FT516 and IL2 With Enoblituzumab for Ovarian Cancer

NCT04630769 | Completed Phase 1 Results DMC FDA Drug

• 2 other identifiers: 2020LS001P01CA111412
• Study Type: interventional
• Target: 3
• Locations: 1 country
• Sites: 1

Brief Summary

This is a single center Phase I clinical trial of FT516 administered intraperitoneally (IP) once a week for 3 consecutive weeks for the treatment of recurrent gynecologic cancers. As this is an early 1st in human study and the 1st intraperitoneal infusion of FT516, the safety of FT516 is confirmed prior to adding enoblituzumab as an intravenous infusion approximately 1 week prior to the 1st dose of FT516 and every 3 weeks beginning on Day 22 (1 week after the last dose of FT516). Each dose of FT516 is followed directly by an IP infusion of interleukin-2 (IL-2) to facilitate natural killer (NK) cell survival. A short course of outpatient lymphodepletion chemotherapy is given prior to the 1st dose of FT516.

Conditions

Ovarian Cancer; Fallopian Tube Adenocarcinoma; Primary Peritoneal Cavity Cancer

Outcome Measures

Primary Outcomes (2)

• Number of Participants Experiencing Dose Limiting Toxicity (DLT) Events

  DLT is defined as any treatment emergent toxicity at least possibly related to the study treatment meeting one of the following criteria based on CTCAE v5 within 28 days (14 days for ascites) of the 1st FT516 infusion (for Cohort 4 and 5, DLT assessment starts with enoblituzumab and continues for 28 days after 1st FT516): Grade 3 organ toxicity (pulmonary, hepatic, renal, or neurologic) not pre-existing and lasting more than 72 hours , Any non-hematologic Grade 4 or 5 toxicity, Neutrophil count decreased ≥ Grade 4 that persists at Day 28 despite use of growth factor support ,Grade 3 abdominal pain lasting more than 4 consecutive days and not controlled by standard analgesics, Grade 3 or greater ascites within 14 days after FT516 administration in patients who had no ascites or Grade 1 ascites at enrollment and is not attributable to disease progression

  28 Days Post FT516 infusion

• Number of Participants Experiencing Adverse Events

  Number of participants experiencing adverse events related to FT516

  28 days after first dose of FT516 or 28 days after last dose of Enoblituzumab (arm 4 and 5 only)

Secondary Outcomes (4)

• Number of Participants Experiencing Progression Free Survival

  6 months from the first dose of FT516

• Number of Participants Experiencing Progression Free Survival

  1 year from the first dose of FT516

• Number of Participants Experiencing Overall Survival

  6 months from the first dose of FT516

• Number of Participants Experiencing Overall Survival

  1 year from the first dose of FT516

Study Arms (5)

Monotherapy: IP FT516 at 9 x 10^7 cells/dose on Day 1, 8, and 15

EXPERIMENTAL

Drug: IP FT516; Drug: IL-2

Monotherapy: IP FT516 at 3 x 10^8 cells/dose on Day 1, 8, and 15

EXPERIMENTAL

Drug: IP FT516; Drug: IL-2

Monotherapy: IP FT516 at 9 x 10^8 cells/dose on Day 1, 8, and 15

EXPERIMENTAL

Drug: IP FT516; Drug: IL-2

Safe dose (MTD-1) from 1st 3 levels + IV enoblituzumab on Day -6

EXPERIMENTAL

Drug: IP FT516; Drug: Enoblituzumab; Drug: IL-2

Highest dose (MTD) from 1st 3 levels + IV enoblituzumab on Day -6

EXPERIMENTAL

Drug: IP FT516; Drug: Enoblituzumab; Drug: IL-2

Interventions

IP FT516 DRUG

FT516 is an off-the-shelf cryopreserved NK cell product derived from an iPSC that was transduced with a high affinity, ADAM17 non-cleavable CD16 (Fc receptor) that maintains CD16 on the cell surface, which remains fully functional after NK cell activation

