Drugs / mRNA-1273
last change 2 days ago re-read 9 days ago

mRNA-1273

Messenger RNA (mRNA)

Developed for
COVID-19 · Orthocoronavirinae infectious disease · cancer · immunodeficiency disease
Investigated by
ModernaTX, Inc. · National Institute of Allergy and Infectious Diseases (NIAID) · Biomedical Advanced Research and Development Authority · Assistance Publique - Hôpitaux de Paris · Leiden University Medical Center · Merck Sharp & Dohme LLC
+56 more · University Medical Center Groningen · Academic Medical Center - University of Amsterdam · Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections · Bio Analytical Research Corporation · BioVac · Biocair · COVID-19 Prevention Network · COVIREIVAC · Cardiothoracic Surgical Trials Network · Chang Gung Memorial Hospital · Clinical Laboratory Services · Dis-Chem Pharmacy · Erasmus Medical Center · Fred Hutchinson Cancer Center · French National Institute of Health and Medical Research · GlaxoSmithKline · Hutchinson Center Research Institute of South Africa (HCRISA) · Institute of Infectious Disease and Molecular Medicine · International Network for Strategic Initiatives in Global HIV Trials (INSIGHT) · Janssen Vaccines & Prevention B.V. · Kirby Institute · KwaZulu-Natal Research Innovation and Sequencing Platform - KRISP · Maria Joyera Rodríguez · McMaster University · Medical Research Council · Medical Research Council, South Africa · Medigen Vaccine Biologics Corp. · Ministerio de Salud de Ciudad Autónoma de Buenos Aires · National Cancer Institute (NCI) · National Department of Health of South Africa · National Heart, Lung, and Blood Institute (NHLBI) · National Institute of Communicable Diseases - NICD · National Taiwan University Hospital · Novartis Pharmaceuticals · PPD Development, LP · Prevention and Early Treatment of Acute Lung Injury · Providence Healthcare · Regeneron Pharmaceuticals · Right to Care · Scarborough General Hospital · Sheba Medical Center · Sunnybrook Health Sciences Centre · Takeda · Tor Biering-Sørensen · US Department of Veterans Affairs · Unity Health Toronto · University Health Network, Toronto · University of Alberta · University of Antwerp · University of California, Los Angeles · University of Copenhagen · University of Manitoba · University of Minnesota · University of Saskatchewan · Washington D.C. Veterans Affairs Medical Center · Wits Health Consortium (Pty) Ltd

Regulatory milestones approvals, filings & regulatory actions · 12 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Filed US (FDA) Spikevax COVID-19 2025-05-23

“today announced that it has submitted an application to the U.S. Food and Drug Administration (FDA) for review of its Spikevax 2025-2026 formula” q4web.com ↗

“it has submitted an application to the U.S. Food and Drug Administration (FDA) for review of its Spikevax 2025-2026 formula” q4web.com ↗

Filed US (FDA) Spikevax COVID-19 2024-06-07

“today announced that it has submitted an application to the U.S. Food and Drug Administration (FDA) for review of its Spikevax 2024-2025 formula” q4web.com ↗

“submitted an application to the U.S. Food and Drug Administration (FDA) for review of its Spikevax 2024-2025 formula” q4web.com ↗

Filed EU (EMA) Spikevax bivalent Original/Omicron BA.4-5 COVID-19 2022-09-28

“EMA has accepted a variation for the evaluation of a 50 µg booster dose of the Omicron-containing bivalent COVID booster candidate, mRNA-1273.222” q4web.com ↗

Filed Other SPIKEVAX COVID-19 2021-11-17

“it has submitted for authorization with Health Canada for the evaluation of a 50 µg two-dose series of SPIKEVAX™” q4web.com ↗

Filed EU (EMA) — COVID-19 2021-11-09

“Moderna Files to Expand the Conditional Marketing Authorization for its COVID-19 Vaccine in the European Union to Include Children Ages 6-11 Years” q4web.com ↗

Filed US (FDA) — COVID-19 2021-08-25

“Moderna completed the rolling submission process for a Biologics License Application (BLA) for its COVID-19 vaccine (mRNA-1273) in the U.S.” q4web.com ↗

