(Heavy chain) QITLKESGPT LVKPTQTLTL TCSFSGFSLS TSGVGVGWIR QPPGKALEWL ALIDWDDNKY HTTSLKTRLT ISKDTSKNQV VLTMTNMDPV DTATYYCARI PGFLRYRNRY YYYGMDVWGQ GTTVTVSSAS TKGPSVFPLA PSSKSTSGGT AALGCLVKDY FPEPVTVSWN SGALTSGVHT FPAVLQSSGL YSLSSVVTVP SSSLGTQTYI CNVNHKPSNT KVDKRVEPKS CDKTHTCPPC PAPELLGGPS VFLFPPKPKD TLMISRTPEV TCVVVDVSHE DPEVKFNWYV DGVEVHNAKT KPREEQYNST YRVVSVLTVL HQDWLNGKEY KCKVSNKALP APIEKTISKA KGQPREPQVY TLPPSRDELT KNQVSLTCLV KGFYPSDIAV EWESNGQPEN NYKTTPPVLD SDGSFFLYSK LTVDKSRWQQ GNVFSCSVMH EALHNHYTQK SLSLSPGK (Light chain) ELVLTQPPSV SAAPGQKVTI SCSGSSSNIG NNYVSWYQQL PGTAPKLLIY DNNKRPSGIP DRFSGSKSGT SATLGITGLQ TGDEADYYCG TWDSSLSAGV FGGGTELTVL GQPKAAPSVT LFPPSSEELQ ANKATLVCLI SDFYPGAVTV AWKADGSPVK AGVETTKPSK QSNNKYAASS YLSLTPEQWK SHRSYSCQVT HEGSTVEKTV APTECS (Disulfide bridge: H22-H97, H155-H211, H231-L215, H237-H’237, H240-H’240, H272-H332, H378-H436, H’22-H’97, H’155-H’211, H’231-L’215, H’272-H’332, H’378-H’436, L22-L89, L138-L197, L’22-L’89, L’138-L’197)

>Regdanvimab light chain:
ELVLTQPPSVSAAPGQKVTISCSGSSSNIGNNYVSWYQQLPGTAPKLLIYDNNKRPSGIP
DRFSGSKSGTSATLGITGLQTGDEADYYCGTWDSSLSAGVFGGGTELTVLGQPKAAPSVT
LFPPSSEELQANKATLVCLISDFYPGAVTVAWKADGSPVKAGVETTKPSKQSNNKYAASS
YLSLTPEQWKSHRSYSCQVTHEGSTVEKTVAPTECS

>Regdanvimab heavy chain:
QITLKESGPTLVKPTQTLTLTCSFSGFSLSTSGVGVGWIRQPPGKALEWLALIDWDDNKY
HTTSLKTRLTISKDTSKNQVVLTMTNMDPVDTATYYCARIPGFLRYRNRYYYYGMDVWGQ
GTTVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHT
FPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPKSCDKTHTCPPC
PAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKT
KPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVY
TLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSK
LTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK

Regdanvimab

レグダンビマブ;

EMA APPROVED, 2021/11/12, Regkirona

Treatment of adults with coronavirus disease 2019 (COVID-19)

MONOCLONAL ANTIBODY, ANTI VIRAL, PEPTIDE

CAS: 2444308-95-4, CT-P59

Regdanvimab, sold under the brand name Regkirona, is a human monoclonal antibody used for the treatment of COVID-19.^[1] The antibody is directed against the spike protein of SARS-CoV-2. It is developed by Celltrion.^[2][3] The medicine is given by infusion (drip) into a vein.^[1][4]

The most common side effects include infusion-related reactions, including allergic reactions and anaphylaxis.^[1]

Regdanvimab was approved for medical use in the European Union in November 2021.^[1]

Regdanvimab is a monoclonal antibody targeted against the SARS-CoV-2 spike protein used to treat patients with COVID-19 who are at risk of progressing to severe COVID-19.

