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Retrospective Chart Review Study of Patients With PIK3CA-Related Overgrowth Spectrum Who Have Received Alpelisib

Retrospective Chart Review Study of Patients With PIK3CA-Related Overgrowth Spectrum (PROS) Who Have Received Alpelisib as Part of a Compassionate Use Program (EPIK-P1)

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04285723
Acronym
EPIK-P1
Enrollment
57
Registered
2020-02-26
Start date
2020-06-09
Completion date
2021-04-16
Last updated
2023-02-09

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

Conditions

PIK3CA-Related Overgrowth Spectrum (PROS)

Keywords

alpelisib, PIK3CA, BYL719, PROS, Retrospective chart review study, EPIK-P1

Brief summary

The study was a site-based retrospective non-interventional medical chart review of pediatric and adult male and female patients with PIK3CA-Related Overgrowth Spectrum (PROS) who initiated alpelisib at least 24 weeks before the cut-off date at a MAP site. The study cut-off date was 09-Mar-2020. Patient-level data were abstracted from medical charts of all eligible patients at all participating sites. Study completion date refers to the last date data was extracted. Information from patients treated with alpelisib was used to describe the efficacy and safety of alpelisib in PROS patients.

Detailed description

The index date (baseline) is defined as the date of alpelisib initiation. The study period is the period from the index date up to the most recent data available at the time of the cut-off date. The maximum follow-up was 187 weeks.

Interventions

OTHERalpelisib

Retrospective observational case-only study. There is no treatment allocation. Patients with severe or life-threatening PROS who have received alpelisib as part of a compassionate use program were invited to participate.

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
RETROSPECTIVE

Eligibility

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

Inclusion criteria

* Patient (adult or pediatric) is ≥ 2 years of age * Patient has a physician confirmed/documented diagnosis of PROS * Patient has a documented evidence of a mutation in the PIK3CA gene * Patient's condition was assessed by the treating physician as severe or life threatening and treatment was deemed necessary * Patient has been treated with at least one dose of alpelisib, initiated on or before 23-Sep-2019 (i.e. at least 24 weeks before the cut-off date of the 09-Mar-2020) * Patient has medical chart history available during enrollment in the Novartis MAP * Patient (or parent/guardian in case of pediatric patient) consented to participate in the study (as required by local ethics regulations) Inclusion criteria for MAP enrollment (assessed at the time of alpelisib initiation)

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Patients Responders and Non-responders at Week 24Index date and week 24 or 6 months (± 4 weeks)Response is defined by achieving at least 20% reduction from index date in the sum of measurable target lesion volume (1 to 3 lesions, via central review of imaging scans), provided that none of the individual target lesions have ≥ 20% increase from index date and in absence of progression of non-target lesions and without new lesions.

