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Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of CYH33 in Patients With PIK3CA-related Overgrowth Spectrum (PROS) and PIK3CA-related Vascular Malformations (PRVM)

NCT06975618 · Status: RECRUITING · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 141

Last updated 2025-09-24

No results posted yet for this study

Summary

This study is a multi-center, open-label, single arm, phase I/II study to evaluate the safety, tolerability, pharmacokinetics and preliminary efficacy of CYH33 in patients with PIK3CA-related overgrowth spectrum (PROS) and PIK3CA-related vascular malformations (PRVM)

Conditions

  • PIK3CA-Related Overgrowth Spectrum (PROS)
  • PIK3CA-related Vascular Malformations (PRVM)

Interventions

DRUG

CYH33

CYH33: Participants will receive oral CYH33 once daily. The starting dose for adults in Phase I is 10 mg QD; adolescents begin at 5 mg QD. In Phase II, patients will receive RP2D determined in the Phase I study.

DRUG

Placebo

Placebo: Matching placebo tablets will be administered once daily during the double-blind period of the Phase II PRVM cohort. Patients randomized to placebo will switch to CYH33 at the end of the blinded phase.

Sponsors & Collaborators

  • Haihe Biopharma Co., Ltd.

    lead INDUSTRY

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-08-22
Primary Completion
2029-12-31
Completion
2029-12-31

Countries

  • China

Study Locations

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Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06975618 on ClinicalTrials.gov