An expanded access record providing Out-of-specification obecabtagene autoleucel in Lymphoblastic Leukemia, Acute, Adult and B Cell ALL, sponsored by Autolus Limited. Available at 32 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-02-27.
Sponsored by Autolus Limited · Expanded access
The purpose of this program is to provide access to obe-cel treatment for adult patients with ALL who have undergone leukapheresis and had obe-cel manufactured from their blood cells but the product is deemed OOS (does not meet the specifications to be used commercially). The target patients for this study have limited options for treatment and repeat blood sampling is not feasible. The main aims of this study are (1) to provide adult patients with ALL with access to obe-cel and (2) to describe the safety profile of obe-cel (including CRS, ICANS, serious infections, secondary cancers, and any side effects) within the first 45 days after infusion of OOS obe-cel.
This study is a single-arm, open-label, multicenter expanded access program (EAP). The patient population included in this EAP will be adult patients diagnosed with recurring or refractory ALL who were prescribed obe-cel as part of their standard of care and are eligible for use under the approved local prescribing information.
To be in the study, patients must provide informed consent, be at least 18 years of age, have a confirmed diagnosis of ALL, be medically fit and stable to receive obe-cel, have had commercial obe-cel prescribed by their treating physician as per standard of care, and for whom remanufacturing is not clinically appropriate.
Patients cannot be in the study if they have a history of severe immediate allergic reaction to any drugs or metabolites of similar chemical classes as obe-cel, are a pregnant woman, or are receiving treatment in another study.
All data will be collected from information routinely recorded in the medical record. There is no formal hypothesis testing. Data will be analyzed descriptively (numbers, percentages and ranges, etc.).
2,584 studies on the registry are indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma; 473 are open to participants now.
Browse Precursor Cell Lymphoblastic Leukemia-Lymphoma studies →Autolus Limited is the lead sponsor of 11 studies on the registry; 5 are open to participants now.
Counted across the registry records on this site, refreshed daily.
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.
Exclusion Criteria:
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.
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.
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Relapsed and refractory
Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Out-of-specification (OOS) obecabtagene autoleucel (obe-cel) given as a split-dose infusion based on tumor burden assessment at lymphodepletion according to the United States prescribing information.
Also known as: OOS Obe-cel
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Contact the providerGet an email when the registry record changes — status, dates, results — or when someone posts here.
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