ClinicalTrials.gg
RecruitingNCT07714512Updated Sep 21, 2026

Phase I/II Study of Anti-CD38 Monoclonal Antibody in Refractory Severe Aplastic Anemia

A Phase 1/2 interventional study of Isatuximab in Aplastic Anemia, sponsored by Institute of Hematology & Blood Diseases Hospital, China. Recruiting at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-21.

Sponsored by Institute of Hematology & Blood Diseases Hospital, China · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Jun 2026; still recruiting 4 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
32
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 29 studies in Anemia, Aplastic by Institute of Hematology & Blood Diseases Hospital, China — 14 open to participants now, 16 under way, none of them phase 3. Anemia, Aplastic · Institute of Hematology & Blood Diseases Hospital, China.

Planned enrollment
17th of 25
32 · median 40
Started
2026
with 2 others
Phase 1/2
3 of 29
3 open now
Primary completion
2028-06
later than 11 of 15 live
Registered
29th of 29
by date

Among the 29 studies in Anemia, Aplastic by Institute of Hematology & Blood Diseases Hospital, China, this one is the 17th largest by planned enrollment of the 25 interventional ones, is one of 3 that started in 2026, is one of 3 in phase 1/2, reaches primary completion later than 11 of the 15 other live ones, and was the 29th registered.

By phase

29 studies; the count open now beside each. This study's row is marked.

Phase 214 · 5 open
No phase6 · 2 open
Observational4 · 4 open
Phase 1/2this study3 · 3 open
Phase 12 · 0 open

By the year they started

First in 2012; this study’s year is marked. 3 started in 2026.

Size and results

Median enrollment 40 across the 25 interventional studies, 462 across the 4 observational. Of the 6 that completed or were terminated, 0 (0%) have results posted.

Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 29 studies in Anemia, Aplastic by Institute of Hematology & Blood Diseases Hospital, China, or all of them as a file.
02

Study summary

This is a phase I/II clinical study in adult patients with refractory severe aplastic anemia (SAA). Eligible patients must meet the criteria for refractory SAA and have a platelet count (PLT) \<30 × 10\^9/L and/or hemoglobin (HGB) \<90 g/L at enrollment. If the phase I results demonstrate an acceptable safety profile and allow determination of the maximum tolerated dose (MTD), the phase II part will be initiated directly to evaluate the efficacy of isatuximab.

03

Conditions studied

  • Aplastic Anemia

Browse trials for

Keywords

  • Isatuximab
  • Severe aplastic anemia
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosed with primary acquired aplastic anemia according to the 2024 British Society for Haematology guideline, Guidelines for the Diagnosis and Management of Adult Aplastic Anaemia, and the Chinese Guideline for the Diagnosis and Treatment of Aplastic Anemia (2022 edition) issued by the Hematology Branch of the Chinese Medical Association.
  • Previously diagnosed with severe aplastic anemia (SAA) or very severe aplastic anemia (VSAA), with no response or relapse after receiving anti-thymocyte/anti-lymphocyte globulin (ATG/ALG) in combination with standard-dose cyclosporine for at least 6 months, and standard-dose thrombopoietin receptor agonist (TPO-RA) therapy for at least 4 months.
  • \<90 g/L or count \<30×10\^9/L
  • Unsuitable for or unwilling to undergo hematopoietic stem cell transplantation, with no better available treatment options.
  • Age ≥18 years, regardless of gender.
  • (ECOG) performance status score ≤2
  • Willing and able to comply with the requirements for this study and written .

Exclusion criteria

Exclusion Criteria:

  • Diagnosed with congenital bone marrow failure syndromes
  • Bone marrow reticulin fibrosis grade ≥2
  • Subjects with a paroxysmal nocturnal hemoglobinuria (PNH) clone ≥50% or active hemolysis
  • Subjects with clonal cytogenetic abnormalities characteristic of myelodysplastic syndromes, except +8, del(20q), and -Y
  • Active bacterial, viral, or fungal infection within 2 weeks before the first dose of the drug, excluding common cold and onychomycosis, or any other serious infection. Any anti-infective treatment course for infection must have been completed at least 2 weeks before the first dose. Subjects with a history of infection or positive HIV antibody during screening; positive Treponema pallidum antibody during screening; active tuberculosis, defined as chest imaging or other relevant examinations within 3 months before the first dose of the investigational drug or during screening suggesting active tuberculosis infection; or active hepatitis during screening, defined as surface antigen (HBsAg) positivity, or hepatitis B core antibody (HBcAb) positivity with hepatitis B virus (HBV) DNA ≥30 IU/mL, or virus (HCV) antibody positivity with HCV RNA positivity
  • Active bleeding in the gastrointestinal tract, respiratory tract, central nervous system, or other sites
  • A history of any disease that, in the investigator's opinion, would pose a safety risk to the subject if participating in the study, or would affect the evaluation of efficacy or safety if the disease/condition worsens during the study, including but not limited to: a. cardiovascular diseases, such as a history of acute myocardial infarction or unstable angina within the past year, severe arrhythmia such as frequent multifocal premature ventricular contractions, ventricular tachycardia, or ventricular fibrillation, congestive heart failure, arterial or venous thrombosis, or (NYHA) class III-IV cardiac function; b. a history of psychiatric disorders, severe cerebrovascular disease, or cognitive sequelae
  • Use of agents targeting B cells or plasma cells within 3 months before the first dose of the investigational drug or anticipated use during the clinical trial
  • Treatment with anti-lymphocyte globulin or anti-thymocyte globulin within 6 months before the first dose of the investigational drug
  • Treatment with tacrolimus, sirolimus, cyclophosphamide, anti-CD52 monoclonal antibody, or similar therapies within 4 weeks or 5 half-lives, whichever is shorter, before the first dose of the investigational drug
  • Planned participation in another clinical trial, or prior exposure to another investigational product before the first dose, with an interval of less than 4 weeks or 5 half-lives of the drug, whichever is shorter
  • Receipt of a within 4 weeks before the first dose of the investigational drug or planned receipt during the study, or receipt of a COVID-19 vaccine within 7 days before dosing
  • Prior treatment targeting CD38
  • Women who are pregnant or breastfeeding, or who plan to become pregnant or breastfeed during the study
  • Patients considered to be ineligible for the study by the investigator for reasons other than the above
Terms in these criteria, in plain language(11)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
32 participants (estimated)

Study arms

  • Experimental
    Isatuximab

    The phase I part is the dose-escalation stage dose escalation will follow a standard 3+3 design. The phase II part is a single-arm study using Simon's two-stage design.

    Drug: Isatuximab

Interventions

  • Phase I: Eligible subjects will receive isatuximab at 5 mg/kg per dose or 10 mg/kg per dose. The treatment period will last 6 weeks. Isatuximab will be administered by intravenous infusion once weekly (QW) for six consecutive doses. Phase II: Eligible subjects will receive isatuximab by intravenous infusion once weekly for six consecutive doses. The specific dose will be the recommended phase II dose from the phase I part.

06

What researchers measure

Primary outcomes

  1. Incidence of adverse events

    Use Common Terminology Criteria for Adverse Events (CTCAE) Version 6 to assess the adverse event

    Time frame: Within 12 weeks post treatment

  2. Overall response rate

    Percentage of patients with hematological response, including complete response (CR) or partial response (PR). Hematological response is evaluated by hemoglobin (Hb), platelet count (PLT) and absolute neutrophil count (ANC).

    Time frame: Within 12 weeks post treatment

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07714512
Collaborators
Sanofi
Responsible party
Jun Shi (Director of the Red Blood Cell Diseases Center & Director of the Regenerative Medicine Clinic, Institute of Hematology & Blood Diseases Hospital, China) — Principal investigator
First posted
Jul 20, 2026
Start date
Jun 30, 2026
Primary completion
Jun 30, 2028 (estimated)
Completion
Dec 31, 2028 (estimated)
Last update
Sep 21, 2026

Study contacts

Lele Zhang, PhD
Contact
zhanglele@ihcams.ac.cn
‭15811139278‬
Jun Shi, PhD
principal investigator · Institute of Hematology & Blood Diseases Hosptial, Chinese Academy of Medical Science and Peking Union Medical School

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Isatuximab

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