Health-related Quality of Life, Symptom Severity, and Pain Among Patients With PIK3CA-related Overgrowth Spectrum: A Mixed-methods Observational Study

Health-related Quality of Life, Symptom Severity, and Pain Among Patients Treated With Alpelisib for PIK3CA-related Overgrowth Spectrum: A Mixed-methods Observational Study

This was a mixed-methods observational study that incorporated both qualitative interviews and longitudinal quantitative data collection through an online survey (initial, 2 months, and 4 months).

Study Overview

• Status: Completed
• Conditions: PIK3CA-related Overgrowth Spectrum
• Intervention / Treatment: Other: Alpelisib

Detailed Description

This study collected qualitative data through interviews with patients and caregivers and qualitative data through a web-based longitudinal survey.

Both parts of the study were designed to collect information on HRQoL, symptom severity, and pain among patients with PROS who were receiving treatment with alpelisib in the US. In addition, patients who had not been treated with alpelisib also participated in the quantitative part of the study by providing data on HRQoL, symptom severity, and pain, collected from a single administration of the web-based survey.

• Study Type: Observational
• Enrollment (Actual): 77

Contacts and Locations

Study Locations

• United States
  • New Jersey
    • East Hanover, New Jersey, United States, 07936
      • Novartis Investigative Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 5 years to 99 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Three groups of of participants were included:

• Adults with PROS who are capable of independently completing the required Clinical Outcome Assessments (adult self-report)
• Adolescents, between the ages of 12 and 17 (inclusive), with PROS who are capable of independently completing the required Clinical Outcome Assessments, as assessed by a legal guardian (adolescent self-report).
• Caregivers of children/adolescents with PROS (caregivers proxy-report). these must be parents or legal guardians whose children are between the ages of 5 and 11, or adolescents between the ages of 12 and 17 who are unable to independently complete the required Clinical Outcome Assessments.

Description

Inclusion Criteria:

Adult patients:

• At least 18 years of age

• Self-reports having been diagnosed with 1 of the following syndromes:

  • Klippel-Trenaunay Syndrome (KTS)
  • Congenital Lipomatous Overgrowth, Vascular Malformations, Epidermal Nevi, Scoliosis/Skeletal and spinal (CLOVES syndrome)
  • Isolated Lymphatic Malformation (ILM)
  • Megalencephaly-Capillary Malformation (MCAP or M-CM)
  • Hemimegalencephaly (HME)/Dysplastic Megalencephaly (DMEG)/Focal cortical dysplasia type II
  • Hemihyperplasia-Multiple Lipomatosis (HHML)
  • Facial Infiltrating Lipomatosis (FIL)
  • Fibroadipose Vascular Anomaly (FAVA)
  • Macrodactyly
  • Hemihyperplasia (Muscular HH)
  • Fibroadipose hyperplasia or Overgrowth (FAO)
  • Capillary malformation of the lower lip, Lymphatic malformation of the face and neck, Asymmetry of the face and limbs, and Partial or generalized Overgrowth (CLAPO syndrome)
  • Epidermal nevus, benign lichenoid keratosis, or seborrheic keratosis
• Able to converse and read/answer survey questions in English
• Willing and able to provide informed consent

Adolescent patients

• Between the ages of 12 and 17 years

• Self-reports having been diagnosed with one of the following syndromes:

  • Klippel-Trenaunay Syndrome (KTS)
  • Congenital Lipomatous Overgrowth, Vascular Malformations, Epidermal Nevi, Scoliosis/Skeletal and spinal (CLOVES syndrome)
  • Isolated Lymphatic Malformation (ILM)
  • Megalencephaly-Capillary Malformation (MCAP or M-CM)
  • Hemimegalencephaly (HME)/Dysplastic Megalencephaly (DMEG)/Focal cortical dysplasia type II
  • Hemihyperplasia-Multiple Lipomatosis (HHML)
  • Facial Infiltrating Lipomatosis (FIL)
  • Fibroadipose Vascular Anomaly (FAVA)
  • Macrodactyly
  • Hemihyperplasia (Muscular HH)
  • Fibroadipose hyperplasia or Overgrowth (FAO)
  • Capillary malformation of the lower lip, Lymphatic malformation of the face and neck, Asymmetry of the face and limbs, and Partial or generalized Overgrowth (CLAPO syndrome)
  • Epidermal nevus, benign lichenoid keratosis, or seborrheic keratosis
• Able to converse and read/answer survey questions in English independently, as assessed by guardian
• Willing and able to provide assent
• Has a parent/legal guardian who is able and willing to provide permission for the adolescent to participate

