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A Study of TAK-771 in Japanese People With Primary Immunodeficiency Diseases (PID)

A Phase 3, Open-label, Non-controlled Study to Evaluate the Pharmacokinetics, Safety and Tolerability, and Efficacy of TAK-771 in Japanese Subjects With Primary Immunodeficiency Diseases (PID)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05150340
Enrollment
16
Registered
2021-12-09
Start date
2022-01-24
Completion date
2023-08-28
Last updated
2024-11-25

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

Conditions

Primary Immunodeficiency Diseases (PID)

Brief summary

The main aim of the study is to check how much TAK-771 stays in their blood over time, side effect from the study treatment or TAK-771, how much TAK-771 participants can receive without getting side effects from it, and if TAK-771 improves symptoms of primary immunodeficiency diseases (PID). This will help the study sponsor (Takeda) to work out the best dose to give people in the future. The participants will be treated with TAK-771 for totally 27 or 30 weeks. Treatment period is consist of two periods called Epoch 1 and Epoch 2. In Epoch 1, different groups of participants will receive lower to higher doses of TAK-771 for 3 to 6 weeks. The study doctors will check for side effects from each dose of TAK-771. In Epoch 2, participants will receive TAK-771 once a 3 or 4 weeks until the end of 24 weeks. There will be many clinic visits. The number of visits will depend on the infusion cycles of study drug (every 3, or 4 weeks).

Interventions

Intervention description; Immune Globulin Infusion (IGI) 10% and Recombinant Human Hyaluronidase (rHuPH20)

Sponsors

Takeda
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Be a Japanese person. 2. Participant must have a documented diagnosis of a form of primary humoral immunodeficiency involving antibody formation and requiring gammaglobulin replacement, as defined according to the International Union of Immunological Societies(IUIS) Committee 2017. The diagnosis must be confirmed by the Medical Director prior to TAK-771 treatment. 3. Participant has been receiving a stable clinical dose of intravenous immunoglobulin (IVIG) or conventional subcutaneous immunoglobulin (cSCIG), which is equivalent to approximately 200 to 600 mg/kg body weight per 3 to 4 week period for IVIG and approximately 50 to 200 mg/kg body weight per week for cSCIG based on the description in the package insert, consistently over a period of at least 3 months prior to screening, or Participant has been receiving of TAK-664 with fixed dose and dosing frequency at least 3 months prior to enrollment. That is, participant is about to complete Study TAK-664-3001 or participating in Study TAK-664-3002. 4. Participant who has been receiving IVIG or cSCIG had all serum trough levels of total immunoglobulin G (IgG) \>=5 g/L within 1 month prior to the screening/enrollment. 5. Serum trough levels at screening/enrollment meet one of the following: 1. IVIG-treated or cSCIG-treated participants Participant who had serum trough levels of IgG \>=5 g/L at the last 2 points in screening procedure before the first administration of TAK-771. 2. TAK-664-treated participants Participant who had serum trough levels of IgG \>=5 g/L at the last 2 points in TAK-664 studies before the first administration of TAK-771. 6. Participant is willing and able to comply with use of digital tools and applications.

Exclusion criteria

1. Participant has a known history of or is positive at screening/enrollment for one or more of the following: hepatitis B surface antigen (HBsAg), polymerase chain reaction (PCR) for hepatitis C virus (HCV), PCR for human immunodeficiency virus (HIV) Type 1/2 For participants who are switching from TAK-664 studies, the eligibility will be reconfirmed after result of the specialty test conducted at Week 1 become available. 2. Abnormal laboratory values at screening/enrollment meeting any one of the following criteria (abnormal tests may be repeated once to determine if they are persistent): * Persistent alanine aminotransferase (ALT) and aspartate aminotransferase (AST) \>2.5 times the upper limit of normal (ULN) for the testing laboratory * Persistent severe neutropenia (defined as an absolute neutrophil count \[ANC\] =\<500/mm\^3) 3. Participant has presence of renal function impairment defined by eGFR \<60 mL/min/1.73m\^2. 4. Participant has been diagnosed with, or had a malignancy (other than adequately treated basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the cervix) unless the disease-free period prior to screening exceeds 5 years. 5. Participant is receiving anti-coagulation therapy or has a history of thrombotic episodes (including deep vein thrombosis, myocardial infarction, cerebrovascular accident, pulmonary embolism) within 12 months prior to screening/enrollment or a history of thrombophilia. 6. Participant has abnormal protein loss (protein losing enteropathy, nephrotic syndrome) 7. Participant has anemia that would preclude phlebotomy for laboratory studies according to standard practice at the site. 8. Participant has an ongoing history of hypersensitivity or persistent reactions (urticaria, breathing difficulty, severe hypotension, or anaphylaxis) following IVIG, subcutaneous immunoglobulin (SCIG), and/or Immune Serum Globulin infusions 9. Participant has immunoglobulin A (IgA) deficiency (serum IgA less than 0.07g/L) and history of hypersensitivity, or history of confirmed anti-IgA antibodies, or both. 10. Participant is on preventative (prophylactic) systemic antibacterial antibiotics at doses sufficient to treat or prevent bacterial infections, and cannot stop these antibiotics at the time of screening/enrollment. 11. Participant has active infection and is receiving antibiotic therapy for the treatment of infection at the time of screening/enrollment or had a serious bacterial infection within the 3 months prior to screening/enrollment 12. Participant has a bleeding disorder, or a platelet count less than 20,000/microL, or in the opinion of the investigator, would be at significant risk of increased bleeding or bruising as a result of subcutaneous (SC) therapy. 13. Participant has total protein \>9 g/dL or myeloma, or macroglobulinemia (IgM) or paraproteinemia. 14. Participant has a known allergy to hyaluronidase 15. Participant has severe dermatitis that would preclude adequate sites for safe product administration.

Design outcomes

Primary

MeasureTime frameDescription
Epoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Up to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing IntervalThe data was reported at Week 7, 11, 15, 19, 23, 27, and 31 for 4-Week interval and at Week 4, 7, 10, 13, 16, 19, 22, 25 and 28 for 3-Week interval.

