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← Enhertu: unresectable metastatic Breast cancer with HER2 Positive, HER2 positive (first-line)

NCT01772472 · STUDY IN CONTEXT

A Study of Trastuzumab Emtansine Versus Trastuzumab as Adjuvant Therapy in Patients With HER2-Positive Breast Cancer Who Have Residual Tumor in the Breast or Axillary Lymph Nodes F

Draft scope assessment: unclear. Attached because the study's own record names HER2 and names HER2. The study was not selected for this indication by its sponsor, and its eligibility has not been reconciled against this page in full. Found because this study's registry identifier is printed in an FDA approval notice, an FDA product label or an NCI summary held by this site. The citing document and the exact position of the identifier inside it are recorded. Being cited is not a statement that the study supports this treatment.

Read the full study record and all posted results →

Linked outcomes

Measures are not ranked. Open each original source section for treatment groups, denominators, units and results.

exploratory · POSTED

IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 7-year IDFS rate in ITT population was estimated using KM method and the percentage of participants who were event-free 7 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

exploratory · POSTED

IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 8-year IDFS rate in ITT population was estimated using KM method and the percentage of participants who were event-free 8 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

primary · POSTED

IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 3-year IDFS rate in ITT population was estimated using Kaplan Meier (KM) method and the percentage of participants who were event-free 3 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

secondary · POSTED

IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and carcinoma in situ \[CIS\] of any site). IDFS event was defined as outlined in the description for IDFS rate outcome measure (OM) number 1. 3-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 3 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

secondary · POSTED

IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and CIS of any site). IDFS event was defined as outlined in the description for IDFS rate OM number 1. 7-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 7 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

secondary · POSTED

IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and CIS of any site). IDFS event was defined as outlined in the description for IDFS rate OM number 1. 8-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 8 years after randomization was estimated.

ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.

→

Reported safety

Serious events are not the same as severe events. Compare the original safety groups and their at-risk populations.

Open the study safety table →

Quality of life and patient-reported measures

EORTC QLQ · Change From Baseline in European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire - Core 30 (QLQ-C30)

Score direction: Not stated by the study. Direction is never inferred from an instrument name.

release id
clinical-indications-draft-1
disease state id
ds-breast-cancer-enhertu-251d081e
nct id
NCT01772472
qol key
qol-0020
source section id
NCT01772472-om-0020
source outcome index
20
instrument
EORTC QLQ
instrument basis
matched 'eortc' in the study's own wording
scale title
Change From Baseline in European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire - Core 30 (QLQ-C30)
measure definition
The EORTC QLQ-C30 consists of 30 questions which assess five functional domains (physical, role, cognitive, emotional, and social), a global health status/quality of life (GHS/QoL) scale, three symptom scales (fatigue, pain, nausea, and vomiting), five single items (dyspnea, appetite loss, sleep disturbance, constipation, and diarrhea), and a perceived financial impact of the disease item. Most questions used a 4-point scale (1= Not at all to 4 = Very much; 2 questions used a 7-point scale \[1 = very poor to 7 = Excellent\]). Obtained scores are linearly transformed to a score range of 0-100, whereby higher scores indicate greater functioning, greater quality of life, or a greater degree of symptoms. A positive change from baseline indicates improvement.
time frame
Baseline, Cycles 5 &11, Follow-up (FU) Month 6, FU Month 12 (1 cycle = 21 days)
analysis role
secondary
reporting status
POSTED
higher is better
Source null
direction quote
Source null
population note
ITT population included all participants who were randomized to the study regardless of whether they received any study treatment. Overall number analyzed is the number of participants with data available for analysis. Number analyzed per timepoint are unique number of participants out of all the assessed participants with data available for analysis at the specified timepoint. Different participants may have contributed data for each timepoint.
curation status
draft
reviewed by
Source null
reviewed at
Source null
created at
2026-09-10T00:00:00Z
Open the exact result →
EORTC QLQ · Change From Baseline in EORTC Quality of Life Questionnaire - Breast Cancer (QLQ-BR23)

Score direction: Not stated by the study. Direction is never inferred from an instrument name.

