ATLG Levels in Autologous HSCT for Multiple Sclerosis

NCT07635693 | Recruiting

• 2 other identifiers: ATLG-MS4332
• Study Type: observational
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

This is a prospective, observational, biological, multicenter study to investigate IR profile, ATLG dynamics, main HSCT and disease outcomes in MS. This study will provide a preliminary descriptive evaluation of key study parameters, including ATLG pharmacokinetics and immune reconstitution trends, as well as an initial assessment of variability (e.g., dispersion of immunological biomarkers), to support the interpretation of results and the design of future studies. Since this is an observational study, no clinical decision will be made, and the interim analysis will not have an impact of the study conduction, and it will not be a stopping rule.

Conditions

Multiple Sclerosis; Autologous Hematopoietic Stem Cell Transplant; ATLG

Outcome Measures

Primary Outcomes (2)

• Investigate immune status in correlation with ATLG

  Longitudinal IR monitoring (T/B/NK lymphocyte subpopulations including naïve- memory- stem/memory- regulatory subsets, cytokine profile, NFL/Macrophages) on PB

  before mobilization, before conditioning, +1/3/6/12 months after HSCT.

• Investigate immune status in correlation with ATLG

  Assessment of ATLG levels \& kinetics

  before and 30' after the end of ATLG dose, day0, day1, weekly for 4 weeks.

Secondary Outcomes (7)

• Assess clinically relevant viral infections in correlation with viral specific IR

  before mobilization, +1 month after HSCT within the first year after HSCT.

• To assess HSCT and neurological outcomes

  at 100 days and 1-year

• Assessment of Progression Free Survival (PFS)

  at 1-year

• Assessment of Overall survival (OS)

  At 1 year

• neurological status- Expanded Disability Status Scale (EDSS)

  at 100 days, 6 months and 1-year

Study Arms (1)

Multiple Sclerosis patients treated with autologous HSCT as standard of care

The study will involve 20 Multiple Sclerosis (MS) patients, treated with autologous HSCT as standard-of-care according to guidelines and consensus recommendations. Autologous Hematopoietic stem cell transplantation (HSCT) is considered a standard-of-care intervention in the following selected MS patients: RRMS who have failed to respond to one or more high-efficacy Disease modifying therapies (DMTs) or progressive MS with superimposed inflammatory activity, or aggressive forms of MS where rapid neurological decline occurs early in the disease course.

Drug: ATLG administration

Interventions

ATLG administration DRUG

Patients will receive standard conditioning regimen (BEAM or cyclophosphamide) and ATLG (total dose 30 mg/kg over 3 days: 10 mg/kg on days -3, -2 and -1).

Multiple Sclerosis patients treated with autologous HSCT as standard of care

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

The study will involve 20 MS patients, treated with autologous HSCT as standard-of-care according to guidelines and consensus recommendations. Autologous HSCT is considered a standard-of-care intervention in the following selected MS patients: RRMS who have failed to respond to one or more high-efficacy DMTs or progressive MS with superimposed inflammatory activity, or aggressive forms of MS where rapid neurological decline occurs early in the disease course. Patients will receive standard conditioning regimen (BEAM or cyclophosphamide) and ATLG (total dose 30 mg/kg over 3 days: 10 mg/kg on days -3, -2 and -1).

You may qualify if:

• Participant is willing and able to give informed consent for participation in the study.
• Adult patients (age \>/= 18y)
• Diagnosis of MS
• Confirmed program of autologous HSCT according to standard EBMT indications (any conditioning regimen considered standard, BEAM or Cyclophosphamide)
• ATLG (total dose 30 mg/kg over 3 days: 10 mg/kg on days -3, -2 and -1) in the conditioning regimen.

You may not qualify if:

• Subjects that did not accept to sign the informed consent.
• Use of ATG.
• Contraindications to HSCT procedures (including pregnancy and breast feeding, uncontrolled active infections)

Sponsors & Collaborators

• Ciceri Fabio: lead

Study Sites (1)

IRCCS Ospedale San Raffaele

Milan, Italy, 20132, Italy

RECRUITING

Related Publications (15)

• Iacobelli S; EBMT Statistical Committee. Suggestions on the use of statistical methodologies in studies of the European Group for Blood and Marrow Transplantation. Bone Marrow Transplant. 2013 Mar;48 Suppl 1:S1-37. doi: 10.1038/bmt.2012.282.

  PMID: 23462821 BACKGROUND

• Richter J, Gagelmann N, Fischbach F, Rathje K, Pfeffer LK, Fehse B, Badbaran A, Berger SC, Krause R, Klyuchnikov E, Wolschke C, Lueck C, Ayuk F, Friese MA, Heesen C, Kroger N. Comparison of anti-human T cell globulins on immune reconstitution and early infections after autologous transplant in patients with multiple sclerosis. Bone Marrow Transplant. 2026 Feb;61(2):172-178. doi: 10.1038/s41409-025-02730-y. Epub 2025 Nov 27.

