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IP ALT-803 Followed by SQ ALT-803 for Ovarian Cancer

QUILT-2.021: Randomized Study of Single Course of Intraperitoneal (IP) ALT-803 Followed by Subcutaneous (SQ) Maintenance ALT-803 Versus Subcutaneous (SQ) Maintenance ALT-803 Only After 1st Line Chemotherapy for Advanced Ovarian, Fallopian Tube, and Primary Peritoneal Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03054909
Enrollment
7
Registered
2017-02-16
Start date
2017-09-19
Completion date
2022-02-16
Last updated
2023-10-13

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

Conditions

FIGO Stage III and IV Fallopian Tube Cancer, FIGO Stage III and IV Ovarian Cancer, FIGO Stage III Primary Peritoneal Cancer

Brief summary

This is a single center, randomized phase II study of an IL-15Rα-Fc super-agonist complex (ALT-803) given as maintenance therapy after the completion of 1st line IV/IP chemotherapy for the treatment of advanced ovarian, fallopian tube, and primary peritoneal cancer.

Detailed description

In this study all patients receive four 8 week cycles of ALT-803 consisting of 4 weekly doses followed by a 4 week rest (no treatment). As it is not known how intraperitoneal (IP) administration (a route of drug administration frequently used for gynecologic cancers) of ALT-803 compares to subcutaneous (SQ) administration, both routes of administration will be tested. The primary objective of this trial is to select one method of delivery for further testing.

Interventions

BIOLOGICALALT-803 Subcutaneous

Patient receives ALT-803 10 mcg/kg subcutaneous weekly x 4 followed by 4 weeks of no treatment before continuing with treatment courses 2, 3, and 4. Treatment courses 2, 3, and 4 are identical for all patients - ALT-803 10 mcg/kg subcutaneous weekly x 4 with a 4 week rest (4 weeks on/4 weeks off)

BIOLOGICALALT-803 Intraperitoneal

Patient receives ALT-803 10 mcg/kg intraperitoneal weekly x 4 weeks followed by 4 weeks of no treatment before continuing with treatment courses 2, 3, and 4. Treatment courses 2, 3, and 4 are identical for all patients - ALT-803 10 mcg/kg subcutaneous weekly x 4 with a 4 week rest (4 weeks on/4 weeks off).

Sponsors

Masonic Cancer Center, University of Minnesota
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Diagnosis of FIGO stage III or grade IV epithelial ovarian, fallopian tube or primary peritoneal carcinoma, has received at least 3 cycles of first line IV/IP cisplatin and paclitaxel chemotherapy and has stable disease or better - refer to Appendix II for FIGO staging system (Note: to be eligible for this study, the patient must receive a minimum of 3 cycles of IP therapy; however, patients may continue on IV only 1st line therapy for additional cycles as long as inclusion criteria 4.1.2 is met) * Able to begin study therapy within 3 months of final dose of first line chemotherapy * Functioning intraperitoneal catheter * ≥ 18 years of age * GOG performance status ≤ 2 (Appendix II) * Adequate organ function within 14 days of enrollment defined as: * Hematology: hemoglobin ≥ 8 g/dl, absolute neutrophil count (ANC) ≥ 1500/ul, platelets ≥ 50 x 109/L * Creatinine: ≤ 2.0 mg/dL * Hepatic: SGOT and SGPT ≤ 3 x upper limit of institutional normal (ULN) * Ability to be off prednisone and other immunosuppressive drugs for at least 3 days prior to and while receiving ALT-803 * Voluntary written consent prior to the performance of any research related procedures

Exclusion criteria

* Received any investigational agent within the 14 days before the start of ALT-803 * Class II or greater New York Heart Association Functional Classification criteria (Appendix II) or serious cardiac arrhythmias likely to increase the risk of cardiac complications of cytokine therapy (e.g. ventricular tachycardia, frequent ventricular ectopy, or supraventricular tachyarrhythmia requiring chronic therapy) * Marked baseline prolongation of QT/QTc interval (e.g. demonstration of a QTc interval greater than 500 milliseconds) * Uncontrolled bacterial, fungal or viral infections including HIV-1/2 or active hepatitis C/B - chronic asymptomatic viral hepatitis is allowed * Active autoimmune disease requiring systemic immunosuppressive therapy * History of severe asthma and currently on chronic systemic medications (mild asthma requiring inhaled steroids only is eligible) * Uncontrolled hypertension: defined as ≥2 readings over 160 mmHg systolic or 110 mmHg diastolic within month prior to enrollment despite optimal anti-hypertensive medication. Patients with high readings which improve to ≤160/110 after adjustment of medications will be eligible. * History of pulmonary disease or abnormal pulmonary function studies * History of narcolepsy or any neurological condition which may impair consciousness

Design outcomes

Primary

MeasureTime frameDescription
Progression Free Survival6 monthsIncidence of Progression Free Survival after first treatment of ALT-803.

