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QUILT-3.090: NANT Squamous Cell Carcinoma (SCC) Vaccine: Subjects With SCC Who Have Progressed

QUILT-3.090: NANT Squamous Cell Carcinoma (SCC) Vaccine: Molecularly Informed Integrated Immunotherapy Combining (haNK) Cell Therapy With Adenoviral and Yeast-based Vaccines to Induce T-cell Responses in Subjects With SCC Who Have Progressed on or After Platinum-based Chemotherapy and Anti-programmed Cell Death Protein 1 (PD-1)/Programmed Death-ligand 1 (PD-L1) Therapy

Status
Terminated
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03387111
Enrollment
4
Registered
2017-12-29
Start date
2018-01-09
Completion date
2021-01-11
Last updated
2024-08-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Squamous Cell Carcinoma

Brief summary

This is a phase 1b/2 study to evaluate the safety and efficacy of metronomic combination therapy in subjects with SCC who have progressed on or after previous platinum-based chemotherapy and anti-PD-1/PD-L1 therapy. Phase 2 will be based on Simon's two-stage optimal design.

Detailed description

Treatment will be administered in 2 phases, an induction and a maintenance phase, as described below. Subjects will continue induction treatment for up to 1 year. Treatment in the study will be discontinued if the subject experiences progressive disease (PD) or unacceptable toxicity (not corrected with dose reduction), withdraws consent, or if the Investigator feels it is no longer in the subject's best interest to continue treatment. Those who have a complete response (CR) in the induction phase will enter the maintenance phase of the study. Subjects who experience ongoing stable disease (SD) or an ongoing partial response (PR) at 1 year may enter the maintenance phase at the Investigator's and Sponsor's discretion. Subjects may remain in the maintenance phase of the study for up to 1 year. The duration of the maintenance phase can exceed 1 year if the subject continues to benefit, per the Investigator's and Sponsor's discretion. Treatment will continue in the maintenance phase until the subject experiences PD or unacceptable toxicity (not corrected with dose reduction), withdraws consent, or if the Investigator feels it is no longer in the subject's best interest to continue treatment. The time on study treatment, including both the induction and maintenance phases, is up to 2 years. The duration of the study may exceed 2 years if the subject remains in the maintenance phase for more than 1 year, as described above.

Interventions

Aldoxorubicin hydrochloride

BIOLOGICALETBX-011

Ad5 \[E1-, E2b-\]-CEA

BIOLOGICALETBX-021

Ad5 \[E1-, E2b-\]-HER2

BIOLOGICALETBX-051

Ad5 \[E1-, E2b-\]-Brachyury vaccine

BIOLOGICALETBX-061

Ad5 \[E1-, E2b-\]-MUC1

BIOLOGICALGI-4000

Vaccine derived from recombinant Saccharomyces cerevisiae yeast expressing mutant Ras proteins

BIOLOGICALGI-6207

Vaccine derived from recombinant Saccharomyces cerevisiae yeast expressing mutant CEA proteins

BIOLOGICALGI-6301

Vaccine derived from recombinant Saccharomyces cerevisiae yeast expressing mutant Brachyury yeast proteins

NK-92 \[CD16.158V, ER IL-2\]

DRUGAvelumab

Recombinant human anti-PD-L1 IgG1 monoclonal antibody

DRUGbevacizumab

Recombinant human anti-VEGF IgG1 monoclonal

DRUGCapecitabine

5'-deoxy-5-fluoro-N-\[(pentyloxy) carbonyl\]-cytidine

DRUGCetuximab

Cetuximab is an epidermal growth factor receptor (EGFR) antagonist.

