Foetal neural stem cells transplantation in progressive multiple sclerosis

2024-511028-15-00 Protocol STEMS2 Therapeutic exploratory (Phase II) Ongoing, recruiting

Start 20 Nov 2025 · Status Ongoing, recruiting · 1 EU/EEA countries · 7 sites · Protocol STEMS2

Overview

Sponsor-declared trial summary

Phase Therapeutic exploratory (Phase II)
Status Ongoing, recruiting
Participants planned 86
Countries 1
Sites 7

Progressive Multiple Sclerosis

To evaluate the therapeutic efficacy of hfNPCs (two intrathecal (IT) administrations of 200 x 10^6±10% cells, six months apart from each other) compared to sham procedure in patients with PMS.

Key facts

Sponsor
Ospedale San Raffaele S.r.l.
Participant type
Patients
Age range
18-64 years, 65+ years
Gender
Male and Female
Therapeutic area
Diseases [C] - Nervous System Diseases [C10]
Trial duration
20 Nov 2025 → ongoing
Decision date (initial)
2024-08-12
Transition trial
No
Low-intervention
No
Rare-disease indication
No
Vulnerable population
Yes
Funding sources
Fondazione Italiana Sclerosi Multipla (FISM)

Trial design

CTIS Part I — objectives, methods, condition coding

Main objective

Scope: Efficacy, Safety

To evaluate the therapeutic efficacy of hfNPCs (two intrathecal (IT) administrations of 200 x 10^6±10% cells, six months apart from each other) compared to sham procedure in patients with PMS.

Secondary objectives 1

  1. To evaluate the safety and to better assess efficacy of hfNPCs (two IT administration of 200 x 10^6±10% cells, six months apart from each other) in patients with PMS.

Conditions and MedDRA coding

Progressive Multiple Sclerosis

VersionLevelCodeTermSystem organ class
26.1 PT 10053395 Progressive multiple sclerosis 100000004852

Study design 4 periods

#TitleAllocationBlindingRoles blindedArms
1 Screening
Includes a 30-day period (from D-40 to D-7) to complete the assessments required for Screening.
Not Applicable None
2 Pre-Treatment
A 7-day period for pre-treatment and treatment allocation process
Randomised Controlled Double [{"id":178205,"code":4,"name":"Analyst"},{"id":178206,"code":1,"name":"Subject"}] hfNPC transplantation: Participants will receive hfNPC IT transplantation performed twice, six months apart from each other
Sham procedure: Participants will receive sham procedure performed twice, six months apart from each other
3 Treatment
2 days (two hfNPC IT transplantation or sham procedure performed twice, six months apart from each other), followed by 24 weeks of treatment with tacrolimus after each administration / procedure.
Randomised Controlled Double [{"id":178209,"code":4,"name":"Analyst"},{"id":178208,"code":1,"name":"Subject"}] hfNPC transplantation: Participants will receive hfNPC IT transplantation performed twice, six months apart from each other
Sham procedure: Participants will receive sham procedure performed twice, six months apart from each other
4 Follow-up
96-week post-treatment follow-up period
Randomised Controlled Double [{"id":178212,"code":4,"name":"Analyst"},{"id":178211,"code":1,"name":"Subject"}] hfNPC transplantation: Participants will receive hfNPC IT transplantation performed twice, six months apart from each other
Sham procedure: Participants will receive sham procedure performed twice, six months apart from each other

Eligibility criteria

Principal inclusion / exclusion criteria as submitted by sponsor

Inclusion criteria 8

  1. Participant is willing and able to give informed consent for participation in the trial
  2. Male and Female, between 18 and 65 years inclusive
  3. Diagnosed with PMS (as per the 2017 revised McDonald criteria1)
  4. EDSS between 3.0 and 8.0 at screening
  5. Failure (confirmed disease progression despite an adequate duration of treatment of at least two years), intolerance (occurrence of AEs resulting in the discontinuation of the drug as per clinical practice), or ineligibility to the approved therapies according to the disease course
  6. Ability to take oral medication and be willing to adhere to the study procedures
  7. For females of reproductive potential: use of highly effective contraception for at least 1 month prior to screening and agreement to use such a method during study participation
  8. For males of reproductive potential: use of an effective strategy of birth control and abstention from sperm donation, for the entire duration of the study.