Caregivers

• At least 18 years of age

• Is the parent/legal guardian of a child/adolescent who has been diagnosed with one of the following syndromes:

  • Klippel-Trenaunay Syndrome (KTS)
  • Congenital Lipomatous Overgrowth, Vascular Malformations, Epidermal Nevi, Scoliosis/Skeletal and spinal (CLOVES syndrome)
  • Isolated Lymphatic Malformation (ILM)
  • Megalencephaly-Capillary Malformation (MCAP or M-CM)
  • Hemimegalencephaly (HME)/Dysplastic Megalencephaly (DMEG)/Focal cortical dysplasia type II
  • Hemihyperplasia-Multiple Lipomatosis (HHML)
  • Facial Infiltrating Lipomatosis (FIL)
  • Fibroadipose Vascular Anomaly (FAVA)
  • Macrodactyly
  • Hemihyperplasia (Muscular HH)
  • Fibroadipose hyperplasia or Overgrowth (FAO)
  • Capillary malformation of the lower lip, Lymphatic malformation of the face and neck, Asymmetry of the face and limbs, and Partial or generalized Overgrowth (CLAPO syndrome)
  • Epidermal nevus, benign lichenoid keratosis, or seborrheic keratosis
• Child is either between the ages of 5 and 11 (inclusive), or between the ages of 12 and 17 years (inclusive) but is unable to self-report due to cognitive difficulties
• Able to converse and read/answer survey questions in English
• Willing and able to provide informed consent

Exclusion Criteria:

There are no specific exclusion criteria. However, participants may be excluded if the quota related to alpelisib treatment (60 treated with alpelisib; 40 not treated with alpelisib) has been achieved. For example, if 40 participants not treated with alpelisib have been recruited into the study, any additional participants not treated with alpelisib will be excluded. Patients treated with alpelisib may be similarly excluded if the quota of 60 patients has already been achieved.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
PROS patients treated with alpelisib; Patients with PROS who receive treatment with alpelisb	Other: Alpelisib; There was no treatment allocation. Patients administered alpelisib by prescription that were involved in Novartis' alpelisib managed access program were enrolled
PROS patients not treated with alpelisib; Patients with PROS who don't receive treatment with apelisib