DRUGCisplatin

cis-diamminedichloroplatinum(II)

DRUGCyclophosphamide

2-\[bis(2-chloroethyl)amino\]tetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide monohydrate

DRUGFluorouracil

5-fluoro-2,4 (1H,3H)-pyrimidinedione

DRUGLeucovorin

L-Glutamic acid, N-\[4-\[\[(2-amino-5-formyl-1,4,5,6,7,8-hexahydro-4-oxo-6-pteridinyl)methyl\]amino\]benzoyl\]-, calcium salt

DRUGnab-Paclitaxel

Benzenepropanoic acid, β-(benzoylamino)-α-hydroxy-(2aR, 4S, 4aS, 6R, 9S, 11S, 12S, 12aR, 12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a, 3, 4, 4a, 5, 6, 9, 10, 11, 12, 12a, 12b-dodecahydro-4,11-dihydroxy-4a, 8, 13, 13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca\[3,4\]benz\[1,2-b\]oxet-9-y1ester,(αR,βS)-(9CI) bound to albumin

Necitumumab is a recombinant human lgG1 monoclonal antibody.

PROCEDURESBRT

Stereotactic Body Radiation Therapy

BIOLOGICALN-803

Recombinant human superagonist interleukin-15 (IL-15) complex \[also known as IL-15N72D:IL-15RuSu/IgGI Fe complex1)

Sponsors

ImmunityBio, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age ≥ 18 years. 2. Able to understand and provide a signed informed consent that fulfills the relevant IRB or Independent Ethics Committee (IEC) guidelines. 3. Histologically-confirmed HNSCC or squamous NSCLC with progression on or after platinum-based chemotherapy and anti-PD-1/PD-L1 therapy. 4. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2. 5. Have at least 1 measurable lesion of ≥ 1.0 cm. 6. Must have a recent formalin-fixed, paraffin-embedded (FFPE) tumor biopsy specimen following the conclusion of the most recent anticancer treatment. If an historic specimen is not available, the subject must be willing to undergo a biopsy during the screening period, if considered safe by the Investigator. If safety concerns preclude collection of a biopsy during the screening period, a tumor biopsy specimen collected prior to the conclusion of the most recent anticancer treatment may be used. 7. Must be willing to provide blood samples prior to the start of treatment on this study. 8. Must be willing to provide a tumor biopsy specimen 8 weeks after the start of treatment, if considered safe by the Investigator. 9. Ability to attend required study visits and return for adequate follow-up, as required by this protocol. 10. Agreement to practice effective contraception for female subjects of child-bearing potential and non-sterile males. Female subjects of child-bearing potential must agree to use effective contraception for up to 1 year after completion of therapy, and non-sterile male subjects must agree to use a condom for up to 4 months after treatment. Effective contraception includes surgical sterilization (eg, vasectomy, tubal ligation), two forms of barrier methods (eg, condom, diaphragm) used with spermicide, intrauterine devices (IUDs), and abstinence.

