This is an observational study for children aged 2.5 to under 17 years old who have hypochondroplasia (HCH), a condition causing disproportionate short stature. The study aims to understand the natural progression of HCH by collecting information on growth, medical complications related to HCH, quality of life, daily abilities, and thinking skills. There are no medications or treatments being tested in this study. The main goal is to see how children's height changes over time, measured annually for up to three years. To join, your child needs a confirmed diagnosis of HCH through a molecular test and must be able to walk without help. The study is looking to enroll about 150 participants.

Study design

This is an observational study, meaning no intervention is given. It plans to enroll 150 participants.

What's involved

Participants and their parents/guardians must be willing and able to attend study visits and comply with study procedures.

Compensation

Not stated in the trial record.

Follow-up

The primary endpoint, annualized height velocity, is measured for up to 3 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.