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A Phase 1 Study of the Clinical and Immunologic Effects of ALT-803 in Patients With Advanced Solid Tumors

A Phase 1 Study of the Clinical and Immunologic Effects of ALT-803, a Novel Recombinant IL-15 Complex in Patients With Advanced Solid Tumors: Melanoma, Renal Cell, Non-Small Cell Lung and Squamous Cell Head and Neck Cancer

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01946789
Enrollment
26
Registered
2013-09-20
Start date
2014-05-31
Completion date
2017-12-31
Last updated
2025-01-22

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

Conditions

Advanced Solid Tumors

Keywords

cancer, IL-15, melanoma, metastatic, unresectable, solid tumors, renal cell, non-small cell lung, squamous cell head and neck

Brief summary

The proposed clinical trial is a phase I, open-label, multi-center, dose-escalation study of ALT-803 in patients with surgically incurable advanced solid tumors: melanoma, renal cell, non-small cell lung and squamous cell head and neck cancer

Detailed description

This trial will investigate the safety and immunogenicity, immunomodulatory properties, and clinical benefits of treatment with weekly doses of ALT-803 in patients with advanced solid tumors.

Interventions

BIOLOGICALALT-803

N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Altor BioScience
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

ENTRY CRITERIA: DISEASE CHARACTERISTICS: * Histological or cytological confirmed malignancy in the following disease groups: melanoma that is metastatic or unresectable, non-small cell lung carcinoma, renal cell carcinoma or squamous cell head and neck carcinoma, for which standard curative or palliative measures do not exist or are no longer effective. * Primary site may be cutaneous or unknown, but mucosal and ocular primaries are excluded. * Patients with non-small lung cancer must have had prior EGFR and ALK testing. Patients with sensitizing mutations in EGFR or ALK rearrangements should have been treated with prior targeted agents and have had progression or discontinued due to toxicity from these agents. * No patients with known brain metastases. PRIOR/CONCURRENT THERAPY: * At least one prior therapy using an agent with the potential for prolonged remission. * Patients with BRAF v600 mutation should be excluded or may be included after experiencing progression following treatment with BRAF inhibitor regimen or if they consent to forgo FDA-approved therapies that increase median survival. * At least 4 weeks from last dose of prior chemotherapy or immunomodulator therapy with full recovery of acute toxicities. For patients coming off molecularly-targeted therapy, at least 2 weeks since last dose and recovery from laboratory and constitutional toxicities. * At least 2 weeks from completion of prior radiation therapy with full recovery from toxicities. * At least 4 weeks from last dose of prior investigational therapy with recovery to meet baseline eligibility criteria. * Not receiving any current anticancer therapy * No patients who have had chemotherapy, targeted therapy, or radiotherapy and have not recovered from acute toxicity to their pretreatment baseline or to a grade 1 level within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study. For resolution of autoimmune toxicity from prior immune therapy, patients must be off steroids for at least 30 days without relapse of autoimmune toxicity, or it must be at least 30 days from their last dose of infliximab or related immunosuppressive therapy without relapse of autoimmune toxicity. * No patients who are receiving any other investigational agents. * No patients who are receiving chronic systemic or regular inhaled corticosteroid use within 7 days prior to initiation of protocol therapy. * No immunosuppressive therapy within 30 days prior to treatment start. PATIENT CHARACTERISTICS * Age \>18 years * Both men and women of all races and ethnic groups are eligible. Performance Status * ECOG performance status ≤1 * Life expectancy of greater than 6 months. Bone Marrow Function * leukocytes ≥3,000/mcL * absolute lymphocyte count ≥500/mcL * absolute neutrophil count ≥1,000/mcL (without hematopoietic growth factors) * platelets ≥100,000/mcL (without transfusion) * hemoglobin ≥ 10 gm/dL (may be transfused but must be stable without clinical evidence of ongoing blood loss or hemolysis) Hepatic Function * total bilirubin within normal institutional limits * AST(SGOT)/ALT(SGPT) ≤2.5 × institutional upper limit of normal Kidney Function * Creatinine within normal institutional limits OR * Creatinine clearance ≥60 mL/min/1.73 m2 for patients with creatinine levels above institutional normal. Pulmonary Function • No history of severe COPD or emphysema or interstitial lung disease currently on home supplemental oxygen. Patients with NSCLC with stable COPD or emphysema not requiring supplemental oxygen are eligible. Cardiac Function * No symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia. Patients who have underlying risk factors for cardiac disease should be excluded or undergo clearance stress-based cardiac function testing. The pre-treatment QTc must be \<500 msec. * No class II or greater congestive heart failure as described in the New York Heart Association Functional Classification criteria or serious arrhythmias likely to increase the risk of cardiac complications of cytokine therapy. Other * Women of child-bearing potential and men must agree to use adequate contraception. * Ability to understand and the willingness to sign a written informed consent document. * No uncontrolled inter-current illness or psychiatric illness/social situations that would limit compliance with study requirements. * No pregnant women. * No HIV-positive patients. * No positive hepatitis C serology or active hepatitis B infection. * No active bacterial or fungal infection. * No inability to home monitor blood pressure. * Patients with thyroid disease should be excluded unless euthyroid on suppressive or replacement therapy.

