Baricitinib
Clinical data
Trade namesOlumiant, others
Other namesINCB28050, LY3009104
AHFS/Drugs.comMonograph
MedlinePlusa618033
License data
Pregnancy
category
  • AU: D[1][2]
  • Use is contraindicated
Routes of
administration		By mouth
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability79%
Protein binding50%
MetabolismCYP3A4 (<10%)
Elimination half-life12.5 hours
Excretion75% urine, 20% faeces
Identifiers
  • 2-[1-Ethylsulfonyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]azetidin-3-yl]acetonitrile
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
PDB ligand
CompTox Dashboard (EPA)
ECHA InfoCard100.219.080
Chemical and physical data
FormulaC16H17N7O2S
Molar mass371.42 g·mol−1
3D model (JSmol)
  • CCS(=O)(=O)N1CC(CC#N)(n2cc(-c3ncnc4[nH]ccc34)cn2)C1
  • InChI=1S/C16H17N7O2S/c1-2-26(24,25)22-9-16(10-22,4-5-17)23-8-12(7-21-23)14-13-3-6-18-15(13)20-11-19-14/h3,6-8,11H,2,4,9-10H2,1H3,(H,18,19,20)
  • Key:XUZMWHLSFXCVMG-UHFFFAOYSA-N

Baricitinib, sold under the brand name Olumiant among others, is an immunomodulatory medication used for the treatment of rheumatoid arthritis, alopecia areata, and COVID-19.[6][7][8][9] It acts as an inhibitor of janus kinase (JAK), blocking the subtypes JAK1 and JAK2.[10]

Baricitinib is approved for medical use in the European Union[7] and in the United States.[8][11][9]

Medical uses

In February 2017, baricitinib was approved for use in the European Union as a second-line therapy for moderate to severe active rheumatoid arthritis in adults, either alone or in combination with methotrexate.[12][7]

In May 2018, the US Food and Drug Administration (FDA) approved baricitinib for the treatment of adults with moderately to severely active rheumatoid arthritis who have had an inadequate response to one or more TNF antagonist therapies.[11][8][6]

In May 2022, the FDA approved baricitinib for the treatment of COVID-19 in hospitalized adults requiring supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation (ECMO).[6][13][14] baricitinib is the first immunomodulatory treatment for COVID-19 to receive FDA approval.[14]

In the United States, baricitinib is authorized under an emergency use authorization (EUA) for the treatment of COVID-19 in hospitalized people aged 2 to less than 18 years of age who require supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation.[13]

In June 2022, the FDA authorized baricitinib for the treatment of severe alopecia areata.[9][15]

Contraindications

During pregnancy, the use of baricitinib is contraindicated.[2][12]

Side effects

In studies, upper respiratory tract infections and high blood cholesterol levels (hypercholesterolemia) occurred in more than 10% of participants. Less common side effects included other infections such as herpes zoster, herpes simplex, urinary tract infections, and gastroenteritis.[12]

Interactions

Being metabolized only to a small extent, the substance has a low potential for interactions. In studies, inhibitors of the liver enzymes CYP3A4, CYP2C19, and CYP2C9, as well as the CYP3A4 inducer rifampicin, had no relevant influence on baricitinib concentrations in the bloodstream. While baricitinib blocks a number of transporter proteins in vitro, clinically relevant interactions via this mechanism are considered very unlikely, except perhaps for the cation transporter SLC22A1 (OCT1).[12]

An additive effect with other immunosuppressants cannot be excluded.[12]

Pharmacology

Mechanism of action

Baricitinib is a Janus kinase (JAK) inhibitor that reversibly inhibits Janus kinase 1 with a half maximal inhibitory concentration (IC50) of 5.9 nM and Janus kinase 2 with an IC50 of 5.7 nM. Tyrosine kinase 2, which belongs to the same enzyme family, is affected less (IC50 = 53 nM), and Janus kinase 3 far less (IC50 > 400 nM). Via a signal transduction pathway involving STAT proteins, this ultimately modulates gene expression in immunological cells.[12]

