ClinicalTrials.gg
RecruitingNCT05877599Updated Sep 29, 2026

A Study of NT-175 in Adult Participants With Advanced Malignancies That Are Positive for HLA-A*02:01 and the TP53 R175H Mutation

A Phase 1 interventional study of NT-175 in Non-small Cell Lung Cancer, Head and Neck Squamous Cell Carcinoma and Colorectal Carcinoma, sponsored by AstraZeneca. Recruiting at 20 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-29.

Sponsored by AstraZeneca · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Jul 2023; still recruiting 3 years 4 months later.
Updated Sep 29, 2026Site recruiting status changed3 sites removedGo to Updates ↓

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Phase
Phase 1
Study type
Interventional
Enrollment
45
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 209 studies in Carcinoma, Non-Small-Cell Lung by AstraZeneca — 25 open to participants now, 78 under way, 28 of them phase 3. Carcinoma, Non-Small-Cell Lung · AstraZeneca.

Planned enrollment
105th of 137
45 · median 152
Started
2023
with 8 others
Phase 1
36 of 209
3 open now
Primary completion
2029-07
later than 65 of 77 live
Registered
168th of 209
by date

Among the 209 studies in Carcinoma, Non-Small-Cell Lung by AstraZeneca, this one is the 105th largest by planned enrollment of the 137 interventional ones that give a count, is one of 9 that started in 2023, is one of 36 in phase 1, reaches primary completion later than 65 of the 77 other live ones, and was the 168th registered.

Carcinoma, Non-Small-Cell Lung

7,624 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,837 are open to participants now.

Browse Carcinoma, Non-Small-Cell Lung studies →

Open to participants now

25 of the 209 studies in Carcinoma, Non-Small-Cell Lung by AstraZeneca are open now, in 12 countries. Recruiting first, the newest first:

19 more — sign in →

By country, each count listing its studies:

All 25 open studies →

Who these studies take

Of the 1,326 Carcinoma, Non-Small-Cell Lung studies recruiting now, 988 (75%) set no upper age limit and 225 (17%) stop at 75 or younger; 34 take children under 18; 40 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Phase I Study of NT-175, an autologous T cell therapy product genetically engineered to express an HLA-A*02:01-restricted T cell receptor (TCR), targeting TP53 R175H mutant malignancies

Read the detailed description

This is a Phase 1, open-label, multicentre platform study to evaluate the safety and preliminary antitumour activity of NT-175 in HLA-A*02:01 participants with advanced malignancies that are positive for the TP53 R175H mutation.

Dose Escalation will investigate escalating doses of NT-175 in adult subjects with eligible histologies and will evaluate the safety and MTD and/or RDE/RP2D.

Cohort expansion will further evaluate the safety and preliminary anti-tumour activity at or below the MTD in disease specific histologies and determine the RP2D.

Dose Expansion will further evaluate the preliminary anti-tumour activity and safety of NT-175 at the RP2D in disease specific settings.

03

Conditions studied

  • Non-small Cell Lung Cancer
  • Head and Neck Squamous Cell Carcinoma
  • Colorectal Carcinoma
  • Pancreatic Adenocarcinoma
  • Breast Cancer
  • Other Solid Tumors
  • Ovarian Cancer
  • Myeloid Neoplasms (AML/MDS)

Keywords

  • Cell therapy
  • TP53
  • Solid tumors
  • Non-small cell lung cancer
  • Head and neck squamous cell carcinoma
  • Colorectal carcinoma
  • Pancreatic adenocarcinoma
  • Breast Cancer
  • Ovarian Cancer
  • AML
  • MDS
  • TCR
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria (Module 1)

  • Subjects must be at least 18 years of age
  • Subject must be diagnosed with one of the histologies below:

    • NSCLC
    • Colorectal adenocarcinoma
    • HNSCC
    • Pancreatic adenocarcinoma
    • Breast cancer
    • Ovarian cancer
    • Any other solid tumor
  • Tumors must harbor a TP53 R175H variant mutation and subject must be HLA-A*02:01 positive (at least 1 allele)
  • Subject has advanced solid cancer, defined as unresectable, advanced, and/or disease (Stage III or IV) after at least 1 line of approved systemic standard of care (SOC) treatment regimen and for which there are no available curative treatment options.
  • Subject has at least 1
  • (ECOG) performance status of 0 to 1
  • Adequate hematological, renal, hepatic, pulmonary, and cardiac function

Key Exclusion Criteria (Module 1)

  • Any another primary within the 3 years prior to enrollment
  • Known, active primary central nervous system (CNS) malignancy
  • History of prior adoptive cell and gene therapy, stem cell transplant or solid organ transplantation.
  • History of cardiac disease within the 6 months prior to enrollment or heart failure at any time prior to enrollment.
  • Systemic therapy within at least 2 weeks or 3 half-lives, whichever is shorter, prior to enrollment.
  • Any form of primary immunodeficiency.
  • Known to have Li-Fraumeni syndrome or is known to have relatives who are diagnosed with Li-Fraumeni syndrome.

