The BROADEN Study: A Study of Volanesorsen (Formerly IONIS-APOCIIIRx) in Participants With Familial Partial Lipodystrophy

Randomized Treatment Period: Percent Change From Baseline in Hepatic Steatosis as Assessed by Hepatic Fat Fraction Using Magnetic Resonance Imaging (MRI)

Baseline was defined as the last non-missing assessment prior to the first dose of study drug in the randomized treatment period. Randomized treatment period: Month 6 value was defined as Week 25 or Week 26 for MRI assessment and Month 12 was defined as Week 50 or Week 52 for MRI assessment. Hepatic steatosis is a reversible condition in which large vacuoles of triglyceride fat accumulate in the liver cells, causing nonspecific inflammation. Hepatic Steatosis was assessed by hepatic fat fraction using MRI.

Time frame: Baseline, Months 6 and 12

Open-Label Extension Period: Percent Change From Baseline in Hepatic Steatosis as Assessed by Hepatic Fat Fraction Using MRI

Baseline was defined as the last non-missing assessment prior to the first dose of study drug in the randomized treatment period. Open-label extension period: Month 6 value was defined as Week 77 or Week 78 for MRI assessment and Month 12 value was defined as Week 102 or Week 104 for MRI assessment. Hepatic steatosis is a reversible condition in which large vacuoles of triglyceride fat accumulate in the liver cells, causing nonspecific inflammation. Hepatic Steatosis was assessed by hepatic fat fraction using MRI.

Time frame: Baseline, Months 6 and 12

Randomized Treatment Period: Change From Baseline in Hemoglobin A1c (HbA1c)

Baseline was defined as the last non-missing assessment prior to the first dose of study drug. Randomized treatment period: The Month 3 value was defined as Week 13, Month 6 value was defined as Week 26, Month 9 value was defined as Week 38 and Month 12 value was defined as Week 52.

Time frame: Baseline, Months 3, 6, 9, and 12

Open Label Extension Period: Change From Baseline in HbA1c

Baseline was defined as the last non-missing assessment prior to the first dose of study drug. Open-label extension period: Month 3 value was defined as Week 65, Month 6 value was defined as Week 78, Month 9 value was defined as Week 90 and Month 12 value was defined as Week 104.

Time frame: Baseline, Months 3, 6, 9, and 12

Randomized Treatment Period: Percentage of Participants Who Achieved Greater Than or Equal to (≥) 40% Reduction in Fasting Triglyceride and ≥ 30% Reduction of Hepatic Fat Fraction at Month 6

The baseline of TG is defined as the average of Day 1 pre-dose fasting assessment and the last fasting measurement prior to Day 1 pre-dose fasting assessment. The baseline of hepatic fat fraction is defined as the last non-missing assessment prior to the first dose of study drug. Randomized treatment period: Month 6 value was defined as average of Week 25 and Week 26 for fasting TG and Week 25 or Week 26 for hepatic fat fraction.

Time frame: Month 6

Randomized Treatment Period: Change From Baseline in Disease Burden Score

The Disease Burden Score is a questionnaire that allows participants to self-report their chronic conditions and then assess the degree to which each condition interferes with daily activities.

Time frame: From the first dose of study drug to Week 52

Open-Label Extension Period: Change From Baseline in Disease Burden Score

The Disease Burden Score is a questionnaire that allows participants to self-report their chronic conditions and then assess the degree to which each condition interferes with daily activities.

Time frame: From the first dose of study drug in open label extension period to Week 117

Randomized Treatment Period: Patient-Reported Pain

Patient-reported pain was assessed by rating pain symptoms at its worst and least for the last 24 hours, on average, and at the moment, with 0 as the lowest score (no pain) and 10 as the highest score (worst pain as you can imagine). Patient-reported pain was also assessed by rating pain symptoms (rate pain on average, rate pain right now) that interfered with general activity, interfered with mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life, with 0 as the lowest score (did not interfered) and 10 as the highest score (completely interfered). The scores from each assessment time point were averaged for all of the below reported categories.

Time frame: From the first dose of study drug up to Week 52

Open Label Extension Period: Patient-Reported Pain

Patient-reported pain was assessed by rating pain symptoms at its worst and least for the last 24 hours, on average, and at the moment, with 0 as the lowest score (no pain) and 10 as the highest score (worst pain as you can imagine). Patient-reported pain was also assessed by rating pain symptoms (rate pain on average, rate pain right now) that interfered with general activity, interfered with mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life, with 0 as the lowest score (did not interfered) and 10 as the highest score (completely interfered). The scores from each assessment time point were averaged for all of the below reported categories.

