Asenapine

Source: Wikipedia, the free encyclopedia.
Asenapine
Skeletal formula of asenapine
Ball-and-stick model of the asenapine molecule
Clinical data
Trade namesSaphris, Sycrest, Secuado
Other namesORG-5222
AHFS/Drugs.comMonograph
MedlinePlusa610015
License data
Pregnancy
category
  • AU: C
Routes of
administration		Sublingual, transdermal
Drug classAtypical antipsychotic
ATC code
Legal status
Legal status
Faecal (40%; ~5–16% as unchanged drug in faeces)[5][6][3][7]
Identifiers
  • (3aRS,12bRS)-rel-5-Chloro-2,3,3a,12b-tetrahydro-
    2-methyl-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole
JSmol)
  • Clc4cc2c(Oc1c(cccc1)[C@@H]3CN(C[C@@H]23)C)cc4
  • InChI=1S/C17H16ClNO/c1-19-9-14-12-4-2-3-5-16(12)20-17-7-6-11(18)8-13(17)15(14)10-19/h2-8,14-15H,9-10H2,1H3/t14-,15-/m0/s1 checkY
  • Key:VSWBSWWIRNCQIJ-GJZGRUSLSA-N checkY

  • as salt: InChI=1S/C17H16ClNO.C4H4O4/c1-19-9-14-12-4-2-3-5-16(12)20-17-7-6-11(18)8-13(17)15(14)10-19;5-3(6)1-2-4(7)8/h2-8,14-15H,9-10H2,1H3;1-2H,(H,5,6)(H,7,8)/b;2-1-/t14-,15-;/m1./s1
  • Key:GMDCDXMAFMEDAG-CHHFXETESA-N
 ☒NcheckY (what is this?)  (verify)

Asenapine, sold under the brand name Saphris among others, is an atypical antipsychotic medication used to treat schizophrenia and acute mania associated with bipolar disorder as well as the medium to long-term management of bipolar disorder.[4][10]

It was chemically derived via altering the chemical structure of the tetracyclic (atypical) antidepressant, mianserin.[11]

It was initially approved in the United States in 2009

generic medication in 2020.[13]

Medical uses

Asenapine has been approved by the FDA for the acute treatment of adults with schizophrenia and acute treatment of manic or mixed episodes associated with bipolar I disorder with or without psychotic features in adults.[12] In Australia asenapine's approved (and also listed on the PBS) indications include the following:[14]

  • Schizophrenia
  • Treatment, for up to 6 months, of an episode of acute mania or mixed episodes associated with bipolar I disorder
  • Maintenance treatment, as monotherapy, of bipolar I disorder

In the European Union and the United Kingdom, asenapine is only licensed for use as a treatment for acute mania in bipolar I disorder.[3][7][4]

Asenapine is absorbed readily if administered

sublingually, asenapine is poorly absorbed when swallowed.[15] A transdermal formulation of asenapine was approved in the United States in October 2019 under the brand name Secuado.[8]

Schizophrenia

A Cochrane systematic review found that while Asenapine has some preliminary evidence that it improves positive, negative, and depressive symptoms, it does not have enough research to merit a certain recommendation of asenapine for the treatment of schizophrenia.[16]

Bipolar disorder

For the medium-term and long-term management and control of both depressive and manic features of bipolar disorder asenapine was found be equally effective as olanzapine, but with a substantially superior side effect profile.[10]

In acute mania, asenapine was found to be significantly superior to placebo.

post-hoc analysis of two 3-week clinical trials it may possess some antidepressant effects in patients with acute mania or mixed episodes.[18]

Adverse effects

Adverse effect incidence[5][6][3][7]

Very common (>10% incidence) adverse effects include:

Common (1–10% incidence) adverse effects include:

Uncommon (0.1–1% incidence) adverse effects include:

Rare (0.01–0.1% incidence) adverse effects include:

Unknown incidence adverse effects

  • Allergic reaction
  • Restless legs syndrome
  • Oral mucosal lesions (ulcerations, blistering and inflammation)
  • Salivary hypersecretion
  • Hyperprolactinaemia

† Asenapine seems to have a relatively low weight gain liability for an

p=0.05 level) as much as weight gain as aripiprazole (SMD: 0.17; 95% CI: 0.05-0.28), lurasidone (SMD: 0.10; 95% CI: –0.02-0.21), amisulpride (SMD: 0.20; 95% CI: 0.05-0.35), haloperidol (SMD: 0.09; 95% CI: 0.00-0.17) and ziprasidone (SMD: 0.10; 95% CI: –0.02-0.22).[21] Its potential for elevating plasma prolactin levels seems relatively limited too according to this meta-analysis.[21] This meta-analysis also found that asenapine has approximately the same odds ratio (3.28; 95% CI: 1.37-6.69) for causing sedation [compared to placebo-treated patients] as olanzapine (3.34; 95% CI: 2.46-4.50]) and haloperidol (2.76; 95% CI: 2.04-3.66) and a higher odds ratio (although not significantly) for sedation than aripiprazole (1.84; 95% CI: 1.05-3.05), paliperidone (1.40; 95% CI: 0.85-2.19) and amisulpride (1.42; 95% CI: 0.72 to 2.51) to name a few and is hence a mild-moderately sedating antipsychotic.[21] The same meta-analysis suggested that asenapine had a relatively high risk of extrapyramidal symptoms compared to other atypical antipsychotics but a lower risk than first-generation or typical antipsychotics.[21]