Exclusion criteria

1. Serious uncontrolled concomitant disease that would contraindicate the use of the investigational drug used in this study or that would put the subject at high risk for treatment-related complications. 2. Systemic autoimmune disease (eg, lupus erythematosus, rheumatoid arthritis, Addison's disease, or autoimmune disease associated with lymphoma). 3. History of organ transplant requiring immunosuppression. 4. History of or active inflammatory bowel disease (eg, Crohn's disease, ulcerative colitis). 5. Inadequate organ function, evidenced by the following laboratory results: 1. Absolute neutrophil count \< 1,000 cells//mm\^3. 2. Uncorrectable grade 3 anemia (hemoglobin \< 8 g/dL). 3. Platelet count \< 75,000 cells/mm\^3. 4. Total bilirubin greater than the upper limit of normal (ULN; unless the subject has documented Gilbert's syndrome). 5. Aspartate aminotransferase (AST \[SGOT\]) or alanine aminotransferase (ALT \[SGPT\]) \> 2.5 × ULN (\> 5 × ULN in subjects with liver metastases). 6. Alkaline phosphatase levels \> 2.5 × ULN (\> 5 × ULN in subjects with liver metastases, or \>10 × ULN in subjects with bone metastases). 7. Serum creatinine \> 2.0 mg/dL or 177 μmol/L. 8. Serum anion gap \> 16 mEq/L or arterial blood with pH \< 7.3. 6. Uncontrolled hypertension (systolic \> 160 mm Hg and/or diastolic \> 110 mm Hg) or clinically significant (ie, active) cardiovascular disease, cerebrovascular accident/stroke, or myocardial infarction within 6 months prior to first study medication; unstable angina; congestive heart failure of New York Heart Association grade 2 or higher; or serious cardiac arrhythmia requiring medication. Subjects with uncontrolled hypertension should be medically managed on a stable regimen to control hypertension prior to study entry. 7. Serious myocardial dysfunction defined by ECHO as absolute left ventricular ejection fraction (LVEF) 10% below the institution's lower limit of predicted normal. 8. Dyspnea at rest due to complications of advanced malignancy or other disease requiring continuous oxygen therapy. 9. Positive results of screening test for human immunodeficiency virus (HIV). 10. Current chronic daily treatment (continuous for \> 3 months) with systemic corticosteroids (dose equivalent to or greater than 10 mg/day methylprednisolone), excluding inhaled steroids. Short-term steroid use to prevent IV contrast allergic reaction or anaphylaxis in subjects who have known contrast allergies is allowed. 11. Known hypersensitivity to any component of the study medication(s). 12. Subjects taking any medication(s) (herbal or prescribed) known to have an adverse drug reaction with any of the study medications. 13. Concurrent or prior use of a strong cytochrome P450 (CYP)3A4 inhibitor (including ketoconazole, itraconazole, posaconazole, clarithromycin, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole, and grapefruit products) or strong CYP3A4 inducers (including phenytoin, carbamazepine, rifampin, rifabutin, rifapentin, phenobarbital, and St John's Wort) within 14 days before study day 1. 14. Concurrent or prior use of a strong CYP2C8 inhibitor (gemfibrozil) or moderate CYP2C8 inducer (rifampin) within 14 days before study day 1. 15. Participation in an investigational drug study or history of receiving any investigational treatment within 30 days prior to screening for this study, except for testosterone-lowering therapy in men with prostate cancer. 16. Assessed by the Investigator to be unable or unwilling to comply with the requirements of the protocol. 17. Concurrent participation in any interventional clinical trial. 18. Pregnant and nursing women.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-emergent Adverse Events (AEs) and Serious AEs (SAEs)30 days after last dose, up to 15.5 monthsGraded Using the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.03

Secondary

MeasureTime frameDescription
Objective Response Rate by RECIST Version 1.1Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression, up to 11 months.Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase by computed tomography (CT) or magnetic resonance imaging (MRI) of target and non-target lesions in accordance with RECIST Version 1.1. An objective response is defined as a confirmed complete or partial overall response with confirmation occurring at least 4 weeks after the initial response is observed.
Objective Response Rate by irRCTumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until confirmed disease progression, up to 11 months.Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase by computed tomography (CT) or magnetic resonance imaging (MRI) of target and non-target lesions in accordance with immune-related response criteria (irRC). An objective response is defined as a confirmed complete or partial overall response with confirmation occurring at least 4 weeks after the initial response is observed.
Progression Free Survival by RECIST Version 1.1.Tumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions PFS was evaluated using Kaplan-Meier methods. PFS was defined as the time from the date of first treatment to the date of disease progression or death (any cause) whichever occurs first. Subjects completing study follow-up or initiating a new anticancer therapy prior to documented PD was censored in the PFS analysis at the last known date the subject was progression free prior to completing follow-up or initiating the new therapy.
Progression Free Survival by irRCTumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.PFS was evaluated using Kaplan-Meier methods. PFS was defined as the time from the date of first treatment to the date of disease progression or death (any cause) whichever occurs first. Subjects completing study follow-up or initiating a new anticancer therapy prior to documented PD was censored in the PFS analysis at the last known date the subject was progression free prior to completing follow-up or initiating the new therapy.
Overall SurvivalParticipants were assessed from screening to death.OS was evaluated using Kaplan-Meier methods. OS was defined as the time from the date of first treatment to the date of death (any cause). Participants who were alive at the end of follow-up were censored in the OS analysis at the last known date alive.
Duration of Response (DOR) by RECIST Version 1.1 and irRCTumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.DOR was defined as the time from the date of first response (PR or CR) to the date of disease progression or death (any cause) whichever occurred first. Responding subjects completed study follow-up or initiated a new anticancer therapy prior to documented PD was censored in the DOR analysis at the last known date the subject was progression free prior completing follow-up or initiating the new therapy.
Disease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Up to 11 monthsDisease control is defined as subjects with a confirmed CR, PR, or SD lasting for at least 2 months
Quality of Life (QoL) by Patient Reported OutcomesUp to 15.5 monthsQoL was conducted via PROs using the Functional Assessment of Cancer Therapy - Head and Neck (FACT-H&N) or Functional Assessment of Cancer Therapy - Lung (FACT-L) questionnaire. The FACT-H&N and FACT-L compilation of general questions divided into five QoL subscales: Physical Well-Being, Social/Family Well-Being, Emotional Well-Being, Functional Well-Being, and Additional Concerns. It uses 5-point Likert-type response categories ranging from 0 = 'not at all' to 4 = 'very much'. Each subscale consists of 6-12 questions to answer.
Disease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCUp to 11 monthsDisease control is defined as subjects with a confirmed CR, PR, or SD lasting for at least 2 months