Time frame: From the first dose of study drug in open label extension period up to Week 117

Randomized Treatment Period: Patient-Reported Hunger

Patient-reported hunger was assessed by participants who completed a questionnaire about: how hungry you feel, how satisfied you feel, how full you feel, how much you think you can eat, like to eat something sweet, like to eat something salty, like to eat something savory and like to eat something fatty. Participants also rated the palatability of meals that included visual appeal, smell, taste, and aftertaste. Scores of 1-39 were categorized as mild, 40-69 as moderate, and 70-100 as severe. The scores from each assessment time point were averaged for all of the below reported categories.

Time frame: From the first dose of study drug up to Week 52

Open Label Extension Period: Patient-Reported Hunger

Patient-reported hunger was assessed by participants who completed a questionnaire about: how hungry you feel, how satisfied you feel, how full you feel, how much you think you can eat, like to eat something sweet, like to eat something salty, like to eat something savory and like to eat something fatty. Participants also rated the palatability of meals that included visual appeal, smell, taste, and aftertaste. Scores of 1-39 were categorized as mild, 40-69 as moderate, and 70-100 as severe. The scores from each assessment time point were averaged for all of the below reported categories.

Time frame: From the first dose of study drug in open label extension period up to Week 117

Randomized Treatment Period: Change From Baseline in Mean Short Form-36 (SF-36) Weighted Sum of Scores

The SF-36 Health Survey is a 36-item, patient-reported survey of patient health. SF-36 consists of 8 health dimensions,which are weighted sums of the questions in each section. SF-36 included 36 questions related to 8 health dimensions:physical functioning, physical role functioning, bodily pain, general health perceptions, vitality, social role functioning,emotional role functioning, and mental health. Each dimension was scored on a scale of 0 to 100 where, higher score = better quality of life. A positive change from Baseline indicates improvement.

Time frame: Baseline, Weeks 13, 26 and 52

Open-Label Extension Period: Change From Baseline in Mean SF-36 Weighted Sum of Scores

The SF-36 Health Survey is a 36-item, patient-reported survey of patient health. SF-36 consists of 8 health dimensions,which are weighted sums of the questions in each section. SF-36 included 36 questions related to 8 health dimensions:physical functioning, physical role functioning, bodily pain, general health perceptions, vitality, social role functioning,emotional role functioning, and mental health. Each dimension was scored on a scale of 0 to 100 where, higher score = better quality of life. A positive change from Baseline indicates improvement.

Time frame: Baseline, Weeks 65, 78 and 104

Randomized Treatment Period: Change From Baseline in Mean EQ-5D: Index Scores and Visual Analog Scale (VAS)

EQ-5D-5L is a standardized health-related quality of life questionnaire developed by EuroQol Group in order to provide a simple, generic measure of health for clinical and economic appraisal. EQ-5D-5L consists of two components: a health state profile and VAS. EQ-5D health state profile is comprised of 5 dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems, and 5=extreme problems. The 5D-5L systems are converted into a single index utility score between 0 to 1, where higher score indicates a better health state. EQ-5D-5L- VAS is designed to rate the participant's current health state on a scale from 0 to 100, where 0 represents the worst imaginable health state and 100 represents the best imaginable health state. A negative change from baseline indicates worsening. A positive change from baseline indicates improvement.

Time frame: Baseline, Weeks 13, 26 and 52

Open-Label Extension Period: Change From Baseline in Mean EQ-5D: Index and Visual Analog Scale (VAS) Scores

EQ-5D-5L is a standardized health-related quality of life questionnaire developed by EuroQol Group in order to provide a simple, generic measure of health for clinical and economic appraisal. EQ-5D-5L consists of two components: a health state profile and VAS. EQ-5D health state profile is comprised of 5 dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems, and 5=extreme problems. The 5D-5L systems are converted into a single index utility score between 0 to 1, where higher score indicates a better health state. EQ-5D-5L- VAS is designed to rate the participant's current health state on a scale from 0 to 100, where 0 represents the worst imaginable health state and 100 represents the best imaginable health state. A negative change from baseline indicates worsening. A positive change from baseline indicates improvement.

Time frame: Baseline, Weeks 65, 78 and 104