Recruiting
Phase 1
Phase 2

Peripheral Blood Lymphocytes

Sponsor:

National Cancer Institute (NCI)

Code:

NCT03190941

Conditions

Pancreatic Cancer

Gastric Cancer

Gastrointestinal Cancer

Colon Cancer

Rectal Cancer

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

Interventions

Cyclophosphamide

Fludarabine

Anti-KRAS G12V mTCR PBL

Aldesleukin

Study Details

Brief summary:

Background:

A new cancer therapy involves taking white blood cells from a person, growing them in the lab, genetically modifying them, then giving them back to the person. This therapy is called gene transfer using anti-KRAS G12V mTCR cells.

Objective:

To see if anti-KRAS G12 V mTCR cells are safe and can shrink tumors.

Eligibility:

Adults at least 18 years old with cancer that has the KRAS G12V molecule on the surface of tumors.

Design:

In another protocol, participants will:

Be screened

Have cells harvested and grown

Have leukapheresis

In this protocol, participants will have the procedures below.

Participants will be admitted to the hospital.

Over 5 days, participants will get 2 chemotherapy medicines as an infusion via catheter in the upper chest.

A few days later, participants will get the anti-KRAS G12V mTCR cells via catheter.

For up to 3 days, participants will get a drug to make the cells active.

A day after getting the cells, participants will get a drug to increase their white blood cell count. This will be a shot or injection under the skin.

Participants will recover in the hospital for 1-2 weeks. They will have lab and blood tests.

Participants will take an antibiotic for at least 6 months.

Participants will have visits every few months for 2 years, and then as determined by their doctor.

Visits will be 1-2 days. They will include lab tests, imaging studies, and physical exam. Some visits may include leukapheresis or blood drawn.

Participants will have blood collected over several years.

Conditions

Pancreatic Cancer

Gastric Cancer

Gastrointestinal Cancer

Colon Cancer

Rectal Cancer

Study ID

NCT03190941

Start date

Sep 21, 2017

Status verified date

Aug 11, 2026

Completion date

Jun 29, 2028

Anticipated

Primary completion date

Jun 29, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 70+

Healthy Volunteers: Not accepted

  • INCLUSION CRITERIA:
  • Measurable (per RECIST V1.1 criteria, metastatic, or unresectable malignancy expressing G12V mutated KRAS as assessed by one of the following methods: RT-PCR on tumor tissue, tumor DNA sequencing, or any other CLIA-certified laboratory test on resected tissue. Patients shown to have tumors expressing G12V mutated NRAS and HRAS will also be eligible as these oncogenes share complete amino acid homology with G12V mutated KRAS for their first 80 N-terminal amino acids, completely encompassing the target epitope.
  • Patients must be HLA-A\*11:01 positive as confirmed by the NIH Department of Transfusion Medicine.
  • Confirmation of the diagnosis of cancer by the NCI Laboratory of Pathology.
  • Patients must have:

  • previously received standard systemic therapy for their advanced cancer and have been either non-responders or have recurred, specifically:

  • Patients with metastatic colorectal cancer must have had at least two systemic chemotherapy regimens that include 5FU, leucovorin, bevacizumab, oxaliplatin, and irinotecan (or similar agents), or have contraindications to receiving those medications.
  • Patients with pancreatic cancer must have received gemcitabine, 5FU, and oxaliplatin (or similar agents), or have contraindications to receiving those medications.
  • Patients with non-small cell lung cancer (NSCLC) must have had appropriate targeted therapy as indicated by abnormalities in ALK, EGFR, or expression of PDL- 1. Other patients must have had platinum-based chemotherapy.
  • Patients with ovarian cancer or prostate cancer must have had approved first-line chemotherapy.

OR

  • declined standard treatment
  • Patients with 3 or fewer brain metastases that are less than 1 cm in diameter and asymptomatic are eligible. Lesions that have been treated with stereotactic radiosurgery must be clinically stable for one month after treatment for the patient to be eligible. Patients

with surgically resected brain metastases are eligible.

  • Age greater than or equal to 18 years and less than or equal to 72 years.
  • Clinical performance status of ECOG 0 or 1
  • Patients must be willing to practice birth control from the time of enrollment on this study and 12 months after the last dose of combined chemotherapy for women and for 4 months after treatment for men.
  • Women of child-bearing potential must be willing to undergo pregnancy testing prior to the start of treatment because of the potentially dangerous effects of the treatment on the fetus.

NOTE: Certain malignancies may secrete hormones that produce false positive pregnancy tests. Serial blood testing (e.g. HCG measurements) and/ or ultrasound may be performed for clarification.

