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Phase 2 Study of OTL38 for Intra-operative Imaging of Folate Receptor-alpha Positive Ovarian Cancer

A Phase 2, Single Dose, Open-Label Study to Investigate the Safety and Efficacy of OTL38 Injection (OTL38) for Intra-operative Imaging of Folate Receptor-alpha Positive Ovarian Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02317705
Enrollment
48
Registered
2014-12-16
Start date
2014-12-31
Completion date
2015-11-30
Last updated
2022-06-21

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

Conditions

Ovarian Cancer

Brief summary

This study is being done to: * test the safety of OTL38 * see if OTL38 helps light up the cancer when viewed with the special camera system * test the safety of the special camera system for use along with OTL38 during surgery

Interventions

DRUGOTL38

Near infrared camera imaging system

PROCEDURELaparotomy

primary surgical cytoreduction, interval debulking, or recurrent ovarian cancer surgery

Sponsors

SynteractHCR
CollaboratorINDUSTRY
On Target Laboratories, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

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

Inclusion criteria

1. Female patients 18 years of age and older 2. Have a primary diagnosis, or at high clinical suspicion, of primary ovarian cancer (of epithelial type), planned for primary debulking or interval debulking surgery, and: * Who are scheduled to undergo laparotomy for the debulking surgery OR * Who are scheduled to undergo laparoscopy and pre-authorized to undergo laparotomy for the debulking surgery, if cancer is detected on the laparoscopy 3. A negative serum pregnancy test at Screening followed by a negative urine pregnancy test on the day of surgery or day of admission for female patients of childbearing potential 4. Female patients of childbearing potential or less than 2 years postmenopausal agree to use an acceptable form of contraception from the time of signing informed consent until 30 days after study completion 5. Ability to understand the requirements of the study, provide written informed consent and authorization of use and disclosure of protected health information, and agree to abide by the study restrictions and to return for the required assessments

Exclusion criteria

1. Previous exposure to OTL38 2. Known FR alpha-negative ovarian cancer 3. Planned surgical approach via laparoscopy or robotic surgery 4. Any medical condition that in the opinion of the investigators could potentially jeopardize the safety of the patient 5. History of anaphylactic reactions or severe allergies 6. History of allergy to any of the components of OTL38, including folic acid 7. Pregnancy, or positive pregnancy test 8. Clinically significant abnormalities on electrocardiogram (ECG) 9. Presence of any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule 10. Impaired renal function defined as eGFR\< 50 mL/min/1.73m2 11. Impaired liver function defined as values \> 3x the upper limit of normal (ULN) for alanine aminotransferase (ALT) or aspartate aminotransferase (AST), alkaline phosphatase (ALP), or total bilirubin. 12. Known Stage IV ovarian cancer with Brain Metastases 13. Received an investigational agent in another investigational drug or vaccine trial within 30 days prior to surgery 14. Known sensitivity to fluorescent light

Design outcomes

Primary

MeasureTime frameDescription
Sensitivity of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.Day of Surgery (Day 1)Sensitivity for the detection of folate receptor-alpha positive (FRAP) ovarian cancer lesions is defined as the ratio (multiplied by 100) of the number of FRAO ovarian cancer lesions confirmed by both fluorescent light and the pathology/ and immunohistochemistry lab (TP) over the number of FRAP ovarian cancer lesions confirmed by the pathology/ and immunohistochemistry lab (TP+FN). 95% lower one-sided confidence interval was used.
Positive Predictive Value (PPV) of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.Day of Surgery (Day 1)PPV for the detection of FRAP ovarian cancer lesions is defined as the ratio (multiplied by 100) of the number of FRAP ovarian cancer lesions confirmed by both fluorescent light and the pathology/ and immunohistochemistry lab (TP) over the number of FRAP ovarian cancer lesions confirmed by fluorescent light (TP + FP). 95% lower one-sided confidence interval was used.

Countries

United States

Participant flow

Pre-assignment details

Subjects were screened up to 28 days prior to surgery.

Participants by arm

ArmCount
OTL38 for Intra-operative Imaging of Folate Receptor-alpha Positive Ovarian Cancer
Patient injected with a dose of 0.025 mg/kg OTL38 and undergoes intraoperative imaging
44
Total44

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyDrug not usable1
Overall StudyPhysician Decision1
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicOTL38 for Intra-operative Imaging of Folate Receptor-alpha Positive Ovarian Cancer
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
21 Participants
Age, Categorical
Between 18 and 65 years
23 Participants
Age, Continuous63.8 years
STANDARD_DEVIATION 10.19
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
37 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
7 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
3 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
White
35 Participants
Region of Enrollment
United States
44 participants
Sex: Female, Male
Female
44 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 44
other
Total, other adverse events
44 / 44
serious
Total, serious adverse events
13 / 44

Outcome results

Primary

Positive Predictive Value (PPV) of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.

PPV for the detection of FRAP ovarian cancer lesions is defined as the ratio (multiplied by 100) of the number of FRAP ovarian cancer lesions confirmed by both fluorescent light and the pathology/ and immunohistochemistry lab (TP) over the number of FRAP ovarian cancer lesions confirmed by fluorescent light (TP + FP). 95% lower one-sided confidence interval was used.

Time frame: Day of Surgery (Day 1)

Population: Population includes all patients who received OTL38, underwent cytoreductive surgery for PPV analysis, were exposed to fluorescent light using the imaging system, and had at least one FRAP target ovarian cancer lesion. Patients enrolled to the study after adequate number of lesions have been excised and submitted for pathology, and immunohistochemistry evaluation for determining PPV, enrolled after protocol amendment 4, were not included in the analysis population.

ArmMeasureValue (NUMBER)
ExperimentalPositive Predictive Value (PPV) of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.94.93 percentage of lesions
Primary

Sensitivity of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.

Sensitivity for the detection of folate receptor-alpha positive (FRAP) ovarian cancer lesions is defined as the ratio (multiplied by 100) of the number of FRAO ovarian cancer lesions confirmed by both fluorescent light and the pathology/ and immunohistochemistry lab (TP) over the number of FRAP ovarian cancer lesions confirmed by the pathology/ and immunohistochemistry lab (TP+FN). 95% lower one-sided confidence interval was used.

Time frame: Day of Surgery (Day 1)

Population: Population includes all patients who received OTL38, underwent cytoreductive surgery for sensitivity analysis, were exposed to fluorescent light using the imaging system, and had at least one FRAP target ovarian cancer lesion. Patients enrolled to the study after adequate number of lesions have been excised and submitted for pathology, and immunohistochemistry evaluation for determining sensitivity, enrolled after protocol amendment 4, were not included in the analysis population.

ArmMeasureValue (NUMBER)
ExperimentalSensitivity of OTL38 in Detecting Folate Receptor-alpha Positive Ovarian Cancer During Surgery.97.97 percentage of lesions

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