This study aims to find specific markers (biomarkers) in blood and tissue that can help doctors better diagnose, monitor, and treat rare conditions called vascular anomalies. These conditions include Generalized Lymphatic Anomaly and Gorham-Stout Disease. Researchers will look at blood samples (serum and plasma) and tissue collected during surgeries or sclerotherapy (a procedure to treat blood vessel problems) to understand what causes these diseases and find new ways to target them with treatments. You may be able to join if you are having blood drawn as part of your regular care or if you are having surgery or sclerotherapy for a vascular anomaly. The study hopes to find biomarkers that correlate with diagnosis, disease severity, and how well treatments work, with measurements taken about every two years. The current recruitment status is unclear.

Study design

This is an observational study, meaning researchers will collect information without giving any specific treatments. It plans to include up to 1000 participants.

What's involved

If you participate, blood will be drawn during your standard lab work or tissue will be collected during a surgical procedure or sclerotherapy.

Compensation

Not stated in the trial record.

Follow-up

Researchers will look at how biomarkers correlate with your condition and treatment response about every two years.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.