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AMLPhase 1NCT05473910

A Study of T-Cell Receptor Engineered Donor T Cells in Subjects Undergoing Allogeneic Peripheral Blood Stem Cell Transplantation (ALLOHA)

A Phase 1 study testing SOC + TSC-101 and SOC + TSC-100 in people with AML and MDS, run by TScan Therapeutics, Inc. at 21 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This is a multi-center, non-randomized, concurrent controlled, multi-arm, Phase 1 interventional, open-label, biologic assignment-based umbrella study evaluating the feasibility, safety and preliminary efficacy of an escalating dose regimen of up to 2 doses of TSC-100 and TSC-101 in patients with AML, MDS, or ALL… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
AML, MDS
What is being tested?
SOC + TSC-101 and SOC + TSC-100
Could I receive a placebo?
No, everyone receives an active treatment
How many people
310 participants
Where
21 sitesUnited States
Study dates
1 Nov 2022to Jun 2028
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female aged ≥ 18 years at the time of signing the informed consent.
  • Eastern Cooperative Oncology Group (ECOG)-PS ≤ 2 at the time of the screening visit.
  • Contraceptive use by male and female participants must be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
  • Male Participants:
  • A male participant must agree to use a highly effective contraceptive as detailed in Appendix 4 of this protocol during the intervention period and for at least 12 months after the last dose of study intervention and refrain from donating sperm during this period.
  • Female Participants:
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  • A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies:
  • Not a woman of childbearing potential (WOCBP) OR
  • A WOCBP who agrees to follow the contraceptive guidance during the intervention period and for at least 12 months after the last dose of study intervention.
  • Preparing to undergo allogeneic HCT for either of the following:
  • AML, MDS, ALL
  • Participants in the treatment arms must express HLA-A*0201. Participants in the control arm may express any HLA type.
  • Having the HA1+/- or HA-1+/+ (HA-1 positive) genotype to be eligible for TSC-100 treatment.
  • Having the HA2+/- HA-2+/+ (HA-2 positive) genotype to be eligible for TSC-101 treatment.
  • Having a haploidentical donor, MMUD, or MUD for HCT who is adequately HLA-matched by institutional standards and meets the donor inclusion criteria.
  • Considered to be clinically indicated for haploidentical donor, MMUD, or MUD transplantation at the discretion of the treating investigator.
  • Considered to be clinically indicated for RIC at the discretion of the treating investigator.
  • Considered to be clinically indicated for peripheral blood stem cell transplantation at the discretion of the treating investigator.
  • Organ function parameters for transplant eligibility are met per institutional standards.
  • Capable of giving signed informed consent - which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.
  • Participants must provide consent for mandatory study procedures including bone marrow biopsy and blood sampling for research analyses in the ICF.
  • Participants must agree to participate in long-term follow-up for up to 15 years post initial product treatment if they are enrolled in the study and receive the investigational Tcell infusion.
  • Donor Inclusion Criteria :
  • Male or female aged ≥ 18 years at the time of signing the informed consent. Able to undergo peripheral blood stem cell (PBSC) collection and up to 2 rounds of leukapheresis (for TSC-100 or TSC101 manufacturing for treatment arms only, and f for stem cell collection for both treatment arms and the control arm).
  • Donors matched to TSC-100 participants should be HA-1-/- (negative) and/or negative for all HLA-A02 alleles Donors matched to TSC-101 participants should be negative for all HLA-A02 alleles Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.

Who cannot join

  • Medical or psychological conditions that would make the participant an unsuitable candidate for cell therapy including another concurrent uncontrolled malignancy or active CNS disease.
  • The presence of organ toxicities will not necessarily exclude participants from enrolling on the protocol at the discretion of the PI; however, a delay in the infusion of HA1/HA2 TCRT cells may be required at the discretion of the treating investigator Participants with levels of donor-specific HLA antibodies that are considered by the treating investigator to be high enough to warrant desensitization protocols and who have no alternate donors.
  • Participants who meet inclusion criteria for TSC-101 but who are also positive for HLAA02:07.
  • Participants with evidence of clinically significant infection or uncontrolled viral r reactivation of cytomegalovirus (CMV), Epstein-Barr virus (EBV), Adenovirus, BK virus (BKV), or human herpesvirus 6 (HHV-6).
  • Participants with active cardiac disease, defined as:
  • Uncontrolled or symptomatic angina within the past 3 months. History of clinically significant arrhythmias (such as ventricular tachycardia, ventricular fibrillation, torsades de pointes). Atrial fibrillation with controlled ventricular response on treatment is not an exclusion.
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  • Myocardial infarction < 3 months from study entry. Uncontrolled or symptomatic congestive heart failure. Prior allogeneic HCT. Participants who have a history of hypersensitivity to murine proteins. Enrollment on a concomitant trial with a novel investigational agent. Use of anti-thymocyte globulin, alemtuzumab, or other in vivo T-cell depleting agents from Day -14 through end of study.
  • Donor Exclusion Criteria :
  • Donors for TSC-100 positive for any HLA-A02 allele would be excluded unless they are HA-1 negative. If donors with any HLA-A02 allele are considered for patients eligible for TSC-100, the donor would undergo HA-1 testing to ensure that the donor is HA-1 negative (40% probability).
  • Donors for TSC-101 positive for any HLA-A02 allele are excluded regardless of HA- 2 status.
  • Donors who test positive for any of the following: HIV-1, HIV-2, human T-lymphotropic virus (HTLV)-1, HTLV-2 seropositive or with active hepatitis B or hepatitis C virus infection, syphilis, West Nile virus through central lab testing. Donors who screen positive for risk of CreutzfeldtJakob disease or Zika virus infection using donor history questionnaires will also be excluded. Donors with evidence of past CMV or EBV infections will be allowed.
  • Related donor residing outside of the United States of America (USA). If the donor screening, testing and leukapheresis can be performed at the same site where the participant is being treated, the donor is considered eligible.