Discontinuation

For all antipsychotics, the British National Formulary recommends a gradual dose reduction when discontinuing to avoid acute withdrawal syndrome or rapid relapse.[22] Symptoms of withdrawal commonly include nausea, vomiting, and loss of appetite.[23] Other symptoms may include restlessness, increased sweating, and trouble sleeping.[23] Less commonly there may be a feeling of the world spinning, numbness, or muscle pains.[23] Symptoms generally resolve after a short period of time.[23]

There is tentative evidence that discontinuation of antipsychotics can result in psychosis as a transient withdrawal symptom.[24] It may also result in recurrence of the condition that is being treated.[25] Rarely tardive dyskinesia can occur when the medication is stopped.[23]

Pharmacology

Pharmacodynamics

See also: Atypical antipsychotic § Pharmacodynamics, and Antipsychotic § Comparison of medications
Asenapine[26][12]
Site pKi Ki (nM) Action
5-HT1A 8.6 2.5 Partial agonist
5-HT1B 8.4 4.0 Antagonist
5-HT2A 10.2 0.06 Antagonist
5-HT2B 9.8 0.16 Antagonist
5-HT2C 10.5 0.03 Antagonist
5-HT5A 8.8 1.6 Antagonist
5-HT6 9.5 0.25 Antagonist
5-HT7 9.9 0.13 Antagonist
α1 8.9 1.2 Antagonist
α2A 8.9 1.2 Antagonist
α2B 9.5 0.32 Antagonist
α2C 8.9 1.2 Antagonist
D1
 8.9 1.4 Antagonist
D2
 8.9 1.3 Antagonist
D3
 9.4 0.42 Antagonist
D4
 9.0 1.1 Antagonist
H1
 9.0 1.0 Antagonist
H2
 8.2 6.2 Antagonist
mACh <5 8128 Antagonist

Asenapine shows high

5-HT7 (9.9) receptors, the adrenergic α1 (8.9), α2A (8.9), α2B (9.5), and α2C (8.9) receptors, the dopamine D1 (8.9), D2 (8.9), D3 (9.4), and D4 (9.0) receptors, and the histamine H1 (9.0) and H2 (8.2) receptors. It has much lower affinity (pKi < 5) for the muscarinic acetylcholine receptors. Asenapine behaves as a partial agonist at the 5-HT1A receptors.[27] At all other targets asenapine is an antagonist.[26]

Even relative to other atypical antipsychotics, asenapine has unusually high affinity for the

H1 receptors.[26]

Notes

  1. ^ The Phase III trials used for FDA approval in the US used lists of "elicited side effects", asking all subjects about each side effect on the list, and "nausea" was not included. The elicited side effects list included the related symptoms of "dyspepsia", "stomach discomfort", and "vomiting", and the incidence of each was higher than placebo and in the range of 1 to 10% of asenapine-treated subjects.[6]

References

  1. FDA
    . Retrieved 22 Oct 2023.
  2. ^ Anvisa (2023-03-31). "RDC Nº 784 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 784 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-04-04). Archived from the original on 2023-08-03. Retrieved 2023-08-16.
  3. ^ a b c d e f g h "Sycrest 5mg sublingual tablets - Summary of Product Characteristics (SmPC)". (emc). Retrieved 9 September 2020.
  4. ^ a b c "Sycrest EPAR". European Medicines Agency (EMA). 17 September 2018. Retrieved 9 September 2020.
  5. ^ a b c d e f "Product Information Saphris (asenapine maleate)" (PDF). TGA eBusiness Services. Merck Sharp & Dohme (Australia) Pty Limited. 14 January 2013. Retrieved 23 October 2013.
  6. ^ a b c d e f g "Saphris (asenapine maleate) tablet". DailyMed. Organon Pharmaceuticals. March 2013. Retrieved 23 October 2013.
  7. ^ a b c d e f g "Product information Sycrest – EMEA/H/C/001177 –II/0012" (PDF). European Medicines Agency. N.V. Organon. 21 February 2013. Archived from the original (PDF) on 28 July 2017. Retrieved 23 October 2013.
  8. ^
    PMID 32943849
    .
  9. ^
    PMID 33734167
    .
  10. ^
    S2CID 20871442
    .
  11. PMID 20642375
    .
  12. ^ a b c "Saphris (asenapine) prescribing information" (PDF). Schering Corporation. 2009-08-01. Archived from the original (PDF) on 2009-11-22. Retrieved 2009-09-05.
  13. ^ "First Generic Drug Approvals". U.S. Food and Drug Administration (FDA). Retrieved 13 February 2021.
  14. ISBN 978-0-9805790-9-3
    .
  15. PMID 22494521
    .
  16. PMID 26599405
    .
  17. S2CID 25512763
    .
  18. PMID 21689438
    .
  19. ^ Washington NB, Brahm NC, Kissack J (October 2012). "Which psychotropics carry the greatest risk of QTc prolongation?". Current Psychiatry. 11 (10): 36–39. Retrieved 14 April 2017.
  20. ISBN 978-0-470-97948-8
    .
  21. ^
    S2CID 32085212
    .
  22. ISBN 978-0-85369-845-6
    . Withdrawal of antipsychotic drugs after long-term therapy should always be gradual and closely monitored to avoid the risk of acute withdrawal syndromes or rapid relapse.
  23. ^
    ISBN 9780198527480
    .
  24. S2CID 6267180
    .
  25. ISBN 9788847026797
    .
  26. ^
    S2CID 206489515
    .
  27. S2CID 140204044
    .

External links

  • "Asenapine". Drug Information Portal. U.S. National Library of Medicine.
  • "Asenapine maleate". Drug Information Portal. U.S. National Library of Medicine.