Which countries run stem-cell trials for Autism Spectrum Disorder?

Country distribution

A study with sites in several countries is counted once per country, taken from the location block of each registry record.

What the map means for Autism Spectrum Disorder

Registrations cluster in a few countries with paediatric research infrastructure; separately, a much larger commercial market sells infusions to families travelling internationally. The overlap between those two maps is small, and conflating them is the single most common error in this area.

Where recruitment is actually open

What travelling for a trial actually involves

Distance changes the risk calculus. Registered studies are designed around continuity of care, so a site will normally decline participants it cannot monitor — which is exactly the safeguard a commercial clinic does not apply.

Multi-country studies, named

Registered studies with sites in more than one country — the clearest evidence of collaboration rather than a single-centre series.

• NCT05003960 — Safety of Cultured Allogeneic Adult Umbilical Cord Derived Mesenchymal Stem Cell Intravenous Infusion for Autism (Antigua and Barbuda, Greece)

Why trial geography is not a shortlist

Where studies happen reflects who funds and who authorises them. Treating that as a ranking of care quality confuses the research system with the treatment market, two things that overlap far less than medical-tourism marketing implies.

Before treating geography as a shortlist, read the legality overview by country and what "best country" actually means here.

When these studies started

Registrations by start year since 2020: 2020 (1), 2022 (1), 2023 (1), 2024 (1), 2025 (2), 2026 (6). Activity for this condition spans 2009 to 2026, which shows whether interest is growing, flat or past its peak.

Frequently asked

Which countries run stem-cell trials for Autism Spectrum Disorder?

Sites are registered in 14 countries; the largest is United States (~38% of country mentions, 2026-08-29).

Does a country with many trials mean better treatment there?

Volume tracks funding and law, not outcomes. The relevant question is what oversight covers the specific clinic and product you are considering.

Are trial sites and commercial clinics the same thing?

Rarely. Academic trial sites and the private clinics advertising to medical tourists are typically separate organisations with different oversight.

Registry and literature counts retrieved 2026-08-29 (ClinicalTrials.gov API v2; PubMed E-utilities). Registration or publication volume measures research activity, not effectiveness or approval. Educational information — not medical advice; verify product, indication, legal pathway and evidence with an independent qualified physician. Page generated 2026-08-29. See our editorial standards.