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Pacritinib Citrate

FDA-approved product (capsule, oral), marketed as Vonjo.

Registered studies
2
Lab records
0
Pathogens at ≥40%
3 of 4

Chemical structure

Chemical structure of Pacritinib Citrate
A drawing shows what the molecule is, not what it does.

Existing / approved use

Documented · FDA, WHO, ChEMBL

Approved for

  • Neoplasm
  • Polycythemia vera
  • Primary myelofibrosis

Indications ChEMBL records as approved, from FDA and DailyMed labels. Label ↗

WHO therapeutic group
Janus-associated kinase (jak) inhibitors
FDA pharmacologic class
Kinase Inhibitor FDA label ↗
Anti-infective classification
Not classified as an anti-infective.

Repurposing investigation

This medicine is being investigated here for AI-predicted antimicrobial activity against M. tuberculosis, MRSA and E. coli. It was surfaced computationally for further investigation; it is not an established treatment for these infections.

AI-predicted activity

AI prediction · nothing measured
  • MRSA58.1% AI-predicted activityAt or above the ≥40% mark this site uses to surface candidates.
  • E. coli49.8% AI-predicted activityAt or above the ≥40% mark this site uses to surface candidates.
  • K. pneumoniae29.9% AI-predicted activityBelow the ≥40% mark this site uses to surface candidates.
  • M. tuberculosis62.2% AI-predicted activityAt or above the ≥40% mark this site uses to surface candidates.

A model’s estimate of laboratory activity against each pathogen species. It is not clinical effectiveness.

Evidence

Clinical and experimental

Documented evidence

Clinical

2registered studies name this medicine, for any condition. See them below.

Experimental

No evidence found

No laboratory measurement against the four pathogens in the ChEMBL records loaded here.

Docking

Computational · nothing measured

Dihydrofolate reductase ↗ (E. coli)

-5.8 kcal/mol

0better fit →-12

KPC-2 carbapenemase ↗ (K. pneumoniae)

-6.1 kcal/mol

0better fit →-12

Enoyl-ACP reductase (InhA) ↗ (M. tuberculosis)

-6.9 kcal/mol

0better fit →-12

Dihydrofolate reductase ↗ (MRSA)

-6.6 kcal/mol

0better fit →-12

AutoDock Vina, one experimentally solved protein per pathogen. This project’s screening target is -7.0 kcal/mol, its own mark rather than a universal cutoff. A docking score is a structural hypothesis, not proof of binding, and requires experimental validation.

Other medicines to investigate

AI prediction · nothing measured

Other repurposing candidates: approved medicines besides Pacritinib Citrate with AI-predicted activity ≥40% against the chosen pathogen, leaving out existing antimicrobials. They are computational candidates for further investigation, not alternatives and not recommendations.

Sorted by AI-predicted activity, high to low. The order is not a ranking of which medicine is better.

Registered studies

A registration describes a study; it does not establish a positive result.

  • A Phase 2 Study to Evaluate the Safety and Efficacy of Pacritinib in Relapsed or Refractory Waldenström Macroglobulinemia

    NCT06986174 · start 2025-11-21

    Registered record
    Registry ID
    NCT06986174
    Conditions
    Waldenström Macroglobulinemia; Lymphoplasmacytic Lymphoma; B-Cell Lymphoproliferative Disorder; Indolent Lymphoma
    Interventions
    Pacritinib
    Study type
    INTERVENTIONAL
    Phase
    Phase 2
    Registry status
    Recruiting
    Start
    2025-11-21
    Completion
    2032-10-01
    Enrolment
    30

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionWaldenström Macroglobulinemia; Lymphoplasmacytic Lymphoma; B-Cell Lymphoproliferative Disorder; Indolent Lymphoma
    InterventionPacritinib
    PhasePhase 2
    Registry statusRecruiting
  • A Phase 3 Study of Pacritinib in Patients With Primary Myelofibrosis, Post Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocythemia Myelofibrosis

    NCT03165734 · start 2017-06-26

    Registered record
    Registry ID
    NCT03165734
    Conditions
    Primary Myelofibrosis; Post-polycythemia Vera Myelofibrosis; Post-essential Thrombocythemia Myelofibrosis
    Interventions
    Pacritinib; Physician's Choice medications
    Study type
    INTERVENTIONAL
    Phase
    Phase 3
    Registry status
    Active not recruiting
    Start
    2017-06-26
    Completion
    2028-10-13
    Enrolment
    407

    As stored from ClinicalTrials.gov. Registration describes a study; it does not mean the study worked.

    ConditionPrimary Myelofibrosis; Post-polycythemia Vera Myelofibrosis; Post-essential Thrombocythemia Myelofibrosis
    InterventionPacritinib; Physician's Choice medications
    PhasePhase 3
    Registry statusActive not recruiting