Design outcomes

Primary

MeasureTime frameDescription
Dose Limiting Toxicity9 monthsThe safety endpoint is the MTD of ALT-803, defined as the dose level below that at which ≥2 of 6 patients experience a DLT.

Secondary

MeasureTime frameDescription
To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)24 hours post dosePharmacokinetics of ALT-803 assessed by ELISA
To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)24 hours after first dosePharmacokinetics of ALT-803 assessed by ELISA
Number of Participants Who Developed Anti-drug Antibodies to ALT-80314 days post final dose, up to 135 daysImmunogenicity of ALT-803 assessed by ELISA
To Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)Cycle 1 Week 1, pre-dose; Cycle 1 Week 1, 30 minutes post dose; Cycle 1 Week 1, 2 hours post dose; Cycle 1 Week 1, 4 hours post dose; Cycle 1 Week 1, 8 hours post dose; Cycle 1 Week 1, 24 hours post doseThe level of immune response to autochthonous viral and tumor antigens by interferon gamma (IFN-γ) ELISPOT
Objective Response RateUp to 6 monthsNumber of patients with CR, PR, SD, and PD
To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)24 hours after first dosePharmacokinetics of ALT-803 assessed by ELISA

Countries

United States

Participant flow

Participants by arm

ArmCount
N-803 IV 0.3/0.5 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
2
N-803 IV 1.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 IV 3.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 IV 6.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 Subcutaneous 6.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 Subcutaneous 10.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 Subcutaneous 15.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
4
N-803 Subcutaneous 20.0 ug/kg
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
3
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg Subcutaneous
ALT-803: N-803 will be administered at the following doses intravenously: 0.3/0.5, 1.0, 3.0, 6.0 ug/kg N-803 will be administered at the following does subcutaneously: 6.0, 10.0, 15.0, 20.0 ug/kg N-803 will be administered intratumorally at a dose of 10.0 ug/kg, followed by N-803 administered subcutaneously at a dose of 15.0 ug/kg. Each treatment cycle consists of 4 weeks on therapy and 2 weeks off. Patients will receive weekly dose of ALT-803 for 4 weeks (Days 1, 8, 15, and 22) used for the identification of the OBD and MTD. After a 2-week rest period (Weeks 5 and 6) and recovery of any dose limiting toxicities to grade 0-1 of Cycle 1, a second 6-week cycle (4 weeks on treatment and 2 weeks off) can begin. After a rest period during Weeks 5 and 6 of Cycle 2, stable or benefitting patients assessed at week 8 +/- 1 may receive up to 2 additional 6-week cycles.
2
Total26

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007FG008
Overall StudyDeath021111312
Overall StudyProgressive Disease001002000
Overall StudyWithdrawal by Subject000210100