Key Inclusion Criteria (Module 2 - hematological malignancies)

  • At least 18 years of age
  • Diagnosis of AML or MDS that allows for efficacy assessments
  • Confirmation of TP53 R175H variant mutation in cancer cells
  • Subject must be HLA-A*02:01 positive (at least 1 allele)
  • ECOG performance status of 0 to 1

Key Exclusion Criteria (Module 2 - hematological malignancy)

  • Acute promyelocytic leukaemia or isolated extramedullary disease
  • Another primary malignancy within 2 years (with exceptions)
  • HSCT within 100 days or for GvHD within 4 weeks
  • History of CNS or other extramedullary leukaemic involvement unless a lumbar puncture is negative for leukemic cells
  • Prior stroke, ischemic attack, significant cardiac disease, heart failure
  • Prior adoptive modified cell therapy
  • Known to have Li-Fraumeni syndrome or is known to have relatives who are diagnosed with Li-Fraumeni syndrome.
Terms in these criteria, in plain language(7)

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.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

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.

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.

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.

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.

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
45 participants (estimated)

Study arms

  • Experimental
    NT-175 for advanced malignancies

    TCR T cell therapy product

    Biological: NT-175

Interventions

  • BiologicalNT-175

    * Pre-conditioning by non-myeloablative chemotherapy with fludarabine and cyclophosphamide * Single infusion Autologous, engineered T Cells targeting TP53 R175H * Post-infusion recombinant interleukin-2 (rIL-2)

06

What researchers measure

Primary outcomes

  1. Module 1, Part 1: Safety of NT-175 in participants with unresectable, advanced, and/or metastatic solid tumours

    Incidence of dose-limiting toxicities (DLTs) after the infusion of NT-175

    Time frame: 28 days after infusion

  2. Module 1, Part 1: Safety of NT-175 in participants with unresectable, advanced, and/or metastatic solid tumours

    Incidence of Treatment Emergent Adverse Events (TEAE) Serious Adverse Events (SAE)

    Time frame: Up to 24 months post-infusion

  3. Module 1, Part 2: Preliminary anti-tumour activity of NT-175 in participants with unresectable, advanced, and/or metastatic solid tumours

    Per RECIST v1.1 determined by Investigator assessment: * Objective Response Rate (ORR) * Best Overall Response (BOR) * Duration of Response (DOR) * Clinical Benefit Rate (CBR) * Time to Response (TTR) * Progression-free survival (PFS) * Overall Survival (OS)

    Time frame: Up to 24 months after infusion

  4. Module 2: Safety of NT-175 in participants with haematological malignancies

    \- Incidence of dose-limiting toxicities (DLTs) after the infusion of NT-175

    Time frame: Up to 28 days after infusion

  5. Module 2: Safety of NT-175 in participants with haematological malignancies

    * Incidence of Treatment Emergent Adverse Events (TEAE) * Serious Adverse Events (SAE)

    Time frame: Up to 24 months after infusion

Secondary outcomes

  1. Module 1, Part 1: Preliminary anti-tumor activity of NT-175 in participants with unresectable, advanced, and/or metastatic solid tumours

    Per RECIST v1.1 determined by Investigator assessment: * Objective Response Rate (ORR) * Best Overall Response (BOR) * Duration of Response (DOR) * Clinical Benefit Rate (CBR) * Time to Response (TTR) * Progression-free survival (PFS) * Overall Survival (OS)

    Time frame: Up to 24 months after infusion

  2. Module 2: Evaluate preliminary anti-tumour activity in participants with AML or MDS

    Per ELN 2022 criteria for AML and per IWG 2023 criteria for MDS by Investigator assessment: * Objective Response Rate (ORR) * Time to Response (TTR) * Duration of Response (DOR) * Event-free survival (EFS) By Investigator assessment: * Transfusion Independence (TI) * Overall Survival (OS) * Complete Response (CR) + Complete response with partial haematological recover (CRh) * Complete Response with limited count recovery (CRL) (CRuni + CRbi) in MDS * MDS time to Progression to AML * Proportion of participants with subsequent Haematopoietic Stem Cell Transplantation (HSCT)

    Time frame: Up to 24 months after infusion

07

Study locations

16 of 20 sites recruiting
  • Research Site
    Gilbert, Arizona 85234, United States
    Recruiting
  • Research Site
    Duarte, California 91010, United States
    Recruiting
  • Research Site
    Los Angeles, California 90095, United States
    Recruiting
  • Research Site
    Newport Beach, California 92663, United States
    Recruiting
  • Research Site
    Santa Monica, California 90404, United States
    Recruiting
  • Research Site
    Jacksonville, Florida 32224, United States
    Recruiting
  • Research Site
    Miami, Florida 33136, United States
    Withdrawn

    Not enrolling at this site.

  • Research Site
    Tampa, Florida 33612, United States
    Withdrawn

    Not enrolling at this site.

  • Research Site
    Boston, Massachusetts 02115, United States
    Recruiting
  • Research Site
    Boston, Massachusetts 02215, United States
    Recruiting
  • Research Site
    New Brunswick, New Jersey 08901, United States
    Recruiting
  • Research Site
    New York, New York 10065, United States
    Recruiting
  • Research Site
    Charlotte, North Carolina 28204, United States
    Withdrawn

    Not enrolling at this site.

  • Research Site
    Winston-Salem, North Carolina 27103, United States
    Withdrawn

    Not enrolling at this site.

  • Research Site
    Portland, Oregon 97213, United States
    Recruiting
  • Research Site
    Pittsburgh, Pennsylvania 15232, United States
    Recruiting
  • Research Site
    Nashville, Tennessee 37203, United States
    Recruiting
  • Research Site
    Houston, Texas 77030, United States
    Recruiting
  • Research Site
    Round Rock, Texas 78665, United States
    Recruiting
  • Research Site
    Milwaukee, Wisconsin 53226, United States
    Recruiting
08

References and documents

Individual participant data

Plan to share: Yes — Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

Time frame: AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Access criteria: When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

Data sharing details ↗ · vivli.org

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2023 (actual). Primary completion is estimated for Jul 2029, 72 months after the start.

Of 473 industry-sponsored phase 1 interventional studies under Carcinoma, Non-Small-Cell Lung, half reached primary completion within 49 months of starting (the median), counting those still running; a quarter within 29 and three quarters within 66. This study's planned 72 months is above that.

Counting every sponsor, half of 699 studies reached it within 50 months; a quarter within 31 and three quarters within 70.

How these figures are worked out, and which studies are left out of them.

Registered
May 17, 2023
First posted
May 26, 2023
StartActual
Jul 12, 2023
Primary completionEst.
Jul 31, 2029
CompletionEst.
Jul 31, 2029
Last update
Sep 29, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Sites
3 sites removed. 2 sites changed recruiting status (2 now recruiting)
Show 2 sites
  • Research Site · Los Angeles, United StatesNot yet recruiting→Recruiting
  • Research Site · Boston, United StatesNot yet recruiting→Recruiting
Show 3 removed
  • Research Site · Duarte, United States
  • Research Site · New York, United States
  • Research Site · Houston, United States
Sep 29, 2026
Show all 1 update
  1. Sep 29, 2026
    3 sites removed. 2 sites changed recruiting status (2 now recruiting)
    Show 2 sites
    • Research Site · Los Angeles, United StatesNot yet recruiting→Recruiting
    • Research Site · Boston, United StatesNot yet recruiting→Recruiting
    Show 3 removed
    • Research Site · Duarte, United States
    • Research Site · New York, United States
    • Research Site · Houston, United States
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT05877599
Lead sponsor
AstraZeneca
Responsible party
Sponsor
First posted
May 26, 2023
Start date
Jul 12, 2023
Primary completion
Jul 31, 2029 (estimated)
Completion
Jul 31, 2029 (estimated)
Last update
Sep 29, 2026

Study contacts

AstraZeneca Clinical Study Information Center
Contact
information.center@astrazeneca.com
1-877-240-9479
AstraZeneca
study director · AstraZeneca

Oversight

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

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