AzTrials
AzTrials

Advanced Solid TumorPhase 1/2NCT06237881

A Phase 1/2 Study of KSQ-001EX, Autologous Tumor Infiltrating Lymphocytes Engineered to Inactivate the SOCS1 Gene, in Patients With Select Advanced Solid Tumors

A Phase 1/2 study testing KSQ-001EX, Interleukin-2 and Cyclophosphamide in people with Advanced Solid Tumor and Melanoma, run by M.D. Anderson Cancer Center at 1 site in United States.

Active, not recruiting

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

Official record
Search all trials

Trial summary

To learn if KSQ-001EX is safe to give to participants with advanced forms of solid tumors. Read more about this study

Who is it for?
Ages 18 to 70 years
Conditions the study is for
Advanced Solid Tumor, Melanoma, Lung Neoplasms
What is being tested?
KSQ-001EX, Interleukin-2 and Cyclophosphamide
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
15 participants
Where
1 siteUnited States
Study dates
31 Jan 2024to 1 Jan 2029
Phase
Phase 1/2
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 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diagnosed with one of the following tumor types:
  • Unresectable, incurable and/or metastatic histologically and/or cytologically confirmed melanoma (Stage IIIC/IIID or Stage IV) that has progressed following at least 1 line of prior systemic therapy including treatment with anti-PD-1/PD-L1 inhibitor alone or in combination with anti-CTLA-4 inhibitor or anti-LAG-3 antibody. Note: Up to 5 mucosal melanoma patients can be treated in melanoma expansion cohort only.
  • Histologically and/or cytologically confirmed primary diagnosis of NSCLC which has progressed on standard therapy which includes treatment with platinum-based chemotherapy and checkpoint inhibitor therapy (either given in combination or sequentially)
  • Participants with tumors that have known actionable molecular alteration such as EGFR, ALK, ROS-1, BRAF, RET, MET and KRAS must have progressed on standard directed molecular therapy in addition to platinum-based chemotherapy.
  • Locally advanced, recurrent and/or metastatic histologically and/or cytologically confirmed HNSCC that has been previously treated with at least 1 and no more than 3 lines of prior therapy
  • Participants must have received a platinum-containing chemotherapy regimen for the treatment of primary tumor in locally advanced, or metastatic setting.
Show all 29Show fewer
  • Participants must have received an anti-PD-1/PD-L1 as monotherapy or in combination with chemotherapy • Resectable lesion(s) for KSQ-001EX manufacturing (tumor ≥1.5cm2 or at least 5 core biopsies)
  • At least 1 measurable lesion per RECIST v1.1 (Eisenhauer 2009) following tumor resection for KSQ-001EX manufacturing Note: Lesions in previously irradiated areas should not be selected as a target lesion unless radiation treatment was ≥ 3 months prior, and there has been demonstrated disease progression in the lesion
  • Age: between 18 - 70 years old
  • Life expectancy of ≥ 12 weeks
  • Recovered to ≤ Grade 1 or Baseline toxicity (except alopecia, neuropathy, and endocrinopathies from prior immunotherapy) from prior therapy (per CTCAE)
  • Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
  • Adequate bone marrow function defined as:
  • Absolute neutrophil count (ANC) of ≥ 1 × 109/L
  • Platelet count of ≥ 100.0 × 109/L
  • Hemoglobin of ≥ 9.0 g/dL
  • Adequate renal function defined as calculated creatinine clearance (Cockcroft-Gault) ≥ 40 mL/min
  • Adequate hepatic function defined as:
  • Total bilirubin ≤ 2.0 × upper limit of normal (ULN) unless associated with Gilbert's syndrome
  • Aspartate aminotransferase and alanine aminotransferase ≤ 3.0 × ULN (or ≤ 5 × ULN in patients with liver metastases)
  • Washout period from prior anticancer therapy(ies) of a minimum duration (excluding bridging therapy per Concomitant Medication, Section 6.4) is required prior to the first study treatment (ie, start of LDC therapy) as detailed below:
  • Targeted therapy: prior targeted therapy with a BRAK/MEK, EGFR, ALK, receptor tyrosine kinase, or other-directed agent (eg, erlotinib, afatinib, osimertinib, crizotinib, ceritinib), is allowed provided the washout is a minimum of 21 days or 5 half-lives, whichever is longer prior to start of therapy (LDC)
  • Monoclonal antibodies within 21 days or 5 half-lives or whichever is longer
  • Chemotherapy: adjuvant, neoadjuvant or definitive chemotherapy/chemoradiation is allowed provided the washout is a minimum of 21 days or 5 half-lives, whichever is shorter
  • Radiation therapy: prior external beam radiation is allowed provided a minimum of 14 days have elapsed between the last dose of radiation and first study treatment (LDC)
  • Surgery: previous surgical procedure(s) is permitted provided that wound healing has occurred and at least 14 days have elapsed (for major operative procedures) prior to the first study treatment (LDC)
  • Female participants who are women of childbearing potential (defined as physiologically and anatomically capable of becoming pregnant), confirmed of a negative pregnancy test and agreement to the use of a highly effective contraceptive method or at least 2 effective methods at the same time during study treatment period and for up to 3 months after study treatment (KSQ-001EX infusion). Male participants must be willing to use effective barrier contraception (ie, condoms) during the study treatment period and for up 3 months after study treatment (KSQ-001EX infusion)
  • Capable of understanding and complying with protocol requirements
  • Signed and dated Institutional Review Board (IRB) approved informed consent form before any protocol-directed Screening procedures are performed

