Assessment of Senl_B19 CAR-T Cells in Relapsed/Refractory CD19+ B-ALL

A Phase II, Open-Label, Multicenter Clinical Study to Evaluate the Efficacy and Safety of Senl_B19 Autologous Anti-CD19 CAR-T Cells in Subjects With Relapsed or Refractory CD19-Positive B-Cell Acute Lymphoblastic Leukemia

Assessment of Senl_B19 CAR-T Cells in Relapsed/Refractory CD19+ B-ALL (NCT07244406) is a Phase 2 interventional studying B-ALL, sponsored by Hebei Senlang Biotechnology Inc., Ltd.. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

To evaluate the efficacy and safety of S1904 in patients with relapsed or refractory CD19+B-ALL.

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against B-ALL and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 59 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused B-ALL subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

Who May Qualify: - 1.Sign the willing to sign a consent form and be willing and able to comply with the visit, treatment regimen, laboratory examination and other requirements of the study as stipulated in the trial flow chart; 2.Male or female subjects. Age between 3 and 25 years (inclusive) at the time of ICF signing； 3.Confirmed diagnosis of relapsed/refractory B-ALL at ICF signing; 4.\>5% blasts on screening bone marrow biopsy/aspirate; 5.CD19+ malignant cells by flow cytometry (bone marrow or peripheral blood) at screening; 6.Patients with Ph+ ALL are eligible if they meet the relapsed/refractory criteria and have either: failed ≥2 TKI regimens (unless they have a T315I mutation), demonstrated TKI intolerance, or have a contraindication to TKIs; 7.Estimated survival time\>3 months. Who Should NOT Join This Trial: - 1.Relapse of isolated extramedullary disease; 2.Burkitt lymphoma/leukemia； 3.Active acute or moderate-to-severe chronic GVHD within 4 weeks prior to ICF signing. Or, any systemic GVHD treatment within 4 weeks prior to infusion; 4.No uncontrolled active infection at the time of ICF signing or apheresis.; 5.Prior receipt of any CAR-T therapy or other cellular/gene therapy before screening; 6.Received investigational drugs or systemic anti-tumor therapy within 4 weeks or 5 half-lives (whichever longer) prior to apheresis; 7.Active interstitial lung disease/pneumonitis at the time of ICF signing; 8.Subjects whom the Investigator considers unable to comply with the study protocol or who are otherwise not an appropriate candidate for the study for any reason; Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: * 1.Sign the informed consent and be willing and able to comply with the visit, treatment regimen, laboratory examination and other requirements of the study as stipulated in the trial flow chart; 2.Male or female subjects. Age between 3 and 25 years (inclusive) at the time of ICF signing； 3.Confirmed diagnosis of relapsed/refractory B-ALL at ICF signing; 4.\>5% blasts on screening bone marrow biopsy/aspirate; 5.CD19+ malignant cells by flow cytometry (bone marrow or peripheral blood) at screening; 6.Patients with Ph+ ALL are eligible if they meet the relapsed/refractory criteria and have either: failed ≥2 TKI regimens (unless they have a T315I mutation), demonstrated TKI intolerance, or have a contraindication to TKIs; 7.Estimated survival time\>3 months. Exclusion Criteria: * 1.Relapse of isolated extramedullary disease; 2.Burkitt lymphoma/leukemia； 3.Active acute or moderate-to-severe chronic GVHD within 4 weeks prior to ICF signing. Or, any systemic GVHD treatment within 4 weeks prior to infusion; 4.No uncontrolled active infection at the time of ICF signing or apheresis.; 5.Prior receipt of any CAR-T therapy or other cellular/gene therapy before screening; 6.Received investigational drugs or systemic anti-tumor therapy within 4 weeks or 5 half-lives (whichever longer) prior to apheresis; 7.Active interstitial lung disease/pneumonitis at the time of ICF signing; 8.Subjects whom the Investigator considers unable to comply with the study protocol or who are otherwise not an appropriate candidate for the study for any reason;

Treatments Being Tested

BIOLOGICAL

S1904 CD19 CAR-T

Autologous CD19-targeting CAR T cells

Locations (1)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Peking University People's Hospital

Beijing, China

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT07244406), the sponsor (Hebei Senlang Biotechnology Inc., Ltd.), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT07244406 clinical trial studying?

To evaluate the efficacy and safety of S1904 in patients with relapsed or refractory CD19+B-ALL. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT07244406?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT07244406?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT07244406. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT07244406. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.