Ponesimod

Ponesimod (INN, codenamed ACT-128800) is an experimental drug for the treatment of multiple sclerosis (MS) and psoriasis. It is being developed by Actelion.

Ponesimod
Clinical data
Other namesACT-128800
Routes of
administration		Oral
ATC code
  • none
Legal status
Legal status
  • Investigational
Pharmacokinetic data
Metabolism2 main metabolites
Elimination half-life31–34 hrs[1]
ExcretionFeces (57–80%, 26% unchanged), urine (10–18%)[2]
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
Chemical and physical data
FormulaC23H25ClN2O4S
Molar mass460.97 g·mol−1
3D model (JSmol)

Clinical trials

In a 2009–2011 Phase II clinical trial including 464 MS patients, ponesimod treatment resulted in fewer new active brain lesions than placebo, measured during the course of 24 weeks.[3][4]

In a 2010–2012 Phase II clinical trial including 326 patients with psoriasis, 46 or 48% of patients (depending on dosage) had a reduction of at least 75% Psoriasis Area and Severity Index (PASI) score compared to placebo in 16 weeks.[3][5]

Adverse effects

Common adverse effects in studies were temporary bradycardia (slow heartbeat), usually at the beginning of the treatment, dyspnoea (breathing difficulties), and increased liver enzymes (without symptoms). No significant increase of infections was observed under ponesimod therapy.[3] QT prolongation is detectable but was considered to be too low to be of clinical importance in a study.[6]

Mechanism of action

Like fingolimod, which is already approved for the treatment of MS, ponesimod blocks the sphingosine-1-phosphate receptor. This mechanism prevents lymphocytes (a type of white blood cells) from leaving lymph nodes.[3] Ponesimod is selective for subtype 1 of this receptor, S1P1.[7]

gollark: UDP is not a stream-oriented protocol and yet you have to muck with sockets in convoluted ways.
gollark: As I said, the socket APIs map *terribly* onto this.
gollark: > does udp even work over IP multicast... yes.
gollark: I just have no idea why.
gollark: No, I know which calls caused the error.

See also

References
  1. Brossard P, Scherz M, Halabi A, Maatouk H, Krause A, Dingemanse J (February 2014). "Multiple-dose tolerability, pharmacokinetics, and pharmacodynamics of ponesimod, an S1P1 receptor modulator: favorable impact of dose up-titration". Journal of Clinical Pharmacology. 54 (2): 179–88. doi:10.1002/jcph.244. PMID 24408162.
  2. Reyes M, Hoch M, Brossard P, Wagner-Redeker W, Miraval T, Dingemanse J (February 2015). "Mass balance, pharmacokinetics and metabolism of the selective S1P1 receptor modulator ponesimod in humans". Xenobiotica; the Fate of Foreign Compounds in Biological Systems. 45 (2): 139–49. doi:10.3109/00498254.2014.955832. PMID 25188442. S2CID 23905158.
  3. Spreitzer H (29 September 2014). "Neue Wirkstoffe – Ponesimod". Österreichische Apothekerzeitung (in German) (20/2014): 42.
  4. Olsson T, Boster A, Fernández Ó, Freedman MS, Pozzilli C, Bach D, et al. (November 2014). "Oral ponesimod in relapsing-remitting multiple sclerosis: a randomised phase II trial". Journal of Neurology, Neurosurgery, and Psychiatry. 85 (11): 1198–208. doi:10.1136/jnnp-2013-307282. PMC 4215282. PMID 24659797.
  5. Vaclavkova A, Chimenti S, Arenberger P, Holló P, Sator PG, Burcklen M, et al. (December 2014). "Oral ponesimod in patients with chronic plaque psoriasis: a randomised, double-blind, placebo-controlled phase 2 trial". Lancet. 384 (9959): 2036–45. doi:10.1016/S0140-6736(14)60803-5. PMID 25127208. S2CID 20452934.
  6. Hoch M, Darpo B, Brossard P, Zhou M, Stoltz R, Dingemanse J (May 2015). "Effect of ponesimod, a selective S1P1 receptor modulator, on the QT interval in healthy individuals". Basic & Clinical Pharmacology & Toxicology. 116 (5): 429–37. doi:10.1111/bcpt.12336. PMID 25287214.
  7. "Ponesimod". Actelion. Archived from the original on 3 December 2011. Retrieved 31 October 2014.
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