Trial locations and contacts

21 sites in 1 country.

21 sites in 1 country

United States21 sites
  • Northside Hospital

    Atlanta, Georgia, 30342

  • University of Colorado - Anschutz Cancer Center

    Aurora, Colorado, 80045

  • St. David's South Austin Medical Center

    Austin, Texas, 76704

  • Johns Hopkins University

    Baltimore, Maryland, 21287

  • Mass General Hospital

    Boston, Massachusetts, 02114

  • Dana-Farber Cancer Institute - Hematology/Oncology

    Boston, Massachusetts, 02215

  • University North Carolina

    Chapel Hill, North Carolina, 27599

  • Baylor University Medical Center

    Dallas, Texas, 75246

  • SCRI - Colorado Blood Cancer Institute

    Denver, Colorado, 80218

  • Karmanos Cancer Institute

    Detroit, Michigan, 48201

  • City of Hope

    Duarte, California, 91010

  • Hackensack University Medical Center

    Hackensack, New Jersey, 07601

  • Memorial Cancer Institute

    Hollywood, Florida, 33021

  • MD Anderson

    Houston, Texas, 77030

  • Froedert and Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226

  • SCRI - TriStar Bone Marrow Transplant

    Nashville, Tennessee, 37203

  • Yale

    New Haven, Connecticut, 06510

  • Columbia University

    New York, New York, 10027

  • Mount Sinai

    New York, New York, 10029-6696

  • University of Pennsylvania

    Philadelphia, Pennsylvania, 19104

  • Moffitt Cancer Institute

    Tampa, Florida, 33612

Other trials in United States

About this study

Official title: A Phase 1/3 Study Evaluating the Efficacy and Safety of T-Cell Receptor Engineered Donor T Cells in Subjects Undergoing Allogeneic Peripheral Blood Stem Cell Transplantation (ALLOHA-2)

This is a multi-center, non-randomized, concurrent controlled, multi-arm, Phase 1 interventional, open-label, biologic assignment-based umbrella study evaluating the feasibility, safety and preliminary efficacy of an escalating dose regimen of up to 2 doses of TSC-100 and TSC-101 in patients with AML, MDS, or ALL following HCT from a haploidentical donor, MMUD, or MUD

Read the detailed description

A multi-center, non-randomized, controlled, multi-arm, Phase 1 interventional, open label, biologic assignment-based umbrella study is planned to evaluate the feasibility, safety, and preliminary efficacy of repeated dose regimen of TSC-100 and TSC-101 (TSC-100 and TSC-101 is a genetically engineered, donor-derived T cell targeting HA-1 and HA-2 respectively) in patients with AML, MDS, or ALL following HCT from a haploidentical donor, MUD, or MMUD.

The primary objective of this study is to investigate the safety of single and repeated dosing of TSC-100 and TSC-101 in HLA A*02:01 positive patients undergoing haploidentical allogeneic peripheral blood hematopoietic cell transplantation and determine the optimally tolerated dose range. The primary endpoints are: (1) incidence of dose-limiting toxicities (DLTs), and (2) incidence of adverse events (AEs) and serious AEs (SAEs) of TSC-100 and TSC-101 combined with the standard of care (SOC) compared with the SOC alone at 2 years of follow-up. The study will also investigate the efficacy of TSC-100 and TSC-101 combined with the SOC compared with that of the SOC alone to treat the study population and assess the immunogenicity of TSC-100 and TSC-101.

Depending on the HLA type and minor antigen positivity, patients will receive either TSC-100 or TSC-101 combined with the SOC or only SOC. TSC-100 or TSC-101 will be administered intravenously. Standard of care will include reduced intensity conditioning (RIC), hematopoietic cell infusion, and acute graft-versus-host disease (GvHD) prophylaxis. Patients will undergo one of the following RIC regimens, following standard institutional procedures: fludarabine+cyclophosphamide+total body irradiation, fludarabine+melphalan+/-total body irradiation, thiotepa+busulfan+fludarabine, flurdarabine+melphalan+thiotepa or fludarabine+melphalan (for MMUds only). In addition, patients may receive other supportive care measures and infectious prophylaxis as necessary, according to institutional guidelines or standards.