Secondary

MeasureTime frameDescription
Percent Change in the Sum of All Measurable Lesion VolumeIndex date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)Percent change in the sum of all measurable (target and non-target) lesion volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date (baseline) was defined as the date of alpelisib initiation. End of study: patients were followed up to a maximum of 187 weeks As no measurable non-target lesions were identified, the results for changes in the sum of all measurable (target and non-target) lesion volume were identical to the results presented for measurable target lesion.
Percent Change in the Sum of All Measurable Non-target Lesion VolumeIndex date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)Percent change in the sum of all measurable non-target lesion volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date (baseline) was defined as the date of alpelisib initiation.
Mean Duration of Response (DoR)Up to 187 weeksDuration of response is defined as the time from first documented response, to the date of the first documented disease progression or death due to any cause. Response is defined by achieving at least 20% reduction from index date in the sum of measurable target lesion volume (1 to 3 lesions, via central review of imaging scans), provided that none of the individual target lesions have ≥ 20% increase from index date and in absence of progression of non-target lesions and without new lesions. Disease progression is defined as an increase of any individual target lesions of ≥ 20% in volume from previous assessment, progression of non-target PIK3CA Related Overgrowth Spectrum (PROS) lesions or appearance of a new PROS lesion.
Reasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsUp to 187 weeksNumber of participants with concomitant PIK3CA Related Overgrowth Spectrum (PROS)-related non-drug treatments and other medical interventions by reason for discontinuation. A patient may have multiple information, but was counted only once in type of other supportive non-drug treatment if more than one type in this category has been reported.
Participants With Concomitant PROS-related Medications Over TimeIndex date, week 24 and end of studyNumber of participants with at least one concomitant utilization of PIK3CA Related Overgrowth Spectrum (PROS)-related medication. End of study: patients were followed up to a maximum of 187 weeks. Results are provided for the full study population as planned and documented in the protocol and SAP, and not by age group.
Number of PROS-related Completed Surgeries During the Study PeriodUp to 187 weeksNumber of surgeries by reason of surgery. A patient may have multiple anatomical sites of surgery and types of surgery on the same day.
Number of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsIndex date and week 24 or 6 months (± 4 weeks)Improvement in PIK3CA Related Overgrowth Spectrum (PROS) signs and symptoms was defined based on Common Toxicity Criteria (CTC) grade reduction or resolution of the event from index date. CTC is a set of criteria for the standardized classification of adverse effects of drugs used in cancer therapy. The Common Terminology Criteria for Adverse Events (CTCAE) system is a product of the US National Cancer Institute (NCI). For this study, version 4.03 was used
Change in Performance Status ScoreIndex date and week 24 or 6 months (± 4 weeks)Participants with a change in performance status score (ECOG, Karnofsky, Lansky) between the index date and week 24. Patients completed one questionnaire (ECOG, Karnofsky or Lansky) based on physicians choice. The Eastern Cooperative Oncology Group (ECOG) score runs from 0 to 5, with 0 denoting perfect health and 5 death. The Karnofsky Performance Score (KPS) and Lansky score run from 0 to 100, where 0 is death and 100 is perfect health. For the ECOG scale, improvement is defined as a decrease by at least 1 point and and worsening is defined as an increase by at least 1 point. For the Karnofsky and Lansky scale, improvement is defined as an increase by at least 20 points and worsening is defined as a decrease by at least 20 points. If neither of the criteria for improvement or worsening is met, then it is considered stable.
Functional Status - Mobility AssessmentUp to 187 weeksChange in functional status: Mobility severity assessment measured up to the judgment of the investigator. A patient may have multiple information
Percent Change in the Sum of Measurable Target Lesion VolumeIndex date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)Percent change in the sum of measurable target lesion (1 to 3 lesions) volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date: (baseline) was defined as the date of alpelisib initiation End of study: patients were followed up to a maximum of 187 weeks.
Change From Index Date in Functional Status - Work StatusIndex date, week 24 and end of studyChange in functional status: Work status assessment during the study period (no attendance, part-time, full-time or unemployed). Improvement is defined as a shift from reporting of No attendance to Part-time or Full time, from Part-time to Full-time, as well as from Unemployed to Part-time or Full-time work. Worsening is defined as a shift from reporting of Part-time to No attendance, Full-time to Part-time or No attendance as well as Part-time or Full-time to Unemployed status. Change in score is only applicable if both index date and post-index date information are available. If a patient has more than 1 score reported within the same time window, the worst is considered. If neither of the criteria for improvement or worsening is met, then it is considered stable.
Health Resource Utilization (HRU) - Number of Hospitalizations Per PatientUp to 187 weeksHospitalizations starting on or after the start of study treatment (index date) or starting prior to and continuing after the start of study treatment are summarized.
Number of Patients With Grade 3/4 on Laboratory Assessments: HematologyUp to 187 weeksWorst post-index date hematology abnormalities based on Common Toxicity Criteria (CTC) grades during the study period. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated. Patients are counted only for the worst grade observed post-index date values. Laboratory assessments performed more than 30 days after last study treatment administration date are not summarized.
Number of Patients With Grade 3/4 on Clinical Assessments - Clinical Chemistry187 weeksWorst post-index date biochemistry abnormalities based on Common Toxicity Criteria (CTC) grades. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated. Patients are counted only for the worst grade observed post-index date values. Laboratory assessments performed more than 30 days after last study treatment administration date are not summarized.
Notable Vital Sign Values During the Study Period - Pediatric PatientsEnd of study (up to week 187)Low/High: Indicating abnormal value/change from index date. High systolic blood pressure: ≥95th percentile of the age and height group Low Systolic blood pressure: ≤5th percentile of the age and height group. High diastolic blood pressure: ≥95th percentile of the age and height group Low diastolic blood pressure: ≤5th percentile of the age and height group. High pulse rate (bpm): 2-3 years: \>128; 3-4 years: \>123; 4-6 years: \>117; 6-8 years: \>111; 8-12years: \>103; 12-15 years: \>96; ≥15 years: \>92 Low pulse rate (bpm): 2-3 years: \<92; 3-4 years: \<86; 4-6 years: \<81; 6-8 years: \<74; 8-12 years: \<67; 12-15 years: \<62; ≥15 years: \<58. High weight: increase from baseline of ≥2 Body mass index (BMI) for age percentile categories Low weight: decrease from baseline of ≥2 BMI-for-age percentile categories
Notable Vital Sign Values During the Study Period - Adult PatientsEnd of study (up to week 187)Low/High: Indicating abnormal value/change from index date. High systolic blood pressure: ≥180 mmHg and increase ≥20 mmHg Low systolic blood pressure: ≤90 mmHg and decrease ≥20 mmHg. High diastolic blood pressure: ≥105 mmHg and increase ≥15 mmHg Low diastolic blood pressure: ≤50 mmHg and decrease ≥15 mmHg. High pulse rate: ≥120 bpm and increase ≥15 bpm Low pulse rate: ≤ 50 bpm and decrease ≥15 bpm. High weight: Increase ≥10% Low weight: Decrease ≥10%
Number of Participants With Notable ECG Values.Up to week 187Notable Electrocardiogram (ECG) values during the study period
Growth and Development in Pediatric PopulationWeek 24 or 6 months (± 4 weeks)Assessed in patients who were aged \<18 years at the time of alpelisib initiation. SDS (standard deviation scores) for height and BMI are obtained from the WHO Growth Charts, and SDS for height and weight velocity are obtained from Baumgartner et al. (1986). Height or weight velocity is a variable derived from the measurement of height or weight at different times and represents the increase in height or weight during a fixed period. SD- scores are used to describe how far a measurement is from the median (average). Weight-for-age reference data are not available beyond age 10.
Overview of Number of Patients With Adverse Events (AEs)Up to 187 weeksA patient with multiple severity grades for an AE is only counted under the maximum grade. All grades includes any AEs with missing grade. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated.
Change From Index Date in Functional Status - School Status During the Study PeriodIndex date, week 24 and end of study (up to 187 weeks)Change in functional status: School status during the study period (no attendance, part-time or full time). Improvement is defined as a shift from reporting of No attendance to Part-time as well as , Part-time or No attendance to Full-time; Worsening is defined as a shift from reporting of Part-time to No attendance, as well as from Full-time to Part-time or No attendance. If neither of the criteria for improvement or worsening is met, then it is considered stable.