“Moderna Completes Submission of Biologics License Application to the U.S. Food and Drug Administration for its COVID-19 Vaccine” q4web.com ↗

Filed EU (EMA) COVID-19 vaccine COVID-19 2021-06-07

“today announced that it has submitted for a conditional marketing approval (CMA) for its COVID-19 vaccine in adolescents with the European Medicines Agency (EMA).” q4web.com ↗

“Today, Moderna also announced that it has submitted for conditional marketing approval for use of the vaccine by adolescents with the European Medicines Agency.” q4web.com ↗

“We have already filed for authorization with the U.S. FDA, Health Canada and the European Medicines Agency” q4web.com ↗

“We have already filed for authorization with Health Canada and the European Medicines Agency” q4web.com ↗

Filed Other COVID-19 vaccine COVID-19 2021-06-07

“today announced that it has submitted for authorization of its COVID-19 vaccine in adolescents with Health Canada.” q4web.com ↗

“We have already filed for authorization with the U.S. FDA, Health Canada and the European Medicines Agency” q4web.com ↗

“has submitted an authorization application to Swissmedic for use of its COVID-19 vaccine in adolescents.” q4web.com ↗

“We have already filed for authorization with Health Canada and the European Medicines Agency” q4web.com ↗

“We have filed for authorization with Health Canada” q4web.com ↗

Filed US (FDA) — COVID-19 2021-06-01

“has requested an emergency use authorization (EUA) for its COVID-19 vaccine in adolescents with the U.S. Food and Drug Administration (FDA).” q4web.com ↗

“On June 1, 2021, the Company initiated the rolling submission process for a Biologics License Application (BLA) for the vaccine in the U.S.” q4web.com ↗

“We have already filed for authorization with the U.S. FDA, Health Canada and the European Medicines Agency” q4web.com ↗

Filed Japan (PMDA) — COVID-19 2021-03-05

“New Drug Application Submitted to Import and Distribute Moderna’s COVID-19 Vaccine Candidate in Japan” q4web.com ↗

Filed EU (EMA) COVID-19 Vaccine Moderna COVID-19 2020-11-30

“submitted a request for an Emergency Use Authorization (EUA) from the U.S. Food and Drug Administration (FDA) and conditional approval from the European Medicines Agency” q4web.com ↗

“it filed for Emergency Use Authorization with the U.S. FDA and a Conditional Marketing Authorization (CMA) application with the European Medicines Agency.” q4web.com ↗

“filed for Emergency Use Authorization with the U.S.FDA and a Conditional Marketing Authorization (CMA) application with the European Medicines Agency.” q4web.com ↗

“filed for Emergency Use Authorization with the U.S.FDA and a Conditional Marketing Authorization (CMA) application with the European Medicines Agency.” q4web.com ↗

“filed for Emergency Use Authorization with the U.S.FDA and a Conditional Marketing Authorization (CMA) application with the European Medicines Agency.” q4web.com ↗

“filed for Emergency Use Authorization with the U.S. FDA and a Conditional Marketing Authorization (CMA) with the European Medicines Agency.” q4web.com ↗

Filed Other — COVID-19 2020-10-13

“today announced the initiation of a rolling submission to Health Canada for mRNA-1273, the Company’s vaccine candidate against COVID-19.” q4web.com ↗

