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Aplastic AnemiaPhase 2APARRNCT06646497

Indication of HSCT in Patients With Refractory/Relapse AA After First-line Standard Immunosuppressive Therapy Aged More Than 40 Years

A Phase 2 study testing Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone Marrow in people with Aplastic Anemia, run by Assistance Publique - Hôpitaux de Paris at 26 sites in France.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

Outcomes for adult patients with Severe Aplastic Anemia (SAA) aged more than 40 years who are refractory or in relapse after first-line IST remain poor. Hematopoietic stem cell transplantation (HSCT) is the unic valid therapeutic option but results have always been disappointing in patients aged 40 years or older. Read more about this study

Who is it for?
Ages 40 to 60 years
Conditions the study is for
Aplastic Anemia
What is being tested?
Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone Marrow
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
52 participants
Where
26 sitesFrance
Study dates
24 Jan 2025to 24 Jan 2030
Phase
Phase 2
Are there results?
Not yet: the study is under way

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 40 to 60 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Aged from 40 to 60 years old
  • Suffering from acquired refractory severe idiopathic aplastic anemia after at least 6 months treatment with anti-thymocyte globulin, cyclosporine with Eltrombopag or in relapse
  • Allograft validated in the National Multidisciplinary expertise meetings of the French reference centre for aplastic anemia
  • With an available geno-identical donor or 10/10 matched donor or haploidentical donor
  • With the absence of donor specific antibody detected in the patient with a MFI < 1500 (antibodies to the distinct haplotype between donor and recipient)
  • Usual criteria for HSCT:
Show all 20Show fewer
  • ECOG ≤ 2
  • No severe and uncontrolled infection
  • Cardiac function compatible with high dose of cyclophosphamide
  • With an adequate organ function ASAT and ALAT ≤ 3N, conjugated bilirubin ≤ 2N (or total bilirubin ≤ 2N if not available), clearance creatinine ≥ 50ml / min
  • With health insurance coverage
  • Women of childbearing potential and men must use contraceptive methods during their participation to the research and for 12 months and 6 months after the last dose of cyclophosphamide, respectively.
  • Having signed a written informed consent
  • NB: The authorized contraceptive methods are: For women of childbearing age and in absence of permanent sterilization:
  • oral, intravaginal or transdermal combined hormonal contraception,
  • oral, injectable or transdermal progestogen-only hormonal contraception,
  • intrauterine hormonal-releasing system (IUS),
  • sexual abstinence (need to be evaluated in relation to the duration of clinical trial and the preferred and usual lifestyle of the participants).
  • For men in absence of permanent sterilization: sexual abstinence, condoms.
  • Individuals must meet all of the inclusion criteria as verified at the screening / inclusion visit to be eligible to participate at the study.

Who cannot join

  • Patients:
  • With morphologic evidence of clonal evolution (patients with isolated bone marrow cytogenetic abnormalities are also eligible excepted chromosome 7 abnormalities and complex karyotype).
  • With seropositivity for HIV or HTLV-1-2 or active hepatitis B or C and associated hepatic cytolysis
  • Cancer in the last 5 years (except basal cell carcinoma of the skin or "in situ" carcinoma of the cervix)
  • Pregnant (βHCG positive) or breast-feeding
  • Yellow fever vaccine and all others live virus vaccines within 2 months before transplantation and during the research
Show all 15Show fewer
  • With uncontrolled coronary insufficiency, recent myocardial infarction < 6-month, current manifestations of heart failure according to NYHA (II or more), ventricular ejection fraction <50%
  • With renal failure with creatinine clearance <50ml /min
  • Any contraindication mentioned in the SmPC and the Investigator's brochure of all medicinal products planned to be used in the trial including conditioning regimen, GVHD prophylaxis, prevention of EBV reactivation, infection prophylaxis
  • Known allergy or intolerance to all medicinal products and/or excipients planned to be used in the trial including conditioning regimen, GVHD prophylaxis, prevention of EBV reactivation, infection prophylaxis, according to Investigator's brochure and SmPC.
  • Who have any debilitating medical or psychiatric illness, which precludes understanding the inform consent as well as optimal treatment and follow-up
  • Under legal protection (tutorship or curatorship)
  • Under state medical aid
  • Participation to another interventional trial on a medicinal product or cell therapy
  • Individuals meeting any of the exclusion criteria as verified at the screening / inclusion visit will be ineligible to participate at the study.