Secondary

MeasureTime frameDescription
Progression Free Survival1 yearIncidence of Progression Free Survival after first treatment of ALT-803.. Survival probability estimate.
Overall Survival1 yearOverall Survival from start of ALT-803 dosing
ALT-803 Associated Toxicities1 yearIncidence of ALT-803 associated toxicities after first treatment of ALT-803.
Incidence of Recorded Toxicity Grade 3 or Greater1 yearGrade 3 adverse events or greater will be measured. A Grade 3 adverse event is defined as severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm 1: ALT-803 Subcutaneous Only
ALT-803 Subcutaneous: Patient receives ALT-803 10 mcg/kg subcutaneous weekly x 4 followed by 4 weeks of no treatment before continuing with treatment courses 2, 3, and 4. Treatment courses 2, 3, and 4 are identical for all patients - ALT-803 10 mcg/kg subcutaneous weekly x 4 with a 4 week rest (4 weeks on/4 weeks off)
3
Arm 2: ALT-803 Intraperitoneal and Subcutaneous
ALT-803 Intraperitoneal: Patient receives ALT-803 10 mcg/kg intraperitoneal weekly x 4 weeks followed by 4 weeks of no treatment before continuing with treatment courses 2, 3, and 4. Treatment courses 2, 3, and 4 are identical for all patients - ALT-803 10 mcg/kg subcutaneous weekly x 4 with a 4 week rest (4 weeks on/4 weeks off).
4
Total7

Baseline characteristics

CharacteristicArm 1: ALT-803 Subcutaneous OnlyArm 2: ALT-803 Intraperitoneal and SubcutaneousTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants1 Participants1 Participants
Age, Categorical
Between 18 and 65 years
3 Participants3 Participants6 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
3 Participants4 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants4 Participants6 Participants
Region of Enrollment
United States
3 participants4 participants7 participants
Sex: Female, Male
Female
3 Participants4 Participants7 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 30 / 4
other
Total, other adverse events
3 / 34 / 4
serious
Total, serious adverse events
1 / 30 / 4

Outcome results

Primary

Progression Free Survival

Incidence of Progression Free Survival after first treatment of ALT-803.

Time frame: 6 months

Population: survival probability estimate

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyProgression Free Survival50 Percentage of PFS
Arm 2: ALT-803 Intraperitoneal and SubcutaneousProgression Free Survival100 Percentage of PFS
Secondary

ALT-803 Associated Toxicities

Incidence of ALT-803 associated toxicities after first treatment of ALT-803.

Time frame: 1 year

Population: Count of events

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyALT-803 Associated Toxicities65 Count of events
Arm 2: ALT-803 Intraperitoneal and SubcutaneousALT-803 Associated Toxicities100 Count of events
Secondary

Incidence of Recorded Toxicity Grade 3 or Greater

Grade 3 adverse events or greater will be measured. A Grade 3 adverse event is defined as severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling.

Time frame: 1 year

Population: Count of events

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyIncidence of Recorded Toxicity Grade 3 or Greater1 Number of of adverse events
Arm 2: ALT-803 Intraperitoneal and SubcutaneousIncidence of Recorded Toxicity Grade 3 or Greater2 Number of of adverse events
Secondary

Overall Survival

Overall Survival from start of ALT-803 dosing

Time frame: 1 year

Population: survival probability estimate

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyOverall Survival100 Percentage of participants
Arm 2: ALT-803 Intraperitoneal and SubcutaneousOverall Survival100 Percentage of participants
Secondary

Overall Survival

Overall Survival after first treatment of ALT-803.

Time frame: 2 year

Population: Survival probability estimate

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyOverall Survival100 Percentage of participants
Arm 2: ALT-803 Intraperitoneal and SubcutaneousOverall Survival100 Percentage of participants
Secondary

Progression Free Survival

Incidence of Progression Free Survival after first treatment of ALT-803.. Survival probability estimate.

Time frame: 1 year

Population: survival probability estimate

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyProgression Free Survival50 Percentage of participants
Arm 2: ALT-803 Intraperitoneal and SubcutaneousProgression Free Survival100 Percentage of participants
Secondary

Progression Free Survival

Incidence of Progression Free Survival after first treatment of ALT-803.. Survival probability estimate.

Time frame: 2 years

Population: survival probability estimate

ArmMeasureValue (NUMBER)
Arm 1: ALT-803 Subcutaneous OnlyProgression Free Survival50 Percentage of PFS
Arm 2: ALT-803 Intraperitoneal and SubcutaneousProgression Free Survival100 Percentage of PFS

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