Exclusion criteria 12

  1. Inability to complete the MRI scan (e.g., cardiac pacemaker, metallic implants in high-risk areas, gadolinium intolerance, or history of claustrophobia that would prevent completion of all protocol scheduled MRI)
  2. Use of prior/concomitant therapy in the following time frame (no wash out is required for interferon beta, glatiramer acetate or dimethyl fumarate treatments although use is not permitted on or after Day 1): a) Siponimod, fingolimod, natalizumab 3 months b) Corticosteroids, 1 months c) Teriflunomide no time restriction if accelerated elimination procedure is done; in case of no accelerated elimination procedure, 3 months d) Mildly to moderately immunosuppressive /chemotherapeutic medications such azathioprine, mycophenolate mofetil, and methotrexate, 3 months e) Highly immunosuppressive/chemotherapeutic medications, cyclophosphamide, 6 months f) Ocrelizumab and rituximab, 6 months g) Cladribine, 2 years from first pills h) Alemtuzumab, 4 years from last infusion i) Other MS-disease-modifying therapies 5 half-lives or until end of pharmacodynamics activity, whichever is longer.
  3. The participation in the study is also not permitted to employees of the investigational site with direct involvement in the study or in other studies under the direction of that Investigator, as well as family members of the employees or the Investigator
  4. Clinical relapse and/or radiological features suggestive of inflammatory activity in the two years preceding the screening
  5. Female participant who is pregnant, lactating or planning pregnancy during the course of the trial, or of childbearing age who are not willing to use a contraceptive method effective for the entire duration of the study
  6. Known allergic reactions, intolerance, or contraindications to any medication, treatments and procedures that will be used in the study
  7. Persistent chronic or active recurring infection requiring treatment with antibiotics, antivirals, or antifungals
  8. History of infection with human immunodeficiency virus (HIV)
  9. History of active or latent tuberculosis (unless the participant has completed a full course of anti-tuberculosis therapy or it is documented by a specialist that the participant has been adequately treated and can begin treatment with an immunosuppressive agent)
  10. Participants at risk of developing or having reactivation of hepatitis: results at screening for serological markers for hepatitis B and C indicating acute or chronic infection
  11. Any other conditions or diagnosis, both physical or psychological, or physical exam finding that would adversely affect participation or Investigational Medicinal Product (IMP) administration in this study, as judged by the Investigator
  12. Male participant of reproductive potential who is not willing to use an effective strategy of birth control and/or to abstain from sperm donation.

Endpoints

Primary and secondary outcome measures (English text)

Primary endpoints 1

  1. Change in whole brain volume evaluated through magnetic resonance imaging (MRI) in 96 weeks (W) of follow-up

Secondary endpoints 7

  1. Rate and nature of the adverse events, classified according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 and attributed to the investigational medicinal product accordingly to national cancer institute (NCI) guidelines of adverse event (AE) reporting requirements.
  2. Percentage change in brain grey matter volume evaluated through MRI in 96 weeks of follow-up.
  3. Percentage change in brain white matter volume evaluated through MRI in 96 weeks of follow-up.
  4. Proportion of patients with no evidence of 24-weeks confirmed disability progression (defined as progression by 1 step on the Expanded Disability Status Scale (EDSS) in patients with EDSS ≤ 5.5 or of 0.5 EDSS steps in patients with EDSS ≥ 6, confirmed after 24 weeks interval) in 96 weeks of follow-up
  5. Proportion of patients with no evidence of progression (defined as no progression sustained for at least 24 weeks on all of the following three components: confirmed disability progression; ≥20% increase in timed 25-foot walk test [T25FWT]; ≥20% increase in nine-hole peg test [9HPT]. The T25FWT will not be considered for patients who are unable to complete the test at baseline [EDSS score ≥ 7.0] in 96 weeks of follow-up.
  6. Proportion of patients with no active disease, defined as no clinical relapses, no enlarging or new T2 hyperintense lesions, and no gadolinium (Gd+)-enhancing lesions in 96 weeks of follow-up.
  7. Change in cognitive function as measured by the symbol digit modalities test (SDMT) in 96 weeks of follow-up.