Who cannot join

  • Prior organ allograft or prior cell therapy that included LDC or myeloablative chemotherapy regimen
  • Known hypersensitivity to any component of KSQ-001EX or excipient including dimethyl sulfoxide, human serum albumin, LDC regimen (cyclophosphamide or fludarabine) or IL-2 (as applicable)
  • Active or prior documented autoimmune or inflammatory disorders (including inflammatory bowel disease [eg, Grade ≥2 colitis or Crohn's disease], systemic lupus erythematosus, sarcoidosis syndrome, or Wegener syndrome [granulomatosis with polyangiitis], rheumatoid arthritis, etc.]). The following are exceptions to this criterion:
  • Participants with vitiligo or alopecia
  • Participants with hypothyroidism (eg, following Hashimoto syndrome) stable on hormone replacement and stable doses of steroids after immune-mediated hydrophysitis/adrenal insufficiency
  • Any chronic skin condition that does not require systemic therapy
Show all 34Show fewer
  • Participants with celiac disease controlled by diet alone
  • Hypersensitivity to antibiotics of the aminoglycoside group (eg, streptomycin, gentamicin) or penicillin
  • Active, uncontrolled concurrent infection requiring IV antibiotics present at Screening
  • Uveal and/or ocular melanoma
  • Large cell neuroendocrine NSCLC (defined as pathology with > 10% neuroendocrine components)
  • Symptomatic and/or untreated brain metastases (of any size or number) including active leptomeningeal or parenchymal metastases. Note: Participants with definitively treated brain metastases may be considered for enrollment if stable (defined as stable for 1-month post-central nervous system directed therapy) and does not require ongoing steroid treatment
  • Women who are pregnant or nursing
  • Seropositive for human immunodeficiency virus (HIV) 1 or 2 or acquired immunodeficiency syndrome, or active infection with hepatitis B virus (HBV) or hepatitis C virus (HCV) Note: Participants with positive HCV antibody may be eligible if HCV ribonucleic acid [RNA] is undetectable on a quantitative HCV RNA assay, following discussion with the Sponsor
  • Any form of primary immunodeficiency (eg, Severe Combined Immunodeficiency Disease)
  • Any known clinically significant or concurrent acute liver disease, including viral hepatitis
  • Previous solid organ or hematopoietic cell transplant
  • Need for treatment with steroids at stable doses (> 10 mg/day prednisone or equivalent)
  • Topical, ophthalmic, or inhaled steroid medications are allowed
  • Systemic steroid (> 10 mg/day) use is not allowed for 14 days prior to enrollment
  • Systemic steroids ≤ 10 mg/day are permitted if for supplemental endocrine only
  • Live or unattenuated vaccine < 28 days prior to first dose of LDC regimen
  • History of stroke, transient ischemic attack, unstable angina, or myocardial infarction, within 3 months prior to first dose of study treatment
  • Symptomatic congestive heart failure according to New York Heart Association (NYHA) classification, Class III or IV (per NYHA Classification), unstable angina pectoris, clinically significant cardia arrhythmia, or left ventricular ejection fraction < 45%
  • Prolongation of QT/QTc interval (QTc interval > 480 msec) using the Frederica method of QTc analysis
  • Unable to walk a distance of 80% predicted for age and sex or develop hypoxia (SPO2 < 90%) during a 6-minute walk test (this test can be performed in place of pulmonary function test [PFT] for those unable to perform a reliable PFT due to complex upper airway anatomy)
  • > 80% stenosis based on carotid doppler ultrasound for patients with NSCLC and HNSCC with > 35 pack year smoking history
  • Obstructive or restrictive pulmonary disease
  • Post-bronchodilator values: forced expiratory volume (FEV1)/forced vital capacity > 70% or FEV1 > 50% of predicted normal are required for study entry
  • Suspected active pneumonitis or interstitial lung disease (confirmed by radiography or computed tomography [CT])
  • Treatment on another study with other investigational therapeutic interventional study within 28 days to start of LDC regimen
  • Known additional malignancy that is active and/or progressive requiring treatment; exceptions including basal cell or squamous cell skin cancer, or other cancer for which the participant has been disease-free for at least 2 years
  • Psychiatric illness that would limit compliance with study requirements, as determined by the Investigator
  • Other severe, acute, or chronic medical condition or laboratory abnormality that may increase the risk associated with study participation or study drug administration, or that may interfere with the interpretation of the study results, and in the judgement of the Investigator, would the participant inappropriate for the study.

