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)
Trial Parameters
Brief 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)
Eligibility Criteria
Key inclusion criteria: 1. The patient or the patient's legal guardian (if applicable) voluntarily signs the Informed Consent Form. 2. At the time of signing the informed consent, adult patients should be ≥18 years old (or meet the legal adult age according to local regulations), and adolescent patients should be ≥12 years old and \<18 years old (or meet the legal definition of adolescent according to local regulations; additionally, adolescent patients should weigh ≥35 kg). 3. The patient is diagnosed with PIK3CA-related overgrowth spectrum (PROS) or PIK3CA-related vascular malformations (PRVM), and provides a report confirming PIK3CA mutation detected by local laboratory or the Sponsor-designated central laboratory, with at least one measurable lesion related to PROS or PRVM. 4. Patients should demonstrate adequate organ and bone marrow function during the 28-day screening period. Key exclusion criteria: 1. PROS patients presenting solely with isolated macrodactyly, epidermal nevi/ne