CClinicalTrials.gg
CompletedNCT05305651LUNARUpdated Oct 6, 2026Results posted

Study to Monitor the Occurrence of Viral Variants in Patients With Compromised Immune Systems Being Treated for COVID-19

A Phase 4 interventional study of Sotrovimab in COVID-19, sponsored by GlaxoSmithKline. Completed at 8 sites in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-06.

Sponsored by GlaxoSmithKline · Phase 4, Interventional, and Treatment

Updated Oct 6, 2026Study completion moved1 site added+1 moreGo to Updates ↓
Phase
Phase 4
Study type
Interventional
Enrollment
217
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

Sotrovimab binds to a conserved epitope on the severe acute respiratory syndrome coronavirus (SARS-CoV) and SARS-CoV-2 spike protein outside the receptor-binding motif and has been shown to reduce the risk of hospitalization and/or death when administered as early treatment in non-hospitalized patients that are at risk for progression to severe disease. Immunocompromised (IC) patients are prioritized to receive early treatment for COVID-19 as they are at high risk of disease progression, and because of their potential for prolonged viral shedding and the resulting increased risk of emergent viral mutations and potential onward community transmission.

This genomic surveillance study will aim to describe changes in the SARS-CoV-2 spike protein observed in IC participants receiving sotrovimab as standard of clinical care in sentinel sites at a national level to assess potential emergence of viral variants.

02

Conditions studied

  • COVID-19

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Keywords

  • SARS CoV-2
  • LUNAR
  • Coronavirus disease 2019 (COVID-19)
  • Pandemic
  • Sotrovimab
  • Monoclonal antibody
  • Immunocompromised (IC)
03

In context

COVID-19

7,640 studies on the registry are indexed under COVID-19; 488 are open to participants now.

This study's enrollment of 217 is above the median of 100 across 4,099 interventional studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

GlaxoSmithKline is the lead sponsor of 3,562 studies on the registry; 117 are open to participants now.

Of its 258 completed or terminated interventional studies of FDA-regulated products, 232 (90%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Participants must be adult and of greater than or equal to (>=) 18 years of age or older at the time of consent
  • Participants must be immunocompromised (IC) population eligible to receive sotrovimab
  • A positive polymerase chain reaction (PCR) or antigen test for SARS-CoV-2 through clinical testing or routine screening undertaken as part of clinical management
  • Prescribed treatment with sotrovimab as standard of clinical care
  • Able to provide informed consent and willing to adhere to study-related procedures

Exclusion criteria

Exclusion Criteria:

  • Participants who require hospitalization (related or not to COVID-19) at baseline
  • Participants who initiated sotrovimab therapy in inpatient settings
  • Participants unable to perform nasal/oropharyngeal sample collection
  • Blinded participants from other COVID-19 related trials
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
217 participants (actual)

Study arms

  • Experimental
    Participants receiving Sotrovimab

    Immunocompromised non-hospitalized participants will receive sotrovimab as standard of clinical care for COVID-19 in sentinel sites

    Drug: Sotrovimab

Interventions

  • DrugSotrovimab

    Sotrovimab dose and administration per standard of clinical care

06

What researchers measure

Primary outcomes

  1. Number of Participants With Treatment Emergent Amino Acid Substitutions Greater Than (>) 5 Percent (%) and >50% Allelic Frequency in the Sotrovimab Epitope at Day 7

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by Next generation sequencing (NGS) analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the amino acid (AA) sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 7.

    Time frame: At Day 7

  2. Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 14

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 14.

    Time frame: At Day 14

  3. Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 28

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 28.

    Time frame: At Day 28

  4. Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 7

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 7.

    Time frame: At Day 7

  5. Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 14

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 14.

    Time frame: At Day 14

  6. Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 28

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 28.