Secondary

MeasureTime frameDescription
Epoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.
Epoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.AUC is expressed as grams\*day per liter/grams per kilograms \[(g\*day/L)/(g/kg)\].
Epoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)At multiple time points post-infusion from Week 7 for participants with 4-Week or Week 4 with 3-Week dosing interval up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval
Epoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.
Epoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.
Epoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.
Epoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-7714-Week dosing interval (Week 7, Week 11, Week 15, Week 19, Week 23, Week 27, and Week 31); 3-Week dosing interval (Week 4, week 7, Week 10, Week 16, Week 19, Week 22, Week 25, and Week 28)
Epoch 1 and 2: Trough Levels of Anti-Clostridium Tetani Toxoid Antibody After Administration of TAK-771From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval)
Epoch 1 and 2: Trough Levels of Anti-HBV Antibody After Administration of TAK-771From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval)
Epoch 1 and 2: Trough Levels of Anti-HIB Antibody After Administration of TAK-771From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval).
Percentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalTEAEs are defined as AEs with onset after date-time of first dose of IP, or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP.
Percentage of Participants With Treatment-Emergent Adverse Events (TEAEs)From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalTEAEs are defined as Adverse events (AEs) with onset after date-time of first dose of Investigational product (IP), or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP.
Percentage of Participants With Serious and Non-serious TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalTEAEs are defined as AEs with onset after date-time of first dose of IP, or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP. Serious TEAE=any untoward clinical manifestation of signs, symptoms, outcomes (related to IP or not) at any dose: results in death, was life-threatening, requires inpatient/prolongation of hospitalization, resulted in persistent/significant disability/incapacity, congenital abnormality/birth defect, important medical event. AESI=investigator-reported hypersensitivity reactions, events of disordered coagulation as bleeding/hypercoagulable AESI.
Percentage of Participants With Severe TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Percentage of Participants With Local and Systemic TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Percentage of Participants With TEAEs Leading to Premature Discontinuation From StudyFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Percentage of Participants With Infusion-associated TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Percentage of Participants With Clinically Significant Changes in Clinical Laboratory Parameters Recorded as TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Percentage of Participants With Clinically Significant Changes in Vital Signs and Body Weight Recorded as TEAEsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Epoch 2: Percentage of Participants Who Develop Anti-rHuPH20 Binding Antibody Titers of Greater Than or Equal to 1:1604-Week Dosing Interval (Week 7, Week 19, and Week 31); 3-Week Dosing Interval (Week 4, Week 16, and Week 28)
Epoch 2: Percentage of Participants Who Develop Neutralizing Antibodies to rHuPH204-Week Dosing Interval (Week 7, Week 19, and Week 31); 3-Week Dosing Interval (Week 4, Week 16, and Week 28)
Percentage of Participants Who Experienced Tolerability Events Related to the Infusion of TAK-771From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalTolerability events is defined as a case that the infusion rate is reduced, or that the infusion is interrupted or stopped, due to a TEAE related to TAK-771 infusion.
Epoch 1: Number of Weeks to Reach Final Dose Interval (3 Weeks or 4 Weeks)Up to Week 4 for Participants with 4-Week Dosing Interval or Up to Week 3 for Participants with 3-Week Dosing IntervalThe number of weeks to reach final dose interval is defined as treatment duration of Epoch 1.
Epoch 2: Percentage of Participants Who Achieve a Treatment Interval of 3 or 4 WeeksUp to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval
Epoch 2: Percentage of Participants Who Maintain a Treatment Interval of 3 or 4 WeeksUp to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval
Annual Rate of Validated Acute Serious Bacterial Infections (ASBIs) Per Participant Per YearFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalThe annual rate of validated ASBIs is calculated as the mean number of ASBIs per participant per year.
Annual Rate of All Infections Per Participant Per YearFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing IntervalThe annual rate of all infections is calculated as the mean number of infections per participant per year.
Healthcare Resource Utilization: Days Not Able To Attend School/Work or To Perform Normal Daily Activities Due to Illness/InfectionFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Healthcare Resource Utilization: Days on AntibioticsFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Healthcare Resource Utilization: Number of Hospitalizations Due to Illness/Infection Per YearFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Healthcare Resource Utilization: Length of Stay in Days of Hospitalizations Due to Illness/Infection Per Participant Per YearFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Healthcare Resource Utilization: Number of Acute (Urgent or Unscheduled) Physician Visits Due to Illness/InfectionFrom Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval
Infusion Parameters in Epoch 2: Number of Infusion Sites Per InfusionFrom Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing IntervalTotal number of infusion sites injected in Epoch 2 / Total number of infusions administered in Epoch 2.
Infusion Parameters in Epoch 2: Number of Infusion Sites Per MonthFrom Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing IntervalTotal number of infusion sites injected in Epoch 2 / (duration of Epoch 2 / 30.4375), where duration of Epoch 2 is calculated as the end date of the Epoch 2 - the start date of the Epoch 2 + 1.
Infusion Parameters in Epoch 2: Duration of Individual InfusionsFrom Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing IntervalEnd date and time of infusion in Epoch 2 - Start date and time of infusion in Epoch 2, for each infusion per participant.
Infusion Parameters in Epoch 2: Maximum Infusion Rate Per SiteFrom Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing IntervalMaximum Infusion Rate results from CRF / number of infusion sites/body.
Infusion Parameters in Epoch 2: Infusion Volume Per SiteFrom Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing IntervalInfusion Volume per Site is scheduled Dose results from CRF / number of infusion sites/body.
Quality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)4-Week Dosing Interval (Week 1 and Week 31); 3-Week Dosing Interval (Week 1 and Week 28)The PEDS-QL is a generic Health-Related Quality of Life (HR QoL) instrument designed specifically for a pediatric population. It captures the following domains: general health/activities, feelings/emotional, social functioning, school functioning. In this study, 2-7 years (parent as observer), 8-13 years (participant as observer) for PEDS-QL health questionnaire will be analyzed. Higher scores indicate better quality of life (QOL) for all domains of the PEDS-QL. This modular instrument uses a 5-point scale: from 0 (never) to 4 (almost always). Items are reversed scored and linearly transformed to a 0-100 scale as follows: 0=100, 1=75, 2=50, 3=25, 4=0. Four dimensions (physical, emotional, social, & school functioning) are scored.
Epoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesPre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.
QOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index Score4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)The EQ-5D-3L is a standardized instrument for use as a measure of health outcome and was administered to all participants to assess the effect of the treatment on the participants' quality of life. Participants select answer for each of the following 3-level dimensions: 1) mobility; 2) self-care; 3) usual activities; 4) pain/discomfort; 5) anxiety/depression used to compute an index score ranging from 0 (worst imaginable health state) to 1 (best imaginable health state). An increase in the EQ-5D-3L index score indicates improvement.
QOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) Score4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)The EQ-5D-3L is a standardized instrument for use as a measure of health outcome and was administered to all participants to assess the effect of the treatment on the participants' quality of life. The EQ-5D-3L includes a visual analog scale (VAS), a vertical scale that allows the participants to indicate their health state that day, and ranges from 0 (worst imaginable) to 100 (best imaginable), with higher scores indicating better health state.
Treatment PreferenceUp to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing IntervalTreatment preference questionnaire is a self-administered questionnaire developed to assess participants' preference towards the administration of new subcutaneous immunoglobulin (SCIG) therapy. There are 4-items on the questionnaire, which investigate a participant's preference on the clinic/hospital/home setting of receiving the immunoglobulin (IG) therapy, the participant's rating on the frequency and method of administration, and the participant's preference to continue receiving the IGSC treatment.
Treatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)Treatment Satisfaction Questionnaire for Medication (TSQM) is a global satisfaction scale used to assess the overall level of participant's satisfaction or dissatisfaction with their medications. In this study, 2-12 years (parent as observer), 13 years and older (participant as observer) for TSQM health questionnaire will be analyzed. TSQM-9 is a 9-item, validated, self-administered instrument used to assess participant's satisfaction with medication. The three domains assessed are effectiveness, convenience, and global satisfaction. The score of each of the 3 domains is based on an algorithm to create a score of 0 to 100. Higher score indicated greater satisfaction in that domain.
QOL: Short Form-36 Health Survey Version 2 (SF-36 v2)4-Week Dosing Interval (Week 1 and Week 31); 3-Week Dosing Interval (Week 1 and Week 28)The SF-36 is a generic quality-of-life instrument that has been widely used to assess Health-Related Quality of Life (HR QoL) of participants. In this study, 14 years and older (participant as observer) for SF-36 health questionnaire will be analyzed. Generic instruments are used in general populations to assess a wide range of domains applicable to a variety of health states, conditions, and diseases. The SF-36 consists of 36 items that are aggregated into 8 multi-item scales (physical functioning, role - physical, bodily pain, general health, vitality, social functioning, role - emotional, and mental health), with scores ranging from 0 to 100. Higher scores indicate better HR QoL. Physical component summary (PCS).