Countries

United States

Participant flow

Pre-assignment details

Only the Phase 1b portion of the study enrolled participants. The study was terminated early, so no participants were enrolled on the Phase 2 portion of the study. Eligible participants could have gone through both induction and maintenance treatment on study.

Participants by arm

ArmCount
NANT Squamous Cell Carcinoma (SCC) Vaccine
Combination of agents will be administered in this study: Aldoxorubicin HCl, ETBX-011, ETBX-021, ETBX-051, ETBX-061, GI-4000, GI-6207, GI-6301, haNK, N-803, avelumab, bevacizumab, capecitabine, cetuximab, cisplatin, cyclophosphamide, fluorouracil, leucovorin, nab-paclitaxel, necitumumab, SBRT.
4
Total4

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyOther1
Overall StudyProgressive Disease3

Baseline characteristics

CharacteristicNANT Squamous Cell Carcinoma (SCC) Vaccine
Age, Continuous63.5 years
STANDARD_DEVIATION 10.91
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
3 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
4 Participants
Subjects with SCC who have progressed4 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
4 / 4
other
Total, other adverse events
4 / 4
serious
Total, serious adverse events
2 / 4

Outcome results

Primary

Number of Participants With Treatment-emergent Adverse Events (AEs) and Serious AEs (SAEs)

Graded Using the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) Version 4.03

Time frame: 30 days after last dose, up to 15.5 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineNumber of Participants With Treatment-emergent Adverse Events (AEs) and Serious AEs (SAEs)4 Participants
Secondary

Disease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRC

Disease control is defined as subjects with a confirmed CR, PR, or SD lasting for at least 2 months

Time frame: Up to 11 months

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCirSD2 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCConfirmed irCR0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCConfirmed irPR0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCUnconfirmed irCR0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCUnconfirmed irPR1 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCUnconfirmed irPD0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCConfirmed irPD0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by irRCImaging not available to evaluate1 Participants
Secondary

Disease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1

Disease control is defined as subjects with a confirmed CR, PR, or SD lasting for at least 2 months

Time frame: Up to 11 months

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Confirmed Complete Response0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Confirmed Partial Response0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Unconfirmed Complete Response0 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Unconfirmed Partial Response1 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Stable Disease1 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Progressive Disease1 Participants
NANT Squamous Cell Carcinoma (SCC) VaccineDisease Control Rate (Confirmed Complete Response, Partial Response, or Stable Disease Lasting for at Least 2 Months) by RECIST Version 1.1Imaging Not Available to Evaluate1 Participants
Secondary

Duration of Response (DOR) by RECIST Version 1.1 and irRC

DOR was defined as the time from the date of first response (PR or CR) to the date of disease progression or death (any cause) whichever occurred first. Responding subjects completed study follow-up or initiated a new anticancer therapy prior to documented PD was censored in the DOR analysis at the last known date the subject was progression free prior completing follow-up or initiating the new therapy.

Time frame: Tumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.