    Time frame: At Day 28

Secondary outcomes

  1. Number of Participants With Variants of Concern (VOC) or Variants Under Investigation (VUI)

    SARS-CoV-2 VOC is defined by World health Organization(WHO) that meets definition of VUI and through a comparative assessment, has been demonstrated to be associated with 1 or more of following changes at degree of global public health(GPH) significance: increase in transmissibility or detrimental change in COVID-19 epidemiology, OR increase in virulence or change in clinical disease presentation, OR decrease in effectiveness of public health and social measures or available diagnostics, vaccines, therapeutics. SARS-CoV-2 VUI is defined by WHO as a variant:with genetic changes that are predicted or known to affect virus characteristics such as transmissibility, disease severity, immune, diagnostic or therapeutic escape and identified to cause significant community transmission or multiple COVID-19 clusters, in multiple countries with increasing relative prevalence alongside increasing number of cases over time, or other apparent epidemiological impacts to suggest emerging risk to GPH.

    Time frame: Up to Day 28

  2. Number of Participants With Undetectable Virus by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)

    The number of participants that had undetectable viral load in nasal/oropharyngeal swabs was determined by quantitative reverse transcription-polymerase chain reaction (qRT/PCR) at Day 7, Day 14, and Day 28. Participants with major protocol deviation (out of visit window/samples received late/return more samples than expected) at specific visits were excluded from analysis.

    Time frame: At Day 7, Day 14, and Day 28

  3. Number of Participants With All Cause Hospital Stay

    Number of participants hospitalized due to any cause have been reported.

    Time frame: Up to Day 28

  4. Number of Participants With COVID-19 Related Hospital Stay

    Number of participants hospitalized due to COVID-19 have been reported.

    Time frame: Up to Day 28

  5. Number of Participants Requiring New or Increased Oxygen Support (Supplemental Oxygen [Not High Flow]), Non-invasive Ventilation or High-flow, Invasive Mechanical Ventilation or Extracorporeal Membrane Oxygenation (ECMO)

    Number of participants required new or increased oxygen support (supplemental oxygen \[not high flow\]), non-invasive ventilation or high-flow, invasive mechanical ventilation or ECMO have been reported.

    Time frame: Up to Day 28

  6. Number of Participants With All Cause Intensive Care Unit (ICU) Hospital Stay

    Number of participants hospitalized in ICU due to any cause have been reported.

    Time frame: Up to Day 28

  7. Number of Participants With COVID-19 Related ICU Hospital Stay

    Number of participants hospitalized in ICU due to COVID-19 have been reported.

    Time frame: Up to Day 28

  8. Number of Participants Who Died Due to Any Cause Through Day 28

    Data for number of participants who died due to any cause through Day 28 have been reported.

    Time frame: Up to Day 28

  9. Number of Participants Who Died Due to COVID-19 Through Day 28

    Data for number of participants who died due to COVID-19 have been reported.

    Time frame: Up to Day 28

  10. Number of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >5%

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples for samples above the threshold for the sequencing assay. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. For samples with AA changes above the \>5% threshold for allelic frequency determination, AA changes in SARS-CoV-2 spike protein compared to Baseline was reported. One participant may have more than one substitution under the same codon. Treatment Emergent Substitutions included participants where a Baseline and post-Baseline records exist. All type of AA mutations have been categorized.

    Time frame: At Day 7, Day 14 and Day 28

  11. Number of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >50%

    SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples for samples with viral load above the threshold of the sequencing assay. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. For samples with AA changes above the threshold for consensus sequence generation that were not present in the Baseline sequence, AA changes in the SARS-CoV-2 spike protein consensus sequence (\>50%) from Baseline was reported. One participant may have more than one substitution under the same codon. Treatment Emergent Substitutions included participants where a Baseline and post-Baseline records exist. All type of AA mutations have been categorized.

    Time frame: At Day 7, Day 14 and Day 28

07

Results

Posted Oct 15, 2024

Participant flow

This was a prospective cohort study amongst immunocompromised non-hospitalized participants treated with sotrovimab as part of standard clinical care to monitor the emergence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) spike viral variants.

