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Badanie mające na celu poznanie wpływu salanersen (BIIB115) na ruch i jego bezpieczeństwa u uczestników w wieku od 15 do 60 lat z rdzeniowym zanikiem mięśni (SMA), którzy są nowi w leczeniu SMA lub byli wcześniej leczeni risdiplamem (SOLAR)

29 września 2026 zaktualizowane przez: Biogen

Otwarte, randomizowane, kontrolowane placebo badanie kliniczne fazy III oceniające skuteczność i bezpieczeństwo stosowania preparatu Salanersen (BIIB115) u uczestników w wieku 15–60 lat z rdzeniowym zanikiem mięśni, którzy albo nie byli wcześniej leczeni, albo byli wcześniej leczeni risdiplamem

In this study, researchers will learn more about the effects and safety of BIIB115, also known as salanersen.

Specifically, researchers will learn more about how salanersen works in individuals with SMA who are between the ages of 15 and 60 years old. In most people living with SMA, changes to or a lack of a gene called survival motor neuron 1 (SMN1) - often referred to as gene mutations or variants - affect how this gene works. As a result, their bodies produce less SMN protein. Without enough of this protein, motor neurons and muscles cannot work properly. There is a similar gene called SMN2 that produces SMN protein, but it usually does not produce enough SMN protein on its own to make up for the changes in the SMN1 gene. Salanersen is a drug designed to help the SMN2 gene to make more working SMN protein.

In this study, there will be 2 groups of participants: a group who has never received treatment for SMA before joining this study, and a group who has been treated with risdiplam, an approved drug for SMA . Those participants must not have received any other SMA treatments before and will need to stop their risdiplam treatment for the duration of the study.

The main goal of this study is to learn more about how salanersen affects the participants' motor function. Researchers will use different tests and questionnaires to learn if motor function is changing over the study duration.

The main question researchers want to answer in this study is:

• For the group who has never been treated for SMA, how much do scores on the HFMSE movement test change at 12 months compared to the beginning of the study? The Hammersmith Functional Motor Scale - Expanded (HFMSE) has 33 activities that are scored which include sitting, lying down, walking, jumping, and more.

Researchers will also learn more about:

  • The effects on participants' motor function and how well their nerves and muscles function.
  • The effects on participants' overall sense of change and how they perform daily activities.
  • How many participants have adverse events or serious adverse events. Adverse events are health problems that may or may not be caused by the study drug.
  • How much salanersen gets into the fluid surrounding the brain and spinal cord.
  • How much salanersen gets into the blood.

This study will be done as follows:

  • First, participants will be screened to check if they can join the study. The screening period may be up to 4 weeks.
  • This is an "open-label" study. This is a study in which the participants, study doctor, and site staff will know that participants are receiving salanersen.
  • All participants will receive salanersen through an intrathecal injection, or one that is given into the fluid surrounding the brain and spinal cord.
  • Participants will receive salanersen once every year for a total of 5 times throughout the study.
  • Including screening, participants will have 17 study visits and 9 telephone calls during this study, which will last up to 61 months in total.

Przegląd badań

Status

Rekrutacyjny

Warunki

Interwencja / Leczenie

Szczegółowy opis

The primary objective of the SOLAR study is to evaluate the clinical efficacy of salanersen in participants with SMA who are treatment-naïve or previously treated with risdiplam. The secondary objective of the study is to evaluate the safety, tolerability, and pharmacokinetics (PK) of salanersen.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

90

Faza

  • Faza 3

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Kopia zapasowa kontaktu do badania

Lokalizacje studiów

      • Beijing, Chiny, 100730
        • Rekrutacyjny
        • Peking Union Medical College Hospital
    • California
      • Palo Alto, California, Stany Zjednoczone, 94304
        • Rekrutacyjny
        • Stanford University Medical Center
        • Kontakt:
          • Numer telefonu: 650-725-7622
        • Główny śledczy:
          • John Day
    • Virginia
      • Norfolk, Virginia, Stany Zjednoczone, 23507
        • Rekrutacyjny
        • Childrens Hospital of the Kings Daughter Norfolk
        • Główny śledczy:
          • Crystal Proud
        • Kontakt:
          • Numer telefonu: 757-668-6981

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

15 lat do 60 lat (Dziecko, Dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Opis

Key Inclusion Criteria:

  • Participants aged 15 to 60 years, inclusive, at the time of informed consent

  • Participants with genetic documentation of 5q Spinal Muscular Atrophy (SMA) (homozygous gene deletion or mutation or compound heterozygous mutation).