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
PROMIS-29 + 2 profile for adult self-report	Patient-Reported Outcomes Measurement Information System (PROMIS)-29 +2 profile. The PROMIS-29 plus 2 Profile v2.1 is designed for adults ≥18 years of age and includes 29 items across the following domains: depression, anxiety, physical function, pain interference, fatigue, sleep disturbance, ability to participate in social roles and activities, cognitive function on a scale of 1 (worst) to 5 (best), and pain intensity (on a scale ranging from 0 (no pain) to 10 (worst pain imaginable).	Up to 4 months
EQ-5D-5L for Adult self-report	The EuroQoL-5 Dimension (EQ-5D-5L) is a simple, generic measure that includes only 5 basic domains common to many generic health status measures: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. The form used in this study (EQ-5D-5L) has 5 response categories for each dimension (no problems, slight problems, moderate problems, severe problems and extreme problems). The EQ-5D-5L was developed for completion by adults	Up to 4 months
PROMIS pediatric profile for adolescent self-Report and Caregiver-Proxy	The PROMIS Pediatric-25 Profile v2.0 is designed for self-report by children ages 8-17; It is designed for completion by a parent proxy on behalf of children ages 5-17. These assess depressive symptoms, anxiety, physical function-mobility, pain interference, fatigue, peer relationships, on a scale of 1 (worst) to 5 (best) and pain intensity scale ranging from 0 (no pain) to 10 (worst pain you can think of). The content of the pediatric and parent-proxy forms are identical, except for minor modifications to account for differences in responders (e.g., "I felt worried" vs "My child felt worried").	Up to 4 months
PROMIS pediatric sleep disturbance for Adolescent Self-Report and Caregiver-Proxy	The PROMIS sleep disturbance short form includes 4 items that assess difficulty falling asleep, sleeping through the night, problems with sleep, and trouble sleeping on a scale of 1 (worst) to 5 (best). In order to achieve similar domain coverage across the entire sample, the PROMIS Pediatric and Parent-Proxy Sleep Disturbance Short Form 4a will be administered to participants under the age of 18 and caregivers of children with PROS, since unlike the adult PROMIS Profile, the pediatric and parent-proxy PROMIS profile does not include a sleep disturbance domain.	Up to 4 months
EQ-5D-Youth for adolescent Self-Report and Caregiver-Proxy	The EQ-5D-Y is based on the EQ-5D-3L but assesses the 5 dimensions using language that is more suitable to children/adolescents (the 5 dimensions are: mobility, looking after oneself, doing usual activities, having pain or discomfort, and feeling worried, sad, or unhappy). The 5 dimensions are answered using a 3-point response scale, where higher scores indicate better outcome. The EQ-5D-Y also has a proxy version that assesses the same domains as the EQ-5D-Y.	Up to 4 months
Global impression of symptom severity	A single item will be fielded to all 3 groups of participants, asking for an assessment of the overall severity of symptoms experienced. This item includes 5 response options: no symptoms, mild, moderate, severe, and very severe. Minor modifications are made to the item wording to account for differences between adult/child self-report and caregiver proxy-report (e.g., changing "your overall symptoms" to "your child's overall symptoms").	Up to 4 months
Modified PROMIS dyspnea severity for adult Self-Report and Adolescent Self-Report	Two items will be used to assess a specific symptom: shortness of breath. These items are based on 2 items in the PROMIS Dyspnea Severity item bank, but with a 24-hour recall: Shortness of breath when walking up 10 stairs; Shortness of breath when talking while walking The 2 PROMIS dyspnea severity items will be answered using a 5-point response scale: No shortness of breath, Mildly short of breath, Moderately short of breath, Severely short of breath, I did not do this in the past 24 hours. There is no proxy version of the PROMIS Dyspnea Severity item bank, and thus the dyspnea severity items will not be administered to caregiver participants of the current study.	Up to 4 months
Brief Pain Inventory for Adult Self-Report and Adolescent Self-Report	The BPI is a multi-item assessment of pain. This assessment includes 2 domains that, together, assess the overall pain experience: pain severity and pain interference. Three BPI items will be administered as part of the current study: one item assesses pain at its worst over the past 24 hours , one item assesses where on the body pain is experienced, and one item assesses the type of pain that is experienced. The worst pain item includes an 11-point response scale ranging from 0 (no pain) to 10 (pain as bad as you can imagine). A diagram of the human body (front and back) is provided for responders to mark the areas of pain and the area that hurts the most. A series of descriptors (e.g., burning, tiring, and numb) will be provided for the responders to indicate whether each adjective applies to their pain. As this endpoint has not been adapted for proxy report, it will only be completed by adolescents and adults who are able to self-report.	Up to 4 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Description of change in HRQoL, symptom severity, and pain as a result of treatment	These descriptions will be provided by patients and caregivers during qualitative interviews. Interview transcripts will be coded and analyzed by experienced members of the qualitative research team, using a 2-part thematic analysis approach. In addition to assigning data to a set of a priori codes (i.e., codes developed in advance and linked to the interview guide), the study team will also use a grounded theory approach, in which additional codes will be developed and refined in an on-going manner as the transcripts are reviewed and analyzed. This mix of coding methods will ensure key aspects of interest (e.g., concepts related to HRQoL, symptom severity, and pain) are addressed while still leaving room for new descriptions and experiences to be considered.	4 months

Collaborators and Investigators

• Sponsor: Novartis Pharmaceuticals
• Investigators: Study Director: Novartis Pharmaceuticals, Novartis Pharmaceuticals

Study record dates

Study Major Dates

• Study Start (Actual): May 16, 2022
• Primary Completion (Actual): June 28, 2024
• Study Completion (Actual): June 28, 2024

Study Registration Dates

• First Submitted: February 23, 2022
• First Submitted That Met QC Criteria: March 15, 2022
• First Posted (Actual): March 24, 2022

Study Record Updates

• Last Update Posted (Actual): June 24, 2025
• Last Update Submitted That Met QC Criteria: June 18, 2025
• Last Verified: June 1, 2025

More Information

Terms related to this study

• Keywords: NIS; Alpelisib; PROS; PIK3CA-related overgrowth spectrum
• Other Study ID Numbers: CBYL719A0US14

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO