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An Initial Safety Study of Gedatolisib Plus PTK7-ADC for Metastatic Triple-negative Breast Cancer

An Initial Safety Study of Gedatolisib Plus PTK7-ADC for Metastatic Triple-negative Breast Cancer

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03243331
Enrollment
18
Registered
2017-08-09
Start date
2018-01-19
Completion date
2020-05-27
Last updated
2021-01-07

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

Conditions

Triple Negative Breast Cancer, Metastatic Breast Cancer

Keywords

Breast Cancer

Brief summary

Phase 1 study to evaluate the safety and effect of Gedatolisib and PTK7-ADC for the treatment of triple negative breast cancer

Interventions

Gedatolisb will be intravenously administered on Day 1, Day 8 and Day 15 of every 21 day cycle at a dose of 110 mg or 180mg depending on cohort assignment.

DRUGPTK7-ADC

PTK7-ADC will be administered on Day 1 of every 21 day cycle at a dose of 1.4mg/kg or 2.8 mg/kg depending on cohort assignment.

Sponsors

Kathy Miller
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Study will enroll 3 patients to the cohort 1 dose level. If 0 of 3 patients experience a DLT, the study will proceed to cohort 2. If 1 patient experiences a DLT, 3 additional patients will be enrolled into cohort 1. If 1 of 6 patients experience a DLT, the study will proceed and 3 patients will be enrolled to the cohort 2 dose level. If 0 patients experience a DLT in cohort 2, the study will proceed to cohort 3. If 1 patient experiences a DLT at cohort 2, 3 additional patients will be enrolled into cohort 2. If the study proceeds to cohort 3, 3 patients will be enrolled at this dose level. If 0 patients experience a DLT, the study will enroll an additional 3 patients at the cohort 3 dose level to better define the safety profile. If 1 of 3 patients experiences a DLT at cohort 3, 3 additional patients will still be enrolled into cohort 3. If 1 of 6 patients experience a DLT, the study will complete.

Eligibility

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

Inclusion criteria

* Metastatic Triple-negative Breast Cancer * Willingness to undergo tumor biopsy * Patients must have received at least 1 prior chemotherapy regimen for metastatic disease

Exclusion criteria

* Previous treatment with mTOR inhibitor * Untreated brain metastases

Design outcomes

Primary

MeasureTime frameDescription
Safety of Gedatolisb + PTK7-ADC using NCI CTCAE v4.0through study completion i.e. up to 1 yearsafety and toxicity data will be assessed using NCI CTCAE v4.0 and tabulated and reported

Secondary

MeasureTime frameDescription
Efficacy in all enrolled subjects18 weeksefficacy as determined by clinical benefit at 18 weeks
Overall response rate in all enrolled subjectsthrough study completion i.e. up to 1 yearefficacy as determined by overall response rate
Progression free survival in all enrolled subjectsthrough study completion i.e. up to 1 yearefficacy as determined by progression free survival
Pharmacodynamic determination of inhibition of PI3k signalingCycle 1 Day 15Pathological H-score will be determined from tissue obtained at screening and Cycle 1 Day 15. H-score will be compared to calculate percentage inhibition between samples.
Pharmacodynamic determination modulation of Wnt pathwayCycle 1 Day 15pathological H-score will be determined from tissue obtained at screening and Cycle 1 Day 15. H-score will be compared to calculate percentage change in expression between samples.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 22, 2026