Actively Recruiting

Phase 1
Age: 2Years +
All Genders
ID05679895

Safety and Efficacy of hCD1a-CAR T (OC-1) Therapy in Patients With Relapsed/Refractory T-cell Acute Lymphoblastic Leukemia/Lymphoma

Led by OneChain Immunotherapeutics · Updated on 2026-03-11

20

Participants Needed

2

Research Sites

N/A

Total Duration

On this page

Sponsors

O

OneChain Immunotherapeutics

Lead Sponsor

B

BioClever 2005 S.L.

Collaborating Sponsor

AI-Summary

What this Trial Is About

Researchers are evaluating the safety and efficacy of a new treatment called CD1a-CAR T therapy for patients with relapsed or refractory T-cell acute lymphoblastic leukemia or lymphoblastic T-cell lymphoma. This is a first-in-human, exploratory, open-label, single-arm, multicenter study focused on patients who have not responded well to standard treatments. The study is sponsored by OneChain Immunotherapeutics and is a Phase 1 trial aiming to understand how this therapy works and its safety profile. The treatment involves using a patient's own T-cells, which are collected from their blood, expanded, and genetically modified with a lentivirus to express a CD1a chimeric antigen receptor. These modified T-cells are then given back to the patient through intravenous infusion in escalating doses to find the safest and most effective dose. This dose-escalation approach helps researchers carefully monitor responses and side effects as the dose increases. Participants will be closely monitored for one year after receiving the infusion. Researchers will track adverse events, including severe immune reactions like cytokine release syndrome and neurotoxicity, as well as treatment-related deaths and specific side effects such as skin reactions. They will also assess how well the immune system remains balanced, measure remission rates, disease progression, survival, and the persistence of the infused cells. The study involves detailed follow-up visits and evaluations to gather this information over the year following treatment.

CONDITIONS

Brief Title

Safety and Efficacy of OC-1 Therapy in Patients With R/R T-ALL/LL

Who Can Participate

Age: 2Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Children aged 2 years or older, including adults, male and female
  • Patients with CD1a antigen blast expression of 20% or more confirmed by flow cytometry or histology
  • Relapsed or refractory CD1a-positive T-ALL/LL defined by failure to achieve remission after chemotherapy, relapse after frontline therapy or stem cell transplant, or primary refractoriness
  • Patients without reproductive capacity or willing to use highly effective contraception during the study
Not Eligible

You will not qualify if you...

  • Uncontrolled organ dysfunction including cardiac (LVEF <45%), lung, liver, kidney, or CNS problems
  • Stem cell transplant within less than 3 months or ongoing immunosuppressive treatment for graft versus host disease
  • Uncontrolled epilepsy or severe CNS disease
  • Active infections not controlled by treatment, including bacterial, fungal, or viral
  • Known HIV, active hepatitis B or C infections
  • Pregnant or breastfeeding women
  • Severe illness or medical conditions preventing protocol management
  • Serious autoimmune or immunodeficiency diseases
  • Participation in another experimental drug trial within 6 weeks before infusion
  • Other uncontrolled cancers

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

Treatment

Duration - Up to 1 year with focus on the first 28 days after infusion

Participants receive an infusion of CD1a-CAR T cells to treat relapsed or refractory T-cell acute lymphoblastic leukemia or lymphoma.

1 infusion visit followed by frequent monitoring visits especially during the first 28 days

Trial Site Locations

Total: 2 locations

1

Hospital Clínic

Barcelona, Spain

Actively Recruiting

2

Hospital Sant Joan de Déu

Barcelona, Spain

Actively Recruiting

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Research Team

W

Wilmar Castillo

L

Laura Astier

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NA

Model

SINGLE_GROUP

Primary Purpose

TREATMENT

Number of Arms

1

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