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A Study to Evaluate the Efficacy and Safety of CYH33 in Patients With Recurrent/Persistent Ovary Clear Cell Carcinoma

A Phase II, Open-Label, Multicenter Study to Evaluate the Efficacy and Safety of CYH33, a Selective PI3Kα Inhibitor in Patients With Recurrent/Persistent Ovary, Fallopian Tube or Primary Peritoneal Clear Cell Carcinoma

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05043922
Enrollment
93
Registered
2021-09-14
Start date
2021-10-11
Completion date
2026-02-28
Last updated
2026-01-30

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

Conditions

Ovarian Cancer, Recurrent Cancer

Keywords

Phase 2 study, Pharmacokinetics

Brief summary

The purpose of this study is to determine the treatment efficacy of CYH33 monotherapy in patients with recurrent or persistent ovarian, fallopian tube or primary peritoneal clear cell carcinoma harboring PIK3CA hotspot mutation, who received prior systemic anti-tumor treatment.

Detailed description

The purpose of this study is to determine whether treatment with single agent CYH33 significantly improves ORR compared to historical efficacy data in patients with recurrent/persistent ovarian clear cell carcinoma (OCCC) harboring PIK3CA hotspot mutations who received prior systemic anti-tumor treatment.

Interventions

DRUGCYH33

a Selective PI3Kα Inhibitor

Sponsors

Haihe Biopharma Co., Ltd.
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

Main Inclusion Criteria: 1. Female patients ≥ 18 years of age 2. Provide informed consent voluntarily. 3. Patients must have histologically or cytologically confirmed recurrent or persistent ovarian, fallopian tube, or peritoneum clear cell carcinoma. 4. Patients with recurrent/persistent ovary, fallopian tube or primary peritoneal clear cell carcinoma, who have identified PIK3CA status. 5. Patients must have failed standard chemotherapy. 6. ECOG-PS ≤ 1. 7. Patient must have adequate organ and bone marrow function measured within 28 days of screening. Main

Exclusion criteria

Patients are ineligible for this study if they meet any of the following criteria: 1. Patient has received any anticancer therapy 2. Patients who had prior treatment with any PI3K, mTOR or AKT inhibitor. 3. Radical radiation therapy within 4 weeks prior to the first dose of the investigational product or received local palliative radiation therapy for bone metastases within 2 weeks. 4. Any toxicities from prior treatment that have not recovered to baseline. 5. Patients who have been treated with any hematopoietic colony-stimulating growth factors ≤ 2 weeks prior to starting study drug. 6. Patients who have symptomatic CNS metastasis. 7. Major surgery or had significant traumatic injury within 28 days prior to the first dose of the investigational product or has not recovered from major side effects. 8. Known HIV infection with a history of acquired immunodeficiency syndrome (AIDS)-defining opportunity infection within the past 12 months; active hepatitis B and hepatitis C. 9. History of acute pancreatitis within 1 year of screening or past medical history of chronic pancreatitis. 10. Patients with clinically significant cardiovascular disease

Design outcomes

Primary

MeasureTime frameDescription
Tumor ORR in patients with PIK3CA hotspot mutations.through study completion, an average of 1 yearTumor ORR per Response Evaluation Criteria in Solid Tumours (RECIST) v1.1 in patients with PIK3CA hotspot mutations.

Secondary

MeasureTime frameDescription
PFSthrough study completion, an average of 1 yearPFS by BIRC using RECIST v1.1
OSthrough study completion, an average of 2 yearOS in each of the PIK3CA mutation status cohort
genetic and protein biomarker alterationsthrough study completion, an average of 1 yeargenetic and protein biomarker alterations that can impact PI3K signaling pathway

Countries

China, Japan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026