  • Participants with clinical signs and symptoms consistent with SMA.

  • Survival motor neuron 2 (SMN2) copy number ≥ 1.

  • Participants with baseline Hammersmith Functional Motor Scale - Expanded (HFMSE) total score of ≥ 10 to ≤ 54.

  • Participants who are able to sit without using support for at least 10 seconds.

  • Participants with no prior treatment with myostatin inhibitors and a willingness to remain off concurrent myostatin inhibitor therapy for the duration of the study.

  • Ambulatory and nonambulatory participants:

    • Ambulatory participants must be able to walk at least 10 meters independently without assistance and are willing and able to complete the 6 Minute Walk Test (6MWT) at Screening.
  • For participants in the treatment-naïve cohort:

    • No prior treatment with an approved SMA Disease Modifying Therapy (DMT) or an investigational drug given for the treatment of SMA.
  • For participants in the risdiplam-treated cohort:

    • Currently receiving risdiplam treatment and have been on once-daily 5 milligrams (mg) risdiplam treatment for at least 6 months prior to Screening.
    • Willing to stop risdiplam therapy for the duration of the study. The last dose of risdiplam must be taken the day before the first dose of salanersen.
    • No prior treatment with nusinersen, onasemnogene abeparvovec-xioi/onasemnogene abeparvovec-brve (OA), other approved DMTs for SMA or investigational drugs given for the treatment of SMA apart from risdiplam.

Key Exclusion Criteria:

  • Respiratory insufficiency at Screening, defined by the medical necessity for invasive or noninvasive ventilation for > 6 hours during a 24-hour period (except for nocturnal bilevel positive airway pressure).
  • Medical necessity for a gastric feeding tube, where the majority of nutrition is provided by this route, as assessed by the site Investigator at Screening.
  • History of brain or spinal cord disease or other contraindications (e.g., severe scoliosis) that would interfere with the lumbar puncture (LP) procedures, Cerebrospinal fluid (CSF) circulation, efficacy assessments, or safety assessments (including a history of hydrocephalus or implanted shunt for CSF drainage), as assessed by the Investigator.
  • Hospitalization for surgery, a pulmonary event, or nutritional support within 2 months prior to Screening or plans to undergo elective procedures or surgeries at any time after signing the Informed Consent Form (ICF) through the end of the study. Note: If prior scoliosis surgery has been performed, it must be done at least 1 year prior to Screening.
  • Presence of an active medical issue (e.g., infection, recent fracture) that would make the participant unsuitable for inclusion, as assessed by the Investigator.
  • Current enrollment or a plan to enroll in any interventional clinical study in which an investigational treatment or approved therapy for investigational use is administered within 90 days or 5 half-lives of the treatment (if known), whichever is longer, prior to Screening. This includes neuromodulation therapy such as spinal cord stimulation.

Note: Other protocol-defined inclusion/exclusion criteria will apply.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Nie dotyczy
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Treatment-Naïve Cohort

Treatment-naïve participants will receive salanersen 80 milligrams (mg) by intrathecal (IT) lumbar puncture (LP) every 12 months for a total of five doses.

Administered Intrathecally

Inne nazwy:
  • BIIB115
Eksperymentalny: Risdiplam-Treated Cohort

Risdiplam-treated participants will receive salanersen 80 mg by IT LP every 12 months for a total of five doses.

Administered Intrathecally

Inne nazwy:
  • BIIB115

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Change From Baseline in Hammersmith Functional Motor Scale - Expanded (HFMSE) Total Score in Treatment-Naïve Cohort
Ramy czasowe: At Month 12

The HFMSE is a tool used to assess motor function in individuals with SMA. Participants will be asked to complete a specific movement and are then graded on the quality and execution of that movement. Higher scores indicate higher levels of motor ability. The overall score is the sum of the scores for all 33 items, with a maximum score of 66 with higher scores depicting better ability to perform activities.

At Month 12

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Liczba uczestników z działaniami niepożądanymi (AEs) i poważnymi działaniami niepożądanymi (SAEs)
Ramy czasowe: Do dnia 1825
Do dnia 1825
Stężenie Salanersen w płynie mózgowo-rdzeniowym (CSF)
Ramy czasowe: Do 1460 dnia
Do 1460 dnia
Stężenie salanersen w surowicy
Ramy czasowe: Do Dnia 1825
Do Dnia 1825
Percentage of Participants With ≥ 3-Point Change From Baseline in HFMSE Total Score
Ramy czasowe: Up to Day 1825

The HFMSE is a tool used to assess motor function in individuals with SMA. Participants will be asked to complete a specific movement and are then graded on the quality and execution of that movement. Higher scores indicate higher levels of motor ability. The overall score is the sum of the scores for all 33 items, with a maximum score of 66 with higher scores depicting better ability to perform activities.