  PMID: 41310182 BACKGROUND

• Greco R, Saccardi R, Ponzano M, Badoglio M, Helbig G, Smilowski M, Mariottini A, Burman J, Carlson K, Kazmi M, Muraro PA, Gabriel I, Withers B, Massey J, Varaldo R, Inglese M, Sanz J, Gil-Perotin S, Sharrack B, Roldan E, Nozzoli C, Signori A, Sormani MP, Alexander T, Snowden JA. BEAM/ATG or cyclophosphamide/ATG as conditioning regimen in autologous haemopoietic stem cell transplantation for multiple sclerosis: a retrospective analysis of the EBMT autoimmune diseases working party. Bone Marrow Transplant. 2025 Dec;60(12):1628-1634. doi: 10.1038/s41409-025-02715-x. Epub 2025 Sep 29.

  PMID: 41023426 BACKGROUND

• Snowden JA, Badoglio M, Labopin M, Giebel S, McGrath E, Marjanovic Z, Burman J, Moore J, Rovira M, Wulffraat NM, Kazmi M, Greco R, Snarski E, Kozak T, Kirgizov K, Alexander T, Bader P, Saccardi R, Farge D; European Society for Blood and Marrow Transplantation (EBMT) Autoimmune Diseases Working Party (ADWP); EBMT Paediatric Working Party (PWP); Joint Accreditation Committee of the International Society for Cellular Therapy (ISCT); EBMT (JACIE). Evolution, trends, outcomes, and economics of hematopoietic stem cell transplantation in severe autoimmune diseases. Blood Adv. 2017 Dec 20;1(27):2742-2755. doi: 10.1182/bloodadvances.2017010041. eCollection 2017 Dec 26.

  PMID: 29296926 BACKGROUND

• Noviello M, Forcina A, Veronica V, Crocchiolo R, Stanghellini MT, Carrabba M, Greco R, Vago L, Giglio F, Assanelli A, Carbone MR, Magnani Z, Crippa F, Corti C, Bernardi M, Peccatori J, Bordignon C, Ciceri F, Bonini C, Bondanza A. Early recovery of CMV immunity after HLA-haploidentical hematopoietic stem cell transplantation as a surrogate biomarker for a reduced risk of severe infections overall. Bone Marrow Transplant. 2015 Sep;50(9):1262-4. doi: 10.1038/bmt.2015.132. Epub 2015 Jun 15. No abstract available.

  PMID: 26076126 BACKGROUND

• Retiere C, Willem C, Guillaume T, Vie H, Gautreau-Rolland L, Scotet E, Saulquin X, Gagne K, Bene MC, Imbert BM, Clemenceau B, Peterlin P, Garnier A, Chevallier P. Impact on early outcomes and immune reconstitution of high-dose post-transplant cyclophosphamide vs anti-thymocyte globulin after reduced intensity conditioning peripheral blood stem cell allogeneic transplantation. Oncotarget. 2018 Jan 27;9(14):11451-11464. doi: 10.18632/oncotarget.24328. eCollection 2018 Feb 20.

  PMID: 29545911 BACKGROUND

• Naeije L, Kariminia A, Abdossamadi S, Azadpour S, Subrt P, Kuzeljevic B, Irvine MA, Walker I, Schultz KR. Anti-Thymocyte Globulin Prophylaxis Induces a Decrease in Naive Th Cells to Inhibit the Onset of Chronic Graft-versus-Host Disease: Results from the Canadian Bone Marrow Transplant Group (CBMTG) 0801 Study. Biol Blood Marrow Transplant. 2020 Mar;26(3):438-444. doi: 10.1016/j.bbmt.2019.11.015. Epub 2019 Nov 19.

  PMID: 31756535 BACKGROUND

• Mueller TF. Phenotypic changes with immunosuppression in human recipients. Front Biosci. 2003 Sep 1;8:d1254-74. doi: 10.2741/1182.

  PMID: 12957847 BACKGROUND

• Oostenbrink LVE, Jol-van der Zijde CM, Kielsen K, Jansen-Hoogendijk AM, Ifversen M, Muller KG, Lankester AC, van Halteren AGS, Bredius RGM, Schilham MW, van Tol MJD. Differential Elimination of Anti-Thymocyte Globulin of Fresenius and Genzyme Impacts T-Cell Reconstitution After Hematopoietic Stem Cell Transplantation. Front Immunol. 2019 Mar 6;10:315. doi: 10.3389/fimmu.2019.00315. eCollection 2019.

