Clinical Trials Register

Summary
EudraCT Number:	2021-000603-21
Sponsor's Protocol Code Number:	D967RC00001
National Competent Authority:	Spain - AEMPS
Clinical Trial Type:	EEA CTA
Trial Status:	Ongoing
Date on which this record was first entered in the EudraCT database:	2021-10-20
Trial results

Index
A. PROTOCOL INFORMATION
B. SPONSOR INFORMATION
C. APPLICANT IDENTIFICATION
D. IMP IDENTIFICATION
D.8 INFORMATION ON PLACEBO
E. GENERAL INFORMATION ON THE TRIAL
F. POPULATION OF TRIAL SUBJECTS
G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
P. END OF TRIAL

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A. Protocol Information

A.1

Member State Concerned

Spain - AEMPS

A.2

EudraCT number

2021-000603-21

A.3

Full title of the trial

A Phase 3 Open-label Trial of Neoadjuvant Trastuzumab Deruxtecan (T-DXd) Monotherapy or T-DXd followed by THP Compared to ddAC-THP in Participants with High-risk HER2-positive Early-stage Breast Cancer (DESTINY-Breast11)

Estudio Fase 3 Abierto de Neoadyuvancia con Trastuzumab Deruxtecan (T-DXd) en monoterapia o T-DXd seguido de THP comparado con ddAC-THP en pacientes con cáncer de mama en estadio temprano HER2-positivo de alto riesgo (DESTINY-Breast 11)

A.3.1

Title of the trial for lay people, in easily understood, i.e. non-technical, language

DESTINY-Breast11 will compare trastuzumab deruxtecan (T-DXd) alone or in sequence with other medications, known as THP, with standard of care treatment (ddAC-THP) and determine its safety and efficacy in patients with HER2-positive early breast cancer.

DESTINY-Breast 11 comparará trastuzumab deruxtecan (T-DXd) solo o seguido de otras medicaciones, conocidas como THP, con el tratamiento estándar (ddAC-THP) y determinará su seguridad y eficacia en pacientes con cáncer de mama incipiente con HER2 positivo.

A.3.2

Name or abbreviated title of the trial where available

DESTINY-Breast11

A.4.1

Sponsor's protocol code number

D967RC00001

A.7

Trial is part of a Paediatric Investigation Plan

A.8

EMA Decision number of Paediatric Investigation Plan

B. Sponsor Information
B.Sponsor: 1
B.1.1	Name of Sponsor	AstraZeneca AB
B.1.3.4	Country	Sweden
B.3.1 and B.3.2	Status of the sponsor	Commercial
B.4 Source(s) of Monetary or Material Support for the clinical trial:
B.4.1	Name of organisation providing support	AstraZeneca AB
B.4.2	Country	Sweden
B.5 Contact point designated by the sponsor for further information on the trial
B.5.1	Name of organisation	AstraZeneca Farmacéutica Spain, S.A.
B.5.2	Functional name of contact point	Unidad de Investigación Clínica
B.5.3	Address:
B.5.3.1	Street Address	C/ Serrano Galvache, 56; Parque Norte, Edificio Álamo
B.5.3.2	Town/ city	Madrid
B.5.3.3	Post code	28033
B.5.3.4	Country	Spain
B.5.4	Telephone number	+34900200444
B.5.6	E-mail	informacionEECC-Spain@astrazeneca.com

D. IMP Identification
D.IMP: 1
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	No
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Trastuzumab deruxtecan
D.3.2	Product code	DS8201a
D.3.4	Pharmaceutical form	Powder for concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab deruxtecan
D.3.9.1	CAS number	1599440-13-7
D.3.9.2	Current sponsor code	DS-8201a
D.3.9.3	Other descriptive name	T-DXd
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	100
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	Yes
D.3.11.13.1	Other medicinal product type	Antibody drug conjugate
D.IMP: 2
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Bentadax
D.2.1.1.2	Name of the Marketing Authorisation holder	Bendalis GmbH
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Paclitaxel
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Paclitaxel
D.3.9.1	CAS number	33069-62-4
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	6
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 3
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	perjeta
D.2.1.1.2	Name of the Marketing Authorisation holder	Roche Pharma (Schweiz) AG, Basel
D.2.1.2	Country which granted the Marketing Authorisation	Switzerland
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Pertuzumab
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Pertuzumab
D.3.9.1	CAS number	380610-27-5
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 4
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Herzuma
D.2.1.1.2	Name of the Marketing Authorisation holder	Celltrion Healthcare Hungary Kft.
D.2.1.2	Country which granted the Marketing Authorisation	European Union
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Trastuzumab
D.3.4	Pharmaceutical form	Powder for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	150
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 5
D.1.2 and D.1.3	IMP Role	Comparator
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Doxorubicin Teva 2mg/ml Concentration for solution for infusion
D.2.1.1.2	Name of the Marketing Authorisation holder	Teva GmbH
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Doxorubicin
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Doxorubicin
D.3.9.1	CAS number	23214-92-8
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	2
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 6
D.1.2 and D.1.3	IMP Role	Comparator
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Endoxan
D.2.1.1.2	Name of the Marketing Authorisation holder	Baxter Oncology
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Cyclophosphamide
D.3.4	Pharmaceutical form	Powder for solution for injection
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Cyclophosphamide
D.3.9.1	CAS number	50-18-0
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	500
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 7
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	perjeta
D.2.1.1.2	Name of the Marketing Authorisation holder	Roche Registration GmbH
D.2.1.2	Country which granted the Marketing Authorisation	European Union
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Pertuzumab
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Pertuzumab
D.3.9.1	CAS number	380610-27-5
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 8
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Bentadax
D.2.1.1.2	Name of the Marketing Authorisation holder	Bendalis GmbH
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Paclitaxel
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Paclitaxel
D.3.9.1	CAS number	33069-62-4
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	6
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 9
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Paclitaxel 6 mg/ml Concentrate for Solution for Infusion
D.2.1.1.2	Name of the Marketing Authorisation holder	Accord Healthcare Limited
D.2.1.2	Country which granted the Marketing Authorisation	United Kingdom
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Paclitaxel
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Paclitaxel
D.3.9.1	CAS number	33069-62-4
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	6
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 10
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Paclitaxel Hospira 6mg/ml Concentrate for Solution for Infusion
D.2.1.1.2	Name of the Marketing Authorisation holder	HOSPIRA PRODUCTOS FARMACÉUTICOS Y HOSPITALARIOS S.L
D.2.1.2	Country which granted the Marketing Authorisation	Spain
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Paclitaxel
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Paclitaxel
D.3.9.1	CAS number	33069-62-4
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	6
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 11
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Paclitaxel Amneal 6mg/ml Concentrate for Solution for Infusion
D.2.1.1.2	Name of the Marketing Authorisation holder	Amneal Pharma Europe Limited
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Paclitaxel
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Paclitaxel
D.3.9.1	CAS number	33069-62-4
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	6
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 12
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Ontruzant
D.2.1.1.2	Name of the Marketing Authorisation holder	Samsung Bioepis NL B.V.
D.2.1.2	Country which granted the Marketing Authorisation	European Union
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Trastuzumab
D.3.4	Pharmaceutical form	Powder for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	150
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 13
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Trazimera
D.2.1.1.2	Name of the Marketing Authorisation holder	Pfizer Europe MA EEIG
D.2.1.2	Country which granted the Marketing Authorisation	European Union
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Trastuzumab
D.3.4	Pharmaceutical form	Powder for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	150
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 14
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Kanjinti
D.2.1.1.2	Name of the Marketing Authorisation holder	Amgen Europe B.V
D.2.1.2	Country which granted the Marketing Authorisation	European Union
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Trastuzumab
D.3.4	Pharmaceutical form	Powder for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	150
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	trastuzumab
D.3.9.1	CAS number	180288-69-1
D.3.10	Strength
D.3.10.1	Concentration unit	mg milligram(s)
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	420
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 15
D.1.2 and D.1.3	IMP Role	Comparator
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Doxorubicin Hydrochloride Bendalis 2mg/ml Solution for Injection
D.2.1.1.2	Name of the Marketing Authorisation holder	Bendalis GmbH
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Doxorubicin
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Doxorubicin
D.3.9.1	CAS number	23214-92-8
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	2
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 16
D.1.2 and D.1.3	IMP Role	Comparator
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	Yes
D.2.1.1.1	Trade name	Doxorubicin Hydrochloride (Adrimedac) 2mg/ml Solution for Infusion
D.2.1.1.2	Name of the Marketing Authorisation holder	Medac GmbH
D.2.1.2	Country which granted the Marketing Authorisation	Germany
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	No
D.2.5.1	Orphan drug designation number
D.3 Description of the IMP
D.3.1	Product name	Doxorubicin
D.3.4	Pharmaceutical form	Concentrate for solution for infusion
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Intravenous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Doxorubicin
D.3.9.1	CAS number	23214-92-8
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	2
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	Yes
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	No
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	No
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No

D.8 Information on Placebo

E. General Information on the Trial

E.1 Medical condition or disease under investigation

E.1.1

Medical condition(s) being investigated

Early stage HER2-positive breast cancer (T stage >= T3, lymph node positive, or inflammatory)

Cáncer de mama incipiente con sobreexpresión de HER2 (estadio T ≥ T3, ganglios linfáticos afectados o cáncer inflamatorio).

E.1.1.1

Medical condition in easily understood language

Early breast cancer

Cáncer de mama incipiente

E.1.1.2

Therapeutic area

Diseases [C] - Cancer [C04]

MedDRA Classification

E.1.2 Medical condition or disease under investigation

E.1.2	Version	21.0
E.1.2	Level	LLT
E.1.2	Classification code	10025541
E.1.2	Term	Malignant breast neoplasm
E.1.2	System Organ Class	100000004864

E.1.3

Condition being studied is a rare disease

E.2 Objective of the trial

E.2.1

Main objective of the trial

This is a Phase 3, open-label, three-arm study to determine the safety and efficacy of T-DXd monotherapy or T-DXd followed by THP as neoadjuvant treatment compared to standard of care (ddAC-THP) in participants with locally advanced or inflammatory HER2-positive early breast cancer.

The target population of interest in this study is participants with high-risk HER2-positive early breast cancer. Participants will be randomized in a 1:1:1 ratio to one of the following intervention groups: T DXd monotherapy (Arm A), T-DXd followed by THP (Arm B), or ddAC-THP (Arm C).

The primary objective is to demonstrate the superiority of neoadjuvant T-DXd alone or in sequence with THP relative to ddAC-THP by assessment of pCR (pathological complete response, ypT0/Tis ypN0) using central evaluation in participants with HER2-positive early breast cancer.

Ensayo abierto de fase III de brazos para determinar la seguridad y eficacia de T-DXd en monoterapia o T-DXd seguido de THP como tratamiento neoadyuvante comparado con la medicación estándar (ddAC-THP) en participantes con cáncer de mama localmente avanzado o con cáncer de mama incipiente con sobreexpresión de HER2 inflamatorio.

El grupo de población de interés en este estudio es el de los participantes con cáncer de mama incipiente con alto riesgo HER2-positivo. Los participantes serán asignados al azar en una proporción 1:1:1 a uno de los siguientes grupos de intervención: T-DXd en monoterapia (Grupo A), T-DXd seguido de THP (Grupo B) o ddAC-THP (Grupo C).