Trials 42

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 14 trials
Phase 1 NCT05397223 May 2022 → Feb 2026 COVID-19, cytomegalovirus infection, influenza, respiratory syncytial virus infectious disease ModernaTX, Inc. Completed No outcome recorded
Phase 1 NCT04785144 Mar 2021 → Jul 2022 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 1 NCT04813796 Mar 2021 → Jul 2023 COVID-19 ModernaTX, Inc. Completed No outcome recorded
Phase 1 NCT04283461 Mar 2020 → Apr 2022 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 1/25 trials
Phase 1/2 NCT05375838 May → Dec 2022 COVID-19, influenza ModernaTX, Inc. Completed No outcome recorded
Phase 1/2 NCT05280158 Mar 2022 → Feb 2023 Orthocoronavirinae infectious disease University of California, Los Angeles Terminated No outcome recorded
Phase 1/2 NCT05132855 Nov 2021 → Apr 2023 COVID-19 Chang Gung Memorial Hospital Unknown No outcome recorded
Phase 1/2 NCT04889209 May 2021 → Jun 2023 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 1/2 NCT04677660 Jan 2021 → Feb 2022 COVID-19 Takeda Completed No outcome recorded
Phase 29 trials · 1 missed
Phase 2 NCT05315362 May → Sep 2022 COVID-19 Leiden University Medical Center Unknown Missed primary
Phase 2 NCT05289037 Mar 2022 → Nov 2023 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 2 NCT04930770 Sep → Dec 2021 COVID-19 Maria Joyera Rodríguez Withdrawn No outcome recorded
Phase 2 NCT04969263 Aug 2021 → Nov 2022 disease related to solid organ transplantation National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 2 NCT05027672 Jul → Aug 2021 — Ministerio de Salud de Ciudad Autónoma de Buenos Aires Unknown No outcome recorded
Phase 2 NCT04852978 Apr 2021 → Nov 2022 — Regeneron Pharmaceuticals Completed No outcome recorded
Phase 2 NCT04847050 Apr 2021 → May 2023 leukemia, plasma cell myeloma National Cancer Institute (NCI) Completed No outcome recorded
Phase 2 NCT04748471 Feb → Jul 2021 — Assistance Publique - Hôpitaux de Paris Unknown No outcome recorded
Phase 2 NCT04405076 May 2020 → Oct 2021 Orthocoronavirinae infectious disease ModernaTX, Inc. Completed No outcome recorded
Phase 2/35 trials · 4 met primary
Phase 2/3 NCT05168813 Dec 2021 → Apr 2024 COVID-19, HIV infectious disease COVID-19 Prevention Network Completed No outcome recorded
Phase 2/3 NCT05022329 Sep 2021 → May 2022 COVID-19, chronic kidney disease Sunnybrook Health Sciences Centre Terminated Met primary
Phase 2/3 NCT04927065 May 2021 → Nov 2023 COVID-19 ModernaTX, Inc. Completed Met primary
Phase 2/3 NCT04796896 Mar 2021 → Mar 2024 COVID-19 ModernaTX, Inc. Completed Met primary
Phase 2/3 NCT04649151 Dec 2020 → Jun 2024 COVID-19 ModernaTX, Inc. Completed Met primary
Phase 37 trials · 2 met primary