release id
clinical-indications-draft-1
disease state id
ds-breast-cancer-enhertu-251d081e
nct id
NCT01772472
qol key
qol-0021
source section id
NCT01772472-om-0021
source outcome index
21
instrument
EORTC QLQ
instrument basis
matched 'eortc' in the study's own wording
scale title
Change From Baseline in EORTC Quality of Life Questionnaire - Breast Cancer (QLQ-BR23)
measure definition
EORTC-QLQ-BR23 is a 23-item breast cancer-specific companion module to the EORTC-QLQ-C30 and consists of four functional scales (body image, sexual enjoyment, sexual functioning, future perspective \[FP\]) and four symptom scales (systemic side effects \[SE\], upset by hair loss, arm symptoms, breast symptoms). Questions used 4-point scale (1=not at all, 2=a little, 3=quite a bit, 4=very much). Obtained scores are linearly transformed to a score range of 0-100. High score for functional scale indicated high/better level of functioning/healthy functioning. Higher scores for symptom scales represent higher levels of symptoms/problems. For functional scales, positive change from baseline indicated deterioration in QOL and negative change from baseline indicated an improvement in QOL. For symptom scales, positive change from baseline indicated an improvement in QOL and negative change from baseline indicated a deterioration in QOL.
time frame
Baseline, Cycles 5 &11, Follow-up (FU) Month 6, FU Month 12 (1 cycle = 21 days)
analysis role
secondary
reporting status
POSTED
higher is better
Source null
direction quote
Source null
population note
ITT population included all participants who were randomized to the study regardless of whether they received any study treatment. Overall number analyzed is the number of participants with data available for analysis. Number analyzed per timepoint are unique number of participants out of all the assessed participants with data available for analysis at the specified timepoint. Different participants may have contributed data for each timepoint.
curation status
draft
reviewed by
Source null
reviewed at
Source null
created at
2026-09-10T00:00:00Z
Open the exact result →
Full draft applicability and source-link record
trial
release id
clinical-indications-draft-1
disease state id
ds-breast-cancer-enhertu-251d081e
nct id
NCT01772472
trial label
A Study of Trastuzumab Emtansine Versus Trastuzumab as Adjuvant Therapy in Patients With HER2-Positive Breast Cancer Who Have Residual Tumor in the Breast or Axillary Lymph Nodes F
applicability
unclear
applicability note
Attached because the study's own record names HER2 and names HER2. The study was not selected for this indication by its sponsor, and its eligibility has not been reconciled against this page in full.
curation status
draft
reviewed by
Source null
reviewed at
Source null
created at
2026-09-10T00:00:00Z
provenance class
regulator-cited
discovery note
Found because this study's registry identifier is printed in an FDA approval notice, an FDA product label or an NCI summary held by this site. The citing document and the exact position of the identifier inside it are recorded. Being cited is not a statement that the study supports this treatment.
outcome Count
6
harms Count
2
qol Count
2
outcomes
  1. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0001
    source section id
    NCT01772472-om-0001
    source outcome index
    1
    endpoint
    IDFS Rate at 7 Years
    endpoint definition
    IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 7-year IDFS rate in ITT population was estimated using KM method and the percentage of participants who were event-free 7 years after randomization was estimated.
    time origin
    At Year 7
    analysis role
    exploratory
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  2. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0002
    source section id
    NCT01772472-om-0002
    source outcome index
    2
    endpoint
    IDFS Rate at 8 Years
    endpoint definition
    IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 8-year IDFS rate in ITT population was estimated using KM method and the percentage of participants who were event-free 8 years after randomization was estimated.
    time origin
    At Year 8
    analysis role
    exploratory
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  3. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0000
    source section id
    NCT01772472-om-0000
    source outcome index
    0
    endpoint
    Invasive Disease-free Survival (IDFS) Rate at 3 Years
    endpoint definition
    IDFS event was defined as the first occurrence of any one of the following events: ipsilateral invasive breast tumor recurrence (i.e., an invasive breast cancer involving the same breast parenchyma as the original primary lesion); ipsilateral local-regional invasive breast cancer recurrence (i.e., an invasive breast cancer in the axilla, regional lymph nodes, chest wall and/or skin of the ipsilateral breast); distant recurrence (i.e., evidence of breast cancer in any anatomic site-other than the 2 above-mentioned sites - that has either been histologically confirmed or clinically diagnosed as recurrent invasive breast cancer); contralateral invasive breast cancer; death attributable to any cause including breast cancer, non-breast cancer or unknown cause . 3-year IDFS rate in ITT population was estimated using Kaplan Meier (KM) method and the percentage of participants who were event-free 3 years after randomization was estimated.