Countries

Australia, France, Ireland, Spain, United States

Participant flow

Recruitment details

Participants were from Australia (1), France (50), Ireland (1), Spain (3) and United States (2)

Participants by arm

ArmCount
Pediatric Patients
Pediatric patients (\< 18 years) treated with alpelisib
39
Adult Patients
Adult patients (\>= 18 years) treated with alpelisib
18
Total57

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyNo efficiency10
Overall StudyPhysician Decision10
Overall StudySubject decision12

Baseline characteristics

CharacteristicPediatric PatientsAdult PatientsTotal
Age, Continuous9.9 years
STANDARD_DEVIATION 4.84
27.8 years
STANDARD_DEVIATION 8.34
15.5 years
STANDARD_DEVIATION 10.39
Race/Ethnicity, Customized
Not reported
32 Participants18 Participants50 Participants
Race/Ethnicity, Customized
White
7 Participants0 Participants7 Participants
Sex: Female, Male
Female
24 Participants9 Participants33 Participants
Sex: Female, Male
Male
15 Participants9 Participants24 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 390 / 18
other
Total, other adverse events
23 / 3916 / 18
serious
Total, serious adverse events
10 / 3911 / 18

Outcome results

Primary

Percentage of Patients Responders and Non-responders at Week 24

Response is defined by achieving at least 20% reduction from index date in the sum of measurable target lesion volume (1 to 3 lesions, via central review of imaging scans), provided that none of the individual target lesions have ≥ 20% increase from index date and in absence of progression of non-target lesions and without new lesions.

Time frame: Index date and week 24 or 6 months (± 4 weeks)

Population: Efficacy population: It is a subset of the Full study population. It included patients with at least one target lesion and with an imaging scan performed on the index date (or up to 24 weeks prior to the index date) for at least one target lesion.

ArmMeasureGroupValue (NUMBER)
Pediatric PatientsPercentage of Patients Responders and Non-responders at Week 24Responders30.4 Percentage of participants
Pediatric PatientsPercentage of Patients Responders and Non-responders at Week 24Non Responders69.6 Percentage of participants
Adult PatientsPercentage of Patients Responders and Non-responders at Week 24Responders55.6 Percentage of participants
Adult PatientsPercentage of Patients Responders and Non-responders at Week 24Non Responders44.4 Percentage of participants
Secondary

Change From Index Date in Functional Status - School Status During the Study Period

Change in functional status: School status during the study period (no attendance, part-time or full time). Improvement is defined as a shift from reporting of No attendance to Part-time as well as , Part-time or No attendance to Full-time; Worsening is defined as a shift from reporting of Part-time to No attendance, as well as from Full-time to Part-time or No attendance. If neither of the criteria for improvement or worsening is met, then it is considered stable.