Regdanvimab (CT-P59) is a recombinant human IgG1 monoclonal antibody directed at the receptor binding domain (RBD) of the SARS-CoV-2 spike protein.⁴ It blocks the interaction between viral spike proteins and angiotensin-converting enzyme 2 (ACE2) that allows for viral entry into the cell, thereby inhibiting the virus’ ability to replicate. Trials investigating the use of regdanvimab as a therapeutic candidate for the treatment of COVID-19 began in mid-2020.^1,3 It received its first full approval in South Korea in September 2021,³ followed by the EU in November 2021.⁵

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Synthesis Reference

Kim C, Ryu DK, Lee J, Kim YI, Seo JM, Kim YG, Jeong JH, Kim M, Kim JI, Kim P, Bae JS, Shim EY, Lee MS, Kim MS, Noh H, Park GS, Park JS, Son D, An Y, Lee JN, Kwon KS, Lee JY, Lee H, Yang JS, Kim KC, Kim SS, Woo HM, Kim JW, Park MS, Yu KM, Kim SM, Kim EH, Park SJ, Jeong ST, Yu CH, Song Y, Gu SH, Oh H, Koo BS, Hong JJ, Ryu CM, Park WB, Oh MD, Choi YK, Lee SY: A therapeutic neutralizing antibody targeting receptor binding domain of SARS-CoV-2 spike protein. Nat Commun. 2021 Jan 12;12(1):288. doi: 10.1038/s41467-020-20602-5.

Celltrion’s Monoclonal Antibody Treatment regdanvimab, Approved by the European Commission for the Treatment of COVID-19

https://www.businesswire.com/news/home/20211114005312/en/Celltrion%E2%80%99s-Monoclonal-Antibody-Treatment-regdanvimab-Approved-by-the-European-Commission-for-the-Treatment-of-COVID-19

• The European Commission (EC) granted marketing authorisation for Celltrion’s regdanvimab following positive opinion by the European Medicines Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) last week (11/11/2021)
• Celltrion continues to discuss supply agreements with regulatory agencies and contractors in more than 30 countries in Europe, Asia and LATAM to accelerate global access to regdanvimab
• The use of regdanvimab across the Republic of Korea is rapidly increasing to address the ongoing outbreaks

November 14, 2021 08:04 PM Eastern Standard Time

INCHEON, South Korea–(BUSINESS WIRE)–Celltrion Group announced today that the European Commission (EC) has approved Regkirona (regdanvimab, CT-P59), one of the first monoclonal antibody treatments granted marketing authorisation from the European Medicines Agency (EMA). The EC granted marketing authorisation for adults with COVID-19 who do not require supplemental oxygen and who are at increased risk of progressing to severe COVID-19. The decision from the EC follows a positive opinion by the European Medicines Agency’s (EMA) Committee for Medicinal Products for Human Use (CHMP) on November 11^th, 2021.¹

“Today’s achievement, coupled with CHMP positive opinion for regdanvimab, underscores our ongoing commitment to addressing the world’s greatest health challenges,” said Dr. HoUng Kim, Ph.D., Head of Medical and Marketing Division at Celltrion Healthcare. “Typically, the recommendations from the CHMP are passed on to the EC for rapid legally binding decisions within a month or two, however, given the unprecedented times, we have received the EC approval within a day. As part of our global efforts to accelerate access, we have been communicating with the governments and contractors in 30 countries in Europe, Asia and LATAM. We will continue working with all key stakeholders to ensure COVID-19 patients around the world have access to safe and effective treatments.”

Monoclonal antibodies are proteins designed to attach to a specific target, in this case the spike protein of SARS-CoV-2, which works to block the path the virus uses to enter human cells. The EC approval is based on the global Phase III clinical trial involving more than 1,315 people to evaluate the efficacy and safety of regdanvimab in 13 countries including the U.S., Spain, and Romania. Data showed regdanvimab significantly reduced the risk of COVID-19 related hospitalisation or death by 72% for patients at high-risk of progressing to severe COVID-19.

Emergency use authorisations are currently in place in Indonesia and Brazil, and the monoclonal antibody treatment is fully approved in the Republic of Korea. In the U.S., regdanvimab has not yet been approved by the Food and Drug Administration (FDA), but the company is in discussion with the FDA to submit applications for an Emergency Use Authorisation (EUA).

As of November 12^th, 2021, more than 22,587 people have been treated with regdanvimab in 129 hospitals in the Republic of Korea.

Notes to Editors:

About Celltrion Healthcare

Celltrion Healthcare is committed to delivering innovative and affordable medications to promote patients’ access to advanced therapies. Its products are manufactured at state-of-the-art mammalian cell culture facilities, designed and built to comply with the US FDA cGMP and the EU GMP guidelines. Celltrion Healthcare endeavours to offer high-quality cost-effective solutions through an extensive global network that spans more than 110 different countries. For more information please visit: https://www.celltrionhealthcare.com/en-us.

About regdanvimab (CT-P59)

CT-P59 was identified as a potential treatment for COVID-19 through screening of antibody candidates and selecting those that showed the highest potency in neutralising the SARS-CoV-2 virus. In vitro and in vivo pre- clinical studies showed that CT-P59 strongly binds to SARS-CoV-2 RBD and significantly neutralise the wild type and mutant variants of concern. In in vivo models, CT-P59 effectively reduced the viral load of SARS-CoV-2 and inflammation in lung. Results from the global Phase I and Phase II/III clinical trials of CT-P59 demonstrated a promising safety, tolerability, antiviral effect and efficacy profile in patients with mild-to-moderate symptoms of COVID-19.² Celltrion also has recently commenced the development of a neutralising antibody cocktail with CT-P59 against new emerging variants of SARS-CoV-2.

Medical uses

In the European Union, regdanvimab is indicated for the treatment of adults with COVID-19 who do not require supplemental oxygen and who are at increased risk of progressing to severe COVID-19.^[1]

Society and culture

Names

Regdanvimab is the proposed international nonproprietary name (pINN).^[5]

Legal status

In March 2021, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) started a rolling review of data on regdanvimab.^[6][7] In October 2021, the EMA started evaluating an application for marketing authorization for the monoclonal antibody regdanvimab (Regkirona) to treat adults with COVID-19 who do not require supplemental oxygen therapy and who are at increased risk of progressing to severe COVID 19.^[8] The applicant is Celltrion Healthcare Hungary Kft.^[8] The European Medicines Agency (EMA) concluded that regdanvimab can be used for the treatment of confirmed COVID-19 in adults who do not require supplemental oxygen therapy and who are at high risk of progressing to severe COVID-19.^[4]

In November 2021, the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) recommended granting a marketing authorization in the European Union for regdanvimab (Regkirona) for the treatment of COVID-19.^[9][10] The company that applied for authorization of Regkirona is Celltrion Healthcare Hungary Kft.^[10] Regdanvimab was approved for medical use in the European Union in November 2021.^[1]

Monoclonal antibody
Type	Whole antibody
Source	Human
Target	Spike protein of SARS-CoV-2
Clinical data
Trade names	Regkirona
Other names	CT-P59
License data	EU EMA: by INN
Routes of administration	Intravenous infusion
ATC code	None
Legal status
Legal status	EU: Rx-only [1]
Identifiers
CAS Number	2444308-95-4
DrugBank	DB16405
UNII	I0BGE6P6I6
KEGG	D12241

