Pacritinib

Last updated

Pacritinib
Pacritinib skeletal.svg
Clinical data
Trade names Vonjo
Other namesSB1518
License data
Routes of
administration
By mouth
ATC code
Legal status
Legal status
Identifiers
  • (16E)-11-[2-(1-Pyrrolidinyl)ethoxy]-14,19-dioxa-5,7,26-triazatetracyclo[19.3.1.12,6.18,12]heptacosa-1(25),2(26),3,5,8,10,12(27),16,21,23-decaene
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
PDB ligand
Chemical and physical data
Formula C28H32N4O3
Molar mass 472.589 g·mol−1
3D model (JSmol)
  • c1cc2cc(c1)-c3ccnc(n3)Nc4ccc(c(c4)COC/C=C/COC2)OCCN5CCCC5
  • InChI=1S/C28H32N4O3/c1-2-13-32(12-1)14-17-35-27-9-8-25-19-24(27)21-34-16-4-3-15-33-20-22-6-5-7-23(18-22)26-10-11-29-28(30-25)31-26/h3-11,18-19H,1-2,12-17,20-21H2,(H,29,30,31)/b4-3+
  • Key:HWXVIOGONBBTBY-ONEGZZNKSA-N

Pacritinib, sold under the brand name Vonjo, is an anti-cancer medication used to treat myelofibrosis. [1] [2] It is a macrocyclic protein kinase inhibitor. It mainly inhibits Janus kinase 2 (JAK2) and Fms-like tyrosine kinase 3\CD135 (FLT3).

Contents

Common side effects include diarrhea, low platelet counts, nausea, anemia, and swelling in legs. [2]

Medical uses

Pacritinib in indicated to treat adults who have a rare form of a bone marrow disorder known as intermediate or high-risk primary or secondary myelofibrosis and who have platelet (blood clotting cells) levels below 50,000/µL. [1] [2]

History

The effectiveness and safety of pacritinib were demonstrated in a study that included 63 participants with intermediate or high-risk primary or secondary myelofibrosis and low platelets who received pacritinib 200 mg twice daily or standard treatment. [2] Effectiveness was determined based upon the proportion of participants who had a 35% or greater spleen volume reduction from baseline to week 24. [2] Nine participants (29%) in the pacritinib treatment group had a 35% or greater spleen volume reduction, compared to one participant (3%) in the standard treatment group. [2]

The U.S. Food and Drug Administration (FDA) granted the application for pacritinib priority review, fast track, and orphan drug designations. [2]

Society and culture

Names

Pacritinib is the International nonproprietary name (INN). [3] [4]

Related Research Articles

Primary myelofibrosis (PMF) is a rare bone marrow blood cancer. It is classified by the World Health Organization (WHO) as a type of myeloproliferative neoplasm, a group of cancers in which there is activation and growth of mutated cells in the bone marrow. This is most often associated with a somatic mutation in the JAK2, CALR, or MPL genes. In PMF, the bony aspects of bone marrow are remodeled in a process called osteosclerosis; in addition, fibroblast secrete collagen and reticulin proteins that are collectively referred to as (fibrosis). These two pathological processes compromise the normal function of bone marrow resulting in decreased production of blood cells such as erythrocytes, granulocytes and megakaryocytes, the latter cells responsible for the production of platelets.

A Janus kinase inhibitor, also known as JAK inhibitor or jakinib, is a type of immune modulating medication, which inhibits the activity of one or more of the Janus kinase family of enzymes, thereby interfering with the JAK-STAT signaling pathway in lymphocytes.

<span class="mw-page-title-main">Ruxolitinib</span> Medication

Ruxolitinib, sold under the brand name Jakafi among others, is a medication used for the treatment of intermediate or high-risk myelofibrosis, a type of myeloproliferative neoplasm that affects the bone marrow; polycythemia vera, when there has been an inadequate response to or intolerance of hydroxyurea; and steroid-refractory acute graft-versus-host disease. Ruxolitinib is a Janus kinase inhibitor. It was developed and marketed by Incyte Corp in the US under the brand name Jakafi, and by Novartis elsewhere in the world, under the brand name Jakavi.

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References

  1. 1 2 3 "Vonjo- pacritinib capsule". DailyMed. 7 March 2022. Retrieved 24 March 2022.
  2. 1 2 3 4 5 6 7 8 "FDA approves drug for adults with rare form of bone marrow disorder". U.S. Food and Drug Administration. 1 March 2022. Retrieved 3 March 2022.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. World Health Organization (2010). "International nonproprietary names for pharmaceutical substances (INN). proposed INN: list 104" (PDF). WHO Drug Information. 24 (4): 386. hdl: 10665/74579 .
  4. World Health Organization (2011). "International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 66". WHO Drug Information. 25 (3). hdl: 10665/74683 .