Participant flow — Overall Study
MilestoneSotrovimab 500 mg IV
Started217
Completed208
Not completed9
Withdrew: Death1
Withdrew: Withdrawal by subject4
Withdrew: Lost to follow-up4

Outcome measures

PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions Greater Than (>) 5 Percent (%) and >50% Allelic Frequency in the Sotrovimab Epitope at Day 7

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by Next generation sequencing (NGS) analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the amino acid (AA) sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 7.

Time frame:
At Day 7
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions Greater Than (>) 5 Percent (%) and >50% Allelic Frequency in the Sotrovimab Epitope at Day 7
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency38
AA substitutions >50% allelic frequency12
PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 14

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 14.

Time frame:
At Day 14
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 14
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency18
AA substitutions >50% allelic frequency11
PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 28

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The epitope is part of the spike protein, and it was analyzed separately from the rest of spike. The number of participants with TE substitutions in the sotrovimab epitope reflects participants that had a TE change in the spike protein at the sotrovimab epitope position only. AA substitutions compared to the reference strain are presented at Day 28.

Time frame:
At Day 28
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Sotrovimab Epitope at Day 28
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency11
AA substitutions >50% allelic frequency11
PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 7

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 7.

Time frame:
At Day 7
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 7
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency88
AA substitutions >50% allelic frequency19
PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 14

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 14.

Time frame:
At Day 14
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 14
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency37
AA substitutions >50% allelic frequency17
PrimaryNumber of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 28

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. Treatment emergent (TE) substitutions are defined as AA differences in a post-Baseline sample that were not present at Baseline at the defined threshold for minority and consensus analysis. The number of participants with TE substitutions in the spike protein reflects participants that had a TE change in the spike protein at any position including the sotrovimab epitope. AA substitutions compared to the reference strain are presented at Day 28.

Time frame:
At Day 28
Reported as:
Count of participants · Participants
Number of Participants With Treatment Emergent Amino Acid Substitutions >5% and >50% Allelic Frequency in the Spike Protein at Day 28
ParticipantsSotrovimab 500 mg IV
AA substitutions >5% allelic frequency20
AA substitutions >50% allelic frequency13
SecondaryNumber of Participants With Variants of Concern (VOC) or Variants Under Investigation (VUI)

SARS-CoV-2 VOC is defined by World health Organization(WHO) that meets definition of VUI and through a comparative assessment, has been demonstrated to be associated with 1 or more of following changes at degree of global public health(GPH) significance: increase in transmissibility or detrimental change in COVID-19 epidemiology, OR increase in virulence or change in clinical disease presentation, OR decrease in effectiveness of public health and social measures or available diagnostics, vaccines, therapeutics. SARS-CoV-2 VUI is defined by WHO as a variant:with genetic changes that are predicted or known to affect virus characteristics such as transmissibility, disease severity, immune, diagnostic or therapeutic escape and identified to cause significant community transmission or multiple COVID-19 clusters, in multiple countries with increasing relative prevalence alongside increasing number of cases over time, or other apparent epidemiological impacts to suggest emerging risk to GPH.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants With Variants of Concern (VOC) or Variants Under Investigation (VUI)
ParticipantsSotrovimab 500 mg IV
Number of Participants With Variants of Concern (VOC) or Variants Under Investigation (VUI)208
SecondaryNumber of Participants With Undetectable Virus by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)

The number of participants that had undetectable viral load in nasal/oropharyngeal swabs was determined by quantitative reverse transcription-polymerase chain reaction (qRT/PCR) at Day 7, Day 14, and Day 28. Participants with major protocol deviation (out of visit window/samples received late/return more samples than expected) at specific visits were excluded from analysis.

Time frame:
At Day 7, Day 14, and Day 28
Reported as:
Count of participants · Participants
Number of Participants With Undetectable Virus by Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)
ParticipantsSotrovimab 500 mg IV
Day 750
Day 14129
Day 28162
SecondaryNumber of Participants With All Cause Hospital Stay

Number of participants hospitalized due to any cause have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants With All Cause Hospital Stay
ParticipantsSotrovimab 500 mg IV
Number of Participants With All Cause Hospital Stay7
SecondaryNumber of Participants With COVID-19 Related Hospital Stay

Number of participants hospitalized due to COVID-19 have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants With COVID-19 Related Hospital Stay
ParticipantsSotrovimab 500 mg IV
Number of Participants With COVID-19 Related Hospital Stay0
SecondaryNumber of Participants Requiring New or Increased Oxygen Support (Supplemental Oxygen [Not High Flow]), Non-invasive Ventilation or High-flow, Invasive Mechanical Ventilation or Extracorporeal Membrane Oxygenation (ECMO)

Number of participants required new or increased oxygen support (supplemental oxygen \[not high flow\]), non-invasive ventilation or high-flow, invasive mechanical ventilation or ECMO have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants Requiring New or Increased Oxygen Support (Supplemental Oxygen [Not High Flow]), Non-invasive Ventilation or High-flow, Invasive Mechanical Ventilation or Extracorporeal Membrane Oxygenation (ECMO)
ParticipantsSotrovimab 500 mg IV
New or increased oxygen support (supplemental oxygen [not high flow])1
Non-invasive ventilation or high flow1
Invasive mechanical ventilation0
ECMO0
SecondaryNumber of Participants With All Cause Intensive Care Unit (ICU) Hospital Stay

Number of participants hospitalized in ICU due to any cause have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants With All Cause Intensive Care Unit (ICU) Hospital Stay
ParticipantsSotrovimab 500 mg IV
Number of Participants With All Cause Intensive Care Unit (ICU) Hospital Stay0
SecondaryNumber of Participants With COVID-19 Related ICU Hospital Stay

Number of participants hospitalized in ICU due to COVID-19 have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants With COVID-19 Related ICU Hospital Stay
ParticipantsSotrovimab 500 mg IV
Number of Participants With COVID-19 Related ICU Hospital Stay0
SecondaryNumber of Participants Who Died Due to Any Cause Through Day 28

Data for number of participants who died due to any cause through Day 28 have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants Who Died Due to Any Cause Through Day 28
ParticipantsSotrovimab 500 mg IV
Number of Participants Who Died Due to Any Cause Through Day 281
SecondaryNumber of Participants Who Died Due to COVID-19 Through Day 28

Data for number of participants who died due to COVID-19 have been reported.

Time frame:
Up to Day 28
Reported as:
Count of participants · Participants
Number of Participants Who Died Due to COVID-19 Through Day 28
ParticipantsSotrovimab 500 mg IV
Number of Participants Who Died Due to COVID-19 Through Day 280
SecondaryNumber of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >5%

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples for samples above the threshold for the sequencing assay. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. For samples with AA changes above the \>5% threshold for allelic frequency determination, AA changes in SARS-CoV-2 spike protein compared to Baseline was reported. One participant may have more than one substitution under the same codon. Treatment Emergent Substitutions included participants where a Baseline and post-Baseline records exist. All type of AA mutations have been categorized.

Time frame:
At Day 7, Day 14 and Day 28
Reported as:
Count of participants · Participants
Number of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >5%
ParticipantsSotrovimab 500 mg IV
Day 7, L5-L5F1
Day 7, L5-L5F Frameshift mutation1
Day 7, P39-P39L1
Day 7, G75-G75C1
Day 7, G75-G75V1
Day 7, T95-T95I1
Day 7, F106-F106 Deletion mutation1
Day 7, Y144-Y144 Deletion mutation1
Day 7, H146-H146Q Frameshift mutation1
Day 7, V320-V320A1
Day 7, P330-P330S2
Day 7, P337-P337A2
Day 7, P337-P337H2
Day 7, P337-P337L8
Day 7, P337-P337R2
Day 7, P337-P337S14
Day 7, G339-G339R1
Day 7, G339-G339Y1
Day 7, E340-E340A3
Day 7, E340-E340D15
Day 7, E340-E340G5
Day 7, E340-E340K6
Day 7, E340-E340Q14
Day 7, E340-E340V2
Day 7, K356-K356M1
Day 7, K356-K356R1
Day 7, K356-K356T6
Day 7, S373-S373P1
Day 7, Q474-Q474 Deletion mutation1
Day 7, Q493-Q493K1
Day 7, G496-G496V1
Day 7, V503-V503F1
Day 7, L517-L517F1
Day 7, L517-L517P1
Day 7, T523-T523I1
Day 7, F543-F543L1
Day 7, T547-T547K1
Day 7, K558-K558 Deletion mutation1
Day 7, A570-A570T1
Day 7, T572-T572I1
Day 7, P579-P579L1
Day 7, L585-L585F1
Day 7, C590-C590Y1
Day 7, F592-F592 Deletion mutation1
Day 7, V622-V622I1
Day 7, H625- H625N1
Day 7, S640-S640F1
Day 7, Y660-Y660H2
Day 7, I666- I666 Deletion mutation1
Day 7, G667-G667 Deletion mutation1
Day 7, A668-A668 Deletion mutation1
Day 7, G669-G669 Deletion mutation1
Day 7, I670-I670 Deletion mutation1
Day 7, C671-C671 Deletion mutation1
Day 7, A672-A672 Deletion mutation1
Day 7, S673-S673 Deletion mutation1
Day 7, Y674-Y674 Deletion mutation1
Day 7, Q675-Q675H1
Day 7, L752-L752F1
Day 7, N777-N777 Deletion mutation2
Day 7, I794-I794T1
Day 7, L822-L822 Deletion mutation1
Day 7, L822-L822F1
Day 7, F823-F823 Deletion mutation1
Day 7, A845-A845V1
Day 7, A846-A846T1
Day 7, A846-A846V1
Day 7, I850-I850T1
Day 7, P862-P862S1
Day 7, Q913-Q913 Stop codon mutation1
Day 7, A930-A930 Deletion mutation1
Day 7, Q954-Q954Y1
Day 7, F970-F970L1
Day 7, S974-S974L1
Day 7, V987-V987F1
Day 7, A989-A989V1
Day 7, K1038-K1038E1
Day 7, C1043-C1043 Deletion mutation1
Day 7, H1048-H1048Y1
Day 7, L1049-L1049F2
Day 7, P1053-P1053S1
Day 7, H1058-H1058Y1
Day 7, V1060-V1060I1
Day 7, F1103-F1103S1
Day 7, I1130-I1130L1
Day 7, D1146-D1146H1
Day 7, Q1208-Q1208 Stop codon mutation1
Day 7, Q1208-Q1208H1
Day 7, W1214-W1214C1
Day 7, F1220-F1220 Deletion mutation1
Day 7, C1254-C1254 Stop codon mutation20
Day 7, E1258-E1258H1
Day 7, E1258-E1258Q1
Day 7, P1263-P1263L1
Day 14, L5-L5F1
Day 14, L5-L5 Frameshift mutation1
Day 14, C15-C15F1
Day 14, Q23-Q23 Stop codon mutation1
Day 14, A67-A67V1
Day 14, F79-F79 Deletion mutation1
Day 14, D88-D88G1
Day 14, E132-E132 Deletion mutation1
Day 14, F133-F133 Deletion mutation1
Day 14, D138-D138Y1
Day 14, P139-P139 Deletion mutation2
Day 14, F140-F140 Deletion mutation2
Day 14, L141-L141 Deletion mutation2
Day 14, G142-G142 Deletion mutation2
Day 14, V143-V143 Deletion mutation2
Day 14, Y144-Y144 Deletion mutation3
Day 14, Y145-Y145 Deletion mutation1
Day 14, H146-H146 Deletion mutation1
Day 14, H146-H146Y1
Day 14, W152-W152L1
Day 14, M153-M153I1
Day 14, A243-A243 Deletion mutation1
Day 14, L244-L244 Deletion mutation1
Day 14, P337-P337H1
Day 14, P337-P337L4
Day 14, P337-P337R1
Day 14, P337-P337S6
Day 14, E340-E340D5
Day 14, E340-E340G4
Day 14, E340-E340K5
Day 14, E340-E340Q7
Day 14, E340-E340V2
Day 14, R346-R346T1
Day 14, K356-K356T1
Day 14, T376-T376 Deletion mutation1
Day 14, F377-F377 Deletion mutation1
Day 14, K444-K444S1
Day 14, V503-V503A1
Day 14, Y505-Y505N1
Day 14, R509-R509T1
Day 14, K528-K528E1
Day 14, T547-T547K1
Day 14, A570-A570T1
Day 14, T572-T572I1
Day 14, D574-D574N1
Day 14, L611-L611P1
Day 14, G639-G639V1
Day 14, G669-G669 Deletion mutation1
Day 14, I670-I670N1
Day 14, C671-C671 Deletion mutation1
Day 14, A672-A672 Deletion mutation1
Day 14, S673-S673 Deletion mutation1
Day 14, Y674-Y674 Deletion mutation1
Day 14, Q675-Q675H1
Day 14, A694-A694S1
Day 14, T859-T859 Deletion mutation1
Day 14, V860-V860 Deletion mutation1
Day 14, A879-A879V1
Day 14, A893-A893S1
Day 14, K921-K921 Deletion mutation1
Day 14, V951-V951L1
Day 14, A956-A956E1
Day 14, V987-V987F1
Day 14, R1019-R1019I Frameshift mutation1
Day 14, Y1067-Y1067H1
Day 14, F1089-F1089S1
Day 14, F1095-F1095L1
Day 14, E1150-E1150G1
Day 14, M1229-M1229I1
Day 14, L1244-L1244 Deletion mutation1
Day 14, K1245-K1245 Stop codon mutation1
Day 14, C1254-C1254 Stop codon mutation7
Day 28, F32-F32 Deletion mutation1
Day 28, R78-R78S1
Day 28, F133-F133S1
Day 28, D138-D138Y1
Day 28, P139-P139 Deletion mutation1
Day 28, F140-F140 Deletion mutation1
Day 28, L141-L141 Deletion mutation1
Day 28, G142-G142 Deletion mutation1
Day 28, V143-V143 Deletion mutation1
Day 28, Y144-Y144 Deletion mutation5
Day 28, Y145-Y145 Deletion mutation1
Day 28, H146-H146 Deletion mutation1
Day 28, N148-N148 Deletion mutation1
Day 28, I210-I210N1
Day 28, N211-N211 Deletion mutation1
Day 28, P330-P330S1
Day 28, P337-P337H1
Day 28, P337-P337S2
Day 28, E340-E340A1
Day 28, E340-E340D1
Day 28, E340-E340G2
Day 28, E340-E340K1
Day 28, E340-E340Q4
Day 28, E340-E340V2
Day 28, K356-K356R1
Day 28, K356-K356T1
Day 28, T376-T376 Deletion mutation1
Day 28, F377-F377 Deletion mutation1
Day 28, D420-D420N1
Day 28, G446-G446D1
Day 28, G446-G446R1
Day 28, G476-G476R1
Day 28, N481-N481K1
Day 28, Y489-Y489H1
Day 28, G496-G496V1
Day 28, Y505-Y505N1
Day 28, L513-L513F1
Day 28, L517-L517F1
Day 28, T547-T547K1
Day 28, T572-T572I1
Day 28, S591-S591F1
Day 28, G593-G593V1
Day 28, P631-P631S1
Day 28, Q644-Q644 Frameshift mutation1
Day 28, A647-A647S1
Day 28, Q675-Q675H1
Day 28, T676-T676I1
Day 28, K795-K795 Deletion mutation1
Day 28, Q872-Q872 Stop codon mutation1
Day 28, T883-T883I1
Day 28, A899-A899C Frameshift mutation1
Day 28, D979-D979V1
Day 28, V987-V987F1
Day 28, Q1002-Q1002 Stop codon mutation1
Day 28, A1020-A1020V1
Day 28, H1048-H1048Y1
Day 28, F1103-F1103V1
Day 28, T1117-T1117I1
Day 28, S1123-S1123P1
Day 28, I1227-I1227 Deletion mutation1
Day 28, C1254-C1254 Stop codon mutation5
SecondaryNumber of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >50%

SARS-CoV-2 spike analysis was carried out by nucleotide sequencing of the SARS-CoV-2 spike protein by NGS analysis of participant nasal/oropharyngeal swab samples for samples with viral load above the threshold of the sequencing assay. The nucleotide sequences were translated, and the AA sequences aligned and compared to a reference sequence. For samples with AA changes above the threshold for consensus sequence generation that were not present in the Baseline sequence, AA changes in the SARS-CoV-2 spike protein consensus sequence (\>50%) from Baseline was reported. One participant may have more than one substitution under the same codon. Treatment Emergent Substitutions included participants where a Baseline and post-Baseline records exist. All type of AA mutations have been categorized.

Time frame:
At Day 7, Day 14 and Day 28
Reported as:
Count of participants · Participants
Number of Participants With Treatment-emergent Amino Acid Substitutions in the Spike Protein for Any Substitutions at Allelic Frequency >50%
ParticipantsSotrovimab 500 mg IV
Day 7, G75-G75V1
Day 7, P337-P337L1
Day 7, P337-P337S3
Day 7, E340-E340A1
Day 7, E340-E340D2
Day 7, E340-E340G1
Day 7, E340-E340K1
Day 7, E340-E340Q3
Day 7, S373-S373P1
Day 7, Q675-Q675H1
Day 7, L752-L752F1
Day 7, A845-A845V1
Day 7, A846-A846T1
Day 7, Q913-Q913 Stop codon mutation1
Day 7, P1053-P1053S1
Day 14, L5-L5F1
Day 14, Y144-Y144 Deletion mutation1
Day 14, P337-P337L1
Day 14, P337-P337S1
Day 14, E340-E340D3
Day 14, E340-E340K1
Day 14, E340-E340Q3
Day 14, E340-E340V1
Day 14, K356-K356T1
Day 14, V503-V503A1
Day 14, Y505-Y505N1
Day 14, A570-A570T1
Day 14, T572-T572I1
Day 14, D574-D574N1
Day 14, I670- I670N1
Day 14, C671-C671 Deletion mutation1
Day 14, A672-A672 Deletion mutation1
Day 14, S673-S673 Deletion mutation1
Day 14, Y674-Y674 Deletion mutation1
Day 14, A956-A956E1
Day 14, L1244-L1244 Deletion mutation1
Day 28, Y144-Y144 Deletion mutation3
Day 28, I210-I210N1
Day 28, N211-N211 Deletion mutation1
Day 28, P337-P337S2
Day 28, E340-E340A1
Day 28, E340-E340D1
Day 28, E340-E340G1
Day 28, E340-E340K1
Day 28, E340-E340Q3
Day 28, E340-E340V1
Day 28, K356-K356R1
Day 28, D420-D420N1
Day 28, G446-G446D1
Day 28, N481-N481K1
Day 28, T572-T572I1
Day 28, P631-P631S1
Day 28, A647-A647S1
Day 28, T676-T676I1
Day 28, Q1002-Q1002 Stop codon mutation1

