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A Study to Investigate Long-term Safety and Tolerability of Frexalimab in Participants With Multiple Sclerosis

2026年11月10日 更新者：Sanofi

A Phase 3 Extension Study to Investigate Long-term Safety and Tolerability of Frexalimab in Participants With Multiple Sclerosis.

Study LTS18002 is a global, multicenter, open-label (OL), Phase 3, long-term safety and efficacy extension study.

The purpose of this study is to provide continued access to frexalimab for participants with MS, and to evaluate the long-term safety and efficacy profile of frexalimab. This study will monitor delayed AEs, assess the durability of safety findings and characterize any emerging safety signals that may develop over an extended follow up period.

Study details include:

  • The study duration will be up to 4 years.

  • The OL treatment duration will be up to 96 weeks (corresponding to approximately 2 years) per participant.

  • There is an additional 24 weeks of safety follow up from the last dose of OL frexalimab for all participants (safety follow-up period/EOS: 4, 12 and 24 weeks after last investigational medicinal product(IMP) or OL frexalimab administration).

  • The number of visits over the 2-year duration will be dependent on subgroup assignment which is based on parent study from which the participant has entered the LTS18002 :

    1. ACT16877, EFC17504, EFC18098, and ASY22814 participants

      • Will have on-site visits every 12 weeks (9 visits)

        • Additionally, there will be 16 on-site visits for OL frexalimab administration (Week 4, 8, 16, 20, 28, 32, 40, 44, 52, 56, 64, 68, 76, 80, 88, and 92) for all participants EXCEPT those entering from EFC18098 (frexalimab open label administration is conducted at home via SC large volume (OBDS VT) device)

          • There will be 3 follow up visits beginning 4 weeks after the last administration of OL frexalimab

            • Home administration is allowed for participants from ACT16877, based on Investigator judgement, participant/caregiver training and local availability. Home nurse services are mandatory for at-home administration.

              • Home nurse services for at home administration may be considered for EFC17504 participants after Week 24 administration of OL frexalimab, based on availability. Participants that have initiated OL frexalimab via home administration during the parent study may continue to receive it in this manner.

                • NOTE: For participants from EFC17504, all on-site visits including monthly IMP administrations will include safety labs (biochemistry, hematology liver chemistry, and immunoglobulins) and physical exams

    2. EFC17919A/B participants

      • Will have on site visits every 12 weeks (9 visits)

        • Will have a total of 16 visits for OL frexalimab administration (Week 4, 8, 16, 20, 28, 32, 40, 44, 52, 56, 64, 68, 76, 80, 88, and 92)

          • Additionally, there will be up to 3 visits for administration of DB treatment (until results become available and randomization assignment availability).

            • Home nurse services for at home administration may be considered for EFC17919A/B participants after Week 24 administration of OL frexalimab, based on availability.

NOTE: all on-site visits including monthly IMP administrations will include safety labs (biochemistry, hematology liver chemistry, and immunoglobulins) and physical exams.

調査の概要

状態

まだ募集していません

条件

介入・治療

研究の種類

介入

入学 (推定)

2500

段階

  • フェーズ 3

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

  • 名前：Trial Transparency email recommended (Toll free for US & Canada)
  • 電話番号：option 6 800-633-1610
  • メール：Contact-US@sanofi.com

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年～60年 (大人)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

- Participants with relapsing multiple sclerosis(RMS) or non-relapsing secondary progressive multiple sclerosis(nrSPMS) who completed, on IMP, the Phase 2 ACT16877 study, or one of the four Phase 3 frexalimab studies in MS indication (EFC17919A and EFC17919B, EFC17504, EFC18098), or planned Phase 2 biomarker ASY22814.

Exclusion Criteria:

  • If IMP discontinuation criteria are met as per guidance
  • The participant is at risk for or has a persistent chronic, active (including fever ≥38°C and clinically unstable), recurring systemic infection or opportunistic infections (eg, PML See Appendix in protocol) as judged by the Investigator.
  • Notably low immunoglobulin G(IgG) levels, defined as a level that is 20% below the LLN, and/or notably low IgM level, defined as a level 10% below the LLN.
  • Participants who developed clinically relevant cardiovascular, hepatic, endocrine, neuropsychiatric or other major systemic disease making implementation of the protocol or interpretation of the study results difficult or that would put the participant at risk by participating in the extension study, as judged by the Investigator.
  • Clinical evidence, suspicion or significant risk for thromboembolic events, as well as myocardial infarction, stroke, and/or antiphospholipid syndrome and any participants requiring antithrombotic treatment.
  • Continued need for/chronic use of a prohibited concomitant medication.
  • Suicidal risk as per C-SSRS: if a participant scores "yes" on items 4 or 5 of the Suicidal Ideation Section, or "yes" on any item of the Suicidal Behavior Section.