Trial locations and contacts

1 site in 1 country.

United States1 site

  • MD Anderson Cancer Center

    Houston, Texas, 77030

Other trials in United States

About this study

To learn if KSQ-001EX is safe to give to participants with advanced forms of solid tumors.

Read the detailed description

Phase I Primary Objectives • To evaluate the safety and tolerability of KSQ-001EX in adult participants with advanced solid tumors (melanoma, HNSCC, NSCLC)

Phase I Primary Endpoint

  • Incidence of dose-limiting toxicities (DLTs)

Phase I Secondary Objectives

  • Determine expansion dose
  • Assess the safety and tolerability of KSQ-001EX in participants with advanced solid tumors (melanoma, HNSCC, NSCLC)
  • Evaluate preliminary antitumor activity of KSQ-001EX in participants with advanced solid tumors
  • Evaluate the feasibility of the manufacturing process.

Phase I Secondary Endpoints

  • Incidence and severity of treatment-emergent adverse events (TEAEs) and change from Baseline in laboratory results
  • Objective response rate (ORR), duration of response (DOR), time to response (TTR) as assessed by the Investigator, per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
  • Manufacturing success rate

Phase 2 Primary Objectives • To assess the anti-tumor activity of KSQ-001EX in patients with advanced malignant solid tumors

Phase 2 Primary Endpoint

  • ORR per RECIST v1.1

Phase 2 Secondary Objectives

  • Assess the safety and tolerability of KSQ-001EX in patients with advanced solid tumors (melanoma, HNSCC, NSCLC)
  • Evaluate anti-tumor activity of KSQ-001EX in patients with advanced malignant solid tumors
  • Evaluate overall survival (OS)
  • Evaluate the feasibility of the manufacturing process

Phase 2 Secondary Endpoints

  • Incidence and severity of TEAEs and change from Baseline in laboratory results
  • Complete response rate (CRR), DOR, TTR, progression-free survival (PFS) per RECIST v1.1
  • OS
  • Manufacturing success rate

Phase 1/2 Exploratory Objectives

  • Determine persistence of KSQ-001EX
  • Assess changes in immune and pharmacodynamic markers following KSQ-001EX infusion
  • Assess correlations of KSQ-001EX biomarkers and KSQ-001EX DP characteristics with safety, clinical activity, and KSQ-001EX persistence

Phase 1/2 Exploratory Endpoints

  • KSQ-001EX levels in blood and tumor tissue
  • Change from Baseline in soluble immune factors, lymphocytes and immune markers
  • KSQ-001EX pharmacodynamic markers, KSQ-001EX DP release criteria, and KSQ-001EX persistence
Being tested
KSQ-001EX, Interleukin-2, Cyclophosphamide, Fludarabine
Medical subject headings
Melanoma, Lung Neoplasms, Head and Neck Neoplasms

What participants receive

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

Study groups in NCT06237881
Study groupRoleWhat they receive
Arm 1: Phase 1- Safety Lead-in (Cohort 1)ExperimentalApproximately 6 patients with melanoma, NSCLC or HNSCC will be enrolled in the Safety Lead-in phase of the study with a KSQ-001EX dose.
Receives: Drug: KSQ-001EX; Drug: Cyclophosphamide; Drug: Fludarabine
Arm 2: Phase 1- Safety Lead-in (Cohort 2)ExperimentalPatients in Cohort 2 will receive IL-2 dosing (600,000 international units [IU]/kg administered every 8 to 12 hours for up to 6 doses, as tolerated).
Receives: Drug: KSQ-001EX; Drug: Interleukin-2; Drug: Cyclophosphamide; Drug: Fludarabine
Arm 3: Phase 2- Expansion PhaseExperimentalIt is expected that approximately 20 participants will be enrolled in each of the 3 indication specific cohorts.
Receives: Drug: KSQ-001EX; Drug: Cyclophosphamide; Drug: Fludarabine

What is being measured

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

  1. Safety and adverse events (AEs)

    Incidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0

    Measured: Through study completion; an average of 1 year.

Timeline

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

  1. First posted2 Feb 2024
  2. Study start31 Jan 2024
  3. Primary completion1 Jan 2027 (estimated)
  4. Study completion1 Jan 2029 (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 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
15 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06237881
Sponsor's protocol ID
2023-0571
Other IDs
NCI-2024-00734
Status last verified
Aug 2026
First submitted
25 Jan 2024
Last updated
10 Aug 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing KSQ-001EX, Interleukin-2 and Cyclophosphamide in people with Advanced Solid Tumor and Melanoma, run by M.D. Anderson Cancer Center at 1 site 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 29 inclusion and 34 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 10 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site 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 combined 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.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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?

Safety and adverse events (AEs) (time frame: Through study completion; an average of 1 year.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06237881.

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 10 Aug 2026.

AzTrials uses cookies for analytics and advertising. You can accept or reject them; the site works either way. Privacy Policy.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in