Countries

Japan

Participant flow

Recruitment details

Participants with a confirmed diagnosis of primary immunodeficiency diseases (PID) took part in the study at 12 investigative sites in Japan from 24 January 2022 to 28 August 2023.

Pre-assignment details

Participants with PID, who had been receiving a consistent dose of intravenous immunoglobulin (IVIG), conventional subcutaneous immunoglobulin (cSCIG) or TAK-664 (immune globulin subcutaneous \[human\], 20% solution \[20%SCIG\]) for at least 3 months prior to screening were enrolled in the study to receive TAK-771.

Participants by arm

ArmCount
Epoch 1: TAK-771
TAK-771 included IGI 10% and rHuPH20. Participants received subcutaneous infusion of rHuPH20 solution at a dose of 80 U/g IgG first, followed by SC infusion of 10% IGI within 10 minutes of completion of the infusion of rHuPH20 solution. The dose of 10% IGI was increased from 1/3 of full dose to full dose in 3 weeks for participants who received TAK-771 once every 3 weeks, or from 1/4 of full dose to full dose in 6 weeks for participants who received TAK-771 once every 4 weeks.
16
Total16

Baseline characteristics

CharacteristicEpoch 1: TAK-771
Age, Continuous25.2 Years
STANDARD_DEVIATION 16.86
Body Mass Index (BMI)19.05 kilograms per meter square (kg/m^2)
STANDARD_DEVIATION 2.747
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Height at Baseline149.26 Centimeters (cm)
STANDARD_DEVIATION 25.892
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
16 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
0 Participants
Region of Enrollment
Japan
16 Participants
Sex: Female, Male
Female
6 Participants
Sex: Female, Male
Male
10 Participants
Weight at Baseline44.33 Kilograms (kg)
STANDARD_DEVIATION 16.509

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 160 / 16
other
Total, other adverse events
13 / 1615 / 16
serious
Total, serious adverse events
1 / 161 / 16

Outcome results

Primary

Epoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771

The data was reported at Week 7, 11, 15, 19, 23, 27, and 31 for 4-Week interval and at Week 4, 7, 10, 13, 16, 19, 22, 25 and 28 for 3-Week interval.

Time frame: Up to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval

Population: PK analysis set: all enrolled participants who received investigational drug once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect serum IgG concentration analysis results. PK set 1: analysis of total serum IgG trough levels for total serum levels of IgG and IgG subclasses. Overall number analyzed: number of participants available for analysis. Number analyzed: participants with data available for analysis at given timepoint.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 15, 4-Week Interval8.929 grams/Liter (g/L)Geometric Coefficient of Variation 13
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 19, 4-Week Interval9.150 grams/Liter (g/L)Geometric Coefficient of Variation 15.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 23, 4-Week Interval8.944 grams/Liter (g/L)Geometric Coefficient of Variation 20.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 27, 4-Week Interval9.006 grams/Liter (g/L)Geometric Coefficient of Variation 18.4
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 31, 4-Week Interval9.159 grams/Liter (g/L)Geometric Coefficient of Variation 20.8
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 10, 3-Week Interval12.54 grams/Liter (g/L)Geometric Coefficient of Variation 43.2
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 16, 3-Week Interval13.50 grams/Liter (g/L)Geometric Coefficient of Variation 39.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 19, 3-Week Interval12.76 grams/Liter (g/L)Geometric Coefficient of Variation 46.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 7, 4-Week Interval9.372 grams/Liter (g/L)Geometric Coefficient of Variation 10.3
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 11, 4-Week Interval8.741 grams/Liter (g/L)Geometric Coefficient of Variation 13.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 4, 3-Week Interval13.51 grams/Liter (g/L)Geometric Coefficient of Variation 29.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 7, 3-Week Interval13.15 grams/Liter (g/L)Geometric Coefficient of Variation 35.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 22, 3-Week Interval12.79 grams/Liter (g/L)Geometric Coefficient of Variation 40.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 25, 3-Week Interval12.95 grams/Liter (g/L)Geometric Coefficient of Variation 57.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of Total IgG Antibodies After Administration of TAK-771Week 28, 3-Week Interval12.70 grams/Liter (g/L)Geometric Coefficient of Variation 43
Secondary

Annual Rate of All Infections Per Participant Per Year

The annual rate of all infections is calculated as the mean number of infections per participant per year.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodAnnual Rate of All Infections Per Participant Per Year2.69 infections per participant per yearStandard Deviation 3.133
Secondary

Annual Rate of Validated Acute Serious Bacterial Infections (ASBIs) Per Participant Per Year

The annual rate of validated ASBIs is calculated as the mean number of ASBIs per participant per year.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodAnnual Rate of Validated Acute Serious Bacterial Infections (ASBIs) Per Participant Per Year0.00 ASBIs per participant per yearStandard Deviation 0
Secondary

Epoch 1 and 2: Trough Levels of Anti-Clostridium Tetani Toxoid Antibody After Administration of TAK-771

Time frame: From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval)

Population: PK Analysis Set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK Analysis Set included the analysis of total serum IgG trough levels for total serum levels of IgG and IgG subclasses. Number analyzed are number of participants with data available for analysis at given timepoint.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-Clostridium Tetani Toxoid Antibody After Administration of TAK-771Week 11.334 IU/mLGeometric Coefficient of Variation 84.4
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-Clostridium Tetani Toxoid Antibody After Administration of TAK-771End of Trial (EOS)1.578 IU/mLGeometric Coefficient of Variation 68.4
Secondary

Epoch 1 and 2: Trough Levels of Anti-HBV Antibody After Administration of TAK-771

Time frame: From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval)

Population: Pharmacokinetic Analysis Set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect serum IgG concentration analysis results. Pharmacokinetic Analysis Set included analysis of total serum IgG trough levels for total serum levels of IgG and IgG subclasses. Number analyzed are number of participants with data available for analysis at given timepoint.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-HBV Antibody After Administration of TAK-771Week 1278.38 mIU/mLGeometric Coefficient of Variation 125
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-HBV Antibody After Administration of TAK-771End of Trial (EOS)383.37 mIU/mLGeometric Coefficient of Variation 57.7
Secondary

Epoch 1 and 2: Trough Levels of Anti-HIB Antibody After Administration of TAK-771

Time frame: From Week 1, up to end of trial (EOS: Week 31 for participants with 4-Week dosing interval or Week 28 for participants with 3-Week dosing interval).