    time origin
    At Year 3
    analysis role
    primary
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  4. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0003
    source section id
    NCT01772472-om-0003
    source outcome index
    3
    endpoint
    IDFS Including Second Primary Non-breast Cancer (SPNBC) Rate at 3 Years
    endpoint definition
    IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and carcinoma in situ \[CIS\] of any site). IDFS event was defined as outlined in the description for IDFS rate outcome measure (OM) number 1. 3-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 3 years after randomization was estimated.
    time origin
    At Year 3
    analysis role
    secondary
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  5. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0004
    source section id
    NCT01772472-om-0004
    source outcome index
    4
    endpoint
    IDFS Including SPNBC Rate at 7 Years
    endpoint definition
    IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and CIS of any site). IDFS event was defined as outlined in the description for IDFS rate OM number 1. 7-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 7 years after randomization was estimated.
    time origin
    At Year 7
    analysis role
    secondary
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  6. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0005
    source section id
    NCT01772472-om-0005
    source outcome index
    5
    endpoint
    IDFS Including SPNBC Rate at 8 Years
    endpoint definition
    IDFS including SPNBC was defined the same way as IDFS but including second primary non breast invasive cancer as an event (with the exception of non-melanoma skin cancers and CIS of any site). IDFS event was defined as outlined in the description for IDFS rate OM number 1. 8-year IDFS including SPNBC rate in the ITT population was estimated using KM method, and the percentage of participants who were event-free 8 years after randomization was estimated.
    time origin
    At Year 8
    analysis role
    secondary
    reporting status
    POSTED
    data cutoff
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
arms
  1. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0000
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0000#groups/OG000
  2. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0000
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0000#groups/OG001
  3. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0001
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0001#groups/OG000
  4. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0001
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0001#groups/OG001
  5. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0002
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0002#groups/OG000
  6. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0002
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0002#groups/OG001
  7. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0003
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0003#groups/OG000
  8. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0003
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0003#groups/OG001
  9. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0004
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0004#groups/OG000
  10. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0004
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0004#groups/OG001
  11. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0005
    arm key
    OG000
    arm label
    Trastuzumab
    regimen
    Participants received trastuzumab, 6 mg/kg, IV, Q3W, as a maintenance dose for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0005#groups/OG000
  12. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    outcome key
    om-0005
    arm key
    OG001
    arm label
    Trastuzumab Emtansine
    regimen
    Participants received trastuzumab emtansine, 3.6 mg/kg, IV, Q3W for 14 cycles (1 cycle = 21 days) or until disease recurrence or unacceptable toxicity which ever occurs first.
    analyzed count
    743
    analyzed unit
    Participants
    is comparator
    Source null
    source pointer
    NCT01772472-om-0005#groups/OG001
harms
  1. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    harm key
    EG000
    source section id
    NCT01772472-ae
    event group key
    EG000
    event group label
    Trastuzumab
    serious affected
    58
    serious at risk
    720
    other affected
    633
    other at risk
    720
    frequency threshold
    5
    collection period
    From signing of informed consent till the end of follow-up (up to approximately 131 months)
    event definition
    AE(s): SE Population. All-cause mortality: ITT population.1 participant randomized to trastuzumab arm was untreated, later re-randomized to T-DM1 arm \& received treatment. Another participant in trastuzumab arm received 13 cycles of trastuzumab \& 1 of T-DM1. Both these participants were included in the trastuzumab ITT population \& T-DM1 safety analysis (SA). 1 participant in T-DM1 arm received 9 cycles of trastuzumab \& included in trastuzumab SA.