Other JAK inhibitors include tofacitinib, which is indicated for the treatment of rheumatoid arthritis, psoriatic arthritis, and ulcerative colitis;[16][17] fedratinib,[18] and ruxolitinib.[19][20]

Pharmacokinetics

The substance is quickly absorbed from the gut with an absolute bioavailability of 79%. It reaches highest blood plasma levels after about an hour; in different individuals the time to reach this level ranges from 0.5 to 3 hours. Food intake has no relevant influence on the drug's pharmacokinetics. 50% of the circulating baricitinib are bound to blood plasma proteins.[12]

Less than 10% of the substance is metabolized to four different oxidation products by CYP3A4; the rest is left unchanged. Elimination half-life is 12.5 hours on average. About 75% is eliminated via the urine, and 20% via the faeces.[12]

History

Baricitinib was discovered by Incyte and licensed to Eli Lilly.[21]

Society and culture

In January 2016, Eli Lilly submitted a new drug application to the US Food and Drug Administration (FDA) for the approval of baricitinib to treat moderately-to-severely active rheumatoid arthritis.[22]

In December 2016, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) recommended the approval of baricitinib as a therapy for rheumatoid arthritis.[10] European Union approval was granted in February 2017.[7]

Despite widespread expectations that the FDA would approve baricitinib for rheumatoid arthritis,[23] in April 2017, the FDA issued a rejection, citing concerns about dosing and safety.[24][25]

In May 2018, baricitinib was approved in the United States for the treatment of rheumatoid arthritis.[8][11][9]

In March 2020, the US FDA granted breakthrough therapy designation to baricitinib for the treatment of alopecia areata[26] and granted approval in June 2022.[15]

The efficacy and safety of baricitinib in alopecia areata was studied in two randomized, double-blind, placebo-controlled trials (Trial AA-1 and Trial AA-2) with participants who had at least 50% scalp hair loss as measured by the Severity of Alopecia Tool for more than six months.[9] Participants in these trials received either a placebo, 2 milligrams of baricitinib, or 4 milligrams of baricitinib every day.[9] The primary measurement of efficacy for both trials was the proportion of participants who achieved at least 80% scalp hair coverage at week 36.[9]

Research

As of August 2016, 31 clinical trials had been registered for baricitinib of which 24 had completed,[27] and 4 of 6 phase 3 trials had completed.[28]

As of March 2022, a phase III clinical trial showed hair regrowth for those with alopecia areata.[29]

COVID-19

In April 2020, Lilly announced they were investigating the use of baricitinib for treating people with COVID-19. The drug's anti-inflammatory activity was expected to act on the inflammatory cascade associated with COVID-19.[30][31]

In April and June 2020, the first two studies of baricitinib prescribed for hospitalized people with COVID-19 were published online.[32][33] Then in November 2020, published research showed baricitinib was beneficial in treating people with COVID-19. According to the paper "mechanistic actions of a Janus kinase-1/2 inhibitor targeting viral entry, replication and the cytokine storm, and is associated with beneficial outcomes including in severely ill elderly people".[34]

In a clinical trial of hospitalized people with COVID-19, baricitinib, in combination with remdesivir, was shown to reduce time to recovery within 29 days after initiating treatment compared to participants who received a placebo with remdesivir.[35]

The data supporting the US Food and Drug Administration (FDA) emergency use authorization (EUA) for baricitinib combined with remdesivir was based on a randomized, double-blind, placebo-controlled clinical trial (ACTT-2), which was conducted by the US National Institute of Allergy and Infectious Diseases (NIAID).[36][37] This clinical trial evaluated whether baricitinib impacted how long it took for subjects who were also taking remdesivir to recover from COVID-19.[36] The trial followed participants for 29 days and included 1,033 participants with moderate or severe COVID-19; 515 participants received baricitinib plus remdesivir, and 518 participants received placebo plus remdesivir.[36] Recovery was defined as either being discharged from the hospital or being hospitalized but not requiring supplemental oxygen and no longer requiring ongoing medical care.[36] The median time to recovery from COVID-19 was seven days for baricitinib plus remdesivir and eight days for placebo plus remdesivir.[36] The odds of a patient's condition progressing to death or being ventilated at day 29 was 31% lower in the baricitinib plus remdesivir group versus the placebo plus remdesivir group.[36] The odds of clinical improvement at day 15 was 30% higher in the baricitinib plus remdesivir group versus the placebo plus remdesivir group.[36] For all of these endpoints, the effects were statistically significant.[36] The EUA was issued to Eli Lilly and Company.[36]