Time frame: Index date, week 24 and end of study (up to 187 weeks)

Population: Full study population: included all patients who satisfied the study inclusion criteria.~Only patients reporting school status at index date were included in the calculation of change

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksImprovement1 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksStable28 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksmissing0 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksWorsening0 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyImprovement2 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyStable27 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studymissing0 Participants
Pediatric PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyWorsening0 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyWorsening0 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksImprovement0 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyImprovement2 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksStable4 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studymissing0 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksmissing0 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodEnd of studyStable2 Participants
Adult PatientsChange From Index Date in Functional Status - School Status During the Study PeriodChange 24 weeksWorsening0 Participants
Secondary

Change From Index Date in Functional Status - Work Status

Change in functional status: Work status assessment during the study period (no attendance, part-time, full-time or unemployed). Improvement is defined as a shift from reporting of No attendance to Part-time or Full time, from Part-time to Full-time, as well as from Unemployed to Part-time or Full-time work. Worsening is defined as a shift from reporting of Part-time to No attendance, Full-time to Part-time or No attendance as well as Part-time or Full-time to Unemployed status. Change in score is only applicable if both index date and post-index date information are available. If a patient has more than 1 score reported within the same time window, the worst is considered. If neither of the criteria for improvement or worsening is met, then it is considered stable.

Time frame: Index date, week 24 and end of study

Population: Full study population: included all patients who satisfied the study inclusion criteria.~Only adult patients reporting work status at index date were included in the calculation of change.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange 24 weeksImprovement0 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange 24 weeksWorsening1 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange 24 weeksStable6 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange 24 weeksMissing1 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange end of studyImprovement5 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange end of studyWorsening0 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange end of studyStable2 Participants
Pediatric PatientsChange From Index Date in Functional Status - Work StatusChange end of studyMissing1 Participants
Secondary

Change in Performance Status Score

Participants with a change in performance status score (ECOG, Karnofsky, Lansky) between the index date and week 24. Patients completed one questionnaire (ECOG, Karnofsky or Lansky) based on physicians choice. The Eastern Cooperative Oncology Group (ECOG) score runs from 0 to 5, with 0 denoting perfect health and 5 death. The Karnofsky Performance Score (KPS) and Lansky score run from 0 to 100, where 0 is death and 100 is perfect health. For the ECOG scale, improvement is defined as a decrease by at least 1 point and and worsening is defined as an increase by at least 1 point. For the Karnofsky and Lansky scale, improvement is defined as an increase by at least 20 points and worsening is defined as a decrease by at least 20 points. If neither of the criteria for improvement or worsening is met, then it is considered stable.

Time frame: Index date and week 24 or 6 months (± 4 weeks)

Population: Full study population: included all patients who satisfied the study inclusion criteria.~Only patients with performance status (ECOG, Karnofsky, Lansky) assessed at the index date were included in the calculation of change

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsChange in Performance Status ScoreStable9 Participants
Pediatric PatientsChange in Performance Status ScoreImproved8 Participants
Pediatric PatientsChange in Performance Status ScoreWorsened0 Participants
Pediatric PatientsChange in Performance Status ScoreNot reported16 Participants
Adult PatientsChange in Performance Status ScoreNot reported7 Participants
Adult PatientsChange in Performance Status ScoreStable1 Participants
Adult PatientsChange in Performance Status ScoreWorsened0 Participants
Adult PatientsChange in Performance Status ScoreImproved6 Participants
Secondary

Functional Status - Mobility Assessment

Change in functional status: Mobility severity assessment measured up to the judgment of the investigator. A patient may have multiple information

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria.~Only patients with at least one mobility assessment were included in the severity assessment.

ArmMeasureCategoryValue (COUNT_OF_UNITS)
Pediatric PatientsFunctional Status - Mobility AssessmentMild impairment0 Affected regions
Pediatric PatientsFunctional Status - Mobility AssessmentSevere impairment0 Affected regions
Pediatric PatientsFunctional Status - Mobility AssessmentModerate impairment1 Affected regions
Pediatric PatientsFunctional Status - Mobility AssessmentMissing0 Affected regions
Pediatric PatientsFunctional Status - Mobility AssessmentNo impairment0 Affected regions
Adult PatientsFunctional Status - Mobility AssessmentMissing1 Affected regions
Adult PatientsFunctional Status - Mobility AssessmentNo impairment1 Affected regions
Adult PatientsFunctional Status - Mobility AssessmentMild impairment1 Affected regions
Adult PatientsFunctional Status - Mobility AssessmentModerate impairment2 Affected regions
Adult PatientsFunctional Status - Mobility AssessmentSevere impairment1 Affected regions
Secondary

Growth and Development in Pediatric Population

Assessed in patients who were aged \<18 years at the time of alpelisib initiation. SDS (standard deviation scores) for height and BMI are obtained from the WHO Growth Charts, and SDS for height and weight velocity are obtained from Baumgartner et al. (1986). Height or weight velocity is a variable derived from the measurement of height or weight at different times and represents the increase in height or weight during a fixed period. SD- scores are used to describe how far a measurement is from the median (average). Weight-for-age reference data are not available beyond age 10.

Time frame: Week 24 or 6 months (± 4 weeks)

Population: Full study population: included all pediatric patients who satisfied the study inclusion criteria. Only patients with SD-score available are included.

