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    Clinical Trial Results:
    Phase II open-label, multicenter, randomized trial of neoadjuvant palbociclib in combination with hormonal therapy and HER2 blockade versus paclitaxel in combination with HER2 blockade for postmenopausal patients with hormone receptor positive/HER2 positive early breast cancer

    Summary
    EudraCT number
    2017-005067-40
    Trial protocol
    BE   IT  
    Global end of trial date
    20 Apr 2023

    Results information
    Results version number
    v1(current)
    This version publication date
    28 May 2025
    First version publication date
    28 May 2025
    Other versions

    Trial information

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    Trial identification
    Sponsor protocol code
    IBCSG 55-17
    Additional study identifiers
    ISRCTN number
    -
    US NCT number
    NCT03644186
    WHO universal trial number (UTN)
    -
    Other trial identifiers
    Pfizer number: WI223904: Roche number: MO40405
    Sponsors
    Sponsor organisation name
    ETOP IBCSG Partners Foundation
    Sponsor organisation address
    Effingerstrasse 33, Bern, Switzerland, 3008
    Public contact
    ETOP IBCSG Partners Regulatory Office, ETOP IBCSG Partners Foundation, +41 31 511 94 00, ibcsg-regulatory@etop.ibcsg.org
    Scientific contact
    ETOP IBCSG Partners Regulatory Office, ETOP IBCSG Partners Foundation, +41 31 511 94 00, ibcsg-regulatory@etop.ibcsg.org
    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
    20 Apr 2023
    Is this the analysis of the primary completion data?
    Yes
    Primary completion date
    03 Jan 2023
    Global end of trial reached?
    Yes
    Global end of trial date
    20 Apr 2023
    Was the trial ended prematurely?
    No
    General information about the trial
    Main objective of the trial
    The primary objective is to explore the interaction between the RBsig status and treatment activity, assessed by pathological complete response (pCR), of palbociclib + letrozole versus paclitaxel when given with trastuzumab plus pertuzumab for ER+/HER2+ primary BC.
    Protection of trial subjects
    Participating institutions’ ethics committees or Institutional Review Boards approved the trial according to local laws and regulations. All patients gave written informed consent, and the trial was performed in compliance with the Helsinki Declaration. The Data Safety and Monitoring Board reviewed the data from this research throughout the study.
    Background therapy
    -
    Evidence for comparator
    -
    Actual start date of recruitment
    04 Oct 2018
    Long term follow-up planned
    No
    Independent data monitoring committee (IDMC) involvement?
    Yes
    Population of trial subjects
    Number of subjects enrolled per country
    Country: Number of subjects enrolled
    Switzerland: 28
    Country: Number of subjects enrolled
    Belgium: 21
    Country: Number of subjects enrolled
    France: 13
    Country: Number of subjects enrolled
    Italy: 85
    Worldwide total number of subjects
    147
    EEA total number of subjects
    119
    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)
    46
    From 65 to 84 years
    100
    85 years and over
    1

    Subject disposition

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    Recruitment
    Recruitment details
    The first patient was enrolled on 16 April 2019. The last patient was enrolled on 28 July 2022. The final accrual is 147 patients (target 144).

    Pre-assignment
    Screening details
    This trial used an IBCSG web-based randomization system, accessed directly by the participating centers. Eligible patients (Appendix A1) were randomized 1:1 to the two treatment arms.

    Period 1
    Period 1 title
    Overall Study (overall period)
    Is this the baseline period?
    Yes
    Allocation method
    Randomised - controlled
    Blinding used
    Not blinded
    Blinding implementation details
    none

    Arms
    Are arms mutually exclusive
    Yes

    Arm title
    Paclitaxel + HP
    Arm description
    Paclitaxel 80 mg/m2 iv on day 1,8,15 every 28 days for 4 cycles Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses
    Arm type
    Experimental

    Investigational medicinal product name
    Paclitaxel
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Concentrate for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    80 mg/m2 iv on day 1,8,15 every 28 days for 4 cycles

    Investigational medicinal product name
    Trastuzumab
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Solution for injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    600 mg sc every 3 weeks for 5 doses

    Investigational medicinal product name
    Pertuzumab
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Concentrate for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Arm title
    Palbociclib + Letrozole + HP
    Arm description
    Palbociclib 125 mg/day orally for 21 days then 7 days rest, for 4 28-day cycles Letrozole 2.5 mg/day orally for 16 weeks Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses
    Arm type
    Experimental

    Investigational medicinal product name
    Palbociclib
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Capsule, hard
    Routes of administration
    Oral use
    Dosage and administration details
    125 mg/day orally for 21 days then 7 days rest, for 4 28-day cycles

    Investigational medicinal product name
    Letrozole
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Film-coated tablet
    Routes of administration
    Oral use
    Dosage and administration details
    2.5 mg/day orally for 16 weeks

    Investigational medicinal product name
    Trastuzumab
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Solution for injection
    Routes of administration
    Subcutaneous use
    Dosage and administration details
    600 mg sc every 3 weeks for 5 doses

    Investigational medicinal product name
    Pertuzumab
    Investigational medicinal product code
    Other name
    Pharmaceutical forms
    Concentrate for solution for infusion
    Routes of administration
    Intravenous use
    Dosage and administration details
    840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Number of subjects in period 1
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Started
    74
    73
    Completed
    73
    72
    Not completed
    1
    1
         Consent withdrawn by subject
    1
    1

    Baseline characteristics

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    Baseline characteristics reporting groups
    Reporting group title
    Paclitaxel + HP
    Reporting group description
    Paclitaxel 80 mg/m2 iv on day 1,8,15 every 28 days for 4 cycles Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Reporting group title
    Palbociclib + Letrozole + HP
    Reporting group description
    Palbociclib 125 mg/day orally for 21 days then 7 days rest, for 4 28-day cycles Letrozole 2.5 mg/day orally for 16 weeks Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Reporting group values
    Paclitaxel + HP Palbociclib + Letrozole + HP Total
    Number of subjects
    74 73 147
    Age categorical
    Units: Subjects
        Adults (18-64 years)
    21 25 46
        From 65-84 years
    52 48 100
        85 years and over
    1 0 1
    Gender categorical
    Units: Subjects
        Female
    74 73 147
        Male
    0 0 0
    Subject analysis sets

    Subject analysis set title
    Treatment Population
    Subject analysis set type
    Intention-to-treat
    Subject analysis set description
    Out of 147 randomized patients 2 patients have not started any protocol treatment.

    Subject analysis sets values
    Treatment Population
    Number of subjects
    145
    Age categorical
    Units: Subjects
        Adults (18-64 years)
    46
        From 65-84 years
    99
        85 years and over
    1
    Age continuous
    Units:
        
    ( )
    Gender categorical
    Units: Subjects
        Female
    145
        Male
    0

    End points

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    End points reporting groups
    Reporting group title
    Paclitaxel + HP
    Reporting group description
    Paclitaxel 80 mg/m2 iv on day 1,8,15 every 28 days for 4 cycles Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Reporting group title
    Palbociclib + Letrozole + HP
    Reporting group description
    Palbociclib 125 mg/day orally for 21 days then 7 days rest, for 4 28-day cycles Letrozole 2.5 mg/day orally for 16 weeks Trastuzumab 600 mg sc every 3 weeks for 5 doses Pertuzumab 840 mg iv loading dose, then 420 mg iv every 3 weeks for 5 doses

    Subject analysis set title
    Treatment Population
    Subject analysis set type
    Intention-to-treat
    Subject analysis set description
    Out of 147 randomized patients 2 patients have not started any protocol treatment.

    Primary: Pathological Complete Response (pCR)

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    End point title
    Pathological Complete Response (pCR) [1]
    End point description
    Pathological complete response pCR, defined as absence of invasive tumor cells in the breast and in the axillary lymph nodes at the time of surgery (ypT0/ypTis ypN0).
    End point type
    Primary
    End point timeframe
    Assessed within 30 days of the time of breast surgery after completion of a treatment period of up to 16 weeks; up to 21 weeks. If the patient does not undergo surgery, assessment will occur within 30 days after all treatment is stopped; up to 30 weeks.
    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: No statistical analysis will be specified for this primary end point.
    End point values
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Number of subjects analysed
    73
    72
    Units: Participants
    24
    24
    No statistical analyses for this end point