In November 2020, the World Health Organization (WHO) updated its guideline on therapeutics for COVID-19 to include a conditional recommendation against the use of remdesivir, triggered by results from the WHO Solidarity trial.[38][39]

In November 2020, the FDA issued an emergency use authorization (EUA) for the combination of baricitinib with remdesivir, for the treatment of suspected or laboratory confirmed COVID-19 in hospitalized people aged two years of age or older requiring supplemental oxygen, invasive mechanical ventilation, or extracorporeal membrane oxygenation (ECMO).[40][41][36]

Then in September 2021, the largest randomized, placebo-controlled trial of hospitalized people with COVID-19 to date, COV-BARRIER, was published.[42] This trial randomized 1525 participants to either baricitinib or placebo. Nearly 80% of participants were receiving systemic corticosteroids at enrollment. There was an absolute risk reduction of 2.7 percent in the primary endpoint of progression to high-flow oxygen, non-invasive ventilation, invasive mechanical ventilation, or death by day 28. The 38.2% statistically significant reduction in all-cause 28-day mortality for participants receiving baricitinib compared to placebo was the largest mortality reduction to date and maintained at 60 days. This translates into one additional death prevented for every 20 participants treated with baricitinib. The frequencies of serious adverse events were lower for participants receiving baricitinib compared to those receiving placebo.

As of April 2021, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) is evaluating the use of baricitinib to include treatment of COVID-19 in hospitalized people from ten years of age who require supplemental oxygen.[43]

In July 2021, the FDA revised the EUA for baricitinib authorizing it alone for the treatment of COVID-19 in hospitalized people aged two years of age or older requiring supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation (ECMO).[40][41][44] Under the revised EUA, baricitinib is not required to be administered with remdesivir.[44]

As of January 2022, the World Health Organization recommends baricitinib for people with severe or critical COVID-19.[45] Thereafter in February 2022, an exploratory randomized, placebo-controlled trial of participants receiving invasive mechanical ventilation or extracorporeal membrane oxygenation were randomly to baricitinib or placebo. There was a 46% statistically significant relative reduction in all-cause mortality for participants receiving baricitinib compared to those receiving placebo at 28 days which was sustained at 60 days.[46]

Then in May 2022, the FDA approved use of baricitinib for the treatment of adults hospitalized with COVID-19 who require supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation with a recommended dose of 4 mg once daily for 14 days or until hospital discharge, whichever happens first.[47]

In March 2022, the RECOVERY trial reported that the use of baricitinib cut the risk of death by about a fifth in about 12,000 participants.[48][49][50]

