ClinicalTrials.gg
TerminatedNCT04735471GLEAN-1Updated Jun 18, 2025

A Phase 1 Study of ADI-001 in B Cell Malignancies

A Phase 1 interventional study of ADI-001 and Fludarabine in Lymphoma, Follicular, Lymphoma, Mantle-Cell and Marginal Zone Lymphoma, sponsored by Adicet Therapeutics. Terminated at 10 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-06-18.

Sponsored by Adicet Therapeutics · Phase 1, Interventional, and Treatment

Why this study was terminated
Terminated - Halted Prematurely

From the registry’s dates

  • Primary completion was Feb 2025, 1 year 9 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
34
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a Phase 1 dose escalation study following a 3+3 study design. The purpose of this study is to evaluate the safety and efficacy of ADI-001 in patients with B cell malignancies.

Read the detailed description

ADI-001 is an investigational immunotherapy composed of allogeneic gamma delta T cells that is being evaluated as a potential treatment for patients diagnosed with B cell malignancies who have relapsed or are refractory to at least two prior regimens. This first-in-human study will assess the safety and tolerability of ADI-001 and is designed to determine the maximum tolerated dose (MTD) or maximum assessed dose (MAD). Patients will be administered a single infusion or multiple infusions of ADI-001 cells. The study will include the following two parts:

Part 1 : dose escalation and extension. Parts 1a (escalation) and 1b (extension) will involve escalation and administration of single dose of ADI-001 and multiple doses of ADI-001.

Part 2 : dose expansion will involve dose administration of ADI-001 at MTD/MAD as determined in Part 1.

The study will also assess the pharmacokinetics and pharmacodynamics of ADI-001.

02

Conditions studied

  • Lymphoma, Follicular
  • Lymphoma, Mantle-Cell
  • Marginal Zone Lymphoma
  • Primary Mediastinal B-cell Lymphoma
  • Diffuse Large B Cell Lymphoma
  • Lymphoma, Non-Hodgkin

Keywords

  • B-cell lymphoma
  • CAR-T
  • Cell Therapy
  • Allogeneic Cell Therapy
  • T cells, gamma delta
  • Immunotherapy, Adoptive
  • Antigens, CD20
03

In context

Lymphoma, Follicular

1,891 studies on the registry are indexed under Lymphoma, Follicular; 290 are open to participants now.

This study's enrollment of 34 is below the median of 48 across 1,503 interventional studies indexed under Lymphoma, Follicular.

Browse Lymphoma, Follicular studies →

Lead sponsor

Adicet Therapeutics is the lead sponsor of 6 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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

  1. (R/R) previously treated B cell .
  2. Prior treatment must include at least 2 prior regimens, including anti CD20 antibody therapies. Prior Treatment with CD19 CAR T may be considered.
  3. Documented as defined by Lugano 2014
  4. Male or female ≥ 18 years of age
  5. (ECOG) Performance Status (PS) of 0 or 1
  6. Adequate hematological, renal, pulmonary, cardiac, and liver function
  7. Female patients who are not pregnant or breastfeeding
  8. Female patients of and all male patients must agree to use highly effective methods of for the duration of the study.

Exclusion criteria

Exclusion Criteria:

  1. Current or history of any of the following conditions:

    1. Central nervous system (CNS) primary lymphoma (current or history)
    2. Unrelated requiring systemic treatment (current or history [in the past 3 years, other than hormonal treatment which is allowed])
  2. Any of the following current conditions:

    1. Active acute or chronic (GvHD) other than grade 1 with skin involvement, or GvHD requiring treatment within 4 weeks of enrollment
    2. Any other acute or chronic medical or psychiatric condition that may increase the risk associated with study participation or product administration
    3. Tumor mass effects such as bowel obstruction or blood vessel compression that require therapy
    4. Opportunistic infections
  3. History of any conditions in the opinion of the Investigator
  4. Prior treatment with any of the following:

    a Gene therapy, genetically modified cell therapy, or adoptive T cell therapy within 6 weeks of study enrollment.

    b Radiation therapy within 4 weeks prior to study entry. Palliative local radiation may be allowed within 1 week prior to study entry.

    c stem cell transplant (SCT) within 6 weeks of planned ADI 001 infusion.

    d Allogeneic transplant and donor lymphocyte infusion within 3 months of planned CAR T cell infusion

  5. Patients unwilling to participate in an extended safety monitoring period (long term follow up [LTFU] protocol)
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.

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.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

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.

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.

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.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

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.

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.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
34 participants (actual)

Study arms

  • Experimental
    ADI-001 Dose Escalation

    ADI-001 is administered via infusion with ascending dose levels as a single dose to determine the maximum tolerated dose (MTD) or maximum assessed dose (MAD) of ADI-001 (Part 1a).

    Genetic: ADI-001 · Drug: Fludarabine · Drug: Cyclophosphamide

  • Experimental
    ADI-001 Dose Extension

    ADI-001 is administered via infusion at MAD/MTD to evaluate the safety of multiple doses (Part 1b).

    Genetic: ADI-001 · Drug: Fludarabine · Drug: Cyclophosphamide

  • Experimental
    ADI-001 Dose Expansion

    Dose Expansion ADI-001 is administered via infusion at the MTD/MAD to confirm recommended phase 2 dose (Part 2).

    Genetic: ADI-001 · Drug: Fludarabine · Drug: Cyclophosphamide

Interventions

06

What researchers measure

Primary outcomes

  1. The Incidence of Subjects with Dose Limiting Toxicities within each dose level cohort

    This primary endpoint will be used to determine the Maximum Tolerated Dose (MTD) or Maximum Assessed dose (MAD).

    Time frame: Day 28

  2. Proportion of treatment emergent and treatment related adverse events

    This primary endpoint will be used to determine the MTD/MAD of ADI-001

    Time frame: 1 year

Secondary outcomes

  1. Frequency and persistence of ADI-001

    Defined as duration from Day 1 to undetectable levels of ADI-001 cells per microliter blood

    Time frame: Day 1 through Month 12

  2. Overall Response Rate by Lugano Criteria

    Time frame: Day 28, Month 3, 6, 9, and 12

  3. Duration of Response

    Time frame: Day 28, Month 3, 6, 9, and 12

  4. Progression Free Survival

    Time frame: Day 28, Month 3, 6, 9, and 12

  5. Time To Progression

    Time frame: Day 28, Month 3, 6, 9, and 12

  6. Overall Survival

    Time frame: Day 28, Month 3, 6, 9, and 12

07

Study locations

10 sites
  • Stanford University Medical Center
    Stanford, California 94305, United States
  • University of Miami- Sylvester Comprehensive Cancer Center
    Miami, Florida 33136, United States
  • Northside Hospital Blood and Marrow Transplant Group of Georgia
    Atlanta, Georgia 30342, United States
  • The State University of Iowa
    Iowa City, Iowa 52242, United States
  • Norton Cancer Institute
    Louisville, Kentucky 40207, United States
  • Roswell Park Cancer Institute
    Buffalo, New York 14263, United States
  • Baylor Scott & White Research Institute
    Dallas, Texas 75204, United States
  • MD Anderson Cancer Center
    Houston, Texas 77030, United States
  • Swedish Cancer Center
    Seattle, Washington 98104, United States
  • Medical College of Wisconsin
    Milwaukee, Wisconsin 53226, United States
08

References and documents

Publications

  • Nishimoto KP, Barca T, Azameera A, Makkouk A, Romero JM, Bai L, Brodey MM, Kennedy-Wilde J, Shao H, Papaioannou S, Doan A, Masri C, Hoang NT, Tessman H, Ramanathan VD, Giner-Rubio A, Delfino F, Sharma K, Bray K, Hoopes M, Satpayev D, Sengupta R, Herrman M, Abbot SE, Aftab BT, An Z, Panuganti S, Hayes SM. Allogeneic CD20-targeted gammadelta T cells exhibit innate and adaptive antitumor activities in preclinical B-cell lymphoma models. Clin Transl Immunology. 2022 Feb 2;11(2):e1373. doi: 10.1002/cti2.1373. eCollection 2022. PubMed 35136603 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 18, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04735471
Lead sponsor
Adicet Therapeutics
Responsible party
Sponsor
First posted
Feb 3, 2021
Start date
Mar 4, 2021
Primary completion
Feb 3, 2025
Completion
Feb 3, 2025
Last update
Jun 18, 2025

Study contacts

Adicet Medical Director
study director · Adicet Bio

Oversight

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

Not currently enrolling

This study is terminated, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Studies of the drugs tested here: Fludarabine · Cyclophosphamide

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