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    Clinical Trial Results:
    A Phase 2 Study of Cemiplimab, an Anti-PD-1 Monoclonal Antibody, and ISA101b Vaccine in Patients with Recurrent/Metastatic HPV16 Cervical Cancer Who Have Experienced Disease Progression after First Line Chemotherapy

    Summary
    EudraCT number
    2020-001239-29
    Trial protocol
    NL   BE   IT  
    Global end of trial date
    29 May 2024

    Results information
    Results version number
    v1(current)
    This version publication date
    13 Jun 2025
    First version publication date
    13 Jun 2025
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    R2810-ONC-ISA-1981
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT04646005
    WHO universal trial number (UTN)
    -
    Sponsors
    Sponsor organisation name
    Regeneron Pharmaceuticals, Inc.
    Sponsor organisation address
    777 Old Saw Mill River Road, Tarrytown, NY, United States, 10591
    Public contact
    Clinical Trials Administrator, Regeneron Pharmaceuticals, Inc., 001 844-734-6643, clinicaltrials@regeneron.com
    Scientific contact
    Clinical Trials Administrator, Regeneron Pharmaceuticals, Inc., 001 844-734-6643, clinicaltrials@regeneron.com
    Paediatric regulatory details
    Is trial part of an agreed paediatric investigation plan (PIP)
    No
    Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial?
    No
    Results analysis stage
    Analysis stage
    Final
    Date of interim/final analysis
    29 May 2024
    Is this the analysis of the primary completion data?
    No
    Global end of trial reached?
    Yes
    Global end of trial date
    29 May 2024
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    The primary objective of the study is to estimate the clinical benefit of cemiplimab + ISA101b after progression on first line chemotherapy, as assessed by objective response rate (ORR).
    Protection of trial subjects
    It is the responsibility of both the sponsor and the investigator(s) to ensure that this clinical study will be conducted in accordance with the ethical principles that have their origin in the Declaration of Helsinki, and that are consistent with the ICH guidelines for GCP and applicable regulatory requirements.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    28 Jun 2021
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    No
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Belgium: 10
    Country: Number of subjects enrolled
    Brazil: 24
    Country: Number of subjects enrolled
    Italy: 38
    Country: Number of subjects enrolled
    Korea, Republic of: 13
    Country: Number of subjects enrolled
    Netherlands: 15
    Country: Number of subjects enrolled
    Spain: 13
    Worldwide total number of subjects
    113
    EEA total number of subjects
    76
    Number of subjects enrolled per age group
    In utero
    0
    Preterm newborn - gestational age < 37 wk
    0
    Newborns (0-27 days)
    0
    Infants and toddlers (28 days-23 months)
    0
    Children (2-11 years)
    0
    Adolescents (12-17 years)
    0
    Adults (18-64 years)
    98
    From 65 to 84 years
    15
    85 years and over
    0

    Subject disposition

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    Recruitment
    Recruitment details
    -

    Pre-assignment
    Screening details
    229 participants were screened, and of these, 113 were enrolled and 116 were screen failures.

    Period 1
    Period 1 title
    Overall Study (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Non-randomised - controlled
    Blinding used
    Not blinded

    Arms
    Arm title
    ISA 101b + Cemiplimab 350 mg Q3W
    Arm description
    A dose of 100 μg/peptide ISA101b on days 1, 29, and 50 (total of 3 doses). Cemiplimab 350 mg (milligrams) given by IV (intravenous) infusion over 30 minutes Q3W (every 3 weeks) on days 8 and 29 in cycle 1, on days 1 and 22 in cycles 2 through 4, and on days 1, 22, and 43 in all subsequent cycles until disease progression or discontinuation of study drug
    Arm type
    Experimental

    Investigational medicinal product name
    Cemiplimab
    Investigational medicinal product code
    REGN2810
    Other name
    Libtayo
    Pharmaceutical forms
    Concentrate for solution for injection/infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    Administered intravenously (IV) every three weeks (Q3W)

    Investigational medicinal product name
    ISA101b
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Powder and solvent for solution for injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    Administered by subcutaneous (SC) injection on day 1, day 29, and day 50

    Number of subjects in period 1
    ISA 101b + Cemiplimab 350 mg Q3W
    Started
    113
    Completed
    0
    Not completed
    113
         Adverse event, serious fatal
    20
         Consent withdrawn by subject
    12
         Adverse event, non-fatal
    1
         Progressive Disease
    71
         Sponsor Request
    9

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    ISA 101b + Cemiplimab 350 mg Q3W
    Reporting group description
    A dose of 100 μg/peptide ISA101b on days 1, 29, and 50 (total of 3 doses). Cemiplimab 350 mg (milligrams) given by IV (intravenous) infusion over 30 minutes Q3W (every 3 weeks) on days 8 and 29 in cycle 1, on days 1 and 22 in cycles 2 through 4, and on days 1, 22, and 43 in all subsequent cycles until disease progression or discontinuation of study drug

    Reporting group values
    ISA 101b + Cemiplimab 350 mg Q3W Total
    Number of subjects
    113 113
    Age Categorical
    Units: Subjects
        In utero
        Preterm newborn infants (gestational age < 37 wks)
        Newborns (0-27 days)
        Infants and toddlers (28 days-23 months)
        Children (2-11 years)
        Adolescents (12-17 years)
        Adults (18-64 years)
        From 65-84 years
        85 years and over
    Age Continuous
    Units: years
        arithmetic mean (standard deviation)
    49.4 ( 11.96 ) -
    Gender Categorical
    Units: Subjects
        Female
    113 113
        Male
    0 0
    Ethnicity (NIH/OMB)
    Units: Subjects
        Hispanic or Latino
    25 25
        Not Hispanic or Latino
    88 88
        Unknown or Not Reported
    0 0
    Race (NIH/OMB)
    Units: Subjects
        American Indian or Alaska Native
    0 0
        Asian
    14 14
        Native Hawaiian or Other Pacific Islander
    1 1
        Black or African American
    3 3
        White
    91 91
        More than one race
    2 2
        Unknown or Not Reported
    2 2

    End points

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    End points reporting groups
    Reporting group title
    ISA 101b + Cemiplimab 350 mg Q3W
    Reporting group description
    A dose of 100 μg/peptide ISA101b on days 1, 29, and 50 (total of 3 doses). Cemiplimab 350 mg (milligrams) given by IV (intravenous) infusion over 30 minutes Q3W (every 3 weeks) on days 8 and 29 in cycle 1, on days 1 and 22 in cycles 2 through 4, and on days 1, 22, and 43 in all subsequent cycles until disease progression or discontinuation of study drug

    Primary: Objective response rate (ORR)

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    End point title
    Objective response rate (ORR) [1]
    End point description
    Objective response rate (ORR) is determined by the proportion of participants with best overall response of complete response (CR) or partial response (PR) in the Full analysis set (FAS).
    End point type
    Primary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    Notes
    [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point.
    Justification: Per PA4, statistical hypothesis testing was removed and administrative efficacy review would be completed
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Percentage of Participants
        number (confidence interval 95%)
    17.7 (10.7 to 24.7)
    No statistical analyses for this end point

    Secondary: Number of Treatment Emergent Adverse Events (TEAEs)

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    End point title
    Number of Treatment Emergent Adverse Events (TEAEs)
    End point description
    Treatment-emergent AEs (TEAEs) are defined as AEs that developed or worsened during the on-treatment period and treatment-related AEs that occur during post-treatment period. The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Events
        number (not applicable)
    877
    No statistical analyses for this end point

    Secondary: Number of participants with at least one lab abnormality

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    End point title
    Number of participants with at least one lab abnormality
    End point description
    The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Particpants
        Hematology Overall (n=113)
    88
        Electrolytes Overall (n=104)
    56
        Liver function overall (n=104)
    66
        Chemistry Overall (n=104)
    33
        Coagulation Overall (n=98)
    9
    No statistical analyses for this end point

    Secondary: Number of Participants with any serious TEAE

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    End point title
    Number of Participants with any serious TEAE
    End point description
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Participants
    31
    No statistical analyses for this end point

    Secondary: Number of Participants with any Treatment Emergent Adverse Events (TEAEs)

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    End point title
    Number of Participants with any Treatment Emergent Adverse Events (TEAEs)
    End point description
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Participants
    106
    No statistical analyses for this end point

    Secondary: Number of Participants with any Treatment-Emergent Adverse Events of Special Interest (TE AESIs)

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    End point title
    Number of Participants with any Treatment-Emergent Adverse Events of Special Interest (TE AESIs)
    End point description
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Participants
    10
    No statistical analyses for this end point

    Secondary: Number of participants with at least one lab abnormality with severity of ≥ grade 3