Up to Day 1825
Percentage of Participants With ≥ 2-Point Change From Baseline in Revised Upper Limb Module (RULM) Total Score
Ramy czasowe: Up to Day 1825

The RULM is developed to assess upper limb functional abilities of participants with SMA. This test consists of a total of 20 upper limb performance items that are reflective of activities of daily living. The RULM is scored from 0 to 37 points, with higher scores indicating better function.

Up to Day 1825
Percentage of Participants With ≥ 30-Meter Change From Baseline in 6-Minute Walk Test (6MWT) Distance (Ambulatory Participants Only)
Ramy czasowe: Up to Day 1825

The 6MWT is a submaximal exercise test used to assess an individual's functional exercise capacity. It measures the distance covered in 6 minutes on a flat, hard surface, providing valuable information about aerobic capacity and endurance.

Up to Day 1825
Change From Baseline in HFMSE Total Score
Ramy czasowe: Up to Day 1825

The HFMSE is a tool used to assess motor function in individuals with SMA. Participants will be asked to complete a specific movement and are then graded on the quality and execution of that movement. Higher scores indicate higher levels of motor ability. The overall score is the sum of the scores for all 33 items, with a maximum score of 66 with higher scores depicting better ability to perform activities.

Up to Day 1825
Change From Baseline in RULM Total Score
Ramy czasowe: Up to Day 1825

The RULM is developed to assess upper limb functional abilities of participants with SMA. This test consists of a total of 20 upper limb performance items that are reflective of activities of daily living. The RULM is scored from 0 to 37 points, with higher scores indicating better function.

Up to Day 1825
Change From Baseline in Total 6MWT Distance (Ambulatory Participants Only)
Ramy czasowe: Up to Day 1825

The 6MWT is a submaximal exercise test used to assess an individual's functional exercise capacity. It measures the distance covered in 6 minutes on a flat, hard surface, providing valuable information about aerobic capacity and endurance.

Up to Day 1825
Change From Baseline in Compound Muscle Action Potential (CMAP) Amplitudes
Ramy czasowe: Up to Day 1825

CMAP is a well validated method for tracking disease progression in neuromuscular disorders such as SMA and amyotrophic lateral sclerosis and has been proposed as a potential biomarker of a therapeutic effect in SMA. CMAPs will be performed for the following nerve-muscle pairs: ulnar-abductor digiti minimi and peroneal-tibialis anterior.

Up to Day 1825
Patient Global Impression of Change (PGI-C) Score
Ramy czasowe: Up to Day 1825

PGI-C is a self-reported 7-point scale evaluating the participant's perception of change in disease state since baseline. The scale ranges from 1 to 7, where 1= very much improved; 2= much improved; 3= minimally improved; 4= no change; 5= minimally worse; 6= much worse; or 7= very much worse. Lower scores indicate clinical improvement, and higher scores indicate disease worsening.

Up to Day 1825
Change From Baseline in SMA Independence Scale - Upper Limb Module (SMAIS-ULM)
Ramy czasowe: Up to Day 1825

The SMAIS-ULM is a validated tool designed to assess the level of independence in daily activities related to upper limb functionality for individuals with Type II and nonambulant Type III SMA. The 22 items assess upper limb focused tasks across 5 domains of typical daily activities (bathing/hygiene, dressing, eating/drinking, picking up/moving objects, and other tasks) scored on a 3-point scale (0 = I cannot do this at all without help; 1 = I need some help; and 2 = I do not need help). Higher scores indicate greater independence.

Up to Day 1825

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Śledczy

  • Dyrektor Studium: Medical Director, Biogen

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

8 września 2026

Zakończenie podstawowe (Szacowany)

23 czerwca 2028

Ukończenie studiów (Szacowany)

22 czerwca 2032

Daty rejestracji na studia

Pierwszy przesłany

26 lutego 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

26 lutego 2026

Pierwszy wysłany (Rzeczywisty)

3 marca 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

2 października 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

29 września 2026

Ostatnia weryfikacja

1 września 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • 277SM303
  • 2025-524054-34 (Inny identyfikator: EU Trial (CTIS) Number)
  • 2025 (Grant/umowa NIH USA)

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

TAK

Opis planu IPD

In accordance with Biogen's Clinical Trial Transparency and Data Sharing Policy on https://www.biogentrialtransparency.com/

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Tak

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .