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FAPPhase 3NCT02175004

Extension Study Assessing Long Term Safety and Efficacy of IONIS-TTR Rx in Familial Amyloid Polyneuropathy (FAP)

A Phase 3 study testing Inotersen in people with FAP and Familial Amyloid Polyneuropathy, run by Ionis Pharmaceuticals, Inc. at 22 sites in 9 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study evaluates the safety and tolerability of extended dosing with IONIS-TTR Rx in patients with Familial Amyloid Polyneuropathy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
FAP, Familial Amyloid Polyneuropathy, TTR
What is being tested?
Inotersen
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
135 participants
Where
22 sitesin 9 countries
Study dates
26 Jun 2014to 7 Jan 2021
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Satisfactory completion of dosing \& efficacy assessments in ISIS 420915-CS2

Who cannot join

  • Any new condition or worsening of existing condition that could make the patient unsuitable for participation, or interfere with the patient participating in and/or completing the study

Trial locations and contacts

22 sites in 9 countries.

22 sites in 9 countries

United States9 sites
  • Johns Hopkins University Bayview Medical Center

    Baltimore, Maryland, 21205

  • Boston University School of Medicine - Amyloid Treatment & Research Program

    Boston, Massachusetts, 02118

  • Indiana University School of Medicine

    Indianapolis, Indiana, 46202

  • Mount Sinai Medical Center

    New York, New York, 10029

  • Columbia University Medical Center - The Neurological Institute

    New York, New York, 10032

  • University of California, Irvine

    Orange, California, 92868

  • Penn Presbyterian Medical Center

    Philadelphia, Pennsylvania, 19104

  • Oregon Health & Science University

    Portland, Oregon, 97239

  • Mayo Clinic

    Rochester, Minnesota, 55905

Other trials in United States

Brazil2 sites
  • Federal University of Rio de Janeiro - University Hospital

    Rio de Janeiro, CEP 21941913

  • AACD

    São Paulo

Other trials in Brazil

France2 sites
  • CHU Henri Mondor - Department of Neurology

    Créteil, 94000

  • CHU Bicetre Aphp French Referral Center for FAP/Cornamyl Network

    Le Kremlin-Bicêtre, 94275

Other trials in France

Italy2 sites
  • Universita Degli Studi Di Messina - Azienda Ospedaliera Universitaria Policlinico "Gaetano Martino"

    Messina, Sicily, 98124

  • Centro per lo Studio e la Cura delle Amiloidosi Sistemiche - Fondazione IRCCS Policlinico San Matteo

    Pavia, 27100

Other trials in Italy

Portugal2 sites
  • CHLN - Hospital de Santa Maria

    Lisbon, 1649-035

  • CHP-HGSA, Unidade Clinica de Paramiloidose

    Porto, 4099-001

Other trials in Portugal

Spain2 sites
  • Hospital Universitari Vall D' Hebron

    Barcelona, 08035

  • Hospital Clinic

    Barcelona, 08036

Other trials in Spain

Argentina1 site
  • FLENI

    Buenos Aires

Other trials in Argentina

Germany1 site
  • UKM; Universitätsklinikum Münster, Klinik für Transplantationsmedizin

    Münster, 48149

Other trials in Germany

United Kingdom1 site
  • University College London - National Amyloidosis Centre

    London, NW3 2PF

Other trials in United Kingdom

About this study

Official title: An Open-Label Extension Study to Assess the Long-Term Safety and Efficacy of ISIS 420915 in Patients With Familial Amyloid Polyneuropathy (FAP)

This study evaluates the safety and tolerability of extended dosing with IONIS-TTR Rx in patients with Familial Amyloid Polyneuropathy.

Read the detailed description

Familial Amyloid Polyneuropathy (FAP) is a rare, hereditary disease caused by mutations in the transthyretin (TTR) protein. TTR is made by the liver and secreted into the blood. TTR mutations cause it to misfold and deposit in multiple organs causing FAP.

IONIS-TTR Rx is an antisense drug that is designed to decrease the amount of mutant and normal TTR made by the liver. It is predicted that decreasing the amount of TTR protein will result in a decrease in the formation of TTR deposits, and thus slow or stop disease progression.

This study evaluates the safety and tolerability of extended dosing with IONIS-TTR Rx in patients with Familial Amyloid Polyneuropathy.

Being tested
Inotersen
Keywords
FAP, Familial Amyloid Polyneuropathy, TTR, Transthyretin, Amyloidosis
Medical subject headings
Amyloid Neuropathies, Familial, Amyloidosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • InotersenDrug

    Also called TEGSEDI, IONIS-TTR Rx, ISIS 420915

    Inotersen SC

Study groups in NCT02175004
Study groupRoleWhat they receive
Previous Placebo-Inotersen 300 mgExperimentalParticipants received subcutaneous (SC) doses of 300 milligrams (mg) inotersen once weekly for up to 260 weeks. Participants who received inotersen-matching placebo in the previous study- ISIS 420915-CS2 (NCT01737398) were included in this group.
Receives: Drug: Inotersen
Previous Inotersen-Inotersen 300 mgExperimentalParticipants received SC doses of 300 mg inotersen once weekly for up to 260 weeks. Participants who received inotersen in the previous study- ISIS 420915-CS2 were included in this group.
Receives: Drug: Inotersen

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With Treatment Emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs Related to Study Drug

    An adverse event (AE) is any unfavorable and unintended sign (including a clinically significant abnormal laboratory finding, for example), symptom, or disease temporally associated with the study or use of investigational drug product, whether or not the AE is considered related to the investigational drug product. A TEAE is defined as an adverse event with an onset that occurs after receiving study drug. An SAE is any untoward medical occurrence that at any dose that results in death, is life threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, leads to a congenital anomaly/birth defect, or is an important medical event. TEAEs considered related to the study drug as assessed by the Investigator are reported.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  2. Percentage of Participants With Change From Baseline in Vital Signs

    Vital signs included blood pressure, heart rate, respiratory rate, and temperature. Only categories with at least one participant with event are reported.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  3. Percentage of Participants With Change From Baseline in Weight

    As prespecified in the protocol, percentage of participants with change from baseline in weight is reported in 2 categories, decrease of ≥7% from Baseline and increase of ≥7% from Baseline.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  4. Percentage of Participants With Clinically Significant Change From Baseline in Laboratory Test Values

    Clinical laboratory tests included the analysis of chemistry, haematology, and urinalysis. Any value outside the normal range will be flagged for the attention of the investigator who will assess whether or not a flagged value is of clinical significance. Only those categories with at least one participant with event are reported. Normal range of creatinine clearance is 110 to 150 mL/min in males and 100 to 130 mL/min in females. Normal urine protein to creatinine (P/C) ratio= <0.2. Normal range for Alanine Aminotransferase (ALT) is 4 to 36 units per liter (U/L). Platelets normal range=140×10^9/L to 400×10^9/L.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  5. Percentage of Participants With Change From Baseline in QT Interval Corrected Using Fridericia's Formula (QTcF) as Determined by Electrocardiogram (ECG)

    Normal QTcF at Baseline is defined as ≤450 milliseconds (ms) for males or ≤470 ms for females. Percentage of participants with QT interval outside of normal range are reported.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  6. Percentage of Participants Using Concomitant Medication for Nervous and Cardiovascular System Disorders

    A concomitant therapy was any non-protocol-specified drug or substance (including over-the counter medications, herbal medications, and vitamin supplements) administered between signing of informed consent and the final post-treatment visit for treating nervous and cardiovascular system disorders.

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  7. Percentage of Participants With Change From Baseline in Ophthalmic Examination as Assessed by Visual Acuity Changes

    Measured: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)

  8. Percentage of Participants With Change From Baseline in Light Detection Ability Measured by Electroretinography

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

Secondary outcomes (20)
  1. Change From Baseline in the Modified Neuropathy Impairment Score (mNIS)+7 Composite Score at Weeks 78 and 156

    The mNIS+7 composite score is a measure of neurologic impairment that evaluates muscle weakness, sensation, reflexes, nerve conduction, and autonomic function. The mNIS+7 Composite Score has a range of -22.32 to 346.32 and a higher mNIS+7 composite score indicates worsening disease. A positive change from Baseline indicates worsening of polyneuropathy impairments. Mixed Effects Model with Repeated Measures (MMRM) was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  2. Change From Baseline in the mNIS +7 Component: Heart Rate to Deep Breathing Score at Weeks 78 and 156

    Heart rate to deep breathing is a quantitative autonomic test using the CASE IV instrument that measures a participant's change in heart rate after deep breathing. The score of this component ranges from 0 to 3.72 points. Higher scores indicate impairment. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  3. Change From Baseline in the mNIS +7 Component: Nerve Conduction Score at Weeks 78 and 156

    The nerve conduction tests are quantitative tests that measure the conduction attributes of preselected nerves. The score range of this component is 0 to 18.6 points. Higher scores indicate impairment. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  4. Change From Baseline in the mNIS +7 Component: Heat-Pain Sensory Score at Weeks 78 and 156

