Difference between revisions of "Pacritinib (Vonjo)"

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From the [http://www.cancer.gov/drugdictionary?CdrID=609888 NCI Drug Dictionary]: An orally bioavailable inhibitor of Janus kinase 2 (JAK2) and the JAK2 mutant JAK2V617F with potential antineoplastic activity. Pacritinib competes with JAK2 for ATP binding, which may result in inhibition of JAK2 activation, inhibition of the JAK-STAT signaling pathway, and so caspase-dependent apoptosis. Also, per [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256753/ Hart et al. 2011] pacritinib is a tyrosine kinase inhibitor (TKI) with equipotent activity against FLT3 (IC<sub>50</sub>=22 n) and Janus kinase 2 (JAK2, IC<sub>50</sub>=23 n).  
 
From the [http://www.cancer.gov/drugdictionary?CdrID=609888 NCI Drug Dictionary]: An orally bioavailable inhibitor of Janus kinase 2 (JAK2) and the JAK2 mutant JAK2V617F with potential antineoplastic activity. Pacritinib competes with JAK2 for ATP binding, which may result in inhibition of JAK2 activation, inhibition of the JAK-STAT signaling pathway, and so caspase-dependent apoptosis. Also, per [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3256753/ Hart et al. 2011] pacritinib is a tyrosine kinase inhibitor (TKI) with equipotent activity against FLT3 (IC<sub>50</sub>=22 n) and Janus kinase 2 (JAK2, IC<sub>50</sub>=23 n).  
  
==Preliminary data==
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==Diseases for which it is used==
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*[[Myelofibrosis]]
  
===[[Myelofibrosis]]===
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==History of changes in FDA indication==
# Komrokji RS, Seymour JF, Roberts AW, Wadleigh M, To LB, Scherber R, Turba E, Dorr A, Zhu J, Wang L, Granston T, Campbell MS, Mesa RA. Results of a phase 2 study of pacritinib (SB1518), a JAK2/JAK2(V617F) inhibitor, in patients with myelofibrosis. Blood. 2015 Apr 23;125(17):2649-55. Epub 2015 Mar 11. [http://www.bloodjournal.org/content/125/17/2649.long link to original article] [https://www.ncbi.nlm.nih.gov/pubmed/25762180 PubMed]
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*2022-03-01: Granted accelerated approval for the treatment of adults with intermediate or high-risk primary or secondary (post-polycythemia vera or post-essential thrombocythemia) [[myelofibrosis]] with a platelet count below 50 x 10<sup>9</sup>/L. ''(Based on PERSIST-2)''
# '''PERSIST-1:''' Mesa RA, Vannucchi AM, Mead A, Egyed M, Szoke A, Suvorov A, Jakucs J, Perkins A, Prasad R, Mayer J, Demeter J, Ganly P, Singer JW, Zhou H, Dean JP, Te Boekhorst PA, Nangalia J, Kiladjian JJ, Harrison CN. Pacritinib versus best available therapy for the treatment of myelofibrosis irrespective of baseline cytopenias (PERSIST-1): an international, randomised, phase 3 trial. Lancet Haematol. 2017 May;4(5):e225-e236. Epub 2017 Mar 20. [https://www.thelancet.com/journals/lanhae/article/PIIS2352-3026(17)30027-3/fulltext link to original article] [https://www.ncbi.nlm.nih.gov/pubmed/28336242 PubMed]
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# '''PERSIST-2:''' Mascarenhas J, Hoffman R, Talpaz M, Gerds AT, Stein B, Gupta V, Szoke A, Drummond M, Pristupa A, Granston T, Daly R, Al-Fayoumi S, Callahan JA, Singer JW, Gotlib J, Jamieson C, Harrison C, Mesa R, Verstovsek S. Pacritinib vs best available therapy, including ruxolitinib, in patients with myelofibrosis: a randomized clinical trial. JAMA Oncol. 2018 Mar 8. [Epub ahead of print] [https://jamanetwork.com/journals/jamaoncology/fullarticle/2674384 link to original article] [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5885169/ link to PMC article] [https://www.ncbi.nlm.nih.gov/pubmed/29522138 PubMed]
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==Also known as==
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*'''Code name:''' SB-1518
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*'''Brand name:''' Vonjo
  
 
[[Category:Drugs]]
 
[[Category:Drugs]]
 
[[Category:Oral medications]]
 
[[Category:Oral medications]]
  
[[Category:Kinase inhibitors]]
 
 
[[Category:FLT3 inhibitors]]
 
[[Category:FLT3 inhibitors]]
[[Category:JAK inhibitors]]
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[[Category:JAK2 inhibitors]]
  
 
[[Category:Myelofibrosis medications]]
 
[[Category:Myelofibrosis medications]]
  
[[Category:Investigational]]
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[[Category:FDA approved in 2022]]

Latest revision as of 11:25, 23 September 2023

Mechanism of action

From the NCI Drug Dictionary: An orally bioavailable inhibitor of Janus kinase 2 (JAK2) and the JAK2 mutant JAK2V617F with potential antineoplastic activity. Pacritinib competes with JAK2 for ATP binding, which may result in inhibition of JAK2 activation, inhibition of the JAK-STAT signaling pathway, and so caspase-dependent apoptosis. Also, per Hart et al. 2011 pacritinib is a tyrosine kinase inhibitor (TKI) with equipotent activity against FLT3 (IC50=22 n) and Janus kinase 2 (JAK2, IC50=23 n).

Diseases for which it is used

History of changes in FDA indication

  • 2022-03-01: Granted accelerated approval for the treatment of adults with intermediate or high-risk primary or secondary (post-polycythemia vera or post-essential thrombocythemia) myelofibrosis with a platelet count below 50 x 109/L. (Based on PERSIST-2)

Also known as

  • Code name: SB-1518
  • Brand name: Vonjo