Highest dose (MTD) from 1st 3 levels + IV enoblituzumab on Day -6; Monotherapy: IP FT516 at 3 x 10^8 cells/dose on Day 1, 8, and 15; Monotherapy: IP FT516 at 9 x 10^7 cells/dose on Day 1, 8, and 15; Monotherapy: IP FT516 at 9 x 10^8 cells/dose on Day 1, 8, and 15; Safe dose (MTD-1) from 1st 3 levels + IV enoblituzumab on Day -6

Enoblituzumab DRUG

Enoblituzumab is an Fc-optimized monoclonal antibody that targets B7-H3 which is highly expressed on ovarian cancer. Enoblituzumab at 15 mg/kg IV, one day before lymphodepleting chemotherapy

Highest dose (MTD) from 1st 3 levels + IV enoblituzumab on Day -6; Safe dose (MTD-1) from 1st 3 levels + IV enoblituzumab on Day -6

IL-2 DRUG

IL-2 at 6 Million IU (3 Million IU/m2 if patient weight is \<45 kg) is administered IP in 50 cc of room temperature D5W via peritoneal catheter directly after the FT-516 infusion is completed. Immediately following the IL-2, an additional 100 cc D5W flush is infused into the peritoneal cavity through the peritoneal catheter as rapidly as possible.

Also known as: Interleukin-2

Highest dose (MTD) from 1st 3 levels + IV enoblituzumab on Day -6; Monotherapy: IP FT516 at 3 x 10^8 cells/dose on Day 1, 8, and 15; Monotherapy: IP FT516 at 9 x 10^7 cells/dose on Day 1, 8, and 15; Monotherapy: IP FT516 at 9 x 10^8 cells/dose on Day 1, 8, and 15; Safe dose (MTD-1) from 1st 3 levels + IV enoblituzumab on Day -6

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Recurrent epithelial ovarian cancer, fallopian tube, or primary peritoneal cancer meeting one of the following minimal prior treatment requirement (no limit to the maximum number of prior treatments):
• Platinum Resistant: may receive FT516 as 2nd line (as 1st salvage therapy) with platinum resistant is defined as disease that has responded to initial chemotherapy but demonstrates recurrence within a relatively short period of time (\< 6 months) following the completion of treatment.
• Platinum Sensitive: may receive FT516 as 3rd line therapy (as 2nd salvage therapy) with platinum sensitive is defined as the recurrence of active disease in a patient who has achieved a documented response to initial platinum-based treatment and has been off therapy for an extended period of time (≥ 6 months).
• Measurable disease per modified Response Evaluation Criteria in Solid Tumors, v1.1 within the abdomen and pelvis assess within 42 days of the 1st FT516 infusion. Extra-peritoneal disease is permitted; however each lesion must be \< 5 cm at the largest diameter.
• At least 18 years of age
• GOG Performance Status 0, 1, or 2
• Adequate organ function within 14 days of study registration (28 days for pulmonary and cardiac) defined as:
• Hematologic: platelets ≥ 75,000 x 10\^9/L and hemoglobin ≥ 9 g/dL, unsupported by transfusions; absolute neutrophil count (ANC) ≥ 1000 x 10\^9/L, unsupported by G-CSF or granulocytes
• Creatinine: Estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73m\^2 per current institutional calculation formula
• Hepatic: AST and ALT ≤ 3 x upper limit of institutional normal
• Pulmonary Function: Oxygen saturation ≥ 90% on room air; PFT's required only if symptomatic or prior known impairment - must have pulmonary function \>50% corrected DLCO and FEV1
• Cardiac Function: LVEF ≥ 40% by echocardiography, MUGA, or cardiac MRI; no clinically significant cardiovascular disease including any of the following: stroke or myocardial infarction within 6 months prior to first study treatment; unstable angina or congestive heart failure of New York Heart Association Grade 2 or higher
• Agrees to the placement of an intraperitoneal catheter before the 1st dose of study directed drug (chemotherapy or enoblituzumab - Cohort 4 and 5) and remains in place through Day 36 or longer if retreatment is planned
• Agrees to undergo a tumor biopsy if feasible at the time the catheter is placed and removed - Accessible tumor for biopsy is not required for eligibility.
• Washout period of at least 14 days after any standard of care tumor directed therapy prior to the first dose of investigational product (FT516 for Levels 1-3 or enoblituzumab for Levels 4-5)