Investigational products

Investigational medicinal products (IMPs), comparators, placebo, auxiliary

Test 2

Tacrolimus

SCP133064 · ATC

Active substance
Tacrolimus
Substance synonyms
TACROLIMUS ANHYDROUS
Route of administration
ORAL
Max daily dose
0.1 mg/Kg milligram(s)/kilogram
Max total dose
37.1 mg/Kg milligram(s)/kilogram
Max treatment duration
53 Week(s)
Authorisation status
Authorised
ATC code
L04AD02 — TACROLIMUS
Marketing authorisation
-
Paediatric formulation
No
Orphan designation
No
Modified vs. Marketing Authorisation
No

human fetal neural precursor cells

PRD11212547 · Product

Active substance
Human Neuronal Progenitor/Stem Cells
Pharmaceutical form
SOLUTION FOR INFUSION
Route of administration
INTRATHECAL
Max daily dose
200 million organisms million organisms
Max total dose
400 million organisms million organisms
Max treatment duration
2 Day(s)
Authorisation status
Not Authorised
MA holder
OSPEDALE SAN RAFFAELE S.R.L.
Paediatric formulation
No
Orphan designation
No

Sponsors and contacts

Sponsor organisations, regulatory contacts, third parties

Ospedale San Raffaele S.r.l.

Sponsor organisation
Ospedale San Raffaele S.r.l.
Address
Via Olgettina 60
City
Milan
Postcode
20132
Country
Italy

Scientific contact point

Organisation
Ospedale San Raffaele S.r.l.
Contact name
Neurology Unit

Public contact point

Organisation
Ospedale San Raffaele S.r.l.
Contact name
Neurology Unit

Third parties 6

OrganisationCity, countryDuties
Iqvia Solutions Italy S.r.l.
ORG-100050605
Milan, Italy Code 8
Biorep S.r.l.
ORG-100028828
Milan, Italy Other
Azienda Ospedaliera S Gerardo Di Monza Laboratorio Per La Terapia Cellulare E Genica Stefano Verri
ORG-100021741
Monza, Italy Code 14
Iqvia Rds Italy S.r.l.
ORG-100038785
Milan, Italy On site monitoring, Code 12, Code 5
Mediolanum Cardio Research S.r.l.
ORG-100010094
Milan, Italy Data management, E-data capture
Soluzioni Salute Informatica S.r.l.
ORG-100051349
Milan, Italy Other

Locations

1 EU/EEA country · 7 investigational sites

By country

CountryMS statusPlanned subjectsSites
Italy Ongoing, recruiting 86 7
Rest of world 0

Investigational sites

Italy

7 sites · Ongoing, recruiting
IRCCS Foundation Istituto Neurologico Carlo Besta
Malattie Neuromuscolari e Autoimmuni, Via Giovanni Celoria 11, 20133, Milan
Ospedale San Raffaele S.r.l.
Division of Neuroscience, Via Olgettina 60, 20132, Milan
Fondazione IRCCS San Gerardo Dei Tintori
Clinica Neurologica, Via Giovanni Battista Pergolesi 33, 20900, Monza
Congregazione Delle Suore Infermiere Dell'Addolorata
U.O.C. di Neurologia e Centro Sclerosi Multiple, Via Dante Alighieri 11, 22100, Como
Fondazione Per La Ricerca Ospedale Maggiore
Neurological Sciences, Piazza Oms 1, 24127, Bergamo
ASST Grande Ospedale Metropolitano Niguarda
Neuroscienze, Piazza Dell'ospedale Maggiore 3, 20162, Milan
Fondazione Istituto Neurologico Nazionale Casimiro Mondino
U.O. Sclerosi Multipla, Via Casimiro Mondino 2, 27100, Pavia

Country notifications

Trial-start, recruitment-start, end and early-termination notifications submitted per Member State

Country Trial startTrial end Recruitment startRecruitment end Early termination
Italy 2025-08-04 2025-08-06