References

  1. 1 2 "Olumiant Product Information" (PDF). Therapeutic Goods Administration (TGA). Archived from the original on 20 September 2021. Retrieved 12 June 2021.
  2. 1 2 "Baricitinib (Olumiant) Use During Pregnancy". Drugs.com. 8 November 2019. Archived from the original on 26 June 2020. Retrieved 16 March 2020.
  3. ↑ "AusPAR: Baricitinib". Therapeutic Goods Administration (TGA). 20 May 2021. Archived from the original on 20 May 2021. Retrieved 11 June 2021.
  4. ↑ "Summary Basis of Decision (SBD) for Olumiant". Health Canada. 23 October 2014. Archived from the original on 31 May 2022. Retrieved 29 May 2022.
  5. ↑ "FDA-sourced list of all drugs with black box warnings (Use Download Full Results and View Query links.)". nctr-crs.fda.gov. FDA. Retrieved 22 October 2023.
  6. 1 2 3 4 "Olumiant- baricitinib tablet, film coated". DailyMed. 13 November 2019. Archived from the original on 27 September 2020. Retrieved 16 March 2020.
  7. 1 2 3 4 5 "Olumiant EPAR". European Medicines Agency (EMA). 3 December 2019. Archived from the original on 25 August 2021. Retrieved 17 March 2020. Text was copied from this source which is © European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
  8. 1 2 3 4 "Drug Trials Snapshots: Olumiant". U.S. Food and Drug Administration (FDA). 31 May 2018. Archived from the original on 13 December 2019. Retrieved 16 March 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  9. 1 2 3 4 5 6 7 "FDA Approves First Systemic Treatment for Alopecia Areata". U.S. Food and Drug Administration (FDA) (Press release). 13 June 2022. Archived from the original on 14 June 2022. Retrieved 13 June 2022. Public Domain This article incorporates text from this source, which is in the public domain.
  10. 1 2 "Summary of opinion for Olumiant" (PDF). European Medicines Agency (EMA). 15 December 2016. Archived (PDF) from the original on 15 March 2018. Retrieved 18 December 2016.
  11. 1 2 3 "Drug Approval Package: Olumiant (baricitinib)". U.S. Food and Drug Administration (FDA). 5 July 2018. Archived from the original on 28 April 2020. Retrieved 16 March 2020.
  12. 1 2 3 4 5 6 7 8 "Olumiant: EPAR – Product Information" (PDF). European Medicines Agency. 13 February 2017. Archived (PDF) from the original on 12 July 2018. Retrieved 7 June 2017.
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  14. 1 2 "FDA Roundup: May 10, 2022". U.S. Food and Drug Administration (FDA) (Press release). 10 May 2022. Archived from the original on 10 May 2022. Retrieved 10 May 2022.
  15. 1 2 "FDA Approves Lilly and Incyte's Olumiant (baricitinib) As First and Only Systemic Medicine for Adults with Severe Alopecia Areata" (Press release). Eli Lilly. 13 June 2022. Archived from the original on 14 June 2022. Retrieved 13 June 2022 – via PR Newswire.
  16. ↑ "Xeljanz- tofacitinib tablet, film coated Xeljanz XR- tofacitinib tablet, film coated, extended release". DailyMed. 20 December 2019. Archived from the original on 30 November 2020. Retrieved 28 April 2020.
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  18. ↑ "Inrebic- fedratinib hydrochloride capsule". DailyMed. 16 August 2019. Archived from the original on 6 April 2021. Retrieved 28 April 2020.
  19. ↑ Mesa RA (June 2010). "Ruxolitinib, a selective JAK1 and JAK2 inhibitor for the treatment of myeloproliferative neoplasms and psoriasis". IDrugs. 13 (6): 394–403. PMID 20506062.
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  24. ↑ Ramsey L (17 April 2017). "The FDA shot down a new rheumatoid arthritis drug — and the companies that make the drug are tumbling". Business Insider. Archived from the original on 11 January 2019. Retrieved 14 April 2017.
  25. ↑ Grant C (14 April 2017). "Surprise FDA Rejection Will Sting This Biotech". The Wall Street Journal. Archived from the original on 11 January 2019. Retrieved 14 April 2017.
  26. ↑ "Lilly Receives FDA Breakthrough Therapy Designation for Baricitinib for the Treatment of Alopecia Areata" (Press release). Eli Lilly and Company. 16 March 2020. Archived from the original on 17 March 2020. Retrieved 16 March 2020 – via PR Newswire.
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  28. ↑ "Baricitinib phase 3 clinical trials". ClinicalTrials.gov. Archived from the original on 4 February 2017. Retrieved 26 July 2017.
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  33. ↑ Titanji BK, Farley MM, Mehta A, Connor-Schuler R, Moanna A, Cribbs SK, et al. (8 April 2021). "Use of Baricitinib in Patients With Moderate to Severe Coronavirus Disease 2019". Clin Infect Dis. 72 (7): 1247–1250. doi:10.1093/cid/ciaa879. PMC 7337637. PMID 32597466.{{cite journal}}: CS1 maint: overridden setting (link)
  34. ↑ Stebbing J, Sánchez Nievas G, Falcone M, Youhanna S, Richardson P, Ottaviani S, et al. (January 2021). "JAK inhibition reduces SARS-CoV-2 liver infectivity and modulates inflammatory responses to reduce morbidity and mortality". Science Advances. 7 (1): eabe4724. Bibcode:2021SciA....7.4724S. doi:10.1126/sciadv.abe4724. PMC 7775747. PMID 33187978.{{cite journal}}: CS1 maint: overridden setting (link)
  35. ↑ Kalil AC, Patterson TF, Mehta AK, Tomashek KM, Wolfe CR, Ghazaryan V, et al. (4 March 2021). "Baricitinib plus Remdesivir for Hospitalized Adults with Covid-19". N Engl J Med. 384 (9): 795–807. doi:10.1056/NEJMoa2031994. PMC 7745180. PMID 33306283.{{cite journal}}: CS1 maint: overridden setting (link)
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  40. 1 2 "Baricitinib Emergency Use Authorization (EUA)" (PDF). U.S. Food and Drug Administration (FDA). July 2021. Archived from the original on 12 September 2021. Retrieved 31 July 2021.
  41. 1 2 "Fact Sheet for Baricitinib Emergency Use Authorization (EUA)" (PDF). U.S. Food and Drug Administration (FDA). July 2021. Archived from the original on 29 July 2021. Retrieved 31 July 2021.
  42. ↑ Marconi VC, Ramanan AV, de Bono S, Kartman CE, Krishnan V, Liao R, et al. (December 2021). "Efficacy and safety of baricitinib for the treatment of hospitalised adults with COVID-19 (COV-BARRIER): a randomised, double-blind, parallel-group, placebo-controlled phase 3 trial". Lancet Respir Med. 9 (12): 1407–1418. doi:10.1016/S2213-2600(21)00331-3. PMC 8409066. PMID 34480861.{{cite journal}}: CS1 maint: overridden setting (link)
  43. ↑ "EMA starts evaluating use of Olumiant in hospitalized COVID-19 patients requiring supplemental oxygen". European Medicines Agency (EMA). 29 April 2021. Archived from the original on 14 June 2022. Retrieved 25 April 2022.
  44. 1 2 "Coronavirus (COVID-19) Update: July 30, 2021". U.S. Food and Drug Administration (FDA) (Press release). 30 July 2021. Archived from the original on 30 July 2021. Retrieved 30 July 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  45. ↑ "WHO recommends two new drugs to treat COVID-19" (Press release).
  46. ↑ Ely EW, Ramanan AV, Kartman CE, de Bono S, Liao R, Piruzeli ML, et al. (April 2022). "Efficacy and safety of baricitinib plus standard of care for the treatment of critically ill hospitalised adults with COVID-19 on invasive mechanical ventilation or extracorporeal membrane oxygenation: an exploratory, randomised, placebo-controlled trial". Lancet Respir Med. 10 (4): 327–336. doi:10.1016/S2213-2600(22)00006-6. PMC 8813065. PMID 35123660.{{cite journal}}: CS1 maint: overridden setting (link)
  47. ↑ "FDA Approves Baricitinib for Certain Adult Patients Hospitalized With COVID-19" (Press release).
  48. ↑ "New RECOVERY trial result: baricitinib reduces deaths in patients hospitalised with COVID-19 — RECOVERY Trial". www.recoverytrial.net. Archived from the original on 4 March 2022. Retrieved 5 March 2022.
  49. ↑ "Another life-saving Covid drug identified". BBC News. 3 March 2022. Archived from the original on 5 March 2022. Retrieved 5 March 2022.
  50. ↑ Horby PW, Emberson JR, Mafham M, Campbell M, Peto L, Pessoa-Amorim G, et al. (RECOVERY Collaborative Group) (July 2022). "Baricitinib in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial and updated meta-analysis". Lancet (preprint). 400 (10349): 359–368. doi:10.1101/2022.03.02.22271623. PMC 9333998. PMID 35908569. S2CID 247216504.{{cite journal}}: CS1 maint: overridden setting (link)

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