Child-Pugh C).
* Pregnant and/or breastfeeding. Women of childbearing potential must have a negative serum pregnancy test within 7 days of C1D1 or negative urine pregnancy test within 3 days of C1D1.
* Known active viral infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV).
* Patients with latent tuberculosis. Patients must have a negative T-Spot during screening to be eligible.

Contacts and Locations

Study Contact

Meagan A Jacoby, M.D., Ph.D.

CONTACT

314-454-8306

mjacoby@wustl.edu

Principal Investigator

Meagan A Jacoby, M.D., Ph.D.

PRINCIPAL_INVESTIGATOR

Washington University School of Medicine

Study Locations (Sites)

Washington University School of Medicine

Saint Louis, Missouri, 63110

United States

Collaborators and Investigators

Sponsor: Washington University School of Medicine

Meagan A Jacoby, M.D., Ph.D., PRINCIPAL_INVESTIGATOR, Washington University School of Medicine

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2025-02-13

Study Completion Date2029-02-28

Study Record Updates

Study Start Date2025-02-13

Study Completion Date2029-02-28

Terms related to this study

Keywords Provided by Researchers

VEXAS
Autoinflammatory
UBA1
Pacritinib

Additional Relevant MeSH Terms

E1 Ubiqutin-activating Enzyme, X-linked, Autoinflammatory, Somatic Syndrome
VEXAS
Vexas Syndrome