Phase 3 NCT05119855 Mar 2022 → Dec 2023 COVID-19, human papilloma virus infection Merck Sharp & Dohme LLC Completed No outcome recorded
Phase 3 NCT05158140 Jan 2022 → Feb 2023 pneumococcal infection Merck Sharp & Dohme LLC Completed No outcome recorded
Phase 3 NCT05230953 Jan 2022 → Jul 2024 COVID-19 Sheba Medical Center Unknown No outcome recorded
Phase 3 NCT05148845 Nov 2021 → Jan 2022 COVID-19 Wits Health Consortium (Pty) Ltd Completed No outcome recorded
Phase 3 NCT05047770 Oct 2021 → Aug 2022 herpes zoster GlaxoSmithKline Completed Met primary
Phase 3 NCT04860297 Apr 2021 → May 2023 COVID-19 ModernaTX, Inc. Completed No outcome recorded
Phase 3 NCT04470427 Jul 2020 → Dec 2022 COVID-19 ModernaTX, Inc. Completed Met primary
Phase 49 trials · 1 missed
Phase 4 NCT07863635 Oct 2026 → Jan 2027 expected Orthocoronavirinae infectious disease ModernaTX, Inc. Not yet recruiting No outcome recorded
Phase 4 NCT07279766 Dec 2025 → Aug 2026 COVID-19 Tor Biering-Sørensen Completed No outcome recorded
Phase 4 NCT07266558 Nov 2025 → Jun 2027 expected COVID-19 ModernaTX, Inc. Active not recruiting No outcome recorded
Phase 4 NCT05079633 Sep → Oct 2021 — National Taiwan University Hospital Completed Missed primary
Phase 4 NCT04969250 Aug 2021 → Dec 2022 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 4 NCT04952402 Jul 2021 → Feb 2022 COVID-19 National Institute of Allergy and Infectious Diseases (NIAID) Completed No outcome recorded
Phase 4 NCT06189040 May → Nov 2021 COVID-19 University of Antwerp Completed No outcome recorded
Phase 4 NCT04792567 Apr → Sep 2021 secondary progressive multiple sclerosis Novartis Pharmaceuticals Completed No outcome recorded
Phase 4 NCT04818736 Apr → Sep 2021 — McMaster University Withdrawn No outcome recorded
Phase not applicable3 trials · 2 met primary
— NCT04927936 Jun 2021 → Sep 2022 COVID-19 Erasmus Medical Center Unknown Met primary
— NCT04900467 May → Jul 2021 — Assistance Publique - Hôpitaux de Paris Unknown No outcome recorded
— NCT04715438 Jan → Jun 2021 cancer University Medical Center Groningen Unknown Met primary
Comparator or background therapy17 trials
Phase 0 NCT05081271 Comparator Oct 2021 → May 2022 multiple sclerosis Griffin Hospital Terminated No outcome recorded
Phase 2 NCT07808697 Comparator Sep 2026 → Aug 2029 expected Orthocoronavirinae infectious disease ModernaTX, Inc. Not yet recruiting No outcome recorded
Phase 2 NCT05383560 Comparator Sep 2022 → Jan 2024 COVID-19 Sheba Medical Center Completed No outcome recorded
Phase 2 NCT05345873 Comparator Jul → Oct 2022 COVID-19 Sinocelltech Ltd. Unknown No outcome recorded
Phase 2 NCT05197153 Comparator Jan → Jun 2022 — Medigen Vaccine Biologics Corp. Completed No outcome recorded