The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

  • 主な目的：処理
  • 割り当て：非ランダム化
  • 介入モデル：並列代入
  • マスキング：なし（オープンラベル）

武器と介入

参加者グループ / アーム
介入・治療
実験的：Frexalimab SC (OL)

Participants will be administered frexalimab subcutaneous
薬：Frexalimab

Pharmaceutical form:Solution for injection-Route of administration:SC

他の名前：
  • SAR441344
薬：Frexalimab

Pharmaceutical form:Solution for infusion-Route of administration:IV

他の名前：
  • SAR441344
薬：MRI contrast-enhancing agents

Route of administration:IV
実験的：Frexalimab IV (OL)

Participants will be administered frexalimab intravenously
薬：Frexalimab

Pharmaceutical form:Solution for injection-Route of administration:SC

他の名前：
  • SAR441344
薬：Frexalimab

Pharmaceutical form:Solution for infusion-Route of administration:IV

他の名前：
  • SAR441344
薬：MRI contrast-enhancing agents

Route of administration:IV
実験的：Frexalimab (DB)

For EFC17919A/B parent study participants: at Opt-in visit participants will continue to be administered f rexalimab through unblinding visit. Participants will receive placebo tablet once daily until the unblinding visit.
薬：Frexalimab

Pharmaceutical form:Solution for injection-Route of administration:SC

他の名前：
  • SAR441344
薬：Frexalimab

Pharmaceutical form:Solution for infusion-Route of administration:IV

他の名前：
  • SAR441344
薬：MRI contrast-enhancing agents

Route of administration:IV

薬：Teriflunomide Placebo

Pharmaceutical form:Tablet-Route of administration:Oral

薬：Cholestyramine

Route of administration:oral

薬：charcoal

Route of administration:oral
アクティブコンパレータ：Teriflunomide (DB)

For EFC17919A/B parent study participants: at Opt-in visit participants will continue to receive teriflunomide tablet. The placebo will be administered to participants at the same infusion rate and duration as for frexalimab from the opt-in visit until availability of results and unblinding.
薬：MRI contrast-enhancing agents

Route of administration:IV

薬：Cholestyramine

Route of administration:oral

薬：charcoal

Route of administration:oral

薬：Frexalimab Placebo

Pharmaceutical form:Solution for infusion-Route of administration:IV

薬：Teriflunomide

Pharmaceutical form:Tablet-Route of administration:Oral

この研究は何を測定していますか？

主要な結果の測定

結果測定
メジャーの説明
時間枠
Number of participants with Adverse Events(AEs)
時間枠：up to to approximately 2.5 years since last participant in

Number of participants with Adverse Events(AEs), serious adverse event(SAEs), AEs leading to permanent study intervention discontinuation, adverse event of special interest(AESIs), local tolerability, clinically significant abnormalities in laboratory tests, Columbia-Suicide Severity Rating Scale(C-SSRS)
up to to approximately 2.5 years since last participant in

二次結果の測定

結果測定
メジャーの説明
時間枠
Participants from EFC17919A, EFC17919B, and EFC17504 studies only: time to onset of 6-month composite confirmed disability worsening(cCDW) for RMS or composite confirmed disability progression(cCDP) for nrSPMS
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
Time to onset of individual components of the composite, confirmed over 3 months or 6 months EDSS for all prior study participants 9-HPT, T25FW test (participants rolling over from EFC17504, EFC17919A, and EFC17919B)
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
Progression independent of relapse activity defined as the time to onset of 6-month cCDW
時間枠：up to to approximately 2.5 years since last participant in

Progression independent of relapse activity defined as the time to onset of 6-month cCDW, defined by either no prior relapse or an onset more than 90 days after the start date of the last Investigator reported relapse (participants rolling over from EFC17919A and EFC17919B)
up to to approximately 2.5 years since last participant in
Number of new and/or enlarging T2-hyperintense lesions per year as detected by MRI
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
Total number of new GdE T1 lesions per year as detected by MRI
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
Change from baseline at scheduled visits in total volume of T2-hyperintense lesions as detected by brain MRI
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
ARR assessed by confirmed protocol defined relapses
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
antidrug antibodys(ADAs) incidence
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in
Change from baseline in serum immunoglobulin(Ig) levels
時間枠：up to to approximately 2.5 years since last participant in
up to to approximately 2.5 years since last participant in

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

Sanofi

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2027年2月15日

一次修了 (推定)

2031年5月16日

研究の完了 (推定)

2031年5月16日

試験登録日

最初に提出

2026年11月3日

QC基準を満たした最初の提出物

2026年11月10日

最初の投稿 (実際)

2026年11月12日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月12日

QC基準を満たした最後の更新が送信されました

2026年11月10日

最終確認日

2026年11月1日

詳しくは

本研究に関する用語

追加の関連 MeSH 用語

その他の研究ID番号

  • LTS18002
  • 2026-525688-41 (レジストリ識別子：CTIS)

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

はい

IPD プランの説明

Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

はい

米国FDA規制機器製品の研究

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。

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