    Secondary: Pathological Complete Response (pCR) in the breast

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    End point title
    Pathological Complete Response (pCR) in the breast
    End point description
    Defined as the absence of invasive tumour cells in the breast at the time of surgery (ypT0/ypTis) determined from the local histopathologic evaluation according to the American Joint Committee on Cancer Staging Manual.
    End point type
    Secondary
    End point timeframe
    Assessed within 30 days of the time of breast surgery after completion of a treatment period of up to 16 weeks; up to 21 weeks. If the patient does not undergo surgery, assessment will occur within 30 days after all treatment is stopped; up to 30 weeks.
    End point values
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Number of subjects analysed
    73
    72
    Units: Participants
    26
    25
    No statistical analyses for this end point

    Secondary: Objective Response

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    End point title
    Objective Response
    End point description
    The number of patients with partial or complete response measured physically by caliper and by ultrasound and mammography. Response was assessed using World Health Organization tumor measurement and response criteria. Complete response (CR) - The disappearance of all known disease. Partial response (PR) - A 50% or more decrease in total tumor size, i.e., the sum of the products of the maximal diameter (MD) and the corresponding largest perpendicular diameter (LPD) of the lesions which have been measured to determine the effect of therapy. In addition, there can be no appearance of new lesions or progression of any lesion. Stable disease (SD) - Neither a 50% decrease in total tumor size, nor a 25% increase in the size of one or more measurable lesions has been determined. Progressive disease (PD) - An increase of least 25% in total tumor size relative to the smallest size measured during the trial
    End point type
    Secondary
    End point timeframe
    Tumor assessments were performed by ultrasound and mammography at screening (prior to treatment start), and before surgery; measurements by caliper were assessed at the same time points and at the end of cycle 2 (28 days/cycle), approximately 56 days.
    End point values
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Number of subjects analysed
    73
    72
    Units: Participants
        Objective response - complete response
    35
    38
        Objective response - partial response
    17
    19
        Objective response - stable disease
    4
    4
        Objective response - progressive disease
    3
    2
        Objective response - not evaluable
    14
    9
    No statistical analyses for this end point

    Secondary: Rate of Breast Conserving Surgery (BCS)

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    End point title
    Rate of Breast Conserving Surgery (BCS)
    End point description
    Defined as the number of patients undergoing BCS, divided by the number of patients in the assessable population (subset of the randomized population with RBsig status successfully determined who received at least 1 dose of medication).
    End point type
    Secondary
    End point timeframe
    From randomization until completion of study, up to 20 months
    End point values
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Number of subjects analysed
    73
    72
    Units: Participants
    49
    59
    No statistical analyses for this end point

    Adverse events

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    Adverse events information
    Timeframe for reporting adverse events
    Assessed at the end of every 4-week cycle until the end of trial treatment prior to surgery; up to 20 weeks. Only serious adverse events were assessed 30 days after end of treatment; up to 21 weeks.
    Adverse event reporting additional description
    The severity and causality will be classified according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 5. The CTCAE is available for downloading on the internet at http://evs.nci.nih.gov/ftp1/CTCAE/About.html. For this trial, Grade 1s were not collected for non-targeted adverse events and hence
    Assessment type
    Systematic
    Dictionary used for adverse event reporting
    Dictionary name
    CTCAE
    Dictionary version
    5
    Reporting groups
    Reporting group title
    Paclitaxel + HP
    Reporting group description
    -

    Reporting group title
    Palbociclib + Letrozole + HP
    Reporting group description
    -