News releases announcing trial results or a regulatory action · 115

DateIssuerRelease
2026-08-27 ModernaTX, Inc. Regulatory Moderna Receives U.S. FDA Approval for Updated 2026-2027 COVID-19 Vaccines q4web.com ↗
Moderna, Inc. (NASDAQ:MRNA) today announced that the U.S. Food and Drug Administration (FDA) has approved the supplemental Biologics License Applications (sBLA) for the 2026-2027 formulas for Spikevax® (COVID-19 Vaccine, mRNA) and mNEXSPIKE® (COVID-19 Vaccine, mRNA), containing the JN.1-lineage XFG subvariant of SARS-CoV-2 to help prevent COVID-19.
2025-09-16 ModernaTX, Inc. Results Moderna Announces Updated COVID-19 Vaccine Against LP.8.1 Variant Generates Strong Immune Response in Humans q4web.com ↗
Moderna, Inc. (NASDAQ:MRNA) today announced positive preliminary immunogenicity data for the 2025-2026 formula of Spikevax®, which targets the LP.8.1 variant of SARS-CoV-2 to help prevent COVID-19.
2025-08-27 ModernaTX, Inc. Regulatory Moderna Receives U.S. FDA Approval for Updated COVID-19 Vaccines Targeting LP.8.1 Variant of SARS-CoV-2 q4web.com ↗
With the U.S. FDA's decision, Moderna's updated vaccines are expected to be available in the coming days.
2025-08-22 ModernaTX, Inc. Regulatory Moderna Receives Health Canada Approval for Updated COVID-19 Vaccine Targeting SARS-CoV-2 Variant LP.8.1 q4web.com ↗
Moderna announced today that Health Canada has authorized its updated COVID-19 mRNA vaccine, Spikevax®, targeting the SARS-CoV-2 LP.8.1 variant, for individuals aged six months and older.
2025-07-30 ModernaTX, Inc. Regulatory Moderna Receives European Commission Approval for Updated COVID-19 Vaccine Targeting SARS-CoV-2 Variant LP.8.1 q4web.com ↗
2025-07-25 ModernaTX, Inc. Regulatory EMA Committee for Medicinal Products for Human Use Adopts Positive Opinion Recommending Authorization of Moderna's COVID-19 mRNA Vaccine Targeting the SARS-CoV-2 Variant LP.8.1 q4web.com ↗
Following the CHMP's positive opinion, the European Commission will make a marketing authorization decision on Moderna's updated COVID-19 vaccine for the 2025-2026 season.
2025-07-10 ModernaTX, Inc. Regulatory Moderna Receives Full U.S. FDA Approval for COVID-19 Vaccine, Spikevax, in Children Aged 6 Months Through 11 Years at Increased Risk for COVID-19 Disease q4web.com ↗
We appreciate the FDA's diligent scientific review and approval of Spikevax for pediatric populations at increased risk for COVID-19 disease.
2025-05-23 ModernaTX, Inc. Regulatory Moderna Files FDA Application for the LP.8.1 Targeting COVID-19 Vaccine q4web.com ↗
Moderna, Inc. (NASDAQ:MRNA) today announced that it has submitted an application to the U.S. Food and Drug Administration (FDA) for review of its Spikevax 2025-2026 formula, targeting the SARS-CoV-2 variant LP.8.1.
2024-09-17 ModernaTX, Inc. Regulatory Moderna Receives Health Canada Approval For Updated COVID-19 Vaccine Targeting KP.2 Variant Of SARS-COV-2 For Ages Six Months And Older q4web.com ↗
Moderna Inc (Nasdaq:MRNA) today announced that Health Canada has authorized its updated COVID-19 vaccine, SPIKEVAX® KP.2 variant, to help prevent COVID-19 in individuals six months of age and older.
2024-09-05 ModernaTX, Inc. Regulatory EMA Committee for Medicinal Products for Human Use Adopts Positive Opinion Recommending Authorization of Moderna's COVID-19 mRNA Vaccine Targeting the SARS-COV-2 Variant JN.1 q4web.com ↗
"The CHMP's positive recommendation for our updated COVID-19 mRNA vaccine targeting the SARS-CoV-2 variant JN.1 is a key milestone, demonstrating our commitment to protecting citizens across the European Union," said Stéphane Bancel, Chief Executive Officer of Moderna.
2024-09-03 ModernaTX, Inc. Regulatory Moderna Receives Medicines And Healthcare Products Regulatory Agency (MHRA) Authorization For Updated COVID-19 Vaccine Targeting SARS-COV-2 Variant JN.1 q4web.com ↗
Moderna, Inc. (Nasdaq:MRNA) today announced that the Medicines and Healthcare products Regulatory Agency (MHRA) has authorized its updated COVID-19 vaccine targeting the JN.1 variant of SARS-CoV-2.
2024-09-02 ModernaTX, Inc. Regulatory Taiwan Food & Drug Administration Approves Moderna’s COVID-19 mRNA Vaccine Targeting the SARS-COV-2 Variant JN.1 q4web.com ↗
the Taiwan Food & Drug Administration (FDA) has approved an updated formulation of the COVID-19 mRNA vaccine Spikevax, targeting the SARS-CoV-2 variant JN.1.

All press releases naming this drug 758 releases

DateIssuerRelease
Show all 758 releases opens the full record — a long page

Evidence & citations 14 cited values

Every value below carries the sentence it was read from. 65 sources stand behind the page.

FieldValueCited text
Known as mRNA-1273 “Participants ( n =273) with CKD not on dialysis or receiving dialysis were randomized 1:1 to third dose 30- µ g BNT162b2 (Pfizer-BioNTech) or 100- µ g mRNA-1273 (Moderna).” PMID 37847518 ↗ Oct 2023
58

“We recruited adult volunteers for homologous or heterologous prime-boost vaccinations with adenoviral (ChAdOx1, AstraZeneca) and/or mRNA (mRNA-1273, Moderna) vaccines.” PMID 35305895 ↗ Mar 2022

“The mRNA vaccine, mRNA-1273/TAK-919, encodes the prefusion-stabilised spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).” PMID 35177302 ↗ Feb 2022

“mRNA-1273 or Spikevax Moderna Switzerland GmbH and the National Institute of Allergy and Infectious Diseases (NIAID) of the United States.” NCT04988048 ↗

“The participants were assigned to receive no booster, an Ad26.COV2.S booster, an mRNA-1273 booster, or a BNT162b2 booster.” PMID 35045226 ↗ Jan 2022