Population: PK Analysis Set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK Analysis Set included analysis of total serum IgG trough levels for total serum levels of IgG and IgG subclasses. Number analyzed are number of participants with data available for analysis at given timepoint.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-HIB Antibody After Administration of TAK-771Week 11.958 ug/mLGeometric Coefficient of Variation 45.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1 and 2: Trough Levels of Anti-HIB Antibody After Administration of TAK-771End of Trial (EOS)1.519 ug/mLGeometric Coefficient of Variation 46.8
Secondary

Epoch 1: Number of Weeks to Reach Final Dose Interval (3 Weeks or 4 Weeks)

The number of weeks to reach final dose interval is defined as treatment duration of Epoch 1.

Time frame: Up to Week 4 for Participants with 4-Week Dosing Interval or Up to Week 3 for Participants with 3-Week Dosing Interval

Population: Safety Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 1: Number of Weeks to Reach Final Dose Interval (3 Weeks or 4 Weeks)6.00 weeks
Secondary

Epoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: PK analysis set: all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK analysis set 2: the analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number of participants analyzed is number of participants available for analysis.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgG76.84 milliliters per day (mL/day)Geometric Coefficient of Variation 29.4
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1)117.0 milliliters per day (mL/day)Geometric Coefficient of Variation 37.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2)219.6 milliliters per day (mL/day)Geometric Coefficient of Variation 36.8
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3)6392 milliliters per day (mL/day)Geometric Coefficient of Variation 176.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Total Clearance (CL/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4)3234 milliliters per day (mL/day)Geometric Coefficient of Variation 58
Secondary

Epoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: PK analysis set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK analysis set 2=analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number participants analyzed: number of participants available for analysis.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgGNA mL
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1)8193 mLGeometric Coefficient of Variation 54.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2)14650 mLGeometric Coefficient of Variation 57
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3)NA mL
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Apparent Volume of Distribution (Vz/F) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4)165900 mLGeometric Coefficient of Variation 88.3
Secondary

Epoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

AUC is expressed as grams\*day per liter/grams per kilograms \[(g\*day/L)/(g/kg)\].

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: PK analysis set: all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK analysis set 2: analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number of participants analyzed are number of participants available for analysis.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgG, AUClast/Dose625.6 (g*day/L)/(g/kg)Geometric Coefficient of Variation 55.2
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1), AUCtau/Dose432.4 (g*day/L)/(g/kg)Geometric Coefficient of Variation 36.2
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1), AUClast/Dose370.7 (g*day/L)/(g/kg)Geometric Coefficient of Variation 53
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2), AUCtau/Dose230.4 (g*day/L)/(g/kg)Geometric Coefficient of Variation 25.2
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2), AUClast/Dose197.4 (g*day/L)/(g/kg)Geometric Coefficient of Variation 40.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3), AUCtau/Dose7.916 (g*day/L)/(g/kg)Geometric Coefficient of Variation 165.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3), AUClast/Dose5.449 (g*day/L)/(g/kg)Geometric Coefficient of Variation 227.2
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4), AUCtau/Dose15.65 (g*day/L)/(g/kg)Geometric Coefficient of Variation 37.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgG, AUCtau/Dose767.9 (g*day/L)/(g/kg)Geometric Coefficient of Variation 40
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Area Under the Curve (AUC) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4), AUClast/Dose12.08 (g*day/L)/(g/kg)Geometric Coefficient of Variation 53.4
Secondary

Epoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

Time frame: At multiple time points post-infusion from Week 7 for participants with 4-Week or Week 4 with 3-Week dosing interval up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval

Population: PK analysis set: all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK analysis set 2: analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number of participants analyzed is number of participant available for analysis.

ArmMeasureGroupValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2)49.6 day
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3)NA day
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4)35.9 day
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgGNA day
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Half-life of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1)59.7 day
Secondary

Epoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG Subclasses

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: Pharmacokinetic analysis set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. Pharmacokinetic analysis set 2 included the analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesTotal IgG12.72 g/LGeometric Coefficient of Variation 23.4
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesIgG Subclass (IgG 1)7.694 g/LGeometric Coefficient of Variation 16.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesIgG Subclass (IgG 2)4.140 g/LGeometric Coefficient of Variation 23
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesIgG Subclass (IgG 3)0.2396 g/LGeometric Coefficient of Variation 46.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Maximum Concentration (Cmax) of Total Serum Levels of IgG and IgG SubclassesIgG Subclass (IgG 4)0.3200 g/LGeometric Coefficient of Variation 36.3
Secondary

Epoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: PK analysis set: all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect serum IgG concentration analysis results. PK analysis set 2: analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number of participants analyzed: number of participants available for analysis.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3)NA g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4)0.2255 g/LGeometric Coefficient of Variation 8.4
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgG9.347 g/LGeometric Coefficient of Variation 17.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1)5.479 g/LGeometric Coefficient of Variation 10.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Minimum Concentration (Cmin) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2)2.941 g/LGeometric Coefficient of Variation 19.8
Secondary

Epoch 2: Percentage of Participants Who Achieve a Treatment Interval of 3 or 4 Weeks

Time frame: Up to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Percentage of Participants Who Achieve a Treatment Interval of 3 or 4 Weeks100.0 percentage of participants
Secondary

Epoch 2: Percentage of Participants Who Develop Anti-rHuPH20 Binding Antibody Titers of Greater Than or Equal to 1:160

Time frame: 4-Week Dosing Interval (Week 7, Week 19, and Week 31); 3-Week Dosing Interval (Week 4, Week 16, and Week 28)

Population: Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Percentage of Participants Who Develop Anti-rHuPH20 Binding Antibody Titers of Greater Than or Equal to 1:1600 percentage of participants
Secondary

Epoch 2: Percentage of Participants Who Develop Neutralizing Antibodies to rHuPH20

Time frame: 4-Week Dosing Interval (Week 7, Week 19, and Week 31); 3-Week Dosing Interval (Week 4, Week 16, and Week 28)

Population: Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Percentage of Participants Who Develop Neutralizing Antibodies to rHuPH200 percentage of participants
Secondary

Epoch 2: Percentage of Participants Who Maintain a Treatment Interval of 3 or 4 Weeks

Time frame: Up to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Percentage of Participants Who Maintain a Treatment Interval of 3 or 4 Weeks100.0 percenatge of participants
Secondary

Epoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771

Time frame: 4-Week dosing interval (Week 7, Week 11, Week 15, Week 19, Week 23, Week 27, and Week 31); 3-Week dosing interval (Week 4, week 7, Week 10, Week 16, Week 19, Week 22, Week 25, and Week 28)

Population: PK analysis set: all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. PK analysis set 2: analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2. Number analyzed: participants with data available for analysis at given time point.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 7, 4-Week Interval0.1933 g/LGeometric Coefficient of Variation 15.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 11, 4-Week Interval0.1965 g/LGeometric Coefficient of Variation 22.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 25, 3-Week Interval1.910 g/LGeometric Coefficient of Variation 73.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 28, 3-Week Interval1.948 g/LGeometric Coefficient of Variation 88.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 4, 3-Week Interval0.1680 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 7, 3-Week Interval0.1680 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 7, 4-Week Interval5.478 g/LGeometric Coefficient of Variation 12.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 11, 4-Week Interval5.106 g/LGeometric Coefficient of Variation 15.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 15, 4-Week Interval4.987 g/LGeometric Coefficient of Variation 11.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 19, 4-Week Interval5.063 g/LGeometric Coefficient of Variation 10.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 23, 4-Week Interval4.873 g/LGeometric Coefficient of Variation 10.8
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 27, 4-Week Interval5.066 g/LGeometric Coefficient of Variation 16.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 31, 4-Week Interval5.104 g/LGeometric Coefficient of Variation 14
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 7, 4-Week Interval3.147 g/LGeometric Coefficient of Variation 20.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 11, 4-Week Interval2.931 g/LGeometric Coefficient of Variation 15
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 15, 4-Week Interval2.912 g/LGeometric Coefficient of Variation 13.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 19, 4-Week Interval3.043 g/LGeometric Coefficient of Variation 16.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 23, 4-Week Interval2.976 g/LGeometric Coefficient of Variation 16.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 27, 4-Week Interval3.078 g/LGeometric Coefficient of Variation 15.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 31, 4-Week Interval3.091 g/LGeometric Coefficient of Variation 18.3
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 3, Week 7, 4-Week Interval0.1380 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 3, Week 11, 4-Week Interval0.1780 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 3, Week 15, 4-Week Interval0.1390 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 3, Week 27, 4-Week Interval0.2280 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 15, 4-Week Interval0.2020 g/LGeometric Coefficient of Variation 16.8
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 19, 4-Week Interval0.2057 g/LGeometric Coefficient of Variation 16.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 23, 4-Week Interval0.2054 g/LGeometric Coefficient of Variation 14.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 27, 4-Week Interval0.2228 g/LGeometric Coefficient of Variation 24.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 31, 4-Week Interval0.2265 g/LGeometric Coefficient of Variation 25.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 4, 3-Week Interval9.699 g/LGeometric Coefficient of Variation 55.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 7, 3-Week Interval8.906 g/LGeometric Coefficient of Variation 67
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 10, 3-Week Interval8.661 g/LGeometric Coefficient of Variation 66.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 16, 3-Week Interval8.860 g/LGeometric Coefficient of Variation 68
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 19, 3-Week Interval8.687 g/LGeometric Coefficient of Variation 68.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 22, 3-Week Interval8.641 g/LGeometric Coefficient of Variation 64.3
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 25, 3-Week Interval8.573 g/LGeometric Coefficient of Variation 82.9
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 1, Week 28, 3-Week Interval8.845 g/LGeometric Coefficient of Variation 68.3
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 4, 3-Week Interval1.936 g/LGeometric Coefficient of Variation 105.6
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 7, 3-Week Interval1.859 g/LGeometric Coefficient of Variation 89.7
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 10, 3-Week Interval1.852 g/LGeometric Coefficient of Variation 83
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 16, 3-Week Interval1.964 g/LGeometric Coefficient of Variation 82.5
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 19, 3-Week Interval1.944 g/LGeometric Coefficient of Variation 82.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 2, Week 22, 3-Week Interval1.957 g/LGeometric Coefficient of Variation 89.1
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 10, 3-Week Interval0.2010 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 16, 3-Week Interval0.2280 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 19, 3-Week Interval0.2120 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 22, 3-Week Interval0.2230 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 25, 3-Week Interval0.2060 g/L
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Serum Trough Levels of IgG Subclasses (IgG1, IgG2, IgG3, and IgG4) After Administration of TAK-771IgG 4, Week 28, 3-Week Interval0.2390 g/L
Secondary

Epoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)

Time frame: Pre-infusion at Week 27 for participants with 4-Week or Week 25 with 3-Week dosing interval and post infusion at multiple time points up to Week 31 for participants with 4-Week dosing interval and up to Week 28 with 3-Week dosing interval.

Population: Pharmacokinetic analysis set included all enrolled participants who received investigational drug at least once, have had at least 1 evaluable serum IgG concentration, and no major protocol deviations or events that would affect the serum IgG concentration analysis results. Pharmacokinetic analysis set 2 included the analysis of PK parameters for total serum levels of IgG, for baseline-corrected total serum levels of IgG, and for IgG subclasses in Epoch 2.

ArmMeasureGroupValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)Total IgG6.94 days
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 1)3.92 days
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 2)3.92 days
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 3)2.99 days
Epoch 2: TAK-771 Full Dose Treatment PeriodEpoch 2: Time to Maximum Concentration (Tmax) of Total Serum Levels of IgG and IgG Subclasses (IgG1, IgG2, IgG3, and IgG4)IgG Subclass (IgG 4)3.88 days
Secondary

Healthcare Resource Utilization: Days Not Able To Attend School/Work or To Perform Normal Daily Activities Due to Illness/Infection

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodHealthcare Resource Utilization: Days Not Able To Attend School/Work or To Perform Normal Daily Activities Due to Illness/Infection0 number of days
Secondary

Healthcare Resource Utilization: Days on Antibiotics

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodHealthcare Resource Utilization: Days on Antibiotics0 number of days
Secondary

Healthcare Resource Utilization: Length of Stay in Days of Hospitalizations Due to Illness/Infection Per Participant Per Year

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodHealthcare Resource Utilization: Length of Stay in Days of Hospitalizations Due to Illness/Infection Per Participant Per Year0 hospitalization days/participant/year
Secondary

Healthcare Resource Utilization: Number of Acute (Urgent or Unscheduled) Physician Visits Due to Illness/Infection

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodHealthcare Resource Utilization: Number of Acute (Urgent or Unscheduled) Physician Visits Due to Illness/Infection1.74 Acute Physician Visits
Secondary

Healthcare Resource Utilization: Number of Hospitalizations Due to Illness/Infection Per Year

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodHealthcare Resource Utilization: Number of Hospitalizations Due to Illness/Infection Per Year0.22 hospitalizations per yearStandard Deviation 0.591
Secondary

Infusion Parameters in Epoch 2: Duration of Individual Infusions

End date and time of infusion in Epoch 2 - Start date and time of infusion in Epoch 2, for each infusion per participant.