Trial locations and contacts

26 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Régis Peffault de Latour, MD PhD contact

142385073 ext. +33

regis.peffaultdelatour@aphp.fr

Jérôme Lambert, MD PhD contact

142499742 ext. +33

jerome.lambert@u-paris.fr

26 sites in 1 country

France26 sites, 26 recruiting
  • CHU Amiens

    Amiens

    Magalie Joris, +33 3 22 45 54 23 ext. +33, joris.magalie@chu-amiens.fr

    Recruiting
  • CHU Angers

    Angers

    Sylvie François, +33 2 41 35 44 82 ext. +33, syfrancois@chu-angers.fr

    Recruiting
  • CHU Besançon

    Besançon

    Etienne Daguindau, +33370632285 ext. +33, edaguindau@chu-besancon.fr

    Recruiting
  • CHU Bordeaux

    Bordeaux

    Edouard Forcade, +33 5 57 65 65 11 ext. +33, edouard.forcade@chu-bordeaux.fr

    Recruiting
  • CHU Caen

    Caen

    Sylvain Chantepie, +33231272073, Chantepie-s@chu-caen.fr

    Not yet recruiting
  • HNIA Percy

    Clamart

    Johanna Konopacki, +33 1 41 46 63 03 ext. +33, johanna.konopacki@intradef.gouv.fr

    Recruiting
  • Hôpital d'Estaing

    Clermont-Ferrand

    Aurélie Ravinet, +33 4 73 75 00 65 ext. +33, aravinet@chu-clermontferrant.fr

    Recruiting
  • Hôpital Henri Mondor AP-HP

    Créteil

    Sébastien Maury, +33 1 49 81 45 26 ext. +33, sebastien.maury@aphp.fr

    Not yet recruiting
  • CHU Grenoble Alpes

    Grenoble

    Claude-Eric Bulabois, +33 4 76 76 92 09 ext. +33, cebulabois@chu-grenoble.fr

    Recruiting
  • CHU Lille

    Lille

    Micha Srour, Micha.SROUR@chu-lille.fr

    Micha Srour, +33 3 20 44 42 85 ext. +33, Micha.SROUR@chu-lille.fr

    Not yet recruiting
  • CHU Limoges

    Limoges

    Pedro de Lima Prata, +33 5 55 05 88 67 ext. +33, Pedro.PRATA@chu-limoges.fr

    Recruiting
  • CHU Lyon Sud

    Lyon

    Vincent Alcazer, +33 4 78 86 22 59 ext. +33, vincent.alcazer@chu-lyon.fr

    Recruiting
  • Institut Paoli Calmettes

    Marseille

    Raynier Devillier, +33 4 91 22 33 33, DEVILLIERR@ipc.unicancer.fr

    Not yet recruiting
  • CHU Montpellier

    Montpellier

    Patrice Ceballos, +33 4 67 33 32 68 ext. +33, p-ceballos@chu-montpellier.fr

    Recruiting
  • CHRU Nancy

    Nancy

    Simona Pagliuca, +33383155259 ext. +33, s.pagliuca@chru-nancy.fr

    Recruiting
  • CHU Nantes

    Nantes

    Alice Garnier, +33 2 40 08 42 28 ext. +33, alice.garnier@chu-nantes.fr

    Recruiting
  • CHU Nice

    Nice

    Michael Loschi, +33 4 92 03 52 11 ext. +33, loschi.m@chu-nice.fr

    Recruiting
  • Saint Louis hospital

    Paris, France, 75010

    Régis Peffault de La Tour, MD PhD, +33142385073

    Recruiting
  • Hopital Necker - APHP

    Paris

    Felipe Suarez, +331 44 49 51 88 ext. +33, felipe.suarez@aphp.fr

    Recruiting
  • Hôpital La Pitié Salpêtrière AP-HP

    Paris

    Stéphanie Nguyen-Quoc, +33 1 42 17 61 84 ext. +33, stephanie.nguyen-quoc@aphp.fr

    Not yet recruiting
  • CHU Poitiers

    Poitiers

    Natacha Maillard, +33 5 16 60 43 29, natacha.maillard@chu-poiters.fr

    Recruiting
  • CHU Rennes

    Rennes

    Jean-Baptiste Mear, +33299284321 ext. +33, jean-baptiste.mear@chu-rennes.fr

    Not yet recruiting
  • Henri Becquerel

    Rouen

    Anne-Lise Menard, +33 2.32.08.24.98 ext. +33, anne-lise.menard@chb-unicancer.fr

    Not yet recruiting
  • CHU Saint Etienne

    Saint-Etienne

    Jérôme Cornillon, +334 77 82 24 55 ext. +33, Jerome.Cornillon@chu-st-etienne.fr

    Recruiting
  • CHU Strasbourg

    Strasbourg

    Bruno Lioure, +33 3 68 76 74 03 ext. +33, bruno.lioure@chru-strasbourg.fr

    Recruiting
  • CHU Toulouse

    Toulouse

    Anne Huynh, +33 5 31 15 63 31 ext. +33, huynh.anne@iuct-oncopole.fr

    Recruiting

Other trials in France

About this study

Official title: Evaluation of an Optimized Allogeneic Hematopoietic Stem Cell Transplantation Protocol With Post-transplant Cyclophosphamide in Patients Aged 40 to 60 Years Old With Acquired Aplastic Anemia Refractory or in Relapse After Immunosuppression