“mRNA-1273 Injection (Drug Product) is an lipid nanoparticles (LNPs) dispersion containing a single mRNA sequence” NCT04847050 ↗

“Study About the Response to the Administration of a Third Dose of mRNA-1273 Vaccine (COVID-19 Vaccine Moderna)” NCT04930770 ↗

“This means Ad26.COV2.S if they originally received BNT162b2 or mRNA-1273 or vice versa” NCT05081271 ↗

“mRNA-1273, COVID-19 Vaccine Moderna, mARN vaccine, administrated by intramuscular” NCT04900467 ↗

“the vaccine produced by Moderna (mRNA-1273)” NCT05027672 ↗

“with mRNA-1273 (Moderna COVID-19) vaccine” NCT04818736 ↗

Show 48 more sources

Known as COVID-19 Vaccine Moderna “Study About the Response to the Administration of a Third Dose of mRNA-1273 Vaccine (COVID-19 Vaccine Moderna)” NCT04930770 ↗
1

“mRNA-1273, COVID-19 Vaccine Moderna, mARN vaccine, administrated by intramuscular” NCT04900467 ↗

Known as Elasomeran ClinicalTrials.gov intervention name — accepted as the source's own label NCT05543356 ↗
1

NCT05228730 ↗

Known as messenger RNA-1273 “SARS-CoV-2 messenger RNA-1273 (Moderna) vaccine” NCT05074368 ↗
Known as Moderna “Participants ( n =273) with CKD not on dialysis or receiving dialysis were randomized 1:1 to third dose 30- µ g BNT162b2 (Pfizer-BioNTech) or 100- µ g mRNA-1273 (Moderna).” PMID 37847518 ↗ Oct 2023
1

“SARS-CoV-2 messenger RNA-1273 (Moderna) vaccine” NCT05074368 ↗

Known as Moderna (mRNA-1273 or Spikevax) “Moderna (mRNA-1273 or Spikevax)” NCT04988048 ↗
Known as Moderna COVID-19 vaccine “Moderna COVID-19 Vaccine, mRNA-1273 (100 μg)” NCT04805125 ↗
3

“mRNA-1273 (Moderna COVID-19 vaccine) 50 ug” NCT05280158 ↗

“mRNA-1273 (Moderna COVID-19 vaccine)” NCT07279766 ↗

“Moderna COVID-19 vaccine (mRNA 1273)” NCT05079633 ↗

Known as Moderna mRNA-1273 “For dose 1 and 2, the currently available mRNA vaccines (Pfizer-BioNTech BNT162b2 and Moderna mRNA-1273) are two dose vaccines which were studied in schedules of either 0 and...” NCT04894435 ↗
Known as Moderna mRNA-1273 COVID-19 vaccine “Study-provided Moderna mRNA-1273 COVID-19 vaccine” NCT04952402 ↗
Known as mRNA-1273 SARS-CoV-2 Vaccine “Participants will be blinded and receive two doses (0.20 mg/mL each) of mRNA-1273 SARS-CoV-2 vaccine via intramuscular injection in the deltoid muscle 28 days apart.” NCT04894435 ↗
1

“mRNA-1273 SARS-CoV-2 Vaccine” NCT05022329 ↗

Known as Spikevax “single fractional dose of 20µg mRNA-1273 LNP vaccine (Spikevax, Moderna) more than 3 months after primary vaccination with Comirnaty (Pfizer) vaccine and/or after having...” NCT05315362 ↗
2

“For this arm, the current variant formulation of Spikevax (mRNA-1273) vaccine will be used.” NCT07279766 ↗

“following mRNA-1273 (Spikevax™) vaccination” PMID 36376733 ↗ Nov 2022

Known as TAK-919 ClinicalTrials.gov intervention name — accepted as the source's own label NCT04677660 ↗
Modality Messenger RNA (mRNA) “The mRNA-1273 vaccine is a lipid nanoparticle-encapsulated mRNA-based vaccine” PMID 33378609 ↗ Dec 2020
Route Intramuscular “Subjects will receive an intramuscular (IM) injection (0.5 milliliters \[mL\]) of mRNA-1273 on Days 1 and 29 in the deltoid muscle” NCT04283461 ↗