You may not qualify if:

• Pregnant or breastfeeding or planning on becoming pregnant in the next 6 months. Woman of childbearing potential who still have a uterus and ovaries, must agree to use at effective contraception and must have a negative pregnancy test within 14 days of study enrollment.
• Any known condition that requires systemic immunosuppressive therapy (\> 5mg prednisone daily or equivalent) during the FT516 dosing period (3 days before the 1st dose through 14 days after the last dose) - topical and inhaled steroids are permitted.
• 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 bacterial, fungal or viral infections with progression of clinical symptoms despite therapy
• Receipt of any investigational agent within 28 days prior to the first dose of investigational product (FT516 for Levels 1-3 or enoblituzumab for Levels 4-5)
• Live vaccine \<6 weeks prior to start of lympho-conditioning
• Known allergy to the following FT516 components: albumin (human) or DMSO
• Any history of prior enoblituzumab administration
• Known history of HIV positivity or active hepatitis C or B - chronic asymptomatic viral hepatitis is allowed
• Presence of any medical or social issues that are likely to interfere with study conduct or may cause increased risk to patient

Sponsors & Collaborators

• Masonic Cancer Center, University of Minnesota: lead
• National Cancer Institute (NCI): collaborator

Study Sites (1)

University of Minnesota, Masonic Cancer Center

Minneapolis, Minnesota, 55455, United States

Location

MeSH Terms

Conditions

Ovarian Neoplasms

Interventions

Interleukin-2

Condition Hierarchy (Ancestors)

Endocrine Gland Neoplasms; Neoplasms by Site; Neoplasms; Ovarian Diseases; Adnexal Diseases; Genital Diseases, Female; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Genital Neoplasms, Female; Urogenital Neoplasms; Genital Diseases; Endocrine System Diseases; Gonadal Disorders

Intervention Hierarchy (Ancestors)

Interleukins; Cytokines; Intercellular Signaling Peptides and Proteins; Peptides; Amino Acids, Peptides, and Proteins; Lymphokines; Proteins; Biological Factors

Results Point of Contact

• Title: Melissa Geller, MD
• Organization: Masonic Cancer Center, University of Minnesota

gelle005@umn.edu

612-626-3111

Study Officials

• Melissa Geller, MD, MS

  Masonic Cancer Center, University of Minnesota

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SEQUENTIAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: This study is conducted in two consecutive stages with 5 cohorts. A minimum of 28 days must separate each cohort. Within a 3 patient cohort, a minimum of 14 days must separate the first and second patient. Stage 1 Step 1 uses a fast-track design (1 patient per cohort) with a minimum of 28 days between each patient until one of the following: a) 1st occurrence of a pre-defined adverse event at which point the study moves to Step 2. The cohort size increases from 1 to 3 patients with 2 additional patients added. Escalation in Step 2 continues until the 1st DLT at which point Stage 2 continual reassessment method (CRM) is activated. If Cohort 5 is completed with 10 patients enrolled at the MTD without a DLT, Stage 2 (CRM) is not used. b) The 1st occurrence of a DLT the study moves directly to Stage 2 (CRM) and Step 2 is not used. c) Cohort 5 is completed without a pre-defined AE or a DLT - neither Step 2 nor Stage 2 is used if a total of 10 patients are enrolled in Cohort 5.

Study Record Dates

• First Submitted: November 11, 2020
• First Posted: November 16, 2020
• Study Start: April 2, 2021
• Primary Completion: January 1, 2022
• Study Completion: January 1, 2022
• Last Updated: April 3, 2023
• Results First Posted: April 3, 2023

Record last verified: 2023-03

Locations

US (1)