Baseline characteristics

CharacteristicN-803 IV 0.3/0.5 ug/kgTotalN-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousN-803 Subcutaneous 20.0 ug/kgN-803 Subcutaneous 15.0 ug/kgN-803 Subcutaneous 10.0 ug/kgN-803 Subcutaneous 6.0 ug/kgN-803 IV 6.0 ug/kgN-803 IV 3.0 ug/kgN-803 IV 1.0 ug/kg
Advanced Solid Tumors2 Participants26 Participants2 Participants3 Participants4 Participants3 Participants3 Participants3 Participants3 Participants3 Participants
Age, Continuous38.0 years
STANDARD_DEVIATION 15.56
59.9 years
STANDARD_DEVIATION 11.2
64.0 years
STANDARD_DEVIATION 19.8
55.3 years
STANDARD_DEVIATION 10.97
63.3 years
STANDARD_DEVIATION 9.88
59.0 years
STANDARD_DEVIATION 3.46
59.3 years
STANDARD_DEVIATION 5.13
69.7 years
STANDARD_DEVIATION 8.02
58.7 years
STANDARD_DEVIATION 10.26
64.7 years
STANDARD_DEVIATION 6.81
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants2 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants24 Participants2 Participants3 Participants4 Participants2 Participants3 Participants2 Participants3 Participants3 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants0 Participants0 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants23 Participants2 Participants3 Participants3 Participants2 Participants3 Participants3 Participants3 Participants2 Participants
Sex: Female, Male
Female
2 Participants11 Participants0 Participants1 Participants3 Participants1 Participants1 Participants1 Participants2 Participants0 Participants
Sex: Female, Male
Male
0 Participants15 Participants2 Participants2 Participants1 Participants2 Participants2 Participants2 Participants1 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
deaths
Total, all-cause mortality
0 / 22 / 31 / 31 / 31 / 31 / 33 / 41 / 32 / 2
other
Total, other adverse events
2 / 23 / 33 / 33 / 33 / 33 / 34 / 43 / 32 / 2
serious
Total, serious adverse events
0 / 21 / 31 / 31 / 30 / 31 / 32 / 42 / 30 / 2

Outcome results

Primary

Dose Limiting Toxicity

The safety endpoint is the MTD of ALT-803, defined as the dose level below that at which ≥2 of 6 patients experience a DLT.

Time frame: 9 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
N-803 IV 0.3/0.5 ug/kgDose Limiting Toxicity0 Participants
N-803 IV 1.0 ug/kgDose Limiting Toxicity0 Participants
N-803 IV 3.0 ug/kgDose Limiting Toxicity0 Participants
N-803 IV 6.0 ug/kgDose Limiting Toxicity0 Participants
N-803 Subcutaneous 6.0 ug/kgDose Limiting Toxicity0 Participants
N-803 Subcutaneous 10.0 ug/kgDose Limiting Toxicity0 Participants
N-803 Subcutaneous 15.0 ug/kgDose Limiting Toxicity1 Participants
N-803 Subcutaneous 20.0 ug/kgDose Limiting Toxicity0 Participants
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousDose Limiting Toxicity0 Participants
Secondary

Number of Participants Who Developed Anti-drug Antibodies to ALT-803

Immunogenicity of ALT-803 assessed by ELISA

Time frame: 14 days post final dose, up to 135 days

Population: There were 2 participants in the N-803 IV 6.0 ug/kg, 1 participant in the N-803 Subcutaneous (SC) 6.0 ug/kg, and 1 participant in the N-803 Subcutaneous 20.0 ug/kg cohorts that had samples not collected. There were 2 subjects from the 6.0 ug/kg SC cohort whose samples were provided to the NantCell analytical laboratory and analyzed, but original assay reports could not be located and thus results cannot be reported.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
N-803 IV 0.3/0.5 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 IV 1.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 IV 3.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 IV 6.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 Subcutaneous 6.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 Subcutaneous 10.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 Subcutaneous 15.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 Subcutaneous 20.0 ug/kgNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousNumber of Participants Who Developed Anti-drug Antibodies to ALT-8030 Participants
Secondary