ArmMeasureGroupValue (MEAN)Dispersion
Pediatric PatientsGrowth and Development in Pediatric PopulationWeight velocity SDS-0.2 SD-scoreStandard Deviation 2.86
Pediatric PatientsGrowth and Development in Pediatric PopulationHeight SDS-0.1 SD-scoreStandard Deviation 1.23
Pediatric PatientsGrowth and Development in Pediatric PopulationHeight velocity SDS0.1 SD-scoreStandard Deviation 5.01
Pediatric PatientsGrowth and Development in Pediatric PopulationBMI SDS0.8 SD-scoreStandard Deviation 1.21
Secondary

Health Resource Utilization (HRU) - Number of Hospitalizations Per Patient

Hospitalizations starting on or after the start of study treatment (index date) or starting prior to and continuing after the start of study treatment are summarized.

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria.

ArmMeasureGroupValue (MEAN)Dispersion
Pediatric PatientsHealth Resource Utilization (HRU) - Number of Hospitalizations Per PatientNumber of times a patient has been hospitalized1.8 Number of hospitalizationsStandard Deviation 1.03
Pediatric PatientsHealth Resource Utilization (HRU) - Number of Hospitalizations Per PatientNumber of times a patient has been hospitalized due to PROS1.1 Number of hospitalizationsStandard Deviation 0.35
Adult PatientsHealth Resource Utilization (HRU) - Number of Hospitalizations Per PatientNumber of times a patient has been hospitalized1.7 Number of hospitalizationsStandard Deviation 0.82
Adult PatientsHealth Resource Utilization (HRU) - Number of Hospitalizations Per PatientNumber of times a patient has been hospitalized due to PROS1.0 Number of hospitalizationsStandard Deviation 0
Secondary

Mean Duration of Response (DoR)

Duration of response is defined as the time from first documented response, to the date of the first documented disease progression or death due to any cause. Response is defined by achieving at least 20% reduction from index date in the sum of measurable target lesion volume (1 to 3 lesions, via central review of imaging scans), provided that none of the individual target lesions have ≥ 20% increase from index date and in absence of progression of non-target lesions and without new lesions. Disease progression is defined as an increase of any individual target lesions of ≥ 20% in volume from previous assessment, progression of non-target PIK3CA Related Overgrowth Spectrum (PROS) lesions or appearance of a new PROS lesion.

Time frame: Up to 187 weeks

Population: Efficacy population: It is a subset of the Full study population. This analysis only applied to responders with documented disease progression or death due to any cause.

Secondary

Notable Vital Sign Values During the Study Period - Adult Patients

Low/High: Indicating abnormal value/change from index date. High systolic blood pressure: ≥180 mmHg and increase ≥20 mmHg Low systolic blood pressure: ≤90 mmHg and decrease ≥20 mmHg. High diastolic blood pressure: ≥105 mmHg and increase ≥15 mmHg Low diastolic blood pressure: ≤50 mmHg and decrease ≥15 mmHg. High pulse rate: ≥120 bpm and increase ≥15 bpm Low pulse rate: ≤ 50 bpm and decrease ≥15 bpm. High weight: Increase ≥10% Low weight: Decrease ≥10%

Time frame: End of study (up to week 187)

Population: Full study population: included all patients who satisfied the study inclusion criteria. Only adult patients were included in this analysis

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Systolic blood pressure17 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Systolic blood pressure3 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Diastolic blood pressure12 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Diastolic blood pressure2 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Pulse rate15 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Pulse rate10 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Weight0 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Weight1 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Weight6 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Systolic blood pressure0 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Pulse rate1 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Systolic blood pressure0 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Weight0 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsHigh Diastolic blood pressure2 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Pulse rate0 Participants
Adult PatientsNotable Vital Sign Values During the Study Period - Adult PatientsLow Diastolic blood pressure0 Participants
Secondary

Notable Vital Sign Values During the Study Period - Pediatric Patients

Low/High: Indicating abnormal value/change from index date. High systolic blood pressure: ≥95th percentile of the age and height group Low Systolic blood pressure: ≤5th percentile of the age and height group. High diastolic blood pressure: ≥95th percentile of the age and height group Low diastolic blood pressure: ≤5th percentile of the age and height group. High pulse rate (bpm): 2-3 years: \>128; 3-4 years: \>123; 4-6 years: \>117; 6-8 years: \>111; 8-12years: \>103; 12-15 years: \>96; ≥15 years: \>92 Low pulse rate (bpm): 2-3 years: \<92; 3-4 years: \<86; 4-6 years: \<81; 6-8 years: \<74; 8-12 years: \<67; 12-15 years: \<62; ≥15 years: \<58. High weight: increase from baseline of ≥2 Body mass index (BMI) for age percentile categories Low weight: decrease from baseline of ≥2 BMI-for-age percentile categories

Time frame: End of study (up to week 187)

Population: Full study population: included all patients who satisfied the study inclusion criteria. Only pediatric patients were included in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsLow Systolic blood pressure3 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsHigh Systolic blood pressure17 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsHigh Diastolic blood pressure12 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsLow Diastolic blood pressure2 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsHigh Pulse rate15 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsLow Pulse rate10 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsHigh Weight0 Participants
Pediatric PatientsNotable Vital Sign Values During the Study Period - Pediatric PatientsLow Weight1 Participants
Secondary

Number of Participants With Notable ECG Values.

Notable Electrocardiogram (ECG) values during the study period

Time frame: Up to week 187

Population: Full study population: included all patients who satisfied the study inclusion criteria. Only patients with ECG data are included in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNumber of Participants With Notable ECG Values.QTcF New >450 to <=480 ms1 Participants
Pediatric PatientsNumber of Participants With Notable ECG Values.QT Increase >30 to <=60 ms1 Participants
Pediatric PatientsNumber of Participants With Notable ECG Values.QT New >480 to <=500 ms0 Participants
Adult PatientsNumber of Participants With Notable ECG Values.QT New >480 to <=500 ms1 Participants
Adult PatientsNumber of Participants With Notable ECG Values.QTcF New >450 to <=480 ms1 Participants
Adult PatientsNumber of Participants With Notable ECG Values.QT Increase >30 to <=60 ms0 Participants
Secondary

Number of Patients With Grade 3/4 on Clinical Assessments - Clinical Chemistry

Worst post-index date biochemistry abnormalities based on Common Toxicity Criteria (CTC) grades. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated. Patients are counted only for the worst grade observed post-index date values. Laboratory assessments performed more than 30 days after last study treatment administration date are not summarized.

Time frame: 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryGamma Glutamyl Transferase Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryGlucose Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCalcium Corrected Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryMagnesium Increase - Grade 3/41 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlbumin Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryMagnesium Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCalcium Corrected Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPhosphate Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAspartate Aminotransferase Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPotassium Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCholesterol Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPotassium Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlanine Aminotransferase Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistrySodium Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCreatine Kinase Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistrySodium Decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryBilirubin Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryTriglycerides Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCreatinine Increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryUrate Increase - Grade 3/41 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlkaline Phosphatase Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryUrate Increase - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlanine Aminotransferase Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlbumin Decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAlkaline Phosphatase Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryAspartate Aminotransferase Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryBilirubin Increase - Grade 3/42 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCalcium Corrected Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCalcium Corrected Decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCholesterol Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCreatine Kinase Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryCreatinine Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryGlucose Increase - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryMagnesium Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryMagnesium Decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPhosphate Decrease - Grade 3/42 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPotassium Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryPotassium Decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistrySodium Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistrySodium Decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryTriglycerides Increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Clinical Assessments - Clinical ChemistryGamma Glutamyl Transferase Increase - Grade 3/40 Participants
Secondary

Number of Patients With Grade 3/4 on Laboratory Assessments: Hematology

Worst post-index date hematology abnormalities based on Common Toxicity Criteria (CTC) grades during the study period. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated. Patients are counted only for the worst grade observed post-index date values. Laboratory assessments performed more than 30 days after last study treatment administration date are not summarized.

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyPlatelets, decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyActivated partial thromboplastin time, increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyFibrinogen, decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyHemoglobin, decrease - Grade 3/42 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLeukocytes, increase - Grade 3/41 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLeukocytes, decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLymphocytes, increase - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLymphocytes, decrease - Grade 3/40 Participants
Pediatric PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyNeutrophils, decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLymphocytes, decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLeukocytes, decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyActivated partial thromboplastin time, increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyPlatelets, decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyFibrinogen, decrease - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLymphocytes, increase - Grade 3/40 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyHemoglobin, decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyNeutrophils, decrease - Grade 3/41 Participants
Adult PatientsNumber of Patients With Grade 3/4 on Laboratory Assessments: HematologyLeukocytes, increase - Grade 3/40 Participants
Secondary

Number of Patients With Improvement in Most Frequent PROS-related Signs and Symptoms

Improvement in PIK3CA Related Overgrowth Spectrum (PROS) signs and symptoms was defined based on Common Toxicity Criteria (CTC) grade reduction or resolution of the event from index date. CTC is a set of criteria for the standardized classification of adverse effects of drugs used in cancer therapy. The Common Terminology Criteria for Adverse Events (CTCAE) system is a product of the US National Cancer Institute (NCI). For this study, version 4.03 was used

Time frame: Index date and week 24 or 6 months (± 4 weeks)