Outcomes for adult patients with Severe Aplastic Anemia (SAA) aged more than 40 years who are refractory or in relapse after first-line IST remain poor. Hematopoietic stem cell transplantation (HSCT) is the unic valid therapeutic option but results have always been disappointing in patients aged 40 years or older. The first cause of death after HSCT in those refractory/relapse SAA patients is still graft versus host disease (GvHD). Recently, new strategies to prevent GvHD, including T-cell replete grafts with administration of post-transplantation cyclophosphamide (PTCy), have revolutionized the field, notably in haplo-identical donor setting. Using marrow as source of stem cells and a PTCy strategy not only in haplo-identical donor setting but also in case of an available matched sibling or unrelated donor might prevent drastically GvHD and eventually be practice changing. Evaluating this new strategy is the main objectives of "APARR".

Conditions
Aplastic Anemia
Being tested
Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone Marrow
Keywords
Refractory/relapse idiopathic anemia, Idiopathic aplastic anemia, Hematopoietic stem cell transplantation, Post-transplantation cyclophosphamide
Medical subject headings
Anemia, Aplastic

What participants receive

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

  • Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone MarrowBiological

    1. Conditioning regimen Thymoglobulin (0.5/mg/kg à D-9, 2 mg /kg at D-8 and 2.5 mg/kg à D-7), Fludarabine (30mg/m2/day i.v: day -6 to day -2), pre-transplant, Cyclophosphamide (14.5 mg/kg/day i.v: day -6 and day -5), and Total Body Irradiation (2 Gray on day -1).
    2. Stem cell source Bone Marrow only. Target of 4 × 10^8 nucleated cells/kg recipient body weight. Granulocyte colony stimulating factor is given subcutaneously starting on day +5 at 5 mg/ kg/day until the absolute neutrophil count is greater than 1.5 × 10^9/L for 3 days.
    3. GVHD prophylaxis Cyclophosphamide 50 mg/Kg/day at D+3 and D+4. Tacrolimus (0,2 à 0,3 mg/kg/day per os divided into 2 doses or 0.05 to 0.1 mg/kg/d IVSE) and mycophenolate (MMF) will begin from D+5. In absence of GvHD, MMF will be stopped between D35 and D45 and Tacrolimus at day 365.
    4. Prevention of EBV reactivation Rituximab 150mg/m2 intravenously at Day+5 post HSCT (except patients and their donor with EBV serology and EBV PCR negative).
Study groups in NCT06646497
Study groupRoleWhat they receive
Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone MarrowExperimentalNot described
Receives: Biological: Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone Marrow

What is being measured

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

  1. GRFS (Graft Versus Host Disease (GvHD) and Relapse/rejection-Free Survival)

    GRFS is a composite right-censored endpoint, defined as the time from HSCT to the first of the following events:

    • primary graft failure, defined as the absence of engraftment from aplasia at day 60 after graft (D0) (i.e., persistence of neutrophils< 500 AND platelets < 20 Giga/L)
    • secondary graft failure, defined as the reoccurrence of aplasia after engraftment (defined as both occurrence of neutrophils< 500 for 3 days and platelets < 20 Giga/L for 7 consecutive days)
    • grade 3-4 acute GVHD, according to the MAGIC CONSORTIUM 2016
    • severe chronic GVHD, according to the NIH classification
    • death, whatever the cause

    Measured: 2 years after transplantation

Secondary outcomes (45)
  1. Neutrophil engraftment

    Neutrophils engraftment will be defined as first day of 3 consecutive days with neutrophils >0.5 G/L.

    With donor chimerism> 85% on the total blood.

    Measured: At day 100

  2. Platelets engraftment

    Platelets engraftment will be defined as first day of 7 consecutive days with platelets >20 G/L.

    With donor chimerism> 85% on the total blood.

    Measured: At day 100

  3. Absolute number of neutrophils

    Measured: At 1 month

  4. Absolute number of neutrophils

    Measured: At 3 months

  5. Absolute number of neutrophils

    Measured: At 6 months

  6. Absolute number of neutrophils

    Measured: At 12 months

  7. Absolute number of neutrophils

    Measured: At 24 months

  8. Absolute number of neutrophils

    Measured: At day of last platelet and red blood cell transfusions (up to 24 months)

  9. Absolute number of platelets

    Measured: At 1 month

  10. Absolute number of platelets

    Measured: At 3 months

  11. Absolute number of platelets

    Measured: At 6 months

  12. Absolute number of platelets

    Measured: At 12 months

  13. Absolute number of platelets

    Measured: At 24 months

  14. Absolute number of platelets

    Measured: At day of last platelet and red blood cell transfusions (up to 24 months)