    Serious adverse events
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Total subjects affected by serious adverse events
         subjects affected / exposed
    23 / 73 (31.51%)
    39 / 72 (54.17%)
         number of deaths (all causes)
    0
    0
         number of deaths resulting from adverse events
    0
    0
    Vascular disorders
    Hypertension
         subjects affected / exposed
    2 / 73 (2.74%)
    4 / 72 (5.56%)
         occurrences causally related to treatment / all
    2 / 2
    1 / 10
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    General disorders and administration site conditions
    Fatigue
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Respiratory, thoracic and mediastinal disorders
    Pneumonitis
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Investigations
    Neutrophil count decreased
         subjects affected / exposed
    5 / 73 (6.85%)
    31 / 72 (43.06%)
         occurrences causally related to treatment / all
    6 / 6
    66 / 66
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Alanine aminotransferase increased
         subjects affected / exposed
    1 / 73 (1.37%)
    3 / 72 (4.17%)
         occurrences causally related to treatment / all
    1 / 1
    4 / 6
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Aspartate aminotransferase increased
         subjects affected / exposed
    1 / 73 (1.37%)
    3 / 72 (4.17%)
         occurrences causally related to treatment / all
    1 / 1
    4 / 4
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Blood bilirubin increased
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    White blood cell decreased
         subjects affected / exposed
    1 / 73 (1.37%)
    1 / 72 (1.39%)
         occurrences causally related to treatment / all
    1 / 1
    1 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Injury, poisoning and procedural complications
    Hip fracture
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Cardiac disorders
    Left ventricular systolic dysfunction
         subjects affected / exposed
    1 / 73 (1.37%)
    2 / 72 (2.78%)
         occurrences causally related to treatment / all
    1 / 1
    3 / 3
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Nervous system disorders
    Peripheral sensory neuropathy
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    5 / 5
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Eye disorders
    Eye disorders - Other, specify
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Gastrointestinal disorders
    Diarrhea
         subjects affected / exposed
    8 / 73 (10.96%)
    6 / 72 (8.33%)
         occurrences causally related to treatment / all
    10 / 11
    8 / 8
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Ileal obstruction
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Small intestinal obstruction
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Skin and subcutaneous tissue disorders
    Skin and cutaneous disorders
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Alopecia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    2 / 2
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Renal and urinary disorders
    Acute kidney injury
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences causally related to treatment / all
    0 / 0
    0 / 1
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Musculoskeletal and connective tissue disorders
    Bone pain
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    0 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Infections and infestations
    Infections
         subjects affected / exposed
    0 / 73 (0.00%)
    2 / 72 (2.78%)
         occurrences causally related to treatment / all
    0 / 0
    1 / 2
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Ejection fraction decreased
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Metabolism and nutrition disorders
    Hypokalemia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Muscle cramp
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences causally related to treatment / all
    1 / 1
    0 / 0
         deaths causally related to treatment / all
    0 / 0
    0 / 0
    Frequency threshold for reporting non-serious adverse events: 0%
    Non-serious adverse events
    Paclitaxel + HP Palbociclib + Letrozole + HP
    Total subjects affected by non serious adverse events
         subjects affected / exposed
    68 / 73 (93.15%)
    69 / 72 (95.83%)
    Vascular disorders
    Thromboembolic event
         subjects affected / exposed
    2 / 73 (2.74%)
    1 / 72 (1.39%)
         occurrences all number
    2
    2
    Hypertension
         subjects affected / exposed
    7 / 73 (9.59%)
    1 / 72 (1.39%)
         occurrences all number
    18
    3
    Phlebitis
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Hot flashes
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    3
    General disorders and administration site conditions
    Fatigue
         subjects affected / exposed
    8 / 73 (10.96%)
    2 / 72 (2.78%)
         occurrences all number
    13
    2
    Immune system disorders
    Allergic reaction
         subjects affected / exposed
    8 / 73 (10.96%)
    0 / 72 (0.00%)
         occurrences all number
    11
    0
    Reproductive system and breast disorders
    Vaginal dryness
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Respiratory, thoracic and mediastinal disorders
    Cough
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Epistaxis
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Hypoxia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Psychiatric disorders
    Depression