Objective Response Rate

Number of patients with CR, PR, SD, and PD

Time frame: Up to 6 months

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
N-803 IV 0.3/0.5 ug/kgObjective Response RateStable disease2 Participants
N-803 IV 0.3/0.5 ug/kgObjective Response RateProgressive disease0 Participants
N-803 IV 1.0 ug/kgObjective Response RateStable disease1 Participants
N-803 IV 1.0 ug/kgObjective Response RateProgressive disease2 Participants
N-803 IV 3.0 ug/kgObjective Response RateStable disease2 Participants
N-803 IV 3.0 ug/kgObjective Response RateProgressive disease1 Participants
N-803 IV 6.0 ug/kgObjective Response RateStable disease0 Participants
N-803 IV 6.0 ug/kgObjective Response RateProgressive disease3 Participants
N-803 Subcutaneous 6.0 ug/kgObjective Response RateStable disease2 Participants
N-803 Subcutaneous 6.0 ug/kgObjective Response RateProgressive disease0 Participants
N-803 Subcutaneous 10.0 ug/kgObjective Response RateProgressive disease3 Participants
N-803 Subcutaneous 10.0 ug/kgObjective Response RateStable disease0 Participants
N-803 Subcutaneous 15.0 ug/kgObjective Response RateProgressive disease1 Participants
N-803 Subcutaneous 15.0 ug/kgObjective Response RateStable disease3 Participants
N-803 Subcutaneous 20.0 ug/kgObjective Response RateStable disease0 Participants
N-803 Subcutaneous 20.0 ug/kgObjective Response RateProgressive disease2 Participants
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousObjective Response RateStable disease1 Participants
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousObjective Response RateProgressive disease1 Participants
Secondary

To Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)

The level of immune response to autochthonous viral and tumor antigens by interferon gamma (IFN-γ) ELISPOT

Time frame: Cycle 1 Week 1, pre-dose; Cycle 1 Week 1, 30 minutes post dose; Cycle 1 Week 1, 2 hours post dose; Cycle 1 Week 1, 4 hours post dose; Cycle 1 Week 1, 8 hours post dose; Cycle 1 Week 1, 24 hours post dose

ArmMeasureGroupValue (MEAN)Dispersion
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose0 pg/mLStandard Deviation 0
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose0 pg/mLStandard Deviation 0
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose2.7 pg/mLStandard Deviation 0.5037
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose21.827 pg/mLStandard Deviation 25.6506
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose10.022 pg/mLStandard Deviation 14.1731
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose64.947 pg/mLStandard Deviation 85.0197
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose3.433 pg/mLStandard Deviation 4.8551
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose0.728 pg/mLStandard Deviation 1.0292
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose22.585 pg/mLStandard Deviation 2.9941
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose47.160 pg/mLStandard Deviation 37.1485
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose11.158 pg/mLStandard Deviation 4.7186
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose1.528 pg/mLStandard Deviation 2.1609
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose15.3 pg/mLStandard Deviation 9.8995
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose0.73 pg/mLStandard Deviation 1.0324
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose1.420 pg/mLStandard Deviation 2.0082
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose57.660 pg/mLStandard Deviation 56.4978
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose30.605 pg/mLStandard Deviation 36.7908
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose2.015 pg/mLStandard Deviation 2.8496
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose10.198 pg/mLStandard Deviation 13.8527
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose0 pg/mLStandard Deviation 0
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose0 pg/mLStandard Deviation 0
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose23.295 pg/mLStandard Deviation 28.1061
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose0 pg/mLStandard Deviation 0
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose7.597 pg/mLStandard Deviation 9.5858
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose0.326 pg/mLStandard Deviation 0.3833
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose0.163 pg/mLStandard Deviation 0.2829
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose0.84 pg/mLStandard Deviation 0.7962
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose0 pg/mLStandard Deviation 0
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose1.146 pg/mLStandard Deviation 1.7892
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose0 pg/mLStandard Deviation 0
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose3.825 pg/mLStandard Deviation 0.5214
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose2.741 pg/mLStandard Deviation 2.3792
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose0.692 pg/mLStandard Deviation 1.1994
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose1.525 pg/mLStandard Deviation 1.3373
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose1.771 pg/mLStandard Deviation 2.2307
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose2.123 pg/mLStandard Deviation 1.1098
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose2.659 pg/mLStandard Deviation 4.6059
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose0.607 pg/mLStandard Deviation 1.0506
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose2.659 pg/mLStandard Deviation 4.6059
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose0 pg/mLStandard Deviation 0
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose2.479 pg/mLStandard Deviation 4.2939
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose4.389 pg/mLStandard Deviation 7.6013
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose1.394 pg/mLStandard Deviation 2.4152
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose1.664 pg/mLStandard Deviation 2.8823
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose1.598 pg/mLStandard Deviation 2.7676
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose1.463 pg/mLStandard Deviation 2.5342
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose4.445 pg/mLStandard Deviation 7.6987
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose1.325 pg/mLStandard Deviation 2.2943
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 4 hr post dose78.729 pg/mLStandard Deviation 63.094
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 8 hr post dose22.293 pg/mLStandard Deviation 11.2426
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 2 hr post dose43.863 pg/mLStandard Deviation 42.2211
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 30min post dose2.397 pg/mLStandard Deviation 3.3896
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 24 hr post dose4.078 pg/mLStandard Deviation 5.7676
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Interferon Gamma (IFN-γ)C1, W1 pre dose5.955 pg/mLStandard Deviation 0.5356
Secondary