Oversight and notifications

Regulatory notifications under CTR Articles 38, 52, 53, 54 and 77

Temporary halts 1 · Art. 38 CTR

Temporary halt TH-98128

Halt date
2025-09-08
Planned restart
2025-11-30
Member states concerned
Italy
Publication date
2025-09-17
Reason
Medicinal Product related
Explanation
The enrolment halt has been deemed necessary as a precautionary measure: the cell factory manufacturing the IMP cannot guarantee IMP provision for a limited amount of time due to extraordinary maintenance activities for their infrastructure.
There is no risk/benefit or IMP quality impact deriving from this occurrence.
Follow-up measures
As of 08 September 2025, there are no patients on treatment. Subjects enrolled so far were determined as screening failures and not treated with IMP.
As precautionary measure, no new subjects will be enrolled during the halt period to avoid possible constraints with IMP supply while works at the facility are ongoing. The enrolment halt will be lifted as soon as the facility confirms IMP production can be guaranteed as per clinical plan.
Benefit-risk balance changed
No
Treatment stopped
No

Results and documents

Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial

Documents 19 files

Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.

TypeTitleVersion
Protocol (for publication) D1_Protocol Clarifications Letter_red san N/A
Protocol (for publication) D1_Protocol_2024-511028-15-00_red_san 1.2
Protocol (for publication) D4_Patient-facing_9HPT_IT_2024-511028-15-00_for publication placeholder N/A
Protocol (for publication) D4_Patient-facing_HADS_IT_2024-511028-15-00_for publication placeholder N/A
Protocol (for publication) D4_Patient-facing_MSIS29_IT_2024-511028-15-00_for publication placeholder 2.0
Protocol (for publication) D4_Patient-facing_T25FWT_IT_2024-511028-15-00_for publication placeholder N/A
Recruitment arrangements (for publication) K1_Recruitment arrangements_San 1.0
Recruitment arrangements (for publication) K2_ Recruitment material Dr to Dr letter_Red_San 1.1
Subject information and informed consent form (for publication) L1 SIS and ICF_Main_ adults_Red-San 1.3
Subject information and informed consent form (for publication) L2 _Other subject information material_Patient_card _Rad_San 1.0
Subject information and informed consent form (for publication) L2_Other subject information material_GP letter_Red_San 1.1
Subject information and informed consent form (for publication) L2_SIS and ICF Future research_Red_San 1.1
Subject information and informed consent form (for publication) L2_SIS and ICF Pregnancy Follow-up_Red_San 1.0
Subject information and informed consent form (for publication) L2_SIS and ICF Privacy_Red_San 1.0
Summary of Product Characteristics (SmPC) (for publication) E2_SmPC_tacrolimus N/A
Synopsis of the protocol (for publication) D1_Layperson synopsis_EN_2024-511028-15-00 1.0
Synopsis of the protocol (for publication) D1_Layperson synopsis_IT_2024-511028-15-00 1.0
Synopsis of the protocol (for publication) D1_Protocol synopsis_EN_2024-511028-15-00 1.1
Synopsis of the protocol (for publication) D1_Protocol synopsis_IT_2024-511028-15-00 1.1

Application history

8 submissions — initial application plus substantial / non-substantial modifications

#TypeCodeSubmittedReference MSConclusionDecision date
1 INITIAL IN 2024-03-29 Italy Acceptable
2024-08-08
2024-08-12
2 NON SUBSTANTIAL MODIFICATION NSM-1 2024-09-27 Italy Acceptable
2024-08-08
2024-09-27
3 SUBSTANTIAL MODIFICATION SM-1 2024-11-11 Italy Acceptable 2025-02-25
4 NON SUBSTANTIAL MODIFICATION NSM-2 2025-03-18 Italy Acceptable 2025-03-18
5 SUBSTANTIAL MODIFICATION SM-2 2025-10-10 Italy Acceptable
2025-11-18
2025-11-19
6 NON SUBSTANTIAL MODIFICATION NSM-3 2026-01-14 Italy Acceptable
2025-11-18
2026-01-14
7 SUBSTANTIAL MODIFICATION SM-3 2026-01-22 Italy Acceptable 2026-03-04
8 NON SUBSTANTIAL MODIFICATION NSM-4 2026-04-02 Italy Acceptable 2026-04-02