Time frame: From Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (MEDIAN)
Epoch 2: TAK-771 Full Dose Treatment PeriodInfusion Parameters in Epoch 2: Duration of Individual Infusions74.0 minutes
Secondary

Infusion Parameters in Epoch 2: Infusion Volume Per Site

Infusion Volume per Site is scheduled Dose results from CRF / number of infusion sites/body.

Time frame: From Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2. Number analyzed are the number of participants with data available for analysis at given timepoint.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodInfusion Parameters in Epoch 2: Infusion Volume Per Site117.3 mL/siteStandard Deviation 77.73
Secondary

Infusion Parameters in Epoch 2: Maximum Infusion Rate Per Site

Maximum Infusion Rate results from CRF / number of infusion sites/body.

Time frame: From Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodInfusion Parameters in Epoch 2: Maximum Infusion Rate Per Site222.3 mL/hour per siteStandard Deviation 83.77
Secondary

Infusion Parameters in Epoch 2: Number of Infusion Sites Per Infusion

Total number of infusion sites injected in Epoch 2 / Total number of infusions administered in Epoch 2.

Time frame: From Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodInfusion Parameters in Epoch 2: Number of Infusion Sites Per Infusion1.77 infusion sites per infusionStandard Deviation 0.394
Secondary

Infusion Parameters in Epoch 2: Number of Infusion Sites Per Month

Total number of infusion sites injected in Epoch 2 / (duration of Epoch 2 / 30.4375), where duration of Epoch 2 is calculated as the end date of the Epoch 2 - the start date of the Epoch 2 + 1.

Time frame: From Week 7 up to Week 31 for Participants with 4-Week Dosing Interval or From Week 4 up to Week 28 for Participants with 3-Week Dosing Interval

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodInfusion Parameters in Epoch 2: Number of Infusion Sites Per Month2.02 infusion sites per monthStandard Deviation 0.514
Secondary

Percentage of Participants Who Experienced Tolerability Events Related to the Infusion of TAK-771

Tolerability events is defined as a case that the infusion rate is reduced, or that the infusion is interrupted or stopped, due to a TEAE related to TAK-771 infusion.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety Analysis Set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants Who Experienced Tolerability Events Related to the Infusion of TAK-7710 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants Who Experienced Tolerability Events Related to the Infusion of TAK-7710 percentage of participants
Secondary

Percentage of Participants With Clinically Significant Changes in Clinical Laboratory Parameters Recorded as TEAEs

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Clinically Significant Changes in Clinical Laboratory Parameters Recorded as TEAEs0 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Clinically Significant Changes in Clinical Laboratory Parameters Recorded as TEAEs0 percentage of participants
Secondary

Percentage of Participants With Clinically Significant Changes in Vital Signs and Body Weight Recorded as TEAEs

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Clinically Significant Changes in Vital Signs and Body Weight Recorded as TEAEs0 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Clinically Significant Changes in Vital Signs and Body Weight Recorded as TEAEs0 percentage of participants
Secondary

Percentage of Participants With Infusion-associated TEAEs

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Infusion-associated TEAEs37.5 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Infusion-associated TEAEs50.0 percentage of participants
Secondary

Percentage of Participants With Local and Systemic TEAEs

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureGroupValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Local and Systemic TEAEsLocal TEAEs43.8 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Local and Systemic TEAEsSystemic TEAEs75.0 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Local and Systemic TEAEsLocal TEAEs43.8 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Local and Systemic TEAEsSystemic TEAEs87.5 percentage of participants
Secondary

Percentage of Participants With Serious and Non-serious TEAEs

TEAEs are defined as AEs with onset after date-time of first dose of IP, or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP. Serious TEAE=any untoward clinical manifestation of signs, symptoms, outcomes (related to IP or not) at any dose: results in death, was life-threatening, requires inpatient/prolongation of hospitalization, resulted in persistent/significant disability/incapacity, congenital abnormality/birth defect, important medical event. AESI=investigator-reported hypersensitivity reactions, events of disordered coagulation as bleeding/hypercoagulable AESI.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureGroupValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Serious and Non-serious TEAEsSerious TEAEs6.3 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Serious and Non-serious TEAEsNon-serious TEAEs81.3 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Serious and Non-serious TEAEsSerious TEAEs6.3 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Serious and Non-serious TEAEsNon-serious TEAEs93.8 percentage of participants
Secondary

Percentage of Participants With Severe TEAEs

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Severe TEAEs0 Percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Severe TEAEs6.3 Percentage of participants
Secondary

Percentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEs

TEAEs are defined as AEs with onset after date-time of first dose of IP, or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureGroupValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEsTEAE Related56.3 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEsTEAE Non-Related62.5 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEsTEAE Related68.8 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TAK-771-Related and TAK-771-Non-Related TEAEsTEAE Non-Related81.3 percentage of participants
Secondary

Percentage of Participants With TEAEs Leading to Premature Discontinuation From Study

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TEAEs Leading to Premature Discontinuation From Study0 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With TEAEs Leading to Premature Discontinuation From Study0 percentage of participants
Secondary

Percentage of Participants With Treatment-Emergent Adverse Events (TEAEs)

TEAEs are defined as Adverse events (AEs) with onset after date-time of first dose of Investigational product (IP), or medical conditions present prior to the start of IP but increased in severity or relationship after date-time of first dose of IP.

Time frame: From Week 1 up to Week 31 for Participants with 4-Week Dosing Interval or up to Week 28 for Participants with 3-Week Dosing Interval

Population: Safety analysis set included all enrolled participants who received investigational drug at least once. Epoch 2 Safety Analysis Set included all participants who received investigational drug at least once in Epoch 2.

ArmMeasureValue (NUMBER)
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Treatment-Emergent Adverse Events (TEAEs)81.3 percentage of participants
Epoch 2: TAK-771 Full Dose Treatment PeriodPercentage of Participants With Treatment-Emergent Adverse Events (TEAEs)93.8 percentage of participants
Secondary

QOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index Score

The EQ-5D-3L is a standardized instrument for use as a measure of health outcome and was administered to all participants to assess the effect of the treatment on the participants' quality of life. Participants select answer for each of the following 3-level dimensions: 1) mobility; 2) self-care; 3) usual activities; 4) pain/discomfort; 5) anxiety/depression used to compute an index score ranging from 0 (worst imaginable health state) to 1 (best imaginable health state). An increase in the EQ-5D-3L index score indicates improvement.

Time frame: 4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once. Overall number analyzed is the number of participants with data available for analyses. Number analyzed is the number of participants available for analysis in the specified category.

ArmMeasureGroupValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreBaseline (Week 1), 2-11 years, EQ-5D index score, 4-week interval1.0000 score on a scaleStandard Deviation 0
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreBaseline (Week 1), 2-11 years, EQ-5D index score, 3-week interval0.6750 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreBaseline (Week 1), 12 years and older, EQ-5D index score, 4-week interval0.9271 score on a scaleStandard Deviation 0.12655
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreBaseline (Week 1), 12 years and older, EQ-5D index score, 3-week interval1 score on a scaleStandard Deviation 0
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreChange from Baseline (EOS/ET), 2-11 years, EQ-5D index score, 4-week interval0.0000 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreChange from Baseline (EOS/ET), 2-11 years, EQ-5D index score, 3-week interval0.3250 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreChange from Baseline (EOS/ET), 12 years and older, EQ-5D index score, 4-week interval0.0729 score on a scaleStandard Deviation 0.12655
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Index ScoreChange from Baseline (EOS/ET), 12 years and older, EQ-5D index score, 3-week interval0.0000 score on a scaleStandard Deviation 0
Secondary

QOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) Score

The EQ-5D-3L is a standardized instrument for use as a measure of health outcome and was administered to all participants to assess the effect of the treatment on the participants' quality of life. The EQ-5D-3L includes a visual analog scale (VAS), a vertical scale that allows the participants to indicate their health state that day, and ranges from 0 (worst imaginable) to 100 (best imaginable), with higher scores indicating better health state.

Time frame: 4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once. Overall number analyzed is the number of participants with data available for analyses. Number analyzed is the number of participants available for analysis in the specified category.

ArmMeasureGroupValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreBaseline (Week 1), 12 years and older, EQ-5D VAS score, 3-week interval85.0 score on a scaleStandard Deviation 7.07
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreBaseline (Week 1), 2-11 years, EQ-5D VAS score, 4-week interval95.0 score on a scaleStandard Deviation 7.07
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreBaseline (Week 1), 2-11 years, EQ-5D VAS score, 3-week interval100.0 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreBaseline (Week 1), 12 years and older, EQ-5D VAS score, 4-week interval76.3 score on a scaleStandard Deviation 13.24
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreChange from Baseline (EOS/ET), 2-11 years, EQ-5D VAS score, 4-week interval-5.0 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreChange from Baseline (EOS/ET), 2-11 years, EQ-5D VAS score, 3-week interval-10 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreChange from Baseline (EOS/ET), 12 years and older, EQ-5D VAS score, 4-week interval6.3 score on a scaleStandard Deviation 9.78
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: EuroQoL (Quality of Life)-5 Dimensions 3 Levels (EQ-5D-3L) Health Questionnaire Visual Analogue Scale (VAS) ScoreChange from Baseline (EOS/ET), 12 years and older, EQ-5D VAS score, 3-week interval-2.5 score on a scaleStandard Deviation 3.54
Secondary

QOL: Short Form-36 Health Survey Version 2 (SF-36 v2)

The SF-36 is a generic quality-of-life instrument that has been widely used to assess Health-Related Quality of Life (HR QoL) of participants. In this study, 14 years and older (participant as observer) for SF-36 health questionnaire will be analyzed. Generic instruments are used in general populations to assess a wide range of domains applicable to a variety of health states, conditions, and diseases. The SF-36 consists of 36 items that are aggregated into 8 multi-item scales (physical functioning, role - physical, bodily pain, general health, vitality, social functioning, role - emotional, and mental health), with scores ranging from 0 to 100. Higher scores indicate better HR QoL. Physical component summary (PCS).

Time frame: 4-Week Dosing Interval (Week 1 and Week 31); 3-Week Dosing Interval (Week 1 and Week 28)

Population: Epoch 2 Full Analysis Set included all participants who received investigational drug at least once in Epoch 2. Overall number analyzed is the number of participants with data available for analyses. Number analyzed is the number of participants available for analysis in the specified category.

ArmMeasureGroupValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), 14 years and older, Physical component summary (PCS) score, 4-week interval51.85 score on a scaleStandard Deviation 3.458
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), 14 years and older, Physical component summary (PCS) score, 3-week interval53.30 score on a scaleStandard Deviation 2.546
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), 14 years and older, Mental component summary (MCS) score 4-week interval51.38 score on a scaleStandard Deviation 14.06
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), >=14 years, Role/social component summary (RCS) score, 3-week interval53.50 score on a scaleStandard Deviation 8.768
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), 14 years and older, Mental component summary (MCS) score 3-week interval59.90 score on a scaleStandard Deviation 10.465
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Baseline (Week 1), >=14 years, Role/social component summary (RCS) score, 4-week interval49.67 score on a scaleStandard Deviation 8.495
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Physical component summary (PCS) score, 4-week interval0.20 score on a scaleStandard Deviation 8.709
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Physical component summary (PCS) score, 3-week interval-1.85 score on a scaleStandard Deviation 1.202
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Mental component summary (MCS) score 4-week interval-3.12 score on a scaleStandard Deviation 5.605
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Mental component summary (MCS) score 3-week interval-3.55 score on a scaleStandard Deviation 0.636
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Role/social component summary (RCS) score 4-week interval-0.80 score on a scaleStandard Deviation 6.592
Epoch 2: TAK-771 Full Dose Treatment PeriodQOL: Short Form-36 Health Survey Version 2 (SF-36 v2)Change from Baseline (EOS/ET), >=14 years, Role/social component summary (RCS) score,3-week interval4.90 score on a scaleStandard Deviation 3.394
Secondary

Quality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)

The PEDS-QL is a generic Health-Related Quality of Life (HR QoL) instrument designed specifically for a pediatric population. It captures the following domains: general health/activities, feelings/emotional, social functioning, school functioning. In this study, 2-7 years (parent as observer), 8-13 years (participant as observer) for PEDS-QL health questionnaire will be analyzed. Higher scores indicate better quality of life (QOL) for all domains of the PEDS-QL. This modular instrument uses a 5-point scale: from 0 (never) to 4 (almost always). Items are reversed scored and linearly transformed to a 0-100 scale as follows: 0=100, 1=75, 2=50, 3=25, 4=0. Four dimensions (physical, emotional, social, & school functioning) are scored.

Time frame: 4-Week Dosing Interval (Week 1 and Week 31); 3-Week Dosing Interval (Week 1 and Week 28)

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once. Overall number analyzed is the number of participants with data available for analyses. Number analyzed is the number of participants available for analysis in the specified category.

ArmMeasureGroupValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Baseline (Week 1), 2-7 years, Total score, 3-week interval76.09 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Baseline (Week 1), 2-7 years, Total score, 4-week interval93.48 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Baseline (Week 1), 8-13 years, Total score, 4-week interval77.17 score on a scaleStandard Deviation 18.091
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Change from Baseline (EOS/ET),2-7 years, Total score, 4-week interval2.17 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Change from Baseline (EOS/ET),2-7 years, Total score, 3-week interval11.96 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodQuality of Life (QOL): Pediatric Quality of Life Inventory (PEDS-QL)Change from Baseline (EOS/ET), 8-13 years, Total score, 4-week interval11.41 score on a scaleStandard Deviation 3.843
Secondary

Treatment Preference

Treatment preference questionnaire is a self-administered questionnaire developed to assess participants' preference towards the administration of new subcutaneous immunoglobulin (SCIG) therapy. There are 4-items on the questionnaire, which investigate a participant's preference on the clinic/hospital/home setting of receiving the immunoglobulin (IG) therapy, the participant's rating on the frequency and method of administration, and the participant's preference to continue receiving the IGSC treatment.