  • Serology

  • Seronegative for HIV antibody. (The experimental treatment being evaluated in this protocol depends on an intact immune system. Patients who are HIV seropositive may have decreased immune-competence and thus may be less responsive to the experimental treatment and more susceptible to its toxicities.)
  • Seronegative for hepatitis B antigen, and seronegative for hepatitis C antibody. If hepatitis C antibody test is positive, then patient must be tested for the presence of antigen by RT-PCR and be HCV RNA negative.
  • Hematology

  • ANC greater than 1000/mm\^3 without the support of filgrastim
  • WBC greater than or equal to 2500/mm\^3
  • Platelet count greater than or equal to 80,000/mm\^3
  • Hemoglobin > 8.0 g/dL. Subjects may be transfused to reach this cut-off.
  • Chemistry

  • Serum ALT/AST less than or equal to 5.0 times ULN
  • Total bilirubin less than or equal to 2.0 mg/dL, except in patients with Gilbert s Syndrome, who must have a total bilirubin less than 3.0 mg/dL.
  • Patients must have either an eGFR > 60 mL/m (based on serum creatinine and lab nomogram) or a formal 6-24h CrCl > 60 mL/m.
  • Patients must have completed any prior systemic therapy at the time of enrollment.

Note: Patients may have undergone minor surgical procedures or limited field radiotherapy within the four weeks prior to enrollment, as long as related major organ toxicities have recovered to less than or equal to grade 1.

  • Ability of subject to understand and the willingness to sign a written informed consent document.
  • Willing to sign a durable power of attorney.
  • Subjects must be co-enrolled on protocol 03C0277.

EXCLUSION CRITERIA:

  • Large volume pulmonary irradiation.
  • Women of child-bearing potential who are pregnant or breastfeeding because of the potentially dangerous effects of the treatment on the fetus or infant.
  • Concurrent systemic steroid therapy.
  • Active systemic infections requiring anti-infective treatment, coagulation disorders, or any other active or uncompensated major medical illnesses.
  • Any form of primary immunodeficiency (such as Severe Combined Immunodeficiency Disease).
  • Concurrent opportunistic infections (The experimental treatment being evaluated in this protocol depends on an intact immune system. Patients who have decreased immune-competence may be less responsive to the experimental treatment and more susceptible to its toxicities.)
  • History of severe immediate hypersensitivity reaction to cyclophosphamide, fludarabine, or aldesleukin.
  • History of coronary revascularization or ischemic symptoms
  • For select patients with a clinical history prompting cardiac evaluation: last known LVEF less than or equal to 45%.
  • For select patients with a clinical history prompting pulmonary evaluation: known FEV1 less than or equal to 50% or DLCO less than 60%.
  • Patients who are receiving any other investigational agents.

Study Design

Enrollment

110 participants

Anticipated

Allocation

Non randomized

Intervention Model

Sequential

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: 1/Phase I

Non-myeloablative, lymphodepleting preparative regimen of cyclophosphamide and fludarabine + escalating doses of anti-KRAS G12V mTCR PBL + high-dose aldesleukin

experimental: 2/Phase II

Non-myeloablative, lymphodepleting preparative regimen of cyclophosphamide and fludarabine + MTD of anti-KRAS G12V mTCR PBL + high-dose aldesleukin

Interventions

Cyclophosphamide

Days -7 and -6: Cyclophosphamide 60 mg/kg/day x 2 days IV in 250 mL D5W infused simultaneously with mesna 15 mg/kg/day over 1 hour x 2 days.

Fludarabine

Days -7 to -3: Fludarabine 25 mg/m2/day IVPB daily over 30 minutes for 5 days.

Anti-KRAS G12V mTCR PBL

Day 0: Cells will be infused intravenously on the Patient Care Unit over 20-30 minutes (2-4 days after the last dose of fludarabine).

Aldesleukin

Aldesleukin 720,000 IU/kg IV (based on total body weight) over 15 minutes approximately every 8 hours beginning within 24 hours of cell infusion and continuing for up to 3 days (maximum 9 doses).

Primary outcome measure

  • Response rate [ Time Frame: 6 weeks and 12 weeks following administration of the cell product, then every 3 months x3, then every 6 months x 2 years, then per PI discretion ]
  • Frequency and severity of treatment-related adverse events [ Time Frame: From time of cell infusion to two weeks after cell infusion ]

Central Contacts and Locations

Central contacts

NCI SB Immunotherapy Recruitment Center

(866) 820-4505IRC@nih.gov

Locations

National Institutes of Health Clinical Center

Recruiting

Bethesda, Maryland, United States, 20892

Contacts

For more information at the NIH Clinical Center contact NCI/Surgery Branch Recruitment Center

866-820-4505irc@nih.gov

More Information

Sponsor

National Cancer Institute (NCI)

Last update posted

Aug 24, 2026

Last verified

Aug 11, 2026

Keywords

  • KRAS
  • HRAS
  • NRAS
  • Cell Therapy
  • Immunotherapy

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-10. This information was provided to ClinicalTrials.gov by National Cancer Institute (NCI) on 2026-08-24.