Successive cohorts of patients in the treatment arms will be started according to an interval 3+3 (i3+3) dose escalation design. Once the RP2D is identified, up to 20 additional patients may be enrolled at the RP2D. Dose escalations to the next cohort of TSC-100 and TSC-101 will be considered after the safety review committee (SRC) establishes reasonable safety for all patients enrolled into the current cohort. The safety and necessity of repeat dosing will also be determined by the SRC.

The safety data for all patients that received at least one dose of TSC-100 or TSC-101 in the treatment arms will be included in the safety assessment to proceed to the next dosing level and the dose escalation meeting will occur when the last patient in the cohort completes the 40-day DLT evaluation period. Depending on the number of DLTs observed, the range of patients that could be enrolled in the dose escalation stage of this i3+3 study is 35 to 300, including patients in the control arm.

Conditions
AML, MDS
Being tested
SOC + TSC-101, Control, SOC + TSC-100
Keywords
HA-2, TSC-101, AML, MDS, Adoptive Cell Therapy, T-cell receptor, T lymphocyte, TCR-engineered T cells, bone marrow transplant, haploidentical, allogeneic stem cell transplant, BMT, RIC, HSCT, Hematopoietic stem cell transplantation, ALLOHA-2, Mismatched unrelated donors MMUD, ALLOHA, HA-1, TSC-100

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • SOC + TSC-101Drug

    HA-2 positive or HA-1 negative

  • ControlOther

    SOC alone

  • SOC + TSC-100Drug

    HA-1 positive

Study groups in NCT05473910
Study groupRoleWhat they receive
Treatment Arm (TSC-100)ExperimentalHA-1 positive patients
Receives: Drug: SOC + TSC-100
Treatment Arm (TSC-101)ExperimentalHA-1 negative and HA-2 positive patients
Receives: Drug: SOC + TSC-101
Control Arm (Standard of Care)Active comparatorOther: Control SOC alone
Receives: Other: Control

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Occurrence of dose limiting toxicities

    Number of DLTs observed in patients compared to the control arm

    Measured: 2 years

  2. Occurrence of adverse events

    Number of adverse events in patients compared to control arm

    Measured: 2 years

Secondary outcomes (9)
  1. Comparison of disease free survival in patients versus the control arm

    Disease-free survival in patients versus the control arm at 6 months, defined as the time from date of transplant to death or relapse/progression, whichever comes first. Participants alive and disease free will be censored at the last follow-up.

    Measured: 6 months

  2. Comparison of disease free survival in patients versus the control arm

    Disease-free survival in patients versus the control arm at 12 months, defined as the time from date of transplant to death or relapse/progression, whichever comes first. Participants alive and disease free will be censored at the last follow-up.

    Measured: 12 months

  3. Disease-free survival in patients versus the control arm at 18 months, defined as the time from date of transplant to death or relapse/progression, whichever comes first. Participants alive and disease free will be censored at the last follow-up.

    Disease-free survival at Month 18 defined as the time from date of transplant to death or relapse/progression, whichever comes first. Participants alive and disease free will be censored at the last follow-up.

    Measured: 18 months

  4. Comparison of disease free survival in patients versus the control arm

    Disease-free survival in patients versus the control arm at 24 months, defined as the time from date of transplant to death or relapse/progression, whichever comes first. Participants alive and disease free will be censored at the last follow-up.

    Measured: 24 months

  5. Comparison of relapse rates between patients and control arm

    Relapse rates in patients versus the control arm at 6 months. Relapse is defined by either morphological or cytogenetic evidence of acute leukemia or MDS consistent with pre-transplant features, or radiologic evidence of lymphoproliferative disorders, documented or not by biopsy.

    Measured: 6 months

  6. Comparison of relapse rates between patients and control arm

    Relapse rates in patients versus the control arm at 12 months. Relapse is defined by either morphological or cytogenetic evidence of acute leukemia or MDS consistent with pre-transplant features, or radiologic evidence of lymphoproliferative disorders, documented or not by biopsy.

    Measured: 12 months

  7. Comparison of overall survival between patients and control arm

    Overall survival between patients versus the control arm, defined as the time interval between the date of transplant and death from any cause. Surviving participants will be censored at the last follow up.

    Measured: Up to 2 years

  8. Anti TSC-100 antibodies

    Presence and concentration of anti TSC-100 antibodies.

    Measured: 2 years

  9. Anti TSC-101 antibodies

    Presence and concentration of anti TSC-101 antibodies.

    Measured: 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Jul 2022
  2. Study start1 Nov 2022
  3. Primary completion1 Jun 2026
  4. Study completionJun 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
310 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05473910
Sponsor's protocol ID
TSCAN-001 (Phase 1)
Status last verified
Sep 2026
First submitted
11 Jul 2022
Last updated
5 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing SOC + TSC-101 and SOC + TSC-100 in people with AML and MDS, run by TScan Therapeutics, Inc. at 21 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 25 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 5 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 21 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Occurrence of dose limiting toxicities (time frame: 2 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Oct 2026.

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