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    End point title
    Number of participants with at least one lab abnormality with severity of ≥ grade 3
    End point description
    Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living Grade 4 Life-threatening consequences; urgent intervention indicated. Grade 5 Death related to AE. The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Participants
        Hematology Overall (n=113)
    27
        Electrolytes Overall (n=104)
    3
        Liver function Overall (n=104)
    3
        Chemistry Overall (n=104)
    3
        Coagulation Overall (n=98)
    0
    No statistical analyses for this end point

    Secondary: Progression free survival (PFS)

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    End point title
    Progression free survival (PFS)
    End point description
    The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Months
        median (confidence interval 95%)
    3.0 (1.7 to 4.0)
    No statistical analyses for this end point

    Secondary: Duration of response (DOR)

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    End point title
    Duration of response (DOR)
    End point description
    The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    20
    Units: Events
        median (confidence interval 95%)
    7.3 (3.5 to 19.9)
    No statistical analyses for this end point

    Secondary: Overall survival (OS)

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    End point title
    Overall survival (OS)
    End point description
    The full analysis set (FAS) included all enrolled participants who received any study drug.
    End point type
    Secondary
    End point timeframe
    From enrollment to last dose (~up to 23 months)
    End point values
    ISA 101b + Cemiplimab 350 mg Q3W
    Number of subjects analysed
    113
    Units: Months
        median (confidence interval 95%)
    14.3 (11.7 to 17.3)
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    From signing of informed consent to end of study (~up to 28 months)
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    MedDRA
    Dictionary version
    26.1
    Reporting groups
    Reporting group title
    ISA 101b + Cemiplimab 350 mg Q3W
    Reporting group description
    A dose of 100 μg/peptide ISA101b on days 1, 29, and 50 (total of 3 doses). Cemiplimab 350 mg (milligrams) given by IV (intravenous) infusion over 30 minutes Q3W (every 3 weeks) on days 8 and 29 in cycle 1, on days 1 and 22 in cycles 2 through 4, and on days 1, 22, and 43 in all subsequent cycles until disease progression or discontinuation of study drug

