Weekly shot shows promise for helping kids with dwarfism grow

NCT ID NCT05929807

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a weekly injection called TransCon CNP in children and teens with achondroplasia, the most common form of dwarfism. The goal is to see if it is safe and helps improve growth over several years. Participants who completed a previous TransCon CNP trial can join this long-term extension, receiving the same dose until their bones stop growing.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

TransCon CNP (a weekly injection of C-type natriuretic peptide)

What this could lead to

If successful, this treatment could help children with achondroplasia grow taller and improve bone development, potentially reducing some complications of the condition.

What could go wrong

This is an early-to-mid stage trial with no placebo group, so results may be less reliable. Possible side effects include injection site reactions and unknown long-term risks.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

achondroplasia Dwarfism

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Ascendis Investigational Site

    Aurora, Colorado, 80045, United States

  • Ascendis Investigational Site

    Wilmington, Delaware, 19803, United States

  • Ascendis Investigational Site

    Saint Paul, Minnesota, 55102, United States

  • Ascendis Investigational Site

    Houston, Texas, 77030, United States

  • Ascendis Investigational Site

    Linz, 4020, Austria

  • Ascendis Investigational Site

    Montreal, H3T 1C5, Canada

  • Ascendis Investigational Site

    Berlin, 13353, Germany

  • Ascendis Investigational Site

    Auckland, 1023, New Zealand

  • Ascendis Investigational Site

    Coimbra, 3000-602, Portugal

  • Ascendis Investigational Site

    Vitoria-Gasteiz, 1008, Spain

  • Ascendis Pharma Investigational Site

    Little Rock, Arkansas, 72202, United States

  • Ascendis Pharma Investigational Site

    Columbia Falls, Montana, 65212, United States

  • Ascendis Pharma Investigational Site

    Buffalo, New York, 14203, United States

  • Ascendis Pharma Investigational Site

    Madison, Wisconsin, 53705, United States

  • Ascendis Pharma Investigational Site

    Parkville, Victoria, 3052, Australia

  • Ascendis Pharma Investigational Site

    Copenhagen, 2100, Denmark

  • Ascendis Pharma Investigational Site

    Dublin, D01 YC76, Ireland