E.2.2

Secondary objectives of the trial

To assess the effectiveness of neoadjuvant T-DXd alone or in sequence with THP relative to ddAC-THP by assessment of a (i) secondary definition of pCR (ypT0/Tis ypN0) using central evaluation, (ii) 3-year EFS (event-free survival), (iii) 3-year IDFS (invasive-disease free survival), and (iv) OS (overall survival). Data will also be collected to demonstrate the tolerability, safety, immunogenicity and PK of the investigational product.

Evaluar la efectividad de la neoadyuvancia de T-DXd solo o de manera secuencial con THP con respecto a ddAC-THP mediante la evaluación de una (i) definición secundaria de RCp (ypT0/Tis ypN0) usando una evaluación central, (ii) SSA(supervivencia sin acontecimientos) a 3 años, y (iv) SG (supervivencia global). Los datos serán recogidos para demostrar la tolerabilidad, seguridad, inmunogenicidad y FC del producto en investigación.

E.2.3

Trial contains a sub-study

E.3

Principal inclusion criteria

Key Inclusion Criteria:
- Patients must be at least 18 years of age.
- Histologically documented HER2-positive EBC participants with:
(a) Locally assessed HER2-positive (IHC 3+ or ISH+) according to ASCO-CAP guidelines and prospectively centrally confirmed as HER2 positive based on a tumour sample

(b) Unifocal and multifocal tumours (> 1 tumour confined to the same quadrant as the primary tumour) must have 1 focus sampled and centrally confirmed as HER2 positive

(c) Multi-centric tumours (multiple tumours involving > 1 quadrant of the breast) must have 1 lesion from each involved quadrant sampled and centrally confirmed as HER2 positive. All quadrants tested must be centrally confirmed as HER2 positive

(d) Tumours documented as HR-positive (either ER and/or PgR positive [ER or PgR ≥ 1%]) or HR-negative (ER and PgR negative) by local assessment per ASCO-CAP guidelines (Allison et al 2020)

(e) Clinical stage at presentation (based on mammogram or breast MRI assessment): T0-4 (inclusive of inflammatory breast cancer), N1-3, M0 or ≥ T3, N0, M0 as determined by the AJCC staging system, 8th edition (Hortobagyi et al 2017)

(f) Pathologic confirmation of nodal involvement with malignancy as determined by fine-needle aspiration or core-needle biopsy, when applicable.

- FFPE tissue block (2 cores) or 20 freshly-cut, serial tumor slides for HER2 assessment by central lab. If blocks are incomplete or fewer than 20 slides are available, participants may be eligible following discussion with the AstraZeneca Study Physician
- ECOG performance status of 0 or 1 at randomization
- Adequate organ and bone marrow function
- LVEF ≥ 50% within 28 days before randomization

Criterios de inclusión claves:
- Participantes deben tener al menos 18 años.
- Participantes con cáncer de mama incipiente con sobreexpresión de HER2 documentados histológicamente con:
(a) Sobreexpresión de HER2 evaluada localmente (IHC 3+ o ISH+) de acuerdo con las guías de ASCO-CAP y confirmada prospectiva y centralmente como HER2 positivo

(b) Los tumores unifocales y multifocales (> 1 tumor confinado en el mismo cuadrante que el tumor primario) deben tener 1 foco analizado y confirmado centralmente como HER2 positivo

(c) Los tumores multicéntricos (tumores múltiples que involucran > 1 cuadrante de la mama) deben tener 1 lesión de cada cuadrante involucrado analizada y confirmada centralmente como HER2 positivo. Todos los cuadrantes analizados deben confirmarse centralmente como HER2 positivo

(d) Tumores documentados como HR positivos (ya sea ER y/o PgR positivo [ER o PgR ≥ 1 %]) o HR negativos (ER y PgR negativos) mediante evaluación local según las pautas de ASCO-CAP (Allison et al., 2020).

(e) Estadio clínico en el momento de la presentación (basado en mamografía o evaluación de RM de la mama): T0-4 (incluido el cáncer de mama inflamatorio), N1-3, M0 o ≥ T3, N0, M0 determinado por el sistema de estadificación de AJCC, 8.ª edición (Hortobagyi et al 2017).

(f) Confirmación patológica de afectación ganglionar con neoplasia maligna determinada por aspiración con aguja fina o biopsia con aguja gruesa, cuando corresponda.

- Bloque de tejido tumoral FFPE (2 núcleos) o 20 laminillas, adecuada disponible para la evaluación de HER2 por parte del laboratorio central. Si el bloque está incompleto o menos de 20 laminillas, los participantes podrán ser elegibles tras discusión con el Médico del estudio de AstraZeneca.
- Estado funcional ECOG de 0 o 1 en el momento de la aleatorización.
- Función adecuada de órganos y médula ósea.
- FEVI ≥ 50 % en los 28 días anteriores a la aleatorización.

E.4

Principal exclusion criteria

Key Exclusion Criteria:
- Prior history of invasive breast cancer
- Any primary malignancy within 3 years, except adequately resected non-melanoma skin cancer, or curatively treated in situ disease
- History of DCIS, except for participants treated with mastectomy only > 5 years prior to current diagnosis
- Prior sentinel lymph node biopsy or axillary lymph node dissection before initiation of neoadjuvant treatment
- Prior systemic therapy for the treatment of breast cancer
- Previous treatment with anthracyclines, cyclophosphamide or taxanes for any malignancy; cyclophosphamide allowed for non-cancer treatment if last dose > 6 months
- Ineligible for any medication in the control Arm C
- Any concurrent anticancer treatment
- History of non-infectious ILD/pneumonitis that required steroids, has current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at screening
- Lung-specific intercurrent clinically significant illnesses including, but not limited to, any pulmonary disorder
- Investigator judgement of 1 or more of the following:
(a) Mean resting corrected QTcF interval of >470 ms (females) or >450 ms (males)

(b) History of QT prolongation associated with other medications that required discontinuation of that medication or any medication known to prolong QT interval and cause TdP.

(c) Congenital long QT syndrome, family history of long QT syndrome or unexplained death under 40 years in first degree relatives

- History of arrhythmia, symptomatic or uncontrolled atrial fibrillation or asymptomatic sustained ventricular tachycardia

Criterios de inclusión claves:
- Antecedentes de cáncer de mama invasivo.
- Cualquier neoplasia maligna primaria en los últimos 3 años, excepto cáncer de piel no melanoma resecado adecuadamente o enfermedad in situ tratada con intención curativa.
- Antecedentes de CDIS, excepto para participantes tratadas con mastectomía únicamente > 5 años antes del diagnóstico actual.
- Biopsia de ganglio linfático centinela o disección de ganglio linfático axilar antes del inicio del tratamiento neoadyuvante.
- Tratamiento sistémico previo para el cáncer de mama.
- Tratamiento previo con antraciclinas, ciclofosfamida o taxanos para cualquier neoplasia maligna. Se permite el tratamiento con ciclofosfamida para afecciones no cancerosas si la última dosis se recibió > 6 meses.
- No apto para cualquier medicamento del brazo C
- Cualquier tratamiento simultáneo contra el cáncer
- Antecedentes de EPI/neumonitis (no infecciosa) que requirieron esteroides, EPI/neumonitis actual o cuando la sospecha de EPI/neumonitis no puede descartarse mediante ensayos de imagen en el momento de la selección
- Enfermedades pulmonares intercurrentes clínicamente significativas que incluyen, entre otras, cualquier trastorno pulmonar
- Juicio del investigador de 1 o más de los siguientes:
(a) Intervalo QTcF corregido en reposo medio > 470 ms (mujeres) o > 450 ms (hombres)

(b) Antecedentes de prolongación del intervalo QT asociado con otros medicamentos que requirieron la interrupción de dicha medicación, o cualquier medicamento concomitante actual conocido por prolongar el intervalo QT y causar TdP.

(c) Síndrome de QT largo congénito, antecedentes familiares de síndrome de QT largo o muerte súbita inexplicable en menores de 40 años en familiares de primer grado.

- Antecedentes de arritmia, sintomática o fibrilación auricular incontrolada o taquicardia ventricular sostenida asintomática

E.5 End points

E.5.1

Primary end point(s)

pCR (ypT0/Tis ypN0): Rate of pCR is defined as the proportion of participants who have no evidence by H&E staining of residual invasive disease in the complete resected breast specimen and all sampled regional lymph nodes (ypT0/Tis ypN0) by central evaluation following completion of neoadjuvant therapy.

RCp (ypT0/Tis ypN0): La tasa de RCp se define como la proporción de participantes que no tienen indicios de enfermedad invasiva residual mediante tinción con HE en la muestra de mama resecada completa y en todos los ganglios linfáticos regionales analizados (ypT0/Tis ypN0) mediante evaluación central después de completar el tratamiento neoadyuvante.

E.5.1.1

Timepoint(s) of evaluation of this end point

Patients should undergo surgery no later than 6 weeks following administration of the last cycle of the randomized treatment. Surgical specimens will be sent for central assessment of pCR.

Los pacientes deben someterse a una cirugía no mas tarde the 6 semanas después de la administración del último ciclo del tratamiento en el que se le aleatorizó. Las muestras de la cirugía serán mandadas para análisis central del RCp.

E.5.2

Secondary end point(s)

1) pCR (ypT0/Tis ypN0): Rate of pCR is defined as the proportion of participants who have no evidence by H&E staining of residual invasive disease in the complete resected breast specimen and all sampled regional lymph nodes (ypT0/Tis ypN0) by central evaluation following completion of neoadjuvant therapy.

2) EFS

3) IDFS

4) OS

5) HRQoL: Symptomatic AEs assessed by the PRO CTCAE and items from the EORTC Item Library. Overall side-effect bother measured by PGI-TT at each time point in each treatment arm. Physical function assessed by the EORTC QLQ-C30 Physical Function Scale. The measure of interest will be the proportion of participants who have maintained or improved physical functioning while on neoadjuvant treatment, as measured by EORTC QLQ-C30 at each time point in each treatment arm.

6) Safety and Tolerability: Safety and tolerability will be evaluated in terms of occurrence of AEs, SAEs and changes from baseline in vital signs, clinical laboratory results, ECGs, and ECHO/MUGA.

Heart failure: NYHA Class III and IV heart failure during the neoadjuvant treatment period (pre- and post‑surgery) and at end of study

Decreases in LVEF will be evaluated by determining the percentage of participants with decreases in LVEF of at least 10 points from baseline and to below 50% during neoadjuvant treatment period (pre- and post‑surgery).

7) PK of T-DXd: Serum concentration of T-DXd, anti-HER2 antibody, and DXd.

8) Immunogenicity for T-DXd: Number and percentage of participants who develop ADAs for T-DXd.

1) RCp (ypT0/Tis ypN0): La tasa de RCp se define como la proporción de participantes que no tienen indicios de enfermedad invasiva residual mediante tinción con HE y cáncer in situ en la muestra de mama resecada completa y en todos los ganglios linfáticos regionales analizados (ypT0 ypN0) después de completar el tratamiento neoadyuvante.

2) SSA

3) SSEI

4) SG

5) Cuestionarios de Calidad de Vida: AA sintomáticos evaluados por el PRO-CTCAE e ítems de la biblioteca de ítems de la EORTC. Molestia general por efectos secundarios medida por PGI-TT en cada punto temporal en cada grupo de tratamiento. Función física evaluada por la escala de función física QLQ-C30 de la EORTC. La medida de interés será la proporción de participantes que han mantenido o mejorado la función física durante el tratamiento neoadyuvante, medida por el QLQ-C30 de la EORTC en cada punto temporal en cada grupo de tratamiento.

6) Seguridad y tolerabilidad: La seguridad y la tolerabilidad se evaluarán en términos de aparición de AA, AAG y cambios desde el inicio en las constantes vitales, los resultados de los análisis clínicos, los ECG y los ECHO/MUGA.

La insuficiencia cardíaca se evaluará determinando el porcentaje de participantes con insuficiencia cardíaca de clase III y IV de la NYHA durante el período de tratamiento neoadyuvante (antes y después de la cirugía) y al final del ensayo.

Las disminuciones en la FEVI se evaluarán determinando el porcentaje de participantes con disminuciones en la FEVI de al menos 10 puntos desde el inicio y por debajo del 50 % durante el período de tratamiento neoadyuvante (antes y después de la cirugía).

7) Evaluar la FC de T-DXd: Concentración sérica de T-DXd, anticuerpo anti-HER2 y DXd.

8) inmunogenicidad de T-DXd: Número y porcentaje de participantes que desarrollan ADA para T-DXd.

E.5.2.1

Timepoint(s) of evaluation of this end point

1) Patients should undergo surgery no later than 6 weeks following administration of the last cycle of the randomized treatment. Surgical specimens will be sent for central assessment of pCR..

2) Time from date of randomization until disease progression precluding initial surgery, invasive disease recurrence (local, regional, distant, or contralateral), or death from any cause

3) Time from surgery until invasive disease recurrence

4) Time from randomization to death from any cause

5) Time from administration during neoadjuvant treatment until long-term follow-up

6) Until end of study

7) While on study treatment until end of study

8) Up to follow-up period

1)Los pacientes deben someterse a cirugía antes de 6 semanas tras la administración del último ciclo del tto. en el que se le aleatorizó. Las muestras de la cirugía serán mandadas para análisis central del RCp.
2)Tiempo desde la fecha de aleatorización hasta la progresión de la enfermedad que imposibilite la cirugía inicial, la recidiva de la enfermedad invasiva (local, regional, a distancia o contralateral) o la muerte por cualquier causa.
3)Tiempo desde la cirugía hasta la recidiva de la enfermedad invasiva
4)Tiempo desde la aleatorización hasta la muerte por cualquier causa
5)Tiempo desde la administración durante la neoadyuvancia hasta el seguimiento a largo plazo
6)Hasta el final del estudio
7)Durante el tto. hasta el final del estudio
8)Hasta el periodo de seguimiento

E.6 and E.7 Scope of the trial

E.6

Scope of the trial

E.6.1

Diagnosis

E.6.2

Prophylaxis

E.6.3

Therapy

Yes

E.6.4

Safety

Yes

E.6.5

Efficacy

Yes

E.6.6

Pharmacokinetic

Yes

E.6.7

Pharmacodynamic

E.6.8

Bioequivalence

E.6.9

Dose response

E.6.10

Pharmacogenetic

Yes

E.6.11

Pharmacogenomic

Yes

E.6.12

Pharmacoeconomic

E.6.13

Others

E.7

Trial type and phase

E.7.1

Human pharmacology (Phase I)

E.7.1.1

First administration to humans

E.7.1.2

Bioequivalence study

E.7.1.3

Other

E.7.1.3.1

Other trial type description

E.7.2

Therapeutic exploratory (Phase II)

E.7.3

Therapeutic confirmatory (Phase III)

Yes

E.7.4

Therapeutic use (Phase IV)

E.8 Design of the trial

E.8.1

Controlled

Yes

E.8.1.1

Randomised

Yes

E.8.1.2

Open

Yes

E.8.1.3

Single blind

E.8.1.4

Double blind

E.8.1.5

Parallel group

Yes

E.8.1.6

Cross over

E.8.1.7

Other

E.8.2

Comparator of controlled trial

E.8.2.1

Other medicinal product(s)

Yes

E.8.2.2

Placebo

E.8.2.3

Other

Yes

E.8.2.3.1

Comparator description

dAC-THP (doxorubicina y ciclofosfamida seguida de paclitaxel + trastuzumab + pertuzumab)

ddAC-THP (doxorubicin and cyclophosphamide followed by paclitaxel + trastuzumab + pertuzumab)