  PMID: 30894854 BACKGROUND

• Cencioni MT, Genchi A, Brittain G, de Silva TI, Sharrack B, Snowden JA, Alexander T, Greco R, Muraro PA. Immune Reconstitution Following Autologous Hematopoietic Stem Cell Transplantation for Multiple Sclerosis: A Review on Behalf of the EBMT Autoimmune Diseases Working Party. Front Immunol. 2022 Feb 1;12:813957. doi: 10.3389/fimmu.2021.813957. eCollection 2021.

  PMID: 35178046 BACKGROUND

• Ismail A, Nitti R, Sharrack B, Badoglio M, Ambron P, Labopin M, Alexander T, Snowden JA, Greco R. ATG and other serotherapy in conditioning regimens for autologous HSCT in autoimmune diseases: a survey on behalf of the EBMT Autoimmune Diseases Working Party (ADWP). Bone Marrow Transplant. 2024 Nov;59(11):1614-1617. doi: 10.1038/s41409-024-02383-3. Epub 2024 Aug 14. No abstract available.

  PMID: 39143182 BACKGROUND

• Muraro PA, Mariottini A, Greco R, Burman J, Iacobaeus E, Inglese M, Snowden JA, Alexander T, Amato MP, Bo L, Boffa G, Ciccarelli O, Cohen JA, Derfuss T, Farge D, Freedman MS, Gaughan M, Heesen C, Kazmi M, Kirzigov K, Ljungman P, Mancardi G, Martin R, Mehra V, Moiola L, Saccardi R, Tintore M, Stankoff B, Sharrack B; Attendees of the ECTRIMS Focused Workshop on HSCT. Autologous haematopoietic stem cell transplantation for treatment of multiple sclerosis and neuromyelitis optica spectrum disorder - recommendations from ECTRIMS and the EBMT. Nat Rev Neurol. 2025 Mar;21(3):140-158. doi: 10.1038/s41582-024-01050-x. Epub 2025 Jan 15.

  PMID: 39814869 BACKGROUND

• Greco R, Ruggeri A, McLornan DP, Snowden JA, Alexander T, Angelucci E, Averbuch D, Bazarbachi A, Hazenberg MD, Kalwak K, Kenyon M, Mekelenkamp H, Neven B, Pedrazzoli P, Peric Z, Risitano AM, Sanchez-Ortega I, Ciceri F, Sureda A. Indications for haematopoietic cell transplantation and CAR-T for haematological diseases, solid tumours and immune disorders: 2025 EBMT practice recommendations. Bone Marrow Transplant. 2025 Nov;60(11):1499-1525. doi: 10.1038/s41409-025-02701-3. Epub 2025 Sep 9.

  PMID: 40926035 BACKGROUND

• Sharrack B, Saccardi R, Alexander T, Badoglio M, Burman J, Farge D, Greco R, Jessop H, Kazmi M, Kirgizov K, Labopin M, Mancardi G, Martin R, Moore J, Muraro PA, Rovira M, Sormani MP, Snowden JA; European Society for Blood and Marrow Transplantation (EBMT) Autoimmune Diseases Working Party (ADWP) and the Joint Accreditation Committee of the International Society for Cellular Therapy (ISCT) and EBMT (JACIE). Autologous haematopoietic stem cell transplantation and other cellular therapy in multiple sclerosis and immune-mediated neurological diseases: updated guidelines and recommendations from the EBMT Autoimmune Diseases Working Party (ADWP) and the Joint Accreditation Committee of EBMT and ISCT (JACIE). Bone Marrow Transplant. 2020 Feb;55(2):283-306. doi: 10.1038/s41409-019-0684-0. Epub 2019 Sep 26.

  PMID: 31558790 BACKGROUND

• Alexander T, Greco R. Hematopoietic stem cell transplantation and cellular therapies for autoimmune diseases: overview and future considerations from the Autoimmune Diseases Working Party (ADWP) of the European Society for Blood and Marrow Transplantation (EBMT). Bone Marrow Transplant. 2022 Jul;57(7):1055-1062. doi: 10.1038/s41409-022-01702-w. Epub 2022 May 16.

  PMID: 35578014 BACKGROUND

Biospecimen

Retention: SAMPLES WITHOUT DNA

PB samples for plasma, serum, and peripheral blood mononuclear cells (PBMCs)

MeSH Terms

Conditions

Multiple Sclerosis

Condition Hierarchy (Ancestors)

Demyelinating Autoimmune Diseases, CNS; Autoimmune Diseases of the Nervous System; Nervous System Diseases; Demyelinating Diseases; Autoimmune Diseases; Immune System Diseases

Central Study Contacts

Raffaella Greco

CONTACT

+39 02-2643-3903; greco.raffaella@hsr.it

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: June 4, 2026
• First Posted: June 9, 2026
• Study Start: May 4, 2026
• Primary Completion (Estimated): May 4, 2028
• Study Completion (Estimated): May 4, 2029
• Last Updated: June 9, 2026

Record last verified: 2026-06

Locations

IT (1)