Time frame: Up to Week 31 for Participants with 4-Week Dosing Interval or Up to Week 28 for Participants with 3-Week Dosing Interval

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Before your participation in trial, where did you receive your IG therapy?=At hospital4 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, total time spent for my treatment per month=Like3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, ability to fit my treatment into my own schedule= Like3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Where do you prefer to receive your IG therapy? = At home7 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, frequency of administration=Like very much3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, potential to self-administer=Like8 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, The potential to self-administer = No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, potential to self-administer=Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ability to fit my treatment into my own schedule= Like7 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ability to fit my treatment into my own schedule= No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ability to fit my treatment into my own schedule= Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, overall convenience = Like8 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, overall convenience = No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, complexity of administration process=Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, complexity of administration process=Like1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, complexity of administration process=Dislike6 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, complexity of administration process=Dislike very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, My ability to self-administer without medical supervision = Dislike very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Before your participation in the trial, where did you receive your IG therapy?=At home2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Where do you prefer to receive your immunoglobulin therapy?=At hospital2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Where do you prefer to receive your IG therapy?=At home1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Where do you prefer to receive your IG therapy?=No Preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, frequency of administration=Like very much3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, frequency of administration=Like1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, Frequency of administration=No Preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, number of needlesticks per month=Like very much2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, number of needlesticks per month=Like2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, number of needlesticks per month=No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, total time spent for my treatment per month=No Preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, ease of administration= Like1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, ease of administration= No Preference3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, The ease of administration= Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, potential to self-administer=Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, potential to self-administer=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, potential to self-administer=Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, potential to self-administer=Dislike very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, ability to fit my treatment into my own schedule= No Preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, overall convenience=Like4 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, overall convenience=No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, amount of time administration takes=Like2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, amount of time administration takes=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, amount of time administration takes=Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, complexity of administration process=Like2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, complexity of administration process=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, complexity of administration process=Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, My ability to self-administer without medical supervision=Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, My ability to self-administer without medical supervision=No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, My ability to self-administer without medical supervision=Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, My ability to self-administer without medical supervision=Dislike very much2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference2-13 years, would you choose to continue receiving your treatment using IGg10% with rHuPH20 SC?=Yes5 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Before your participation, where did you receive your IG therapy?=At hospital8 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Before your participation, where did you receive your IG therapy?=At home7 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Before your participation, where did you receive your IG therapy?=Other1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Where do you prefer to receive your IG therapy? = At hospital2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, Where do you prefer to receive your IG therapy? = No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, frequency of administration=Like7 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, frequency of administration=No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, number of needlesticks per month=Like8 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, number of needlesticks per month=No preference3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, total time spent for my treatment per month = Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, total time spent for my treatment per month=Like6 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, total time spent for my treatment per month=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, total time spent for my treatment per month=Dislike2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ease of administration=Like2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ease of administration=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ease of administration=Dislike6 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ease of administration=Dislike very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, potential to self-administer=Dislike very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, ability to fit my treatment into my own schedule= Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, overall convenience = Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, amount of time administration takes = Like7 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, amount of time administration takes = No preference3 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, amount of time administration takes = Dislike1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, complexity of administration process=No preference2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, My ability to self-administer without medical supervision=Like very much1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, My ability to self-administer without medical supervision=Like6 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, My ability to self-administer without medical supervision = No preference1 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, My ability to self-administer without medical supervision = Dislike2 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, choose to continue receiving your treatment using IGg 10% with rHuPH20 SC?=Yes9 Participants
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Preference14 years and older, choose to continue receiving your treatment using IGg 10% with rHuPH20 SC?= No2 Participants
Secondary

Treatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)

Treatment Satisfaction Questionnaire for Medication (TSQM) is a global satisfaction scale used to assess the overall level of participant's satisfaction or dissatisfaction with their medications. In this study, 2-12 years (parent as observer), 13 years and older (participant as observer) for TSQM health questionnaire will be analyzed. TSQM-9 is a 9-item, validated, self-administered instrument used to assess participant's satisfaction with medication. The three domains assessed are effectiveness, convenience, and global satisfaction. The score of each of the 3 domains is based on an algorithm to create a score of 0 to 100. Higher score indicated greater satisfaction in that domain.

Time frame: 4-Week dosing interval (Week 1 and Week 31); 3-Week dosing interval (Week 1 and Week 28)

Population: Full Analysis Set included all enrolled participants who received investigational drug at least once. Overall number analyzed is the number of participants with data available for analyses. Number analyzed is the number of participants with data available for analysis at given timepoint.

ArmMeasureGroupValue (MEAN)Dispersion
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Effectiveness, 3-week interval94.44 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Convenience, 4-week interval44.44 score on a scaleStandard Deviation 19.245
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Global satisfaction, 4-week interval59.52 score on a scaleStandard Deviation 10.911
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Convenience, 3-week interval44.44 score on a scaleStandard Deviation 0
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Effectiveness, 3-week interval-27.78 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Convenience, 4-week interval13.89 score on a scaleStandard Deviation 3.928
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Effectiveness, 4-week interval64.81 score on a scaleStandard Deviation 3.208
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Convenience, 3-week interval38.89 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 2-12 years, Global satisfaction, 3-week interval100.00 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Effectiveness, 4-week interval64.81 score on a scaleStandard Deviation 18.812
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Effectiveness, 3-week interval63.89 score on a scaleStandard Deviation 3.928
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Convenience, 4-week interval62.04 score on a scaleStandard Deviation 19.694
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Global satisfaction, 4-week interval60.71 score on a scaleStandard Deviation 8.748
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Baseline (Week 1), 13 years and older, Global satisfaction, 3-week interval64.29 score on a scaleStandard Deviation 10.102
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Effectiveness, 4-week interval0.00 score on a scaleStandard Deviation 0
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Convenience, 3-week interval0.00 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Global satisfaction, 4-week interval10.71 score on a scaleStandard Deviation 5.051
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 2-12 years, Global satisfaction, 3-week interval-28.57 score on a scale
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Effectiveness, 4-week interval-12.04 score on a scaleStandard Deviation 26.156
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Effectiveness, 3-week interval2.78 score on a scaleStandard Deviation 3.928
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Convenience, 4-week interval-3.70 score on a scaleStandard Deviation 20.688
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Convenience, 3-week interval0.00 score on a scaleStandard Deviation 7.857
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Global satisfaction, 4-week interval-13.10 score on a scaleStandard Deviation 26.885
Epoch 2: TAK-771 Full Dose Treatment PeriodTreatment Satisfaction: Questionnaire for Medication-9 (TSQM-9)Change from Baseline (EOS/ET), 13 years and older, Global satisfaction, 3-week interval-3.57 score on a scaleStandard Deviation 5.051

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026