E.8.2.4

Number of treatment arms in the trial

E.8.3

The trial involves single site in the Member State concerned

E.8.4

The trial involves multiple sites in the Member State concerned

Yes

E.8.4.1

Number of sites anticipated in Member State concerned

E.8.5

The trial involves multiple Member States

Yes

E.8.5.1

Number of sites anticipated in the EEA

E.8.6 Trial involving sites outside the EEA

E.8.6.1

Trial being conducted both within and outside the EEA

Yes

E.8.6.2

Trial being conducted completely outside of the EEA

E.8.6.3

If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned

Brazil

Canada

China

India

Japan

Korea, Republic of

Peru

Philippines

Russian Federation

Saudi Arabia

Taiwan

Thailand

United States

Austria

Bulgaria

Germany

Italy

Poland

Spain

E.8.7

Trial has a data monitoring committee

Yes

E.8.8

Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial

Completing the last expected visit/contact of the last patient undergoing the study (LSLV)

Una vez completada la última visita/contacto esperada/o del último paciente sometido al estudio (LSLV)

E.8.9 Initial estimate of the duration of the trial

E.8.9.1

In the Member State concerned years

E.8.9.1

In the Member State concerned months

E.8.9.1

In the Member State concerned days

E.8.9.2

In all countries concerned by the trial years

E.8.9.2

In all countries concerned by the trial months

E.8.9.2

In all countries concerned by the trial days

F. Population of Trial Subjects

F.1 Age Range

F.1.1

Trial has subjects under 18

F.1.1.1

In Utero

F.1.1.2

Preterm newborn infants (up to gestational age < 37 weeks)

F.1.1.3

Newborns (0-27 days)

F.1.1.4

Infants and toddlers (28 days-23 months)

F.1.1.5

Children (2-11years)

F.1.1.6

Adolescents (12-17 years)

F.1.2

Adults (18-64 years)

Yes

F.1.2.1

Number of subjects for this age range:

530

F.1.3

Elderly (>=65 years)

Yes

F.1.3.1

Number of subjects for this age range:

F.2 Gender

F.2.1

Female

Yes

F.2.2

Male

Yes

F.3 Group of trial subjects

F.3.1

Healthy volunteers

F.3.2

Patients

Yes

F.3.3

Specific vulnerable populations

Yes

F.3.3.1

Women of childbearing potential not using contraception

F.3.3.2

Women of child-bearing potential using contraception

Yes

F.3.3.3

Pregnant women

F.3.3.4

Nursing women

F.3.3.5

Emergency situation

F.3.3.6

Subjects incapable of giving consent personally

Yes

F.3.3.6.1

Details of subjects incapable of giving consent

A legally accepted representative can provide consent if the subject is not able

Un representante legalmente aceptado puede proporcionar el consentimiento si el sujeto no está capacitado.

F.3.3.7

Others

F.4 Planned number of subjects to be included

F.4.1

In the member state

F.4.2

For a multinational trial

F.4.2.1

In the EEA

175

F.4.2.2

In the whole clinical trial

624

F.5

Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)

Long-term/Survival F/U visits will be performed until death, withdrawal of consent, or study closure, whichever occurs first.

No intervention is planned after the end of the study.

Se podrán realizar visitas de seguimiento/a largo plazo hasta la muerte, retirada del consentimiento, o cierre del estudio, según lo que ocurra primero.

No se planifica la intervención tras el final del estudio.

G. Investigator Networks to be involved in the Trial

N. Review by the Competent Authority or Ethics Committee in the country concerned

Competent Authority Decision

Authorised

Date of Competent Authority Decision

2022-02-11

Ethics Committee Opinion of the trial application

Favourable

Ethics Committee Opinion: Reason(s) for unfavourable opinion

Date of Ethics Committee Opinion

2021-12-14

P. End of Trial
P.	End of Trial Status	Ongoing

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