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Investigations
    Neutrophil count decreased
         subjects affected / exposed
    12 / 73 (16.44%)
    23 / 72 (31.94%)
         occurrences all number
    23
    119
    Platelet count decreased
         subjects affected / exposed
    2 / 73 (2.74%)
    28 / 72 (38.89%)
         occurrences all number
    5
    66
    Ejection fraction decreased
         subjects affected / exposed
    4 / 73 (5.48%)
    2 / 72 (2.78%)
         occurrences all number
    4
    2
    Alanine aminotransferase increased
         subjects affected / exposed
    1 / 73 (1.37%)
    3 / 72 (4.17%)
         occurrences all number
    3
    5
    Aspartate aminotransferase increased
         subjects affected / exposed
    0 / 73 (0.00%)
    2 / 72 (2.78%)
         occurrences all number
    0
    3
    White blood cell decreased
         subjects affected / exposed
    1 / 73 (1.37%)
    3 / 72 (4.17%)
         occurrences all number
    2
    4
    Conjunctivitis
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    2
    GGT increased
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Weight loss
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Injury, poisoning and procedural complications
    Infusion related reaction
         subjects affected / exposed
    6 / 73 (8.22%)
    0 / 72 (0.00%)
         occurrences all number
    8
    0
    Cardiac disorders
    Palpitations
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Ventricular arrhythmia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Nervous system disorders
    Peripheral sensory neuropathy
         subjects affected / exposed
    5 / 73 (6.85%)
    0 / 72 (0.00%)
         occurrences all number
    9
    0
    Dysgeusia
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Headache
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Blood and lymphatic system disorders
    Anemia
         subjects affected / exposed
    36 / 73 (49.32%)
    35 / 72 (48.61%)
         occurrences all number
    115
    120
    Gastrointestinal disorders
    Nausea
         subjects affected / exposed
    19 / 73 (26.03%)
    16 / 72 (22.22%)
         occurrences all number
    39
    24
    Diarrhea
         subjects affected / exposed
    45 / 73 (61.64%)
    47 / 72 (65.28%)
         occurrences all number
    125
    142
    Abdominal pain
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Mucositis oral
         subjects affected / exposed
    1 / 73 (1.37%)
    4 / 72 (5.56%)
         occurrences all number
    1
    6
    Stomach pain
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Anal fissure
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Anal mucositis
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Constipation
         subjects affected / exposed
    0 / 73 (0.00%)
    2 / 72 (2.78%)
         occurrences all number
    0
    4
    Vomiting
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1
    Hepatobiliary disorders
    Hepatobiliary disorder
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    4
    0
    Skin and subcutaneous tissue disorders
    Skin and cutaneous disorders
         subjects affected / exposed
    30 / 73 (41.10%)
    22 / 72 (30.56%)
         occurrences all number
    75
    57
    Alopecia
         subjects affected / exposed
    3 / 73 (4.11%)
    1 / 72 (1.39%)
         occurrences all number
    7
    1
    Musculoskeletal and connective tissue disorders
    Myalgia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Infections and infestations
    Infections
         subjects affected / exposed
    18 / 73 (24.66%)
    14 / 72 (19.44%)
         occurrences all number
    26
    23
    Metabolism and nutrition disorders
    Hypoalbuminemia
         subjects affected / exposed
    1 / 73 (1.37%)
    0 / 72 (0.00%)
         occurrences all number
    1
    0
    Hypokalemia
         subjects affected / exposed
    0 / 73 (0.00%)
    1 / 72 (1.39%)
         occurrences all number
    0
    1

    More information

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    Substantial protocol amendments (globally)

    Were there any global substantial amendments to the protocol? Yes
    Date
    Amendment
    18 Feb 2020
    Given the important benefit brought by CDK4/6 inhibitors that has been confirmed in metastatic setting and which is expected in earlier stages, as suggested for example by first results of the CORALEEN study (Lancet Oncol 2020), the protocol has been updated to relax the eligibility criteria, now expanded from elderly (aged 65) to postmenopausal patients. This will help accelerating the accrual to yield sooner relevant and important data highly expected. In addition, the safety information for palbociclib has been updated based on the latest version of the SmPC (dated 19 December 2019) to account for the new safety risk of interstitial lung disease (ILD). ILD and pneumonitis have been added to the list of targeted adverse events.

    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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    The status and protocol content of GB trials is no longer updated since 1 January 2021. For the UK, as of 31 January 2021, EU Law applies only to the territory of Northern Ireland (NI) to the extent foreseen in the Protocol on Ireland/NI. Legal notice
    As of 31 January 2023, all EU/EEA initial clinical trial applications must be submitted through CTIS . Updated EudraCT trials information and information on PIP/Art 46 trials conducted exclusively in third countries continues to be submitted through EudraCT and published on this website.

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