To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)

Pharmacokinetics of ALT-803 assessed by ELISA

Time frame: 24 hours after first dose

Population: Results not available for each participant at each parameter because results were below the level of detection.

ArmMeasureGroupValue (MEAN)
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-24236 hr*ng/mL
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinity236 hr*ng/mL
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t236 hr*ng/mL
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-2414.7 hr*ng/mL
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t14.7 hr*ng/mL
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinity15.0 hr*ng/mL
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-24145 hr*ng/mL
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t105 hr*ng/mL
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinity145 hr*ng/mL
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinity290 hr*ng/mL
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t289 hr*ng/mL
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-24290 hr*ng/mL
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-242.73 hr*ng/mL
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t4.66 hr*ng/mL
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinityNA hr*ng/mL
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-244.86 hr*ng/mL
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t5.19 hr*ng/mL
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinityNA hr*ng/mL
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t10.9 hr*ng/mL
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinityNA hr*ng/mL
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-2410.9 hr*ng/mL
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-244.56 hr*ng/mL
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t4.57 hr*ng/mL
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinityNA hr*ng/mL
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-24323 hr*ng/mL
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-t323 hr*ng/mL
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinity324 hr*ng/mL
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC 0-tNA hr*ng/mL
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-infinityNA hr*ng/mL
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (AUC 0-t, AUC0-24, AUC0-infinity)AUC0-24NA hr*ng/mL
Secondary

To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)

Pharmacokinetics of ALT-803 assessed by ELISA

Time frame: 24 hours after first dose

Population: To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax). Results not available for each participant at each parameter because insufficient measurable concentration data.

ArmMeasureValue (MEAN)
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)91.2 ng/mL
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)11.5 ng/mL
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)49.8 ng/mL
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)86.0 ng/mL
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)0.276 ng/mL
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)0.352 ng/mL
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)0.685 ng/mL
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)0.280 ng/mL
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)72.6 ng/mL
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Cmax)2.26 ng/mL
Secondary

To Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)

Pharmacokinetics of ALT-803 assessed by ELISA

Time frame: 24 hours post dose

Population: Results not available for each participant at each parameter because results were below the level of detection

ArmMeasureGroupValue (MEAN)
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half life2.23 hours
N-803 IV 0.3/0.5 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.583 hours
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half life4.58 hours
N-803 IV 1.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.542 hours
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half life2.53 hours
N-803 IV 3.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.667 hours
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half life1.41 hours
N-803 IV 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.650 hours
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax6.06 hours
N-803 Subcutaneous 6.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half lifeNA hours
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax24.0 hours
N-803 Subcutaneous 10.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half lifeNA hours
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax16.1 hours
N-803 Subcutaneous 15.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half lifeNA hours
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half lifeNA hours
N-803 Subcutaneous 20.0 ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax16.1 hours
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half life2.73 hours
N-803 Intratumoral 10.0 ug/kg Followed by N-803 15.0 ug/kg SubcutaneousTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.508 hours
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Half lifeNA hours
N-803 IV 0.5ug/kgTo Evaluate the Effect of Escalating Doses of ALT-803: Pharmacokinetics (Half Life and Tmax)Tmax0.500 hours

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