1. Tuccori M, Ferraro S, Convertino I, Cappello E, Valdiserra G, Blandizzi C, Maggi F, Focosi D: Anti-SARS-CoV-2 neutralizing monoclonal antibodies: clinical pipeline. MAbs. 2020 Jan-Dec;12(1):1854149. doi: 10.1080/19420862.2020.1854149. [Article]
2. Kim C, Ryu DK, Lee J, Kim YI, Seo JM, Kim YG, Jeong JH, Kim M, Kim JI, Kim P, Bae JS, Shim EY, Lee MS, Kim MS, Noh H, Park GS, Park JS, Son D, An Y, Lee JN, Kwon KS, Lee JY, Lee H, Yang JS, Kim KC, Kim SS, Woo HM, Kim JW, Park MS, Yu KM, Kim SM, Kim EH, Park SJ, Jeong ST, Yu CH, Song Y, Gu SH, Oh H, Koo BS, Hong JJ, Ryu CM, Park WB, Oh MD, Choi YK, Lee SY: A therapeutic neutralizing antibody targeting receptor binding domain of SARS-CoV-2 spike protein. Nat Commun. 2021 Jan 12;12(1):288. doi: 10.1038/s41467-020-20602-5. [Article]
3. Syed YY: Regdanvimab: First Approval. Drugs. 2021 Nov 1. pii: 10.1007/s40265-021-01626-7. doi: 10.1007/s40265-021-01626-7. [Article]
4. EMA Summary of Product Characteristics: Regkirona (regdanvimab) concentrate for solution for intravenous infusion [Link]
5. EMA COVID-19 News: EMA recommends authorisation of two monoclonal antibody medicines [Link]
6. EMA CHMP Assessment Report: Celltrion use of regdanvimab for the treatment of COVID-19 [Link]
7. Protein Data Bank: Crystal Structure of COVID-19 virus spike receptor-binding domain complexed with a neutralizing antibody CT-P59 [Link]

References

1. ^ Jump up to:^{a b c d e f g} “Regkirona EPAR”. European Medicines Agency. Retrieved 12 November 2021. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
2. ^ “Celltrion Develops Tailored Neutralising Antibody Cocktail Treatment with CT-P59 to Tackle COVID-19 Variant Spread Using Its Antibody Development Platform” (Press release). Celltrion. 11 February 2021. Retrieved 4 March 2021 – via Business Wire.
3. ^ “Celltrion Group announces positive top-line efficacy and safety data from global Phase II/III clinical trial of COVID-19 treatment candidate CT-P59” (Press release). Celltrion. 13 January 2021. Retrieved 4 March 2021 – via Business Wire.
4. ^ Jump up to:^a b “EMA issues advice on use of regdanvimab for treating COVID-19”. European Medicines Agency. 26 March 2021. Retrieved 15 October 2021.
5. ^ World Health Organization (2020). “International Nonproprietary Names for Pharmaceutical Substances (INN). Proposed INN: List 124 – COVID-19 (special edition)” (PDF). WHO Drug Information. 34 (3): 660–1.
6. ^ “EMA starts rolling review of Celltrion antibody regdanvimab for COVID-19” (Press release). European Medicines Agency (EMA). 24 February 2021. Retrieved 4 March 2021.
7. ^ “EMA review of regdanvimab for COVID-19 to support national decisions on early use” (Press release). European Medicines Agency (EMA). 2 March 2021. Retrieved 4 March 2021.
8. ^ Jump up to:^a b “EMA receives application for marketing authorisation Regkirona (regdanvimab) treating patients with COVID-19”. European Medicines Agency. 4 October 2021. Retrieved 15 October 2021.
9. ^ “Regkirona: Pending EC decision”. European Medicines Agency. 11 November 2021. Retrieved 11 November 2021.
10. ^ Jump up to:^a b “COVID-19: EMA recommends authorisation of two monoclonal antibody medicines”. European Medicines Agency (EMA) (Press release). 11 November 2021. Retrieved 11 November 2021.

Further reading

• Kim C, Ryu DK, Lee J, Kim YI, Seo JM, Kim YG, et al. (January 2021). “A therapeutic neutralizing antibody targeting receptor binding domain of SARS-CoV-2 spike protein”. Nature Communications. 12 (1): 288. doi:10.1038/s41467-020-20602-5. PMC 7803729. PMID 33436577.

External links

• “Regdanvimab”. Drug Information Portal. U.S. National Library of Medicine.

///////////Regdanvimab, Regkirona, MONOCLONAL ANTIBODY, ANTI VIRAL, EU 2021, APPROVALS 2021, EMA 2021, COVID 19, CORONAVIRUS, PEPTIDE, レグダンビマブ , CT-P59, CT P59