    The Heat-Pain Sensory test uses the CASE IV instrument to perform standardized psychophysical measurement to determine pain sensory thresholds in response to heat. The maximum score of this component is 0 to 40 points. Higher scores indicate impairment. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  5. Change From Baseline in the mNIS +7 Component: Touch-Pressure Sensory Score at Weeks 78 and 156

    The Touch-Pressure Sensory test uses the CASE IV instrument to perform standardized psychophysical measurement to determine pressure sensory thresholds in response to touch. The score range of this component is 0 to 40 points. Higher scores indicate impairment. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  6. Change From Baseline in the Neuropathy Impairment (NIS) Composite Score at Week 52 of Years 4 and 5

    The NIS score is a measure of neurologic impairment. The NIS Score has a range of 0 to 244 and a higher NIS score indicates lower function. A positive change from Baseline indicates worsening. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Week 52 of Years 4 and 5

  7. Change From Baseline in the NIS Component: Cranial Nerves Score at Week 52 of Years 4 and 5

    Cranial Nerve assessment involves testing 3rd and 6th nerves and facial, palate, and tongue weakness. The score range for this component is 0 to 40 points. Higher scores indicate worsening. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Week 52 of Years 4 and 5

  8. Change From Baseline in the NIS Component: Muscle Weakness Score at Week 52 of Years 4 and 5

    Muscle weakness involves testing 19 movements of muscles. The score range of this component is 0 to 152 points. Higher scores indicate worsening. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Week 52 of Years 4 and 5

  9. Change From Baseline in the NIS Component: Reflexes Score at Week 52 of Years 4 and 5

    The Reflexes Score involves testing 5 reflexes to stimuli. The score range of this component is 0 to 20 points. Higher scores indicate worsening. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Week 52 of Years 4 and 5

  10. Change From Baseline in the NIS Component: Sensory Score at Week 52 of Years 4 and 5

    The Sensory Score is based on testing an index finger and a big toe each to 4 stimuli. The score of this component ranges from 0 to 32 points. Higher scores indicate impairment. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Week 52 of Years 4 and 5

  11. Change From Baseline in the Norfolk Quality of Life-Diabetic Neuropathy (QOL-DN) Questionnaire Total Score at Weeks 78 and 156

    The Norfolk QoL-DN score is a measure of physical function/large fiber neuropathy, symptoms, activities of daily living, small fiber neuropathy, and autonomic neuropathy. The Norfolk QoL-DN total score has a range of -4 to 136, and a higher Norfolk QoL-DN score indicates poorer QoL. A positive change from Baseline indicates worsening in the QoL. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156 and at the end of each subsequent treatment year (Week 52 of Years 4 and 5)

  12. Change From Baseline in the Norfolk QoL-DN Physical Functioning/Large Fiber Neuropathy Domain Score

    The Norfolk QoL-DN physical functioning/large fiber neuropathy domain score is a sub-score of the total Norfolk QoL-DN Questionnaire. The Norfolk QoL-DN physical function/large fiber neuropathy domain score has a range of -4 to 56, and a higher Norfolk QoL-DN domain score indicates poorer quality of life (QoL). A positive change from Baseline indicates worsening in the QoL. MMRM was used for the analysis.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156 and at the Week 52 of Year 4

  13. Change From Baseline in the Modified Body Mass Index (mBMI) at Weeks 78 and 156

    BMI=weight (kg)/[height (m)^2]. The mBMI is the BMI multiplied by the serum albumin (g/L).

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  14. Change From Baseline in the Body Mass Index (BMI) at Weeks 78 and 156

    BMI=weight (kg)/[height (m)^2].

    Measured: Baseline, Weeks 78 and 156

  15. Percentage of Participants With Change From Baseline in the Polyneuropathy Disability (PND) Score

    PND score is defined as I = sensory disturbances in limbs without motor impairment; II = difficulty walking without the need of a walking aid; III = one stick or one crutch required for walking; IV = two sticks or two crutches needed. V = wheelchair required or patient confined to bed. The change from Baseline values have been categorized as: improved, not changed, worsened, and unknown. Percentage of participants with changes from Baseline are presented category-wise in this outcome measure. Only categories with at least one participant with event are reported.

    Measured: Baseline, Weeks 78 and 156 and at the end of each subsequent treatment year (Week 52 of each year)

  16. Percent Change From Baseline in Global Longitudinal Strain (GLS) by Echocardiogram (ECHO) in the Cardiomyopathy-ECHO (CM-ECHO) Set

    GLS by ECHO is a measure of cardiac systolic function.

