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Sapanisertib and Serabelisib (PIKTOR) With Paclitaxel and a Substudy With an Insulin-Suppressing Diet in Patients With Advanced/Recurrent Endometrial Cancer

An Open-label, Multi-Center, Phase 2 Clinical Trial Evaluating Sapanisertib and Serabelisib (PIKTOR) With Paclitaxel, and a Substudy Evaluating PIKTOR With Paclitaxel Plus an Insulin-Suppressing Diet, in Patients With Advanced or Recurrent Endometrial Cancer

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06463028
Enrollment
40
Registered
2024-06-17
Start date
2024-12-12
Completion date
2029-09-30
Last updated
2025-12-24

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

Conditions

Endometrial Cancer

Keywords

Serabelisib, Sapanisertib, Paclitaxel, Taxol, Antineoplastic Agents, PI3K, AKT, mTOR, Dual PI3K/mTOR inhibition, Genetic mutation, Cisplatin, Carboplatin, Genital Diseases, Endometrial Neoplasms, Advanced Endometrial Carcinoma, Recurrent Endometrial Carcinoma, Metastatic Endometrial Carcinoma, Endometrial Cancer, Endometrioid Carcinoma, Cancer of Endometrium, Cancer of the Endometrium, Carcinoma of Endometrium, Endometrial Carcinoma, Endometrium Cancer, Neoplasms, Endometrial, Metabolism, Synthetic Lethality, Metabolism Programming, PIK3CA, PIK3CA Mutation, PI3K Gene Mutation, PI3K/AKT/mTOR Pathway Mutation, AKT Gene Mutation, mTOR Gene Mutation

Brief summary

This is a Phase 2, multicenter, open-label, single-arm study to evaluate the efficacy and safety of sapanisertib and serabelisib (PIKTOR) with paclitaxel in participants with advanced or recurrent endometrial cancer.

Detailed description

This is a Phase 2, multicenter, open-label, single-arm study to evaluate the efficacy and safety of sapanisertib and serabelisib (PIKTOR) with paclitaxel in participants with advanced or recurrent endometrial cancer who have failed prior systemic therapies, including a platinum-based therapy and an immune checkpoint inhibitor, either separately or together.

Interventions

DRUGSapanisertib

Oral

Oral

DRUGPaclitaxel

Infusion

Sponsors

GOG Foundation
CollaboratorNETWORK
Faeth Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Histologically confirmed diagnosis of endometrioid endometrial carcinoma. * Documented evidence of advanced or recurrent endometrial cancer that is not amenable to surgery/radiation for curative intent. * Participant has received at least 1 but not more than 4 prior systemic therapies. Prior therapy must include platinum-based chemotherapy and a checkpoint inhibitor, either separately or in combination. If a subject has been unable to be treated with checkpoint inhibitor in the past due to medical contraindications, consult with Medical Monitor. * PI3K/AKT/mTOR pathway gene alteration identified. * At least 1 measurable target lesion according to RECIST v1.1 * Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 1 at Screening. * Non-pregnant, non-lactating females who are postmenopausal, surgically sterile or who agree to use effective contraceptive methods..

Exclusion criteria

* Participants with central nervous system metastases are not eligible, unless they have completed local therapy and have discontinued the use of corticosteroids for this indication for at least 4 weeks before starting treatment in this study * Active malignancy (except for endometrial cancer, definitively treated in-situ carcinomas \[e.g., breast, cervix, bladder\], or basal or squamous cell carcinoma of the skin) within the past 24 months prior to treatment. Fully resected localized malignancies are eligible. * Gastric feeding tube (gastrostomy tube), gastrointestinal malabsorption, gastrointestinal anastomosis, bowel obstruction, or any other condition that might affect the absorption of study treatment. * Clinically significant (per Investigator judgement) hemoptysis or tumor bleeding. * Significant cardiovascular impairment. * Active, uncontrolled (requiring systemic antimicrobial therapy) infection. * Concurrent participation in another therapeutic clinical trial. * Prior radiation therapy within 21 days prior to start of study treatment. * Strong CYP3A4 inhibitors and inducers are prohibited during the study. Strong CYP1A2 inhibitors as well as CYP1A2 inducers should be administered with caution and at the discretion of the Investigator. Alternative treatments, if available, should be considered. Additionally, strong CYP3A4 inhibitors or inducers should not be taken within 7 days before the first dose of study intervention. * Participants who require PPIs or chronic use of antacids, histamine H2 receptor blockers, or other treatments to raise gastric pH. * Prolongation of QTc interval to \>480 ms. * HbA1c ≥ 8.0% or fasting serum glucose \> 160 mg/dL or fasting triglycerides \> 300 mg/dL or receiving treatment with insulin.

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR)Up to 2 yearsDefined as the proportion of participants with measurable disease at baseline who have confirmed complete response (CR) or partial response (PR).

Secondary

MeasureTime frameDescription
Progression free survival (PFS) at 6 monthsUp to 5 years.Defined as PFS rate at 6 months.
Overall survival (OS)Up to 5 years.Defined as the time from first dose to death.
Progression free survival (PFS)Up to 5 years.Defined as the time from first dose until the date of disease progression or death.
Duration of response (DoR)Up to 5 years.Defined for participants with confirmed CR or PR as the time from response until date of documented disease progression or death.
Safety and tolerability of drugs by assessment of adverse events (AEs) / serious adverse events (SAEs)Up to 2 years.Graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE V5.0).
Clinical benefit rate (CBR)Up to 5 years.Defined as the percentage of participants who achieve complete response (CR), partial response (PR), or have stable disease (SD) of at least 16 or 24 weeks.

Countries

United States

Contacts

Primary ContactMedical Monitor
clinicaltrials@faeththerapeutics.com(708)406-9282

Outcome results

None listed

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