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A Study in Healthy Male Subjects to Investigate the Comparability of Pharmacokinetics of the Fixed-Dose Combination of Pertuzumab and Trastuzumab Administered Subcutaneously Using a Handheld Syringe or Using the On-Body Delivery System

A Randomized, Open-Label, 2-Arm, Parallel Group, Single Dose, Multi-Centre Study in Healthy Male Subjects to Investigate the Comparability of Pharmacokinetics of the Fixed-Dose Combination of Pertuzumab and Trastuzumab Administered Subcutaneously Using a Handheld Syringe or Using the On-Body Delivery System

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05275010
Enrollment
151
Registered
2022-03-11
Start date
2022-05-30
Completion date
2023-10-03
Last updated
2024-09-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Male Subjects

Brief summary

This is a randomized, open-label, 2-arm, parallel-group, single-dose, multi-center study in healthy male subjects to investigate the comparability of the pharmacokinetics of the fixed-dose combination of pertuzumab and trastuzumab administered subcutaneously using the proprietary on-body delivery system or a handheld syringe with hypodermic needle.

Interventions

DRUGFixed-Dose Combination of Pertuzumab and Trastuzumab SC (PH FDC SC)

A single dose of PH FDC SC (600 mg pertuzumab/600 mg trastuzumab) will be administered by a healthcare professional subcutaneously (SC) into the anterior thigh, using either a handheld syringe with hypodermic needle (Arm 1) or the on-body delivery system (Arm 2).

DEVICEHandheld Syringe with Hypodermic Needle

A single 10-mL dose of PH FDC SC will be administered as a subcutaneous (SC) injection using a handheld manual syringe.

DEVICEOn-Body Delivery System

A single 10-mL dose of PH FDC SC will be administered as a subcutaneous (SC) injection using the on-body delivery system (OBDS).

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 45 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy male subjects age 18-45 years at time of signing Informed Consent Form * Ability to comply with the study protocol * Agreement to remain abstinent (refrain from heterosexual intercourse) or use a condom, and agreement to refrain from donating sperm, during the treatment period and for 7 months after the dose of PH FDC SC * A body mass index (BMI) between 18 and 32 kilograms per metre squared (kg/m2), inclusive * Intact normal skin without potentially obscuring tattoos, pigmentation, or lesions in the area for intended injection on the thighs * Baseline LVEF≥55% measured by echocardiogram (ECHO) * No history of hypersensitivity or confirmed, clinically significant and clinically relevant allergic reactions, either spontaneously or following any drug administration * No history of any clinically significant and clinically relevant cardiac condition * No history of previous anticancer treatments including pertuzumab, trastuzumab, anthracyclines, or any cardiotoxic drugs * No apparent family history of clinically significant and clinically relevant hypersensitivity, allergy, and severe cardiac diseases * No contraindications from detailed medical and surgical history and physical examinations * No previous enrollment in this study protocol and no concurrent enrollment in any other study protocol

Exclusion criteria

* Positive urine test for drugs of abuse as per local standard (for alcohol abuse, positive breath test is also acceptable) * Positive test result for hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV) 1 or 2, showing: History of exposure to HBV, HCV, or HIV; or Active viral hepatitis infection (HBV or HCV) or HIV infection * Systolic blood pressure ≥140 millimetres of mercury (mmHg) or \<90 mmHg, or diastolic blood pressure \>90 mmHg or \<50 mmHg * Use of prohibited medications including non-prescription medications, nutraceuticals, nutritional supplements or any herbal remedies taken within 10 days or 5 times the elimination half-life (whichever is longer) prior to randomization into the study * Concomitant subcutaneous, intravenous, or any parenteral drugs within 90 days prior to screening * Participation in an investigational drug or device study within 90 days or five times the elimination half-life (whichever is longer) prior to screening * Donation of blood over 500 millilitres (mL) within 3 months prior to enrollment * Known severe hypersensitivity to plaster, medical adhesive tapes, or bandages * Known allergy to murine proteins, hyaluronidase, bee, or vespid venom, or any other ingredient in the formulation of rHuPH20 (Hylenex® recombinant \[hyaluronidase human injection\]) or any other ingredients and excipients in the formulation of PH FDC SC * Clinically significant abnormalities in laboratory test results (including hepatic and renal panels, CBC, chemistry panel, and urinalysis) * Clinically relevant electrocardiogram abnormalities at screening or Day -1 * History of any cardiac condition * Lower extremity edema or pathology (e.g., cellulitis, lymphatic disorder or prior surgery, pre-existing pain syndrome, previous lymph node dissection etc.) that could interfere with any protocol-specified outcome assessment * Any history of clinically significant and clinically relevant allergies, oncologic, psychiatric, gastrointestinal, renal, hepatic, cardiovascular or pulmonary disease * Concomitant disease or condition that could interfere with, or for which the treatment might interfere with, the conduct of the study, or that would pose an unacceptable risk to the subject in this study * Any clinically relevant history of systemic disease (e.g., malignancy, diabetes mellitus, gastrointestinal, renal, hepatic, cardiovascular, rheumatological, or pulmonary disease) * History of breast cancer or treatment for breast cancer * Current chronic daily treatment (continuous for \>3 months) with corticosteroids (dose ≥10 mg/day methylprednisolone), excluding inhaled corticosteroids * Receipt of intravenous antibiotics for infection within 7 days prior to enrollment into the study

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63For the analysis of AUC0-62days, participants in the Per Protocol Pharmacokinetics (PK) Analysis Population (PAP) with missing Day 63 PK pertuzumab concentration data or with a Day 63 PK sample time deviation outside a +/-120-hour window of planned sampling time were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.
Area Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63For the analysis of AUC0-62days, participants in the Per Protocol Pharmacokinetics (PK) Analysis Population (PAP) with missing Day 63 PK trastuzumab concentration data or with a Day 63 PK sample time deviation outside a +/-120-hour window of planned sampling time were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.
Maximum Serum Concentration (Cmax) of PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63For analysis of Cmax, participants from the Per Protocol PK Analysis Population (PAP) with two or more missing PK pertuzumab concentration data on any of Days 3, 5, 7, 9 or 11 were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.
Maximum Serum Concentration (Cmax) of TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63For analysis of Cmax, participants from the Per Protocol PK Analysis Population (PAP) with two or more missing PK trastuzumab concentration data on any of Days 3, 5, 7, 9 or 11 were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.

Secondary

MeasureTime frameDescription
Area Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Area Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Observed Time to Maximum Serum Concentration (Tmax) of PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Observed Time to Maximum Serum Concentration (Tmax) of TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Terminal Elimination Half-Life (t1/2) of PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Terminal Elimination Half-Life (t1/2) of TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Apparent Drug Clearance (CL/F) of PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Apparent Drug Clearance (CL/F) of TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Apparent Volume of Distribution (Vd/F) of PertuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Apparent Volume of Distribution (Vd/F) of TrastuzumabPredose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63
Summary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)From study drug dose until safety follow-up visit (up to 7 months)The adverse event (AE) severity grading scale NCI CTCAE v5.0 was used for assessing AE severity. Any AEs for which the NCI CTCAE v5.0 did not provide a grading scale, the standard four-point scale from 1 to 4 (mild, moderate, severe, life-threatening) was used. The terms severe and serious are not synonymous and are independently assessed for each AE. Multiple occurrences of AEs were counted only once per participant at the highest (worst) grade. AEs to monitor included administration-related reactions, hypersensitivity and anaphylaxis, diarrhoea, rash, cardiac dysfunction, neutropenia or febrile neutropenia, mucositis, and interstitial lung disease.
Observed Serum Concentration of Pertuzumab on Day 22Day 22
Change From Baseline Pulse Rate Over TimeBaseline, Days 2, 7, 22, and 63Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.
Change From Baseline Respiratory Rate Over TimeBaseline, Days 2, 7, 22, and 63Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.
Change From Baseline Systolic Blood Pressure Over TimeBaseline, Days 2, 7, 22, and 63Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.
Change From Baseline Diastolic Blood Pressure Over TimeBaseline, Days 2, 7, 22, and 63Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.
Number of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorAt Baseline (predose) and Post-Baseline (postdose Days 2, 7, 22, and 63)For safety monitoring purposes, the investigator was required to review, sign, and date all electrocardiogram (ECG) reports. Any morphologic waveform changes or other ECG abnormalities were documented by the investigator. Post-baseline, if all examinations were normal, then it was categorized as 'Normal'. If any abnormality was reported, then it was categorized as 'Abnormal'. 'Clinically significant' is a subset of the abnormal category.
Number of Participants With Adverse Events Based on Laboratory Test AbnormalitiesFrom Baseline until Day 63Not every laboratory abnormality qualified as an adverse event. A laboratory test result had to be reported as an adverse event if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; was clinically significant in the investigator's judgment.
Pain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScaleDay 1: pre-dose, during drug injection, after drug injection while removing the device or syringe, and 2 hours after drug injectionPain intensity scores were assessed by the participants using the Visual Analog Scale (VAS) on a line measuring between 0 mm ('no pain') and 100 mm ('unbearable pain'). The VAS was completed in both study arms to assess the level of pain experienced by the participant in relation to the injection of Phesgo. On Day 1, pain assessments were performed prior to, during, and immediately after injection of Phesgo when the needle or device was removed, and 2 hours after injection.
Number of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnairePrior to injection and after injection on Day 1Skin irritation and sensitization reactions at the site of injection caused by the adhesion of the OBDS to the skin were assessed by the study staff using the device monitoring questionnaire in the eCRF. Dermal effects were reported on a scale from 0 (no evidence or irritation) to 7 (strong reaction spreading beyond test site). Other effects were reported on a separate scale from 0 (no evidence) to 7 (small petechial eruptions or scabs).
Number of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireDay 1Participants in the Phesgo OBDS arm completed the device monitoring questionnaire the injection with the OBDS. The questionnaire assessed the following criteria: ease of device attachment, attachment during the injection, ease of device removal, and overall wearing comfort, which were each rated on a three-point scale as Good, Acceptable, or Poor.
Number of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceDay 1Details of performance and ease of use of the on-body delivery system (OBDS) were reported by site staff, using the device monitoring questionnaire in the eCRF. This included the following: Preparation of the injection site, Preparation of the OBDS, Prefilled cartridge inspection before insertion in the OBDS, Positioning and attachment of the OBDS on the anterior thigh, Drug delivery, and OBDS administration failures.
Change From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeBaseline, once between Days 20 and 35, and once between Days 56 and 63Echocardiography was used to assess left ventricular ejection fraction (LVEF) values. The screening LVEF assessment had to be performed within ≤28 days prior to randomization and the LVEF value must have been ≥55% to be eligible for the study.
Observed Serum Concentration of Trastuzumab on Day 22Day 22
Observed Serum Concentration of Pertuzumab on Day 63Day 63
Observed Serum Concentration of Trastuzumab on Day 63Day 63

Countries

Australia, New Zealand

Participant flow

Participants by arm

ArmCount
Arm 1: PH FDC SC Using a Handheld Syringe
A single dose of PH FDC SC (600 mg pertuzumab/600 mg trastuzumab) was administered by a healthcare professional subcutaneously (SC) into the participant's anterior thigh on Day 1, using a handheld syringe with hypodermic needle.
76
Arm 2: PH FDC SC Using the OBDS
A single dose of PH FDC SC (600 mg pertuzumab/600 mg trastuzumab) was administered by a healthcare professional subcutaneously (SC) into the participant's anterior thigh on Day 1, using the on-body delivery system (OBDS).
75
Total151

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up01
Overall StudyReason Not Specified41
Overall StudyWithdrawal by Subject10

Baseline characteristics

CharacteristicTotalArm 1: PH FDC SC Using a Handheld SyringeArm 2: PH FDC SC Using the OBDS
Age, Continuous29.0 Years29.0 Years29.0 Years
Ethnicity (NIH/OMB)
Hispanic or Latino
15 Participants7 Participants8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
133 Participants68 Participants65 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants1 Participants2 Participants
Number of Participants by Weight Category (>75 kg vs. ≤75 kg)
≤75 kg
41 Participants21 Participants20 Participants
Number of Participants by Weight Category (>75 kg vs. ≤75 kg)
>75 kg
110 Participants55 Participants55 Participants
Race (NIH/OMB)
American Indian or Alaska Native
3 Participants0 Participants3 Participants
Race (NIH/OMB)
Asian
28 Participants15 Participants13 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
7 Participants4 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
17 Participants10 Participants7 Participants
Race (NIH/OMB)
Unknown or Not Reported
7 Participants3 Participants4 Participants
Race (NIH/OMB)
White
89 Participants44 Participants45 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
151 Participants76 Participants75 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 720 / 74
other
Total, other adverse events
70 / 7269 / 74
serious
Total, serious adverse events
1 / 720 / 74

Outcome results

Primary

Area Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Pertuzumab

For the analysis of AUC0-62days, participants in the Per Protocol Pharmacokinetics (PK) Analysis Population (PAP) with missing Day 63 PK pertuzumab concentration data or with a Day 63 PK sample time deviation outside a +/-120-hour window of planned sampling time were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: Per Protocol PK Analysis Population for Pertuzumab AUC0-62 (PPAP1): includes all randomized participants who were treated and adhered to the pre-specified protocol criteria for general PK analysis and for pertuzumab AUC0-62 analysis specifically.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeArea Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Pertuzumab1671.2 μg*day/mLGeometric Coefficient of Variation 27.5
Arm 2: PH FDC SC Using the OBDSArea Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Pertuzumab1674.6 μg*day/mLGeometric Coefficient of Variation 23.2
90% CI: [0.93, 1.08]
Primary

Area Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Trastuzumab

For the analysis of AUC0-62days, participants in the Per Protocol Pharmacokinetics (PK) Analysis Population (PAP) with missing Day 63 PK trastuzumab concentration data or with a Day 63 PK sample time deviation outside a +/-120-hour window of planned sampling time were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: Per Protocol PK Analysis Population for Trastuzumab AUC0-62 (TPAP1): includes all randomized participants who were treated and adhered to the pre-specified protocol criteria for general PK analysis and for trastuzumab AUC0-62 analysis specifically.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeArea Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Trastuzumab1341.2 μg*day/mLGeometric Coefficient of Variation 31.4
Arm 2: PH FDC SC Using the OBDSArea Under the Time-Concentration Curve From the Start of Dosing to 63 Days (AUC0-62) for Serum Trastuzumab1347.1 μg*day/mLGeometric Coefficient of Variation 23.6
90% CI: [0.93, 1.09]
Primary

Maximum Serum Concentration (Cmax) of Pertuzumab

For analysis of Cmax, participants from the Per Protocol PK Analysis Population (PAP) with two or more missing PK pertuzumab concentration data on any of Days 3, 5, 7, 9 or 11 were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: Per Protocol PK Analysis Population for Pertuzumab Cmax (PPAP2): includes all randomized participants who were treated and adhered to the pre-specified protocol criteria for general PK analysis and for pertuzumab Cmax analysis specifically.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeMaximum Serum Concentration (Cmax) of Pertuzumab63.4 microgram per millilitre (μg/mL)Geometric Coefficient of Variation 32.2
Arm 2: PH FDC SC Using the OBDSMaximum Serum Concentration (Cmax) of Pertuzumab65.8 microgram per millilitre (μg/mL)Geometric Coefficient of Variation 24.7
90% CI: [0.96, 1.12]
Primary