Population: Full study population: included all patients who satisfied the study inclusion criteria. For the assessment of improvement for the individual items, only patients with the symptom at the index date were included.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsVascular malformation improved by week 2420 Participants
Pediatric PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsLimb asymmetry improved by week 2411 Participants
Pediatric PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsDisseminated intravascular coagulation improved by week 2411 Participants
Pediatric PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsPain improved by week 2411 Participants
Pediatric PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsFatigue improved by week 2422 Participants
Adult PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsPain improved by week 249 Participants
Adult PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsFatigue improved by week 2410 Participants
Adult PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsVascular malformation improved by week 2410 Participants
Adult PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsDisseminated intravascular coagulation improved by week 245 Participants
Adult PatientsNumber of Patients With Improvement in Most Frequent PROS-related Signs and SymptomsLimb asymmetry improved by week 249 Participants
Secondary

Number of PROS-related Completed Surgeries During the Study Period

Number of surgeries by reason of surgery. A patient may have multiple anatomical sites of surgery and types of surgery on the same day.

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria.

ArmMeasureGroupValue (NUMBER)
Pediatric PatientsNumber of PROS-related Completed Surgeries During the Study PeriodOther4 Surgeries
Pediatric PatientsNumber of PROS-related Completed Surgeries During the Study PeriodDisease improvement2 Surgeries
Pediatric PatientsNumber of PROS-related Completed Surgeries During the Study PeriodDisease progression (not radiologically confirmed)3 Surgeries
Adult PatientsNumber of PROS-related Completed Surgeries During the Study PeriodOther2 Surgeries
Adult PatientsNumber of PROS-related Completed Surgeries During the Study PeriodDisease improvement1 Surgeries
Adult PatientsNumber of PROS-related Completed Surgeries During the Study PeriodDisease progression (not radiologically confirmed)0 Surgeries
Secondary

Overview of Number of Patients With Adverse Events (AEs)

A patient with multiple severity grades for an AE is only counted under the maximum grade. All grades includes any AEs with missing grade. Grade refers to the severity of the AE: Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activities of daily living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care activities of daily living. Grade 4 Life-threatening consequences; urgent intervention indicated.

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs - All grades10 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose interruption - All grades2 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs - Grade ≥ 33 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose interruption - Grade ≥ 30 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)Adverse events - Grade ≥ 34 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to treatment discontinuation0 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose reduction - All grades0 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs treatment-related - All grades0 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)Adverse events - All grades31 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs treatment-related - Grade ≥ 30 Participants
Pediatric PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose reduction - Grade ≥ 30 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs treatment-related - Grade ≥ 31 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)Adverse events - All grades16 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)Adverse events - Grade ≥ 39 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs - Grade ≥ 39 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose reduction - All grades3 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose reduction - Grade ≥ 30 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose interruption - All grades3 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to dose interruption - Grade ≥ 32 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)AEs leading to treatment discontinuation0 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs treatment-related - All grades3 Participants
Adult PatientsOverview of Number of Patients With Adverse Events (AEs)SAEs - All grades11 Participants
Secondary

Participants With Concomitant PROS-related Medications Over Time

Number of participants with at least one concomitant utilization of PIK3CA Related Overgrowth Spectrum (PROS)-related medication. End of study: patients were followed up to a maximum of 187 weeks. Results are provided for the full study population as planned and documented in the protocol and SAP, and not by age group.

Time frame: Index date, week 24 and end of study

Population: Full study population: included all patients who satisfied the study inclusion criteria.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsParticipants With Concomitant PROS-related Medications Over TimeIndex date34 Participants
Pediatric PatientsParticipants With Concomitant PROS-related Medications Over Time24 weeks30 Participants
Pediatric PatientsParticipants With Concomitant PROS-related Medications Over TimeEnd of study25 Participants
Secondary

Percent Change in the Sum of All Measurable Lesion Volume

Percent change in the sum of all measurable (target and non-target) lesion volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date (baseline) was defined as the date of alpelisib initiation. End of study: patients were followed up to a maximum of 187 weeks As no measurable non-target lesions were identified, the results for changes in the sum of all measurable (target and non-target) lesion volume were identical to the results presented for measurable target lesion.

Time frame: Index date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)

Population: Full study population: included all patients who satisfied the study inclusion criteria.~At each time point, only patients with a value at both index date and that time point are included in the calculation of change.