    Measured: Baseline, Weeks 78 and 156

  17. Percent Change From Baseline in GLS by ECHO in the CS3 ECHO Subgroup

    GLS by ECHO is a measure of cardiac systolic function.

    Measured: Weeks 78 and 156

  18. Change From Baseline in Transthyretin (TTR) Level

    Transthyretin protein concentration in serum was measured.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156

  19. Change From Baseline in Retinol Binding Protein 4 (RBP4) Level

    RBP4 protein concentration in serum was measured.

    Measured: Baseline (Baseline is the Baseline of the Previous Study- Study CS2), Weeks 78 and 156, and at the end of each subsequent treatment year (Week 52 of Years 4 and 5)

  20. Ctrough: Trough Plasma Concentration of ISIS 420915

    Measured: Pre-dose on Days 1, 43, 85, 120, 176, 267, 358, 449, 540, 631, 722, 813, 904, 995, 1086, 1268; Days 1359 and 1450 of Year 4; Days 1632, 1723 and 1814 of Year 5

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Jun 2014 (estimated)
  2. Study start26 Jun 2014
  3. Primary completion11 Sep 2020
  4. Study completion7 Jan 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
135 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02175004
Sponsor's protocol ID
ISIS 420915-CS3
Other IDs
2013-004561-13
Status last verified
Nov 2023
First submitted
12 Jun 2014
Last updated
18 Nov 2023
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Expanded access
Available

Publications

  • Brannagan TH, Coelho T, Wang AK, Polydefkis MJ, Dyck PJ, Berk JL, Drachman B, Gorevic P, Whelan C, Conceicao I, Plante-Bordeneuve V, Merlini G, Obici L, Plana JMC, Gamez J, Kristen AV, Mazzeo A, Gentile L, Narayana A, Olugemo K, Aquino P, Benson MD, Gertz M; NEURO-T. T. R. Open-Label Extension Investigators. Long-term efficacy and safety of inotersen for hereditary transthyretin amyloidosis: NEURO-TTR open-label extension 3-year update. J Neurol. 2022 Dec;269(12):6416-6427. doi: 10.1007/s00415-022-11276-8. Epub 2022 Jul 31.

    PubMed 35908242
  • Karam C, Brown D, Yang M, Done N, Zhu JJ, Greatsinger A, Bozas A, Vera-Llonch M, Signorovitch J. Long-term treatment effects of inotersen on health-related quality of life in patients with hATTR amyloidosis with polyneuropathy: Analysis of the open-label extension of the NEURO-TTR trial. Muscle Nerve. 2022 Oct;66(4):438-446. doi: 10.1002/mus.27675. Epub 2022 Aug 4.

    PubMed 35799473
  • Yarlas A, Lovley A, McCausland K, Brown D, Vera-Llonch M, Conceicao I, Karam C, Khella S, Obici L, Waddington-Cruz M. Early Data on Long-term Impact of Inotersen on Quality-of-Life in Patients with Hereditary Transthyretin Amyloidosis Polyneuropathy: Open-Label Extension of NEURO-TTR. Neurol Ther. 2021 Dec;10(2):865-886. doi: 10.1007/s40120-021-00268-x. Epub 2021 Aug 5.

    PubMed 34355354
  • Brannagan TH, Wang AK, Coelho T, Waddington Cruz M, Polydefkis MJ, Dyck PJ, Plante-Bordeneuve V, Berk JL, Barroso F, Merlini G, Conceicao I, Hughes SG, Kwoh J, Jung SW, Guthrie S, Pollock M, Benson MD, Gertz M; NEURO-TTR open-label extension investigators. Early data on long-term efficacy and safety of inotersen in patients with hereditary transthyretin amyloidosis: a 2-year update from the open-label extension of the NEURO-TTR trial. Eur J Neurol. 2020 Aug;27(8):1374-1381. doi: 10.1111/ene.14285. Epub 2020 May 29.

    PubMed 32343462

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Inotersen in people with FAP and Familial Amyloid Polyneuropathy, run by Ionis Pharmaceuticals, Inc. at 22 sites in 9 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 18 Nov 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 22 sites in United States, Brazil, France, Italy, Portugal and 4 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Feb 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With Treatment Emergent Adverse Events (TEAEs), Serious TEAEs, and TEAEs Related to Study Drug (time frame: From first dose of study drug up to 3 months post treatment period of 260 weeks (Up to approximately 272 weeks)). The study lists 8 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02175004, which also lists 4 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Nov 2023.

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