Adverse events

Collected over Up to Day 28. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Sotrovimab 500 mg IV1/217 (0.5%)0/217 (0%)6/217 (2.8%)
Most frequent other events
Most frequent other events
EventSotrovimab 500 mg IV
DiarrhoeaGastrointestinal disorders1/217
Blood creatinine increasedInvestigations1/217
Neutrophil count increasedInvestigations1/217
White blood cell count increasedInvestigations1/217
AgeusiaNervous system disorders1/217
AnosmiaNervous system disorders1/217
HeadacheNervous system disorders1/217
PruritusSkin and subcutaneous tissue disorders1/217

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Sotrovimab 500 mg IV
Mean56.5 ± 15.66
Sex: Female, Male
Sex: Female, Male(Participants)Sotrovimab 500 mg IV
Female123
Male94
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Sotrovimab 500 mg IV
White49
White - White/Caucasian/European Heritage139
De-identified29
08

Study locations

8 sites
  • GSK Investigational Site
    Birmingham, B15 2GW, United Kingdom
  • GSK Investigational Site
    Cambridge, CB2 0QQ, United Kingdom
  • GSK Investigational Site
    Cardiff, CF14 4XW, United Kingdom
  • GSK Investigational Site
    London, NW1 2BU, United Kingdom
  • GSK Investigational Site
    London, SE1 7EH, United Kingdom
  • GSK Investigational Site
    Middlesbrough, TS4 3BW, United Kingdom
  • GSK Investigational Site
    Newcastle upon Tyne, NE1 4LP, United Kingdom
  • GSK Investigational Site
    Plymouth, PL6 5FP, United Kingdom
09

References and documents

Publications

  • Breuer J, Drysdale M, Walker J, Han J, Aylott A, Van Dyke MK, Birch HJ, McKie E, Jordan W, Gemzoe K, Gillespie IA, Bethune C, Williams CA, Underwood J, Goodman AL, Brown M, Brown JR, Williams R, Bernal LMM, Buggiotti L, Gkrania-Klotsas E, Green C, Hunter E, Miller C, Skingsley A, Lowe DM. Monitoring the emergence of resistance with sotrovimab in immunocompromised patients with COVID-19: LUNAR study. J Infect. 2025 Jul;91(1):106510. doi: 10.1016/j.jinf.2025.106510. Epub 2025 May 19. PubMed 40398499 ↗

Study documents

  • Study protocol · Jan 24, 2023
  • Statistical analysis plan · Jul 18, 2023

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Yes — Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.gsk-studyregister.com/About\_GSK\_Patient\_Level\_Data\_Sharing\_Final\_13July2023.pdf

Supporting information: Study protocol, Sap, Icf, Csr

10

Updates

1 registry update since Sep 25, 2026
Sites
1 site added, 1 site removed
Show site
  • GSK Investigational Site · Birmingham, United Kingdom
Show 1 removed
  • GSK Investigational Site · EdgbastonBirmingham, United Kingdom
Oct 6, 2026
Study completion
Jul 17, 2023→Jul 19, 2023
Oct 6, 2026
Show all 1 update
  1. Oct 6, 2026
    1 site added, 1 site removed
    Show site
    • GSK Investigational Site · Birmingham, United Kingdom
    Show 1 removed
    • GSK Investigational Site · EdgbastonBirmingham, United Kingdom
    Study completion Jul 17, 2023→Jul 19, 2023
    + 4 other changes: index terms, verification date, references and data sharing statement

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

11

Registry details

Key details

Study ID
NCT05305651
Lead sponsor
GlaxoSmithKline
Responsible party
Sponsor
First posted
Mar 31, 2022
Start date
Jul 1, 2022
Primary completion
Jul 17, 2023
Completion
Jul 19, 2023
Results posted
Oct 15, 2024
Last update
Oct 6, 2026

Study contacts

GSK Clinical Trials
study director · GlaxoSmithKline

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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