  15. Acute GvHD incidence grade 2-4

    Measured: At 3 months

  16. Chronic GvHD incidence

    Measured: At 24 months

  17. Severe chronic GvHD

    Measured: At 24 months

  18. Secondary graft failure

    Measured: At 12 months

  19. Secondary graft failure

    Measured: At 24 months

  20. Severe infections

    CTCAE grade 3-4

    Measured: At 1 month

  21. Severe infections

    CTCAE grade 3-4

    Measured: At 3 months

  22. Severe infections

    CTCAE grade 3-4

    Measured: At 6 months

  23. Severe infections

    CTCAE grade 3-4

    Measured: At 12 months

  24. Severe infections

    CTCAE grade 3-4

    Measured: At 24 months

  25. Incidence of cardiac toxicities

    Measured: At 12 months

  26. Incidence of Epstein Barr Virus (EBV) infection

    Measured: At 12 months

  27. Incidence of CytoMegaloVirus (CMV) infection

    Measured: At 12 months

  28. Mortality

    Measured: At 12 months

  29. Mortality

    Measured: At 24 months

  30. Overall survival

    Measured: At 12 months

  31. Overall survival

    Measured: At 24 months

  32. Quality Of Life questionnaire

    Quality of life will be evaluated using PedsQL questionnaire. Scores varies from 0 to100, with higher scores associated with better health-related quality of life

    Measured: Before transplantation - at baseline day 0

  33. Quality Of Life questionnaire

    Quality of life will be evaluated using PedsQL questionnaire. Scores varies from 0 to100, with higher scores associated with better health-related quality of life

    Measured: At 6 months

  34. Quality Of Life questionnaire

    Quality of life will be evaluated using PedsQL questionnaire. Scores varies from 0 to100, with higher scores associated with better health-related quality of life

    Measured: At 12 months

  35. Quality Of Life questionnaire

    Quality of life will be evaluated using PedsQL questionnaire. Scores varies from 0 to100, with higher scores associated with better health-related quality of life

    Measured: At 24 months

  36. Chimerism

    Proportion of patients with a donor chimerism of 85% or more

    Measured: At 1 month

  37. Chimerism

    Proportion of patients with a donor chimerism of 85% or more

    Measured: At 3 months

  38. Chimerism

    Proportion of patients with a donor chimerism of 85% or more

    Measured: At 6 months

  39. Chimerism

    Proportion of patients with a donor chimerism of 85% or more

    Measured: At 12 months

  40. Chimerism

    Proportion of patients with a donor chimerism of 85% or more

    Measured: At 24 months

  41. Immune reconstitution

    Immune reconstitution will be done by analyzing T, B, NK, regulatory T cell levels in the peripheral blood. All have the same unit measure namely absolute numbers/microL.

    Measured: At 1 month

  42. Immune reconstitution

    Immune reconstitution will be done by analyzing T, B, NK, regulatory T cell levels in the peripheral blood. All have the same unit measure namely absolute numbers/microL.

    Measured: At 3 months

  43. Immune reconstitution

    Immune reconstitution will be done by analyzing T, B, NK, regulatory T cell levels in the peripheral blood. All have the same unit measure namely absolute numbers/microL.

    Measured: At 6 months

  44. Immune reconstitution

    Immune reconstitution will be done by analyzing T, B, NK, regulatory T cell levels in the peripheral blood. All have the same unit measure namely absolute numbers/microL.

    Measured: At 12 months

  45. Immune reconstitution

    Immune reconstitution will be done by analyzing T, B, NK, regulatory T cell levels in the peripheral blood. All have the same unit measure namely absolute numbers/microL.

    Measured: At 24 months

Timeline

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

  1. First posted17 Oct 2024
  2. Study start24 Jan 2025
  3. Primary completion24 Jan 2030 (estimated)
  4. Study completion24 Jan 2030 (estimated)

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 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
A phase II multicenter, national, prospective, single-arm trial
Masking
None (open label)
Enrolment
52 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06646497
Sponsor's protocol ID
APHP230832
Acronym
APARR
Status last verified
Apr 2026
First submitted
13 Sep 2024
Last updated
28 Apr 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Allogeneic hematopoietic stem cell transplantation Stem cell source only Bone Marrow in people with Aplastic Anemia, run by Assistance Publique - Hôpitaux de Paris at 26 sites in France.

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 20 inclusion and 15 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: looking for participants now, as of the sponsor's last update on 28 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 26 sites in France. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

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

Contact Régis Peffault de Latour, MD PhD (142385073 ext. +33, regis.peffaultdelatour@aphp.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

GRFS (Graft Versus Host Disease (GvHD) and Relapse/rejection-Free Survival) (time frame: 2 years after transplantation). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 28 Apr 2026; AzTrials last refreshed its copy on 7 Nov 2026.

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