    Serious adverse events
    ISA 101b + Cemiplimab 350 mg Q3W
    Total subjects affected by serious adverse events
         subjects affected / exposed
    34 / 113 (30.09%)
         number of deaths (all causes)
    68
         number of deaths resulting from adverse events
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Acute myeloid leukaemia
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Vascular disorders
    Lymphoedema
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General disorders and administration site conditions
    Malaise
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    General physical health deterioration
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Asthenia
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Reproductive system and breast disorders
    Female genital tract fistula
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Vaginal haemorrhage
         subjects affected / exposed
    3 / 113 (2.65%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Dyspnoea
         subjects affected / exposed
    2 / 113 (1.77%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 1
    Pneumonitis
         subjects affected / exposed
    3 / 113 (2.65%)
         occurrences causally related to treatment / all
    2 / 3
         deaths causally related to treatment / all
    1 / 1
    Respiratory failure
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Chronic obstructive pulmonary disease
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Psychiatric disorders
    Mental disorder
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Product issues
    Device dislocation
         subjects affected / exposed
    2 / 113 (1.77%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Gastrointestinal disorders
    Pancreatitis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Intestinal perforation
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Intestinal obstruction
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Dysphagia
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Colitis ischaemic
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Colitis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Abdominal pain
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Hepatobiliary disorders
    Cholecystitis
         subjects affected / exposed
    2 / 113 (1.77%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    Skin and subcutaneous tissue disorders
    Actinic keratosis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Renal and urinary disorders
    Acute kidney injury
         subjects affected / exposed
    2 / 113 (1.77%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Renal haematoma
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Urinary tract obstruction
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Hydronephrosis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Urogenital fistula
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Endocrine disorders
    Hypothyroidism
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    Infections and infestations
    Sepsis
         subjects affected / exposed
    3 / 113 (2.65%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 2
    Vaginal infection
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Skin infection
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Skin bacterial infection
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pyelonephritis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pulmonary tuberculosis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Pneumonia
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 1
    Osteomyelitis
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Kidney infection
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    COVID-19
         subjects affected / exposed
    1 / 113 (0.88%)
         occurrences causally related to treatment / all
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    Urosepsis
         subjects affected / exposed
    2 / 113 (1.77%)
         occurrences causally related to treatment / all
    0 / 2
         deaths causally related to treatment / all
    0 / 0
    Urinary tract infection
         subjects affected / exposed
    3 / 113 (2.65%)
         occurrences causally related to treatment / all
    0 / 3
         deaths causally related to treatment / all
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 5%
    Non-serious adverse events
    ISA 101b + Cemiplimab 350 mg Q3W
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    99 / 113 (87.61%)
    Vascular disorders
    Hypotension
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    6
    General disorders and administration site conditions
    Injection site reaction
         subjects affected / exposed
    44 / 113 (38.94%)
         occurrences all number
    58
    Fatigue
         subjects affected / exposed
    21 / 113 (18.58%)
         occurrences all number
    25
    Asthenia
         subjects affected / exposed
    15 / 113 (13.27%)
         occurrences all number
    16
    Oedema peripheral
         subjects affected / exposed
    8 / 113 (7.08%)
         occurrences all number
    8
    Pyrexia
         subjects affected / exposed
    22 / 113 (19.47%)
         occurrences all number
    32
    Influenza like illness
         subjects affected / exposed
    7 / 113 (6.19%)
         occurrences all number
    11
    Reproductive system and breast disorders
    Vaginal haemorrhage
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    7
    Respiratory, thoracic and mediastinal disorders
    Dyspnoea
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    6
    Cough
         subjects affected / exposed
    8 / 113 (7.08%)
         occurrences all number
    12
    Psychiatric disorders
    Insomnia
         subjects affected / exposed
    8 / 113 (7.08%)
         occurrences all number
    8
    Investigations
    Blood alkaline phosphatase increased
         subjects affected / exposed
    7 / 113 (6.19%)
         occurrences all number
    9
    Aspartate aminotransferase increased
         subjects affected / exposed
    7 / 113 (6.19%)
         occurrences all number
    9
    Blood creatinine increased
         subjects affected / exposed
    8 / 113 (7.08%)
         occurrences all number
    11
    Alanine aminotransferase increased
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    9
    Injury, poisoning and procedural complications
    Infusion related reaction
         subjects affected / exposed
    7 / 113 (6.19%)
         occurrences all number
    7
    Nervous system disorders
    Headache
         subjects affected / exposed
    12 / 113 (10.62%)
         occurrences all number
    14
    Blood and lymphatic system disorders
    Anaemia
         subjects affected / exposed
    31 / 113 (27.43%)
         occurrences all number
    51
    Gastrointestinal disorders
    Constipation
         subjects affected / exposed
    14 / 113 (12.39%)
         occurrences all number
    15
    Abdominal pain upper
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    6
    Diarrhoea
         subjects affected / exposed
    16 / 113 (14.16%)
         occurrences all number
    20
    Abdominal pain
         subjects affected / exposed
    15 / 113 (13.27%)
         occurrences all number
    16
    Vomiting
         subjects affected / exposed
    17 / 113 (15.04%)
         occurrences all number
    22
    Nausea
         subjects affected / exposed
    27 / 113 (23.89%)
         occurrences all number
    35
    Skin and subcutaneous tissue disorders
    Pruritus
         subjects affected / exposed
    7 / 113 (6.19%)
         occurrences all number
    8
    Endocrine disorders
    Hyperthyroidism
         subjects affected / exposed
    9 / 113 (7.96%)
         occurrences all number
    9
    Hypothyroidism
         subjects affected / exposed
    9 / 113 (7.96%)
         occurrences all number
    9
    Musculoskeletal and connective tissue disorders
    Pain in extremity
         subjects affected / exposed
    10 / 113 (8.85%)
         occurrences all number
    11
    Arthralgia
         subjects affected / exposed
    11 / 113 (9.73%)
         occurrences all number
    13
    Back pain
         subjects affected / exposed
    10 / 113 (8.85%)
         occurrences all number
    10
    Myalgia
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    6
    Infections and infestations
    COVID-19
         subjects affected / exposed
    6 / 113 (5.31%)
         occurrences all number
    6
    Urinary tract infection
         subjects affected / exposed
    10 / 113 (8.85%)
         occurrences all number
    13
    Metabolism and nutrition disorders
    Decreased appetite
         subjects affected / exposed
    14 / 113 (12.39%)
         occurrences all number
    16

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    14 Sep 2020
    Provided total study duration; clarified the order of ISA101b and cemiplimab administration; updated testing specifics prior to screening period; provided language regarding study-conduct during COVID-19 pandemic; updated to be consistent with company-wide language; minor typographical edits
    31 Aug 2021
    Added participant group and increased sample size; removed statistical hypothesis testing and added option for administrative efficacy review; language updates; updates to provide clarity on timing of assessments; corrections of administrative language; minor editorial updates

    Interruptions (globally)

    Were there any global interruptions to the trial? No

    Limitations and caveats

    Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data.
    None reported
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