Maximum Serum Concentration (Cmax) of Trastuzumab

For analysis of Cmax, participants from the Per Protocol PK Analysis Population (PAP) with two or more missing PK trastuzumab concentration data on any of Days 3, 5, 7, 9 or 11 were excluded. Participants were excluded from the PAP for the following reasons: 1. The participant violates inclusion or exclusion criteria regarding body mass index (BMI), use of prohibited medications and concomitant subcutaneous, intravenous (IV), or any parenteral drugs, participation in an investigational drug or device study, current chronic daily treatment with corticosteroids, and receipt of IV antibiotics for infection. 2. An SC injection site other than thigh is used; 3. Any participant whose injection is not successfully performed.

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: Per Protocol PK Analysis Population for Trastuzumab Cmax (TPAP2): includes all randomized participants who were treated and adhered to the pre-specified protocol criteria for general PK analysis and for trastuzumab Cmax analysis specifically.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeMaximum Serum Concentration (Cmax) of Trastuzumab59.8 microgram per millilitre (μg/mL)Geometric Coefficient of Variation 33.8
Arm 2: PH FDC SC Using the OBDSMaximum Serum Concentration (Cmax) of Trastuzumab62.0 microgram per millilitre (μg/mL)Geometric Coefficient of Variation 25.2
90% CI: [0.95, 1.13]
Secondary

Apparent Drug Clearance (CL/F) of Pertuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeApparent Drug Clearance (CL/F) of Pertuzumab347 millilitres per day (mL/day)Standard Deviation 124
Arm 2: PH FDC SC Using the OBDSApparent Drug Clearance (CL/F) of Pertuzumab361 millilitres per day (mL/day)Standard Deviation 102
Secondary

Apparent Drug Clearance (CL/F) of Trastuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeApparent Drug Clearance (CL/F) of Trastuzumab469 millilitres per day (mL/day)Standard Deviation 172
Arm 2: PH FDC SC Using the OBDSApparent Drug Clearance (CL/F) of Trastuzumab481 millilitres per day (mL/day)Standard Deviation 122
Secondary

Apparent Volume of Distribution (Vd/F) of Pertuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeApparent Volume of Distribution (Vd/F) of Pertuzumab7670 millilitres (mL)Standard Deviation 2030
Arm 2: PH FDC SC Using the OBDSApparent Volume of Distribution (Vd/F) of Pertuzumab7730 millilitres (mL)Standard Deviation 2250
Secondary

Apparent Volume of Distribution (Vd/F) of Trastuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeApparent Volume of Distribution (Vd/F) of Trastuzumab6320 millilitres (mL)Standard Deviation 2890
Arm 2: PH FDC SC Using the OBDSApparent Volume of Distribution (Vd/F) of Trastuzumab6030 millilitres (mL)Standard Deviation 1980
Secondary

Area Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Pertuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeArea Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Pertuzumab1930 μg*day/mLStandard Deviation 593
Arm 2: PH FDC SC Using the OBDSArea Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Pertuzumab1860 μg*day/mLStandard Deviation 454
Secondary

Area Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Trastuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeArea Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Trastuzumab1440 μg*day/mLStandard Deviation 453
Arm 2: PH FDC SC Using the OBDSArea Under the Time-Concentration Curve From the Start of Dosing Extrapolated to Infinity (AUC0-∞) for Serum Trastuzumab1410 μg*day/mLStandard Deviation 331
Secondary

Change From Baseline Diastolic Blood Pressure Over Time

Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.

Time frame: Baseline, Days 2, 7, 22, and 63

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 2-1.99 beats per minuteStandard Deviation 6.86
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 223.43 beats per minuteStandard Deviation 7.13
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeBaseline (BL) - Value at Visit70.50 beats per minuteStandard Deviation 7.55
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 633.96 beats per minuteStandard Deviation 7.86
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 73.04 beats per minuteStandard Deviation 6.82
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL - Minimum Value at Anytime-4.58 beats per minuteStandard Deviation 7.16
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Diastolic Blood Pressure Over TimeChange from BL - Maximum Value at Anytime8.13 beats per minuteStandard Deviation 7.11
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL - Minimum Value at Anytime-4.30 beats per minuteStandard Deviation 6.13
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL - Maximum Value at Anytime8.65 beats per minuteStandard Deviation 7.13
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeBaseline (BL) - Value at Visit70.38 beats per minuteStandard Deviation 7.2
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 2-2.12 beats per minuteStandard Deviation 6.49
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 72.62 beats per minuteStandard Deviation 7.04
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 224.16 beats per minuteStandard Deviation 7.67
Arm 2: PH FDC SC Using the OBDSChange From Baseline Diastolic Blood Pressure Over TimeChange from BL at Day 633.64 beats per minuteStandard Deviation 8.36
Secondary

Change From Baseline Left Ventricular Ejection Fraction (LVEF) Over Time

Echocardiography was used to assess left ventricular ejection fraction (LVEF) values. The screening LVEF assessment had to be performed within ≤28 days prior to randomization and the LVEF value must have been ≥55% to be eligible for the study.

Time frame: Baseline, once between Days 20 and 35, and once between Days 56 and 63

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Day 20 to 350.10 Percentage points of LVEFStandard Deviation 4.88
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Minimum Value at Anytime-2.09 Percentage points of LVEFStandard Deviation 4.39
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Day 56 to 63-0.87 Percentage points of LVEFStandard Deviation 5.04
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Maximum Value at Anytime1.32 Percentage points of LVEFStandard Deviation 5.01
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeBaseline (BL) - Value at Visit61.55 Percentage points of LVEFStandard Deviation 3.56
Arm 2: PH FDC SC Using the OBDSChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Maximum Value at Anytime1.23 Percentage points of LVEFStandard Deviation 3.7
Arm 2: PH FDC SC Using the OBDSChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeBaseline (BL) - Value at Visit60.99 Percentage points of LVEFStandard Deviation 3.82
Arm 2: PH FDC SC Using the OBDSChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Day 20 to 35-0.94 Percentage points of LVEFStandard Deviation 4.06
Arm 2: PH FDC SC Using the OBDSChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Day 56 to 63-0.20 Percentage points of LVEFStandard Deviation 4.29
Arm 2: PH FDC SC Using the OBDSChange From Baseline Left Ventricular Ejection Fraction (LVEF) Over TimeChange from BL - Minimum Value at Anytime-2.36 Percentage points of LVEFStandard Deviation 3.84
Secondary

Change From Baseline Pulse Rate Over Time

Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.

Time frame: Baseline, Days 2, 7, 22, and 63

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL at Day 71.80 beats per minuteStandard Deviation 8.63
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL at Day 632.47 beats per minuteStandard Deviation 8.64
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL at Day 27.04 beats per minuteStandard Deviation 8.51
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL - Minimum Value at Anytime-2.49 beats per minuteStandard Deviation 7.67
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL at Day 225.40 beats per minuteStandard Deviation 11.52
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeChange from BL - Maximum Value at Anytime14.79 beats per minuteStandard Deviation 15.06
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Pulse Rate Over TimeBaseline (BL) - Value at Visit58.24 beats per minuteStandard Deviation 9.3
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL - Maximum Value at Anytime13.19 beats per minuteStandard Deviation 12.09
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeBaseline (BL) - Value at Visit59.30 beats per minuteStandard Deviation 10.89
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL at Day 26.51 beats per minuteStandard Deviation 10.86
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL at Day 74.34 beats per minuteStandard Deviation 11.39
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL at Day 225.14 beats per minuteStandard Deviation 11.91
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL at Day 634.16 beats per minuteStandard Deviation 10.87
Arm 2: PH FDC SC Using the OBDSChange From Baseline Pulse Rate Over TimeChange from BL - Minimum Value at Anytime-1.78 beats per minuteStandard Deviation 9.17
Secondary

Change From Baseline Respiratory Rate Over Time

Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.

Time frame: Baseline, Days 2, 7, 22, and 63

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL at Day 70.00 breaths per minuteStandard Deviation 2.31
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL at Day 63-0.19 breaths per minuteStandard Deviation 2.3
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL at Day 2-0.22 breaths per minuteStandard Deviation 2.22
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL - Minimum Value at Anytime-1.86 breaths per minuteStandard Deviation 1.69
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL at Day 22-0.34 breaths per minuteStandard Deviation 1.68
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeChange from BL - Maximum Value at Anytime1.44 breaths per minuteStandard Deviation 1.96
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Respiratory Rate Over TimeBaseline (BL) - Value at Visit15.71 breaths per minuteStandard Deviation 1.61
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL - Maximum Value at Anytime1.93 breaths per minuteStandard Deviation 2.08
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeBaseline (BL) - Value at Visit15.50 breaths per minuteStandard Deviation 1.49
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL at Day 2-0.03 breaths per minuteStandard Deviation 2.39
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL at Day 70.04 breaths per minuteStandard Deviation 2.1
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL at Day 220.53 breaths per minuteStandard Deviation 2.04
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL at Day 630.15 breaths per minuteStandard Deviation 2.61
Arm 2: PH FDC SC Using the OBDSChange From Baseline Respiratory Rate Over TimeChange from BL - Minimum Value at Anytime-1.64 breaths per minuteStandard Deviation 2
Secondary

Change From Baseline Systolic Blood Pressure Over Time

Vital sign measurements were taken after the participant had remained resting in a semi-supine position for at least 5 minutes. The minimum and maximum values are, respectively, the smallest and largest values obtained at any point after baseline, including any repeat and unscheduled measurements.

Time frame: Baseline, Days 2, 7, 22, and 63

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 74.55 beats per minuteStandard Deviation 7.14
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 634.70 beats per minuteStandard Deviation 9.51
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 2-1.44 beats per minuteStandard Deviation 7.9
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL - Minimum Value at Anytime-4.68 beats per minuteStandard Deviation 7.97
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 223.60 beats per minuteStandard Deviation 10.76
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeChange from BL - Maximum Value at Anytime11.17 beats per minuteStandard Deviation 9.96
Arm 1: PH FDC SC Using a Handheld SyringeChange From Baseline Systolic Blood Pressure Over TimeBaseline (BL) - Value at Visit118.33 beats per minuteStandard Deviation 9.19
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL - Maximum Value at Anytime12.78 beats per minuteStandard Deviation 11.13
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeBaseline (BL) - Value at Visit116.09 beats per minuteStandard Deviation 9.68
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 20.61 beats per minuteStandard Deviation 9.02
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 74.99 beats per minuteStandard Deviation 9.2
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 225.23 beats per minuteStandard Deviation 10.7
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL at Day 635.53 beats per minuteStandard Deviation 9.64
Arm 2: PH FDC SC Using the OBDSChange From Baseline Systolic Blood Pressure Over TimeChange from BL - Minimum Value at Anytime-3.51 beats per minuteStandard Deviation 8
Secondary

Number of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System Device

Details of performance and ease of use of the on-body delivery system (OBDS) were reported by site staff, using the device monitoring questionnaire in the eCRF. This included the following: Preparation of the injection site, Preparation of the OBDS, Prefilled cartridge inspection before insertion in the OBDS, Positioning and attachment of the OBDS on the anterior thigh, Drug delivery, and OBDS administration failures.

Time frame: Day 1

Population: The analysis only included healthcare professionals that treated participants in Arm 2: PH FDC SC Using OBDS who received the single dose of study treatment.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Injection Site Prepared as per Protocol?Yes74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Injection Site Prepared as per Protocol?No0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Injection Device Prepared as per Protocol?Yes74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Injection Device Prepared as per Protocol?No0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Body Positioning of the Device Compliant with Protocol?Yes74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWas the Body Positioning of the Device Compliant with Protocol?No0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWere There any Findings from the Cartridge Inspection?Yes0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWere There any Findings from the Cartridge Inspection?No74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWere There any Issues with the Attachment of the Device to the Body?Yes0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceWere There any Issues with the Attachment of the Device to the Body?No74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceDid you Experience any Device Failure?Yes0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceDid you Experience any Device Failure?No74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceHas Needle Been Inserted?Yes74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceHas Needle Been Inserted?No0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceHas Another Device Been Used?Yes0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Healthcare Professionals by Their Responses to the Device Monitoring Questionnaire Regarding Use of the On-Body Delivery System DeviceHas Another Device Been Used?No74 Participants
Secondary

Number of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring Questionnaire

Participants in the Phesgo OBDS arm completed the device monitoring questionnaire the injection with the OBDS. The questionnaire assessed the following criteria: ease of device attachment, attachment during the injection, ease of device removal, and overall wearing comfort, which were each rated on a three-point scale as Good, Acceptable, or Poor.

Time frame: Day 1

Population: The analysis only included participants in Arm 2: PH FDC SC Using OBDS who received the single dose of study treatment.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device AttachmentGood74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device AttachmentAcceptable0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device AttachmentPoor0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireAttachment of Device During InjectionGood73 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireAttachment of Device During InjectionAcceptable1 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireAttachment of Device During InjectionPoor0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device RemovalGood67 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device RemovalAcceptable6 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireEase of Device RemovalPoor1 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireOverall Wearing ComfortGood67 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireOverall Wearing ComfortAcceptable7 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants by Their Ratings of the Comfort of Wearing the On-Body Delivery System Device, as Reported in the Device Monitoring QuestionnaireOverall Wearing ComfortPoor0 Participants
Secondary

Number of Participants With Adverse Events Based on Laboratory Test Abnormalities

Not every laboratory abnormality qualified as an adverse event. A laboratory test result had to be reported as an adverse event if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment; resulted in a medical intervention or a change in concomitant therapy; was clinically significant in the investigator's judgment.

Time frame: From Baseline until Day 63

Population: Safety population: all participants who received the single dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesTransaminases increased1 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesAnaemia0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesAlanine aminotransferase increased0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesHepatic enzyme increased0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesNeutropenia0 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesHepatic enzyme increased1 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesTransaminases increased0 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesAlanine aminotransferase increased1 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesAnaemia1 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Adverse Events Based on Laboratory Test AbnormalitiesNeutropenia1 Participants
Secondary

Number of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the Investigator

For safety monitoring purposes, the investigator was required to review, sign, and date all electrocardiogram (ECG) reports. Any morphologic waveform changes or other ECG abnormalities were documented by the investigator. Post-baseline, if all examinations were normal, then it was categorized as 'Normal'. If any abnormality was reported, then it was categorized as 'Abnormal'. 'Clinically significant' is a subset of the abnormal category.

Time frame: At Baseline (predose) and Post-Baseline (postdose Days 2, 7, 22, and 63)

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed represents all participants with available data at baseline and at least at one post-baseline timepoint.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Abnormal ECG24 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Normal ECG42 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Normal ECG48 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Abnormal and Clinically Significant ECG0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Abnormal and Clinically Significant ECG0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Abnormal ECG30 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Abnormal and Clinically Significant ECG0 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Normal ECG42 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Abnormal ECG32 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorBaseline: Abnormal and Clinically Significant ECG0 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Normal ECG35 Participants
Arm 2: PH FDC SC Using the OBDSNumber of Participants With Normal or Abnormal Electrocardiogram Results at Baseline and Post-Baseline Anytime, as Determined by the InvestigatorPost-Baseline: Abnormal ECG39 Participants
Secondary

Number of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring Questionnaire

Skin irritation and sensitization reactions at the site of injection caused by the adhesion of the OBDS to the skin were assessed by the study staff using the device monitoring questionnaire in the eCRF. Dermal effects were reported on a scale from 0 (no evidence or irritation) to 7 (strong reaction spreading beyond test site). Other effects were reported on a separate scale from 0 (no evidence) to 7 (small petechial eruptions or scabs).

Time frame: Prior to injection and after injection on Day 1

Population: The analysis only included healthcare professionals that treated participants in Arm 2: PH FDC SC Using OBDS who received the single dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnairePrior to Injection, Dermal Effects: 0 - No Evidence or Irritation74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnaireAfter Injection, Dermal Effects: 0 - No Evidence or Irritation62 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnaireAfter Injection, Dermal Effects: 1 - Minimal Erythema12 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnairePrior to Injection, Other Effects: 0 - No Evidence or Irritation74 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnaireAfter Injection, Other Effects: 0 - No Evidence or Irritation73 Participants
Arm 1: PH FDC SC Using a Handheld SyringeNumber of Participants With Skin Irritation and Sensitization Reactions at the Injection Site, as Reported by Investigators in the Device Monitoring QuestionnaireAfter Injection, Other Effects: 1 - Slight Glazed Appearance1 Participants
Secondary

Observed Serum Concentration of Pertuzumab on Day 22

Time frame: Day 22

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. Only participants who provided PK samples on Day 22 were included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeObserved Serum Concentration of Pertuzumab on Day 2234.2 microgram per millilitre (μg/mL)Standard Deviation 10.6
Arm 2: PH FDC SC Using the OBDSObserved Serum Concentration of Pertuzumab on Day 2234.6 microgram per millilitre (μg/mL)Standard Deviation 8.79
Secondary

Observed Serum Concentration of Pertuzumab on Day 63

Time frame: Day 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. Only participants who provided PK samples on Day 63 were included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeObserved Serum Concentration of Pertuzumab on Day 636.23 microgram per millilitre (μg/mL)Standard Deviation 3.64
Arm 2: PH FDC SC Using the OBDSObserved Serum Concentration of Pertuzumab on Day 636.23 microgram per millilitre (μg/mL)Standard Deviation 5.42
Secondary

Observed Serum Concentration of Trastuzumab on Day 22

Time frame: Day 22

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. Only participants who provided PK samples on Day 22 were included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringeObserved Serum Concentration of Trastuzumab on Day 2229.9 microgram per millilitre (μg/mL)Standard Deviation 10.7
Arm 2: PH FDC SC Using the OBDSObserved Serum Concentration of Trastuzumab on Day 2229.5 microgram per millilitre (μg/mL)Standard Deviation 6.72
Secondary

Observed Serum Concentration of Trastuzumab on Day 63

Time frame: Day 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. Only participants who provided PK samples on Day 63 were included in this analysis.

ArmMeasureValue (MEDIAN)
Arm 1: PH FDC SC Using a Handheld SyringeObserved Serum Concentration of Trastuzumab on Day 631.00 microgram per millilitre (μg/mL)
Arm 2: PH FDC SC Using the OBDSObserved Serum Concentration of Trastuzumab on Day 631.00 microgram per millilitre (μg/mL)
Secondary

Observed Time to Maximum Serum Concentration (Tmax) of Pertuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEDIAN)
Arm 1: PH FDC SC Using a Handheld SyringeObserved Time to Maximum Serum Concentration (Tmax) of Pertuzumab4.00 Days
Arm 2: PH FDC SC Using the OBDSObserved Time to Maximum Serum Concentration (Tmax) of Pertuzumab4.00 Days
Secondary

Observed Time to Maximum Serum Concentration (Tmax) of Trastuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEDIAN)
Arm 1: PH FDC SC Using a Handheld SyringeObserved Time to Maximum Serum Concentration (Tmax) of Trastuzumab4.01 Days
Arm 2: PH FDC SC Using the OBDSObserved Time to Maximum Serum Concentration (Tmax) of Trastuzumab4.00 Days
Secondary

Pain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog Scale

Pain intensity scores were assessed by the participants using the Visual Analog Scale (VAS) on a line measuring between 0 mm ('no pain') and 100 mm ('unbearable pain'). The VAS was completed in both study arms to assess the level of pain experienced by the participant in relation to the injection of Phesgo. On Day 1, pain assessments were performed prior to, during, and immediately after injection of Phesgo when the needle or device was removed, and 2 hours after injection.

Time frame: Day 1: pre-dose, during drug injection, after drug injection while removing the device or syringe, and 2 hours after drug injection

Population: Safety population: all participants who received the single dose of study treatment. The number analyzed indicates all participants who responded to the questionnaire at a given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 1: PH FDC SC Using a Handheld SyringePain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScalePrior to Injection0.68 score on a scaleStandard Deviation 1.45
Arm 1: PH FDC SC Using a Handheld SyringePain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScaleDuring Injection6.85 score on a scaleStandard Deviation 8.79
Arm 1: PH FDC SC Using a Handheld SyringePain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScaleImmediately Post-Injection8.56 score on a scaleStandard Deviation 12.62
Arm 1: PH FDC SC Using a Handheld SyringePain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog Scale2 Hours After Injection3.11 score on a scaleStandard Deviation 5.29
Arm 2: PH FDC SC Using the OBDSPain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog Scale2 Hours After Injection1.62 score on a scaleStandard Deviation 5.97
Arm 2: PH FDC SC Using the OBDSPain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScalePrior to Injection0.50 score on a scaleStandard Deviation 1.52
Arm 2: PH FDC SC Using the OBDSPain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScaleImmediately Post-Injection5.04 score on a scaleStandard Deviation 7.82
Arm 2: PH FDC SC Using the OBDSPain Score at the Injection Site, Assessed by the Participant Using the 100-millimetre (mm) Visual Analog ScaleDuring Injection8.95 score on a scaleStandard Deviation 10.28
Secondary

Summary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)

The adverse event (AE) severity grading scale NCI CTCAE v5.0 was used for assessing AE severity. Any AEs for which the NCI CTCAE v5.0 did not provide a grading scale, the standard four-point scale from 1 to 4 (mild, moderate, severe, life-threatening) was used. The terms severe and serious are not synonymous and are independently assessed for each AE. Multiple occurrences of AEs were counted only once per participant at the highest (worst) grade. AEs to monitor included administration-related reactions, hypersensitivity and anaphylaxis, diarrhoea, rash, cardiac dysfunction, neutropenia or febrile neutropenia, mucositis, and interstitial lung disease.

Time frame: From study drug dose until safety follow-up visit (up to 7 months)

Population: Safety population: all participants who received the single dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Any Adverse Event (AE)70 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE with Fatal Outcome0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Serious AE1 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Related Serious AE0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Grade 3 to 4 AE1 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE Leading to Drug Interruption0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Device Related AE0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Any AE to Monitor63 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Anaphylaxis and Hypersensitivity, Any Grade48 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Anaphylaxis and Hypersensitivity, Grade ≥30 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Infusion/Admin. Related Reactions Within 24 hours, Any Grade62 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Infusion/Admin. Related Reactions Within 24 hours, Grade ≥30 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Rash/Skin Reactions, Any Grade0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Diarrhoea, Any Grade17 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Diarrhoea, Grade ≥30 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Cardiac Dysfunction, Any Grade0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Interstitial Lung Disease, Any Grade0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Neutropenia/Febrile Neutropenia, Any Grade0 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Neutropenia/Febrile Neutropenia, Grade ≥30 Participants
Arm 1: PH FDC SC Using a Handheld SyringeSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Serious Mucositis, Any Grade0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Neutropenia/Febrile Neutropenia, Any Grade1 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Any Adverse Event (AE)71 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Infusion/Admin. Related Reactions Within 24 hours, Any Grade55 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE with Fatal Outcome0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Cardiac Dysfunction, Any Grade0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Serious AE0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Infusion/Admin. Related Reactions Within 24 hours, Grade ≥30 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Related Serious AE0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Serious Mucositis, Any Grade0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Grade 3 to 4 AE0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Rash/Skin Reactions, Any Grade0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE Leading to Drug Interruption0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Interstitial Lung Disease, Any Grade0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Device Related AE0 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Diarrhoea, Any Grade9 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)Any AE to Monitor59 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Neutropenia/Febrile Neutropenia, Grade ≥30 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Anaphylaxis and Hypersensitivity, Any Grade36 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Diarrhoea, Grade ≥30 Participants
Arm 2: PH FDC SC Using the OBDSSummary of the Number of Participants With at Least One Adverse Event, With Severity Determined According to the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE v5.0)AE to Monitor: Anaphylaxis and Hypersensitivity, Grade ≥30 Participants
Secondary

Terminal Elimination Half-Life (t1/2) of Pertuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEDIAN)
Arm 1: PH FDC SC Using a Handheld SyringeTerminal Elimination Half-Life (t1/2) of Pertuzumab15.6 Days
Arm 2: PH FDC SC Using the OBDSTerminal Elimination Half-Life (t1/2) of Pertuzumab15.1 Days
Secondary

Terminal Elimination Half-Life (t1/2) of Trastuzumab

Time frame: Predose (0 hour) and 2, 6, and 12 hours postdose on Day 1, and postdose on Days 2, 3, 5, 7, 9, 11, 15, 22, 35, 49, and 63

Population: The Per Protocol PK Population (PAP) includes all randomized participants who were treated and adhered to the pre-specified protocol criteria. The number analyzed includes participants in the PAP with adequate concentration profiles, which allowed for individual PK parameters to be estimated.

ArmMeasureValue (MEDIAN)
Arm 1: PH FDC SC Using a Handheld SyringeTerminal Elimination Half-Life (t1/2) of Trastuzumab8.93 Days
Arm 2: PH FDC SC Using the OBDSTerminal Elimination Half-Life (t1/2) of Trastuzumab8.43 Days

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026