ArmMeasureGroupValue (MEAN)Dispersion
Pediatric PatientsPercent Change in the Sum of All Measurable Lesion Volume12 weeks-18.59 % change in the sum of lesion vol.Standard Deviation 16.837
Pediatric PatientsPercent Change in the Sum of All Measurable Lesion Volume52 weeks-13.91 % change in the sum of lesion vol.Standard Deviation 19.206
Pediatric PatientsPercent Change in the Sum of All Measurable Lesion Volume24 weeks-11.20 % change in the sum of lesion vol.Standard Deviation 19.987
Pediatric PatientsPercent Change in the Sum of All Measurable Lesion VolumeEnd of study-36.47 % change in the sum of lesion vol.Standard Deviation 46.137
Pediatric PatientsPercent Change in the Sum of All Measurable Lesion Volume4 weeks-11.64 % change in the sum of lesion vol.Standard Deviation 12.869
Adult PatientsPercent Change in the Sum of All Measurable Lesion VolumeEnd of study-17.38 % change in the sum of lesion vol.Standard Deviation 11.679
Adult PatientsPercent Change in the Sum of All Measurable Lesion Volume4 weeks-11.78 % change in the sum of lesion vol.Standard Deviation 8.154
Adult PatientsPercent Change in the Sum of All Measurable Lesion Volume12 weeks-19.77 % change in the sum of lesion vol.Standard Deviation 5.128
Adult PatientsPercent Change in the Sum of All Measurable Lesion Volume24 weeks-19.69 % change in the sum of lesion vol.Standard Deviation 15.375
Adult PatientsPercent Change in the Sum of All Measurable Lesion Volume52 weeks-6.52 % change in the sum of lesion vol.Standard Deviation 2.614
Secondary

Percent Change in the Sum of All Measurable Non-target Lesion Volume

Percent change in the sum of all measurable non-target lesion volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date (baseline) was defined as the date of alpelisib initiation.

Time frame: Index date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)

Population: Full study population: included all patients who satisfied the study inclusion criteria. Only patients with non-target lesion are included in the analysis.~Zero patients were included in this measure since no measurable non-target lesions were identified by independent central radiology review (ICRR) at the index date.

Secondary

Percent Change in the Sum of Measurable Target Lesion Volume

Percent change in the sum of measurable target lesion (1 to 3 lesions) volume, as assessed by a central review of imaging scans, as measured by the change between the index date (or up to 24 weeks prior) and key time-points following the index date. The index date: (baseline) was defined as the date of alpelisib initiation End of study: patients were followed up to a maximum of 187 weeks.

Time frame: Index date, week 4, 12 , 24, 52 and end of study (up to a maximum of week 187)

Population: Full study population: included all patients who satisfied the study inclusion criteria.~At each time point, only patients with a value at both index date and that time point are included in the calculation of change

ArmMeasureGroupValue (MEAN)Dispersion
Pediatric PatientsPercent Change in the Sum of Measurable Target Lesion Volume12 weeks-18.59 % change in the sum of lesion vol.Standard Deviation 16.837
Pediatric PatientsPercent Change in the Sum of Measurable Target Lesion Volume52 weeks-13.91 % change in the sum of lesion vol.Standard Deviation 19.206
Pediatric PatientsPercent Change in the Sum of Measurable Target Lesion Volume24 weeks-11.20 % change in the sum of lesion vol.Standard Deviation 19.987
Pediatric PatientsPercent Change in the Sum of Measurable Target Lesion VolumeEnd of study-36.47 % change in the sum of lesion vol.Standard Deviation 46.137
Pediatric PatientsPercent Change in the Sum of Measurable Target Lesion Volume4 weeks-11.64 % change in the sum of lesion vol.Standard Deviation 12.869
Adult PatientsPercent Change in the Sum of Measurable Target Lesion VolumeEnd of study-17.38 % change in the sum of lesion vol.Standard Deviation 11.679
Adult PatientsPercent Change in the Sum of Measurable Target Lesion Volume4 weeks-11.78 % change in the sum of lesion vol.Standard Deviation 8.154
Adult PatientsPercent Change in the Sum of Measurable Target Lesion Volume12 weeks-19.77 % change in the sum of lesion vol.Standard Deviation 5.128
Adult PatientsPercent Change in the Sum of Measurable Target Lesion Volume24 weeks-19.69 % change in the sum of lesion vol.Standard Deviation 15.375
Adult PatientsPercent Change in the Sum of Measurable Target Lesion Volume52 weeks-6.52 % change in the sum of lesion vol.Standard Deviation 2.614
Secondary

Reasons for Discontinuation of Concomitant PROS-related Non-drug Treatments

Number of participants with concomitant PIK3CA Related Overgrowth Spectrum (PROS)-related non-drug treatments and other medical interventions by reason for discontinuation. A patient may have multiple information, but was counted only once in type of other supportive non-drug treatment if more than one type in this category has been reported.

Time frame: Up to 187 weeks

Population: Full study population: included all patients who satisfied the study inclusion criteria. Only patients who were under concomitant PROS-related non-drug treatments were included in this analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsRecovery12 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsCompleted the planned course of treatment4 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsUnknown2 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsLack of efficacy1 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsOther2 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsAdverse event0 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsProgressive disease0 Participants
Pediatric PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsSubject decision0 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsSubject decision1 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsRecovery2 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsOther0 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsCompleted the planned course of treatment7 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsProgressive disease1 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsUnknown1 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsAdverse event1 Participants
Adult PatientsReasons for Discontinuation of Concomitant PROS-related Non-drug TreatmentsLack of efficacy1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026