    undenominated note
    Source null
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  2. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    harm key
    EG001
    source section id
    NCT01772472-ae
    event group key
    EG001
    event group label
    Trastuzumab Emtansine
    serious affected
    94
    serious at risk
    740
    other affected
    719
    other at risk
    740
    frequency threshold
    5
    collection period
    From signing of informed consent till the end of follow-up (up to approximately 131 months)
    event definition
    AE(s): SE Population. All-cause mortality: ITT population.1 participant randomized to trastuzumab arm was untreated, later re-randomized to T-DM1 arm \& received treatment. Another participant in trastuzumab arm received 13 cycles of trastuzumab \& 1 of T-DM1. Both these participants were included in the trastuzumab ITT population \& T-DM1 safety analysis (SA). 1 participant in T-DM1 arm received 9 cycles of trastuzumab \& included in trastuzumab SA.
    undenominated note
    Source null
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
quality of life
  1. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    qol key
    qol-0020
    source section id
    NCT01772472-om-0020
    source outcome index
    20
    instrument
    EORTC QLQ
    instrument basis
    matched 'eortc' in the study's own wording
    scale title
    Change From Baseline in European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire - Core 30 (QLQ-C30)
    measure definition
    The EORTC QLQ-C30 consists of 30 questions which assess five functional domains (physical, role, cognitive, emotional, and social), a global health status/quality of life (GHS/QoL) scale, three symptom scales (fatigue, pain, nausea, and vomiting), five single items (dyspnea, appetite loss, sleep disturbance, constipation, and diarrhea), and a perceived financial impact of the disease item. Most questions used a 4-point scale (1= Not at all to 4 = Very much; 2 questions used a 7-point scale \[1 = very poor to 7 = Excellent\]). Obtained scores are linearly transformed to a score range of 0-100, whereby higher scores indicate greater functioning, greater quality of life, or a greater degree of symptoms. A positive change from baseline indicates improvement.
    time frame
    Baseline, Cycles 5 &11, Follow-up (FU) Month 6, FU Month 12 (1 cycle = 21 days)
    analysis role
    secondary
    reporting status
    POSTED
    higher is better
    Source null
    direction quote
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment. Overall number analyzed is the number of participants with data available for analysis. Number analyzed per timepoint are unique number of participants out of all the assessed participants with data available for analysis at the specified timepoint. Different participants may have contributed data for each timepoint.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
  2. release id
    clinical-indications-draft-1
    disease state id
    ds-breast-cancer-enhertu-251d081e
    nct id
    NCT01772472
    qol key
    qol-0021
    source section id
    NCT01772472-om-0021
    source outcome index
    21
    instrument
    EORTC QLQ
    instrument basis
    matched 'eortc' in the study's own wording
    scale title
    Change From Baseline in EORTC Quality of Life Questionnaire - Breast Cancer (QLQ-BR23)
    measure definition
    EORTC-QLQ-BR23 is a 23-item breast cancer-specific companion module to the EORTC-QLQ-C30 and consists of four functional scales (body image, sexual enjoyment, sexual functioning, future perspective \[FP\]) and four symptom scales (systemic side effects \[SE\], upset by hair loss, arm symptoms, breast symptoms). Questions used 4-point scale (1=not at all, 2=a little, 3=quite a bit, 4=very much). Obtained scores are linearly transformed to a score range of 0-100. High score for functional scale indicated high/better level of functioning/healthy functioning. Higher scores for symptom scales represent higher levels of symptoms/problems. For functional scales, positive change from baseline indicated deterioration in QOL and negative change from baseline indicated an improvement in QOL. For symptom scales, positive change from baseline indicated an improvement in QOL and negative change from baseline indicated a deterioration in QOL.
    time frame
    Baseline, Cycles 5 &11, Follow-up (FU) Month 6, FU Month 12 (1 cycle = 21 days)
    analysis role
    secondary
    reporting status
    POSTED
    higher is better
    Source null
    direction quote
    Source null
    population note
    ITT population included all participants who were randomized to the study regardless of whether they received any study treatment. Overall number analyzed is the number of participants with data available for analysis. Number analyzed per timepoint are unique number of participants out of all the assessed participants with data available for analysis at the specified timepoint. Different participants may have contributed data for each timepoint.
    curation status
    draft
    reviewed by
    Source null
    reviewed at
    Source null
    created at
    2026-09-10T00:00:00Z
setting source links

    Preserved source evidence · Not medical advice