Population: There were no participants with confirmed CR or PR. Therefore, no participants were included in the DOR analysis.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineDuration of Response (DOR) by RECIST Version 1.1 and irRC0 Participants
Secondary

Objective Response Rate by irRC

Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase by computed tomography (CT) or magnetic resonance imaging (MRI) of target and non-target lesions in accordance with immune-related response criteria (irRC). An objective response is defined as a confirmed complete or partial overall response with confirmation occurring at least 4 weeks after the initial response is observed.

Time frame: Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until confirmed disease progression, up to 11 months.

Population: No participants had either confirmed partial response or complete response on study. Therefore, objective response rate is 0.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineObjective Response Rate by irRC0 Participants
Secondary

Objective Response Rate by RECIST Version 1.1

Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase by computed tomography (CT) or magnetic resonance imaging (MRI) of target and non-target lesions in accordance with RECIST Version 1.1. An objective response is defined as a confirmed complete or partial overall response with confirmation occurring at least 4 weeks after the initial response is observed.

Time frame: Tumors were assessed at screening, and tumor response will be assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression, up to 11 months.

Population: No participants had either confirmed partial response or complete response on study. Therefore, objective response rate is 0.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
NANT Squamous Cell Carcinoma (SCC) VaccineObjective Response Rate by RECIST Version 1.10 Participants
Secondary

Overall Survival

OS was evaluated using Kaplan-Meier methods. OS was defined as the time from the date of first treatment to the date of death (any cause). Participants who were alive at the end of follow-up were censored in the OS analysis at the last known date alive.

Time frame: Participants were assessed from screening to death.

ArmMeasureValue (MEDIAN)
NANT Squamous Cell Carcinoma (SCC) VaccineOverall Survival15.1 Months
Secondary

Progression Free Survival by irRC

PFS was evaluated using Kaplan-Meier methods. PFS was defined as the time from the date of first treatment to the date of disease progression or death (any cause) whichever occurs first. Subjects completing study follow-up or initiating a new anticancer therapy prior to documented PD was censored in the PFS analysis at the last known date the subject was progression free prior to completing follow-up or initiating the new therapy.

Time frame: Tumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.

ArmMeasureValue (MEDIAN)
NANT Squamous Cell Carcinoma (SCC) VaccineProgression Free Survival by irRC5.7 Months
Secondary

Progression Free Survival by RECIST Version 1.1.

Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions PFS was evaluated using Kaplan-Meier methods. PFS was defined as the time from the date of first treatment to the date of disease progression or death (any cause) whichever occurs first. Subjects completing study follow-up or initiating a new anticancer therapy prior to documented PD was censored in the PFS analysis at the last known date the subject was progression free prior to completing follow-up or initiating the new therapy.

Time frame: Tumors were assessed at screening, and tumor response was assessed every 8 weeks during the induction phase, and every 12 weeks during the maintenance phase until disease progression or death (any cause) whichever occurred first, up to 11 months.

ArmMeasureValue (MEDIAN)
NANT Squamous Cell Carcinoma (SCC) VaccineProgression Free Survival by RECIST Version 1.1.5.3 Months
Secondary

Quality of Life (QoL) by Patient Reported Outcomes

QoL was conducted via PROs using the Functional Assessment of Cancer Therapy - Head and Neck (FACT-H&N) or Functional Assessment of Cancer Therapy - Lung (FACT-L) questionnaire. The FACT-H&N and FACT-L compilation of general questions divided into five QoL subscales: Physical Well-Being, Social/Family Well-Being, Emotional Well-Being, Functional Well-Being, and Additional Concerns. It uses 5-point Likert-type response categories ranging from 0 = 'not at all' to 4 = 'very much'. Each subscale consists of 6-12 questions to answer.

Time frame: Up to 15.5 months

Population: There were 2 QOLs planned on study, FACT-L/FACT-H\&N. No participants took the FACT-L. There is no data to summarize. The FACT H\&N was performed during the study for 1 participant. The only other participant who took the FACT-H\&N performed this QOL at screening only. There is no QOL data to summarize.~According to the approved SAP, FACT-H\&N/FACT-L scores at baseline and post-baseline time points were to